Post on 09-Mar-2016
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The 2nd International Conference on Mechanical Engineering
ICOME 2015
The Department of Mechanical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Indonesia, are proudly organizing the 2nd International Conference on Mechanical Engineering ICOME 2015, with its theme Mechanical Science and Technology for Sustainable Energy. ICOME 2015, which is held in Bali, Indonesia on September 3-5, 2015, offers a great opportunity to bring together researchers, scientists, and industrial professionals around the globe to exchange new ideas and information. It also provides a forum to discuss the most recent development and trends in mechanical science and engineering related fields.
It is our pleasure to present this ICOME 2015 Participant Guide Book. This book includes the keynote abstracts, conference schedule, details of parallel sessions and venue layout.
All papers which are presented in the conference will be published in the nominated journals. Therefore, all of the accepted papers have been thoroughly peer reviewed by experts in the related area in order to meet the scientific publication standards.
On behalf of the conference organizers, we would like to thank all of the authors who have spent tremendous amount of time to contribute their findings. We also would like to highly appreciate all of the reviewers for their dedications, comments and suggestions such that the accepted papers have met the international journal standard. The last but not least, we gratefully acknowledge the committee members, individuals and sponsors for their supports and contributions in ICOME 2015.
We hope this conference enriches your research and knowledge, and you enjoy your stay in Bali!
Sincerely yours,
ICOME 2015 Committee
Advisory Committee Rector of ITS Surabaya, Indonesia
Dean of Industrial Technology Faculty ITS, Indonesia
Dr. Bambang Pramujati (ITS, Indonesia)
Prof. Jiing Yih Lai (NCU, Taiwan)
Prof. I Nyoman Suprapta Winaya (UNUD, Indonesia)
Organizing Committee General Chair : Dr. Bambang Arip Dwiyantoro General Co-Chair : Dr. Unggul Wasiwitono Program Chair : Vivien Suphandani, PhD. Program Co-Chair : Moch. Solichin, MT. Finance Chair : Dr. Wiwiek Hendrowati Finance Co-Chair : Ika Dewi Wijayanti, MSc Finance Advisor : Indra Sidharta, MSc. Publication Chair : Alief Wikarta, PhD Publication Co-Chair : Dinny Harnany, MSc. Publicity Chair : Arif Wahjudi, PhD. Publicity Co-Chair : Aida Annisa Amin Daman, MT. Publicity Co-Chair : Dedy Zulhidayat Noor, PhD Publicity Co-Chair : Ari Kurniawan Saputra, MT.
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TABLE OF CONTENTS.......................................................................................................................... 1
Keynote speech abstracts................................................................................................................... 8
Conference Program ........................................................................................................................ 13
Parallel session 1 .......................................................................................................................... 16
Parallel session 2 .......................................................................................................................... 18
Parallel session 3 .......................................................................................................................... 20
Parallel session 4 .......................................................................................................................... 22
Parallel session 5 .......................................................................................................................... 24
Parallel session 6 .......................................................................................................................... 26
Energy, Heat Transfer and Fluid Flow................................................................................................ 28
Engine test stand layout and post processing tools for the detection of many engine performance parameters .................................................................................................................................. 29
Flame Stability Measurement on Rectangular Slot Meso-scale Combustor ...................................... 30
The Effect of Nitrogen on Flame Characteristics in Biogas External Premixed Combustion ................ 31
Waste Fish Oil Biodiesel Production and Its Performace in Diesel Engine ......................................... 32
Influence of the compression ratio and injection timing on Sinjai Engine Performance with 50%
BioethanolGasoline blended fuel ................................................................................................. 33
Optimization of WaterScrubbingMethod for Enhancement of Biogas Quality through Base Solutions Addition ....................................................................................................................................... 34
Experimental Study of Thermal Efficiency on Plate-Fin Solar Thermal Collector ................................ 35
Effect of Number of Transfer Unit of Heat Exchangers on the System Performance of an Organic Rankine Cycle System ................................................................................................................... 36
Experimental Study the Effect of Angle of Blade Inclination on Coal Swirl Fluidized Bed Drying ......... 37
Effect ofMassFlowRateon aDryerRoomRadiator Pressure Drop and Heat Transfer............................ 38
Flow and Heat Transfer Enhancement Around Staggered Tubes Using Rectangular Vortex Generators
.................................................................................................................................................... 39
Improved Junction Temperature Measurement for High Power LED ................................................ 40
Bottom Shear Stress and Bed Load Sediment Transport Formula for Modeling the Morphological Change in the Canal Water Intake.................................................................................................. 41
Base aspect ratio effects on resonant fluid sloshing in a rectangular tank......................................... 42
Synthesis of BiFeO3 Nanoparticle and Single Phase by Sol-Gel Process for Multiferroic Material ...... 43
Numerical Simulation of vortex-induced vibration using OpenFOAM ............................................... 44
Numerical Modeling of Vortex-induced Vibration in Turbulent Flow ................................................ 45
TABLE OF CONTENTS
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Characteristics of Decompression Tank Internally Pressurized With Water Using OpenFOAM ........... 46
A CFD Analysis of the Viscous Fluid Behavior of Glycerin in Various of Stirring Patterns.................... 47
Characteristics Of Two Phase Fluid Flow In Pipe Bends.................................................................... 48
Effect of Impeller Condition on Blower Performance, Case Study : Impeller of K-2201 in PT.
PERTAMINA RU III......................................................................................................................... 49
Bottom Shear Stress and Bed Load Sediment Transport Due to Irregular Wave Motion .................... 50
Design of NACA 4415 Taperless Twistless Wind Turbine Blade Using Twist Optimization for Indonesia Wind Characteristics ..................................................................................................................... 51
Rheology Margarine on Non-Newtonian Fluid Proving Through Small Gap ...................................... 52
Numerical Investigation of Dynamic Stall Behavior on Single Bladed Darrieus Turbine Airfoil Section 53
Experimental Study of the Cross flow Turbine ................................................................................ 54
Analysis of Turbulence Characteristics in the Laminar Sub-Layer Region of a Perturbed Turbulent Boundary Layer ............................................................................................................................ 55
Model of Ground Water Elevation Around Mud Reservoir in Coastal Area of Porong Sidoarjo ........... 56
Numerical simulation of cross-flow around four circular cylinders in-line square configuration near a
plane wall .................................................................................................................................... 57
CFD based investigations into optimization of diffuser angle on rear bus body ................................ 58
Numerical Studies of The Influence of Tube Bank Configuration In A Staggered Arrangement of Tubes to Heat Transfer and Flow Characteristics of Fluid .......................................................................... 59
Test Equipment Design of Thermosyphon Effects On Passive Solar Water Heating System ............... 60
Experimental Study of Heat Transfer Characteristics of Solar Water Heater Collector with Addition Wavy Fins on Pipe......................................................................................................................... 61
The Role of Heterogeneous Nucleation in Water Based Phase Change Material for Medium
Temperature Refrigeration............................................................................................................ 62
Performance Modeling of A Wave Energy Converter: Pembangkit Listrik Tenaga Gelombang Laut Sistem Bandulan (PLTGL-SB) ....................................................................................................... 63
Strategy in reducing the pace of the greenhouse gas emission from the electricity sector in Southeast Sulawesi....................................................................................................................................... 64
Calculation of Potential Wind Power in Indonesia by Using High Altitude Wind Energy method ........ 65
Feasibility Analyses of Grid/Wind/PV Hybrid Systems for Industrial Application............................... 66
Cooling Load Estimation to Determine the Proper Capacity of Air Conditioners in the Engineering Building at Engineering Academy of Soroako .................................................................................. 67
The variety of furniture arrangement inside apartment unit around Jabodetabek area to improve
COPc ............................................................................................................................................ 68
CFD analysis on thermal comfort and indoor air quality affected by partitions in air-conditioned building........................................................................................................................................ 69
Analysis of Effect of Sub Cooling Performance of Vapour Compression Refrigeration System With Cooling Load Variation .................................................................................................................. 70
Performance Improvement Using Subcooling on Freezer with R22 and R290 as Refrigerant for Various
Ambient Temperatures ................................................................................................................. 71
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Numerical Investigation on Ejector as an Expansion Device Using R290 in Residential Air Conditioner for Various Cooling Capacity.......................................................................................................... 72
Improvement of Savonius Blade to Overcome Dead Band on Hybrid VAWT Savonius-Darrieus for New and Renewable Energy Cluster for Tropical Country........................................................................ 73
A Couple of Savonius Wind Mill and Centrifugal Reaction Pump as a Wind Energy Water Pump System.................................................................................................................................................... 74
Simulation Savonius Wind Turbine with Multi-Deflector ................................................................. 76
The Dynamic Characteristics of Vertical Axis Wind Turbine Type H .................................................. 77
Investigation Of Factors Affecting Power Curve Wind Turbine Blade ................................................ 78
Numerical study of mixed convection around a heated circular cylinder .......................................... 79
Convective Regimes on Porous Media within Sudden Changed Channel Due to Tangential Gas Flow . 80
Predicting Temperature Profile and Temperature History for Varied Parameters of a Welding Process
Using Rosenthals Approach for Semi-infinite Solid ......................................................................... 81
Extraction of Essential Oils from Patchouli Plant Using Advanced Techniques of Microwave -Assisted Hydrodistillation ........................................................................................................................... 82
The Utilization of Paraffin And Beeswax as Heat Energy Storage in Infant Incubator ......................... 83
Efficiency of Household Gas Stove by Optimizing Gap of Pan and Stove Cover.................................. 84
Design Concept of Small Long-Life PWR Using Thorium Fuel M........................................................ 85
The Effect of Pretreatment and Variety of Microorganisms to the Production of Ethanol from Coffee Pulp ............................................................................................................................................. 86
DEGRADATION OF GLYCEROL WITH SONICATION METHOD: the influence of the addition of a
heterogeneous catalyst................................................................................................................. 87
The Effect of Nitrogen Stress in Medium for Increasing Carbohydrate as A Bioethanol Source and Carotenoid as An Antioxidant from Chlorella Zofingiensis Culture.................................................... 88
The Effect of Rumen and Mixed Microorganism (Rumen and Effective Microorganism) on Biogas Productionfrom Rice Straw Waste ................................................................................................. 89
Study of Composition of Water Mulsion Fuel by Taguchi Experimental Method ............................... 90
The Calorific Values of Solid and Liquid Yields Consequenced by Temperatures of Mahogany Pyrolysis
.................................................................................................................................................... 91
The Effect of CO2 Fraction on the Flame Stability of Biogas Premixed Flame ................................... 92
Design and Modeling Pile Breakwater for LNG Jetty at Senoro Field, Central Sulawesi ..................... 93
Mechanical Design, Structure, Vibration ........................................................................................... 94
Experimental Study on the Dynamic Characteristics of Hydro-Magneto-Electric-Regenerative Shock
Absorber ...................................................................................................................................... 95
Peristaltic Mechanism to Mimic The Esophageal Swallowing Process............................................... 96
Thrust Force of Three Circular Windings of Conductor in Magnetic Field .......................................... 97
An Improved Load-Displacement Prediction For A Coned Disc Spring Using The Engergy Method...... 98
Stress Analysis for a Substrate Holder Module and Thin Films Grown in an MOCVD Reactor ............. 99
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Analysis of the Influence of Hydraulic Cylinder Diameter to the Total Damping Force and the Generated Electricity of Regenerative Shock Absorber.................................................................. 100
Response Reduction of Two DOF Shear Structure Using TMD and TLCD by Considering Absorber Space Limit and Fluid Motion ................................................................................................................ 101
Anchor Strength Analysis for Mooring of a Floating Breakwater in Senoro Field, Central Sulawesi ... 102
Mechanical Analysis of the Prosthetic Knee in Flexion................................................................... 103
Finite element analysis of asymmetric stent for treatment of eccentric plaque .............................. 104
An Improved Energy Based Load-Displacement Prediction for Slotted Disc Spring .......................... 105
Influence of Spring Ratio on Variable Stiffness and Damping Suspension System Performance........ 106
Design and Modeling Fender System for Condensate and Sulphuric Acid Jetty at Senoro Field, Central Sulawesi..................................................................................................................................... 107
Modeling of a Shell Eco-marathon vehicle based on drive-train characteristic and driver modes to
predict fuel consumption of the vehicle on a specific track............................................................ 108
Study the effects of adjustment of highest and lowest SOC allowed in battery on fuel consumption and emission of series hybrid vehicle using ADVISOR .................................................................... 109
Simulation Of Two Segments Crash Box Subjected To Frontal Load................................................ 110
Experimental Study And Analysis Of The Generated Electric Power of Salter Duck-Ocean Wave Energy Harvester (OWEH) Due To Additional Weight Change and Wave Amplitude ................................... 111
Analysis of Wave Climate Variations Based on ERA-Interim Reanalysis Data from 1980 to 2014 To
Support Wave Energy Assessment in Indonesia ............................................................................ 112
Simplicity Design of Hybrid Energy of Marine Current and Offshore Wind Energy Plant in Indonesia 113
Material and Metallurgy ................................................................................................................ 114
High Temperature Corrosion of Aluminized AISI 1020 Steel With NaCl and Na2SO4 Coatings ........... 115
Investigations of the Mixed Mode Crack Growth Behavior of an Aluminum Alloy ........................... 116
Morphology of crown tube Austenitic Stainless Steel TP316 HTF failure......................................... 117
Effect of Volume Fraction Epoxy-Hollow Glass Microspheres and Curing Temperature Variations on Compressive Properties of Composites ....................................................................................... 118
Experimental Study Of Electrode Selection Effects On Mechanical Properties Of Underwater Wet Welded-Joints ............................................................................................................................ 119
Experimental Study Of The Influence Of Quenching And Partitioning Temperature Variation On Retained Austenite Fraction In AISI 4140 Steel ............................................................................. 120
Aging Behavior in Co-Cr-Mo-C Alloys............................................................................................ 121
The Production Study of Bipolar Plate From Cuprum-Carbon Nanocomposite in Polypropylene Matrix
(PP) for the Fuel Cell Application.................................................................................................. 122
Effect of Hydrogen Addition on the Characteristics of Nitrided Martensitic Stainless Steel AISI 420 . 123
Effect of Composition on the Microporosity, Microstructure, and Macrostructure in the Start-Up Direct-Chill Casting Billet of Al-Cu Alloys ...................................................................................... 124
Metallography Investigation of Dry Corrosion Boiler Tube............................................................. 125
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Effects of Deformation and Annealing Temperature on the Microstructures and Mechanical Properties of Cu-32%Zn Brass ...................................................................................................................... 126
The Use of Magnetic Flux to the Welding of Hot Roll Quench Tempered Steel................................ 127
Effect of Variation of Kalium Hydroxide Solution Concentrationand Temperatureto The Corrosion Resistance of AISI 304, AISI 316, and Copper Alloysin Water Electrolysis Apparatus ........................ 128
Effect of Low Temperature Sintering on the Porosity and Microstructure of Porous Zeolite Ceramic 129
Electrochemical Performances of LiFePO4/C AS Cathode for Aqueous Electrolyte Lithium-Ion Battery.................................................................................................................................................. 130
Synthesis of BiFeO3 Nanoparticle and Single Phase by Sol-Gel Process for Multiferroic Material ..... 131
Biomechanical Analysis Of Spider Silk For Anterior Cruciate Ligament Reconstruction .................... 132
Strength Analysis of ZnO-Al2O3 Nanocomposite for Implant Material Innovation........................... 133
Effect of Carbon Coating on Electrochemical Performances of LiTi2(PO4)3 as Anode for Aqueous
Electrolyte Lithium Ion Battery .................................................................................................... 134
Effect of Temperature And Time of Two-Step Austempering Method on Mechanical Properties for Nodular Cast Iron ....................................................................................................................... 135
Effect of Adhesive Layer Thickness on the Shear Strength of Adhesively Bonded Steel Joints in Wet Environment .............................................................................................................................. 136
Effect of Fillers Content on Mechanical Strength and Failure Mode of Aluminium Bonded with Epoxy-
Based Adhesive .......................................................................................................................... 137
Effects of Citric Acid/BaTiO3 Weight Fractions and Time of Sintering in Sol Gel Process on Electric Saturation Polarization Values and Phase Composition ................................................................. 138
The Effect Of Dromus Oil Level In Cooling Media On Tensile Strength And Microstructure Of St-60 Steel Due toHardening Tempering Process ................................................................................... 139
Friction Stir Welding on Corner Joint With New Surface Preparation Design................................... 140
Influence of Argon-Nitrogen Gas to balance the microstructure in the welding of Super Duplex
Stainless Steel ............................................................................................................................ 141
Manufacturing ............................................................................................................................... 142
Development of technology for rolling and smoothing with heating the inner sides of cylindrical holes to improve the quality of workpieces in the machine building. ...................................................... 143
Investigation of Risk Based Decision Making for Mobile Mooring System ....................................... 144
Characteristics of Electrode Materials on Machining Performance of Tool Steel SKD11 with EDM Shinking ..................................................................................................................................... 145
Relationship Model for an Automotive Sustainable Supply Chain .................................................. 146
Numerical simulation of cutting stress deformation in tungsten carbide turning tools .................... 147
Flexible and Ergonomically Three Wheel Bike For Post Stroke Patient ............................................ 148
Improving the Injection Molding of Small Optical Elements by Integrating Reverse Engineering and Mold Flow Analysis ..................................................................................................................... 149
Evaluation of Delay Factors in Jacket Structure Project ................................................................. 150
Injection Molding Process Simulation of Tensile Strength and Impact Specimen Test...................... 151
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Small Bussiness Simulation.......................................................................................................... 152
An Innovative Concept to Improve the Muffler Performance Using Automated Mechanical IRIS ..... 153
The Effect of Welding Time and Welding Currents on Weld Nugget and Tensile Properties of Thin Aluminum A1100 by Micro Resistance Spot Welding .................................................................... 154
Optimization of Cable Ties Injection Molding Process Using Back Propagation Neural Network and Genetic Algorithm (BPNN-GA) ..................................................................................................... 155
Anti-plane Interaction of a Coated Circular Inclusion with a Crack Located in Matrix....................... 156
Optimization Of Multiple Performance Characteristics in EDM Process of HPM 38 Steel Using Response Surface Methodology And Non-Linear Programming ..................................................... 157
A Waste Relationship Matrix Model for Better Green Lean Product in Water Processing ................ 158
Multiple-Performance Optimization of Drilling Parameters And Tool Geometries in Drilling GFRP
Composite Stacks Using Taguchi and Grey Relational Analysis (GRA) Method................................. 159
Tempering Process Gradually to Improve Quality Tool .................................................................. 160
Multi Response Optimization using Taguchi-Grey-Fuzzy Method in Drilling of Kevlar Fiber Reinforced Polymer (KFRP) Stacked .............................................................................................................. 161
The Effects of Pulse On Time and Arc On Time on Surface Quality in Wire- EDM of ASSAB XW-42 and ASSAB 8407 2M Tool Steels ......................................................................................................... 162
Modeling of Well Service and Workover to Optimize Scheduling of Oil Well Maintenance .............. 163
Optimization Of Multi Response Using Taguchi Grey-Fuzzy End Milling Process Material ASSAB XW-42
With Liquid Nitrogen Cooling....................................................................................................... 164
Groove Overhang Impact on the Result of Surface Roughness on Vertical CNC Milling Process........ 165
Optimization of Multiple Response Characteristics in the WEDM Process of Buderus 2379 ISO-B Tool Steel Using Taguchi-Grey-Fuzzy Logic Method .............................................................................. 166
Simulation Of Ironing Process For Bullet Case To Get Minimum Forming Force With Variation Of Die Angle And Reduction Wall Thickness............................................................................................ 167
Modelling and Simulation Analysis of Solenoid Valve for Spring Constant Influence to Dynamic
Response ................................................................................................................................... 168
Optimization ofMultiple Performance Characteristics inWire Electrical Discharge Machining (WEDM) Processof Buderus 2080 Tool Steel Using Taguchi-Grey-Fuzzy Method .......................................... 170
A Review Paper on Product Surface Defect Detection of Ironing Process........................................ 171
Parametric Optimization Of Wire Electrical Discharge Machining Process On AISI H13 TOOL Steel Using Weighted Principal Component Analysis (WPCA) And Taguchi Method .......................................... 172
The Influence Of Binder Variation Using Eruption Kelud Sand On Sand Mold Strength, Quality And Fluidity Results On Al-Si Metal Casting ......................................................................................... 173
Optimization of Multi Response Using Taguchi-Grey-Fuzzy of Cryogenic Cooling in Face Milling
Material ASSAB XW42 ................................................................................................................. 174
Mechatronics and Control System .................................................................................................. 175
Reconfiguration of modular robotic system MECABOT ............................................................ 176
Dimensionally Homogeneous Jacobian and Conditioning Number ................................................. 177
Navigation and Guidance Control System of AUV with Trajectory Estimation of Linear Modelling.... 178
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Hardware-In-The-Loop Simulation and Digital Control of Double Inverted Pendulum ..................... 179
Inverse Kinematics Modelling for Writing Robot Control Using ANFIS ............................................ 180
Type Synthesis of Two DOF Hybrid Translational Parallel Manipulators .......................................... 181
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Keynote speech abstracts
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Technology is The Key Enabler for Energy Sustainability
Lukman Mahfoedz
PT. Medco Energi Internasional Tbk.
Nearly half of 7.7 million barrel oil equivalent per day of primary energy Indonesia needs in 2025 will
have to come from oil and gas. In the present day, oil and gas production level at around 2.2 million
barrel oil equivalent per day, which keeps declining, , should alert the government that urgency of
action is needed to secure Indonesias future energy supply and energy sustainability. To provide 47% of
total primary energy need in 2025, or 3.7 million barrels oil equivalent per day, is to be the main growth
engine of Indonesia. Current estimate puts 2.5 million barrel oil equivalent per day gap between demand and supply in 2025.
The era of easy oil or gas is over. According to WoodMac study, 75% of the potential resources are
located offshore (shallow and deep water) in East Indonesia region, the likes of which will need technical
expertise, massive funding and advance technology. Furthermore, around 85% of the existing reserves
of hydrocarbons are of gas while only 15% are of oil, which means infrastructure is critically required to
develop them. In addition, the hydrocarbon source identified in several blocks are technically
challenging due to high content of of CO2 or other impurities that is requiring expensive treating facilities.
Indonesia future energy supply is still under developed, including coal bed methane potentials of 453
TCF, shale gas potential of 574 TCF, other 17.9 billion BOE of hydrocarbon potential and 121 billion ton
of coal resources. On renewables, Indonesia own 40% of worlds geothermal resources potential of
29,000 MW, hydro power potential of 75,000 MW, Biomass of 49,810 MW and huge renewable resources from biofuel, solar, wind and ocean energy.
Any future development of the remaining resources calls for advanced technology support, higher
investments, special expertise, as well as simpler bureaucracy to shorten reserve monetization process.
Technology plays an important role to monetize hydrocarbon potentials and to increase energy supply.
New technology invention in hydraulic fracturing created rapid development of shale resources in US
and become the leader of shale oil and gas producer in the world which its oil production reached 10
million bopd. Enhanced Oil Recovery (EOR) utilizes chemical to ease remaini ng hydrocarbon into
production and new technology to process high CO2 gas are also required to accelerate monetization of huge hydrocarbon potential in Indonesia.
Our challenges are how to invent new technology to develop remaining energy resources in Indonesia as
well as how to implement technology mastering. Technology requires significant investment through
research and development. Academics play key important role in technology invention and should
become the center of research and development. Indonesia requires a new partnership breakthrough in
technology invention, where the collaboration among Academia, Business players and Government
would invent and master the required technology to monetize energy potentials for energy sustainability.
Keywords: technology, oil and gas, deepwater, massive investment, coal bed methane, shale oil/gas,
enhanced oil recovery, geothermal, academia, business player, government.
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High Thermal Conductive Composite Containing a Network of Carbon Fiber and
Carbon Nanotube in Aluminum Matrix
Katsuhiko Sasaki
Department of Mechanical and Intelligent System Engineering
Division of Human Mechanical Design and System
Hokkaido University,
Kita 13, Nishi 8, Kita-ku, Sapporo, Hokkaido, 0608628 Japan
Recently, CNT was used for composite whose base material is aluminum because ranges of industrial
application for the metal based composite material is quite wide. In this paper, high thermal conductive
composite is fabricated by Spark Plasma Sintering (SPS) from aluminum powder and carbon fiber (CF).
The 10wt% of aluminum-silicon alloy is added to the aluminum powder for the improvement of the
interface adherence between CF and aluminum. Carbon nanotube (CNT) is also dispersed on CF fillers
for further improvement of the thermal conductivity of the composite. As a result, the composites
fabricated have about three times higher thermal conductivity than the pure aluminum. Especially, a
small amount dispersion of CNT into CF leads to the large improvement of the thermal conductivity.
Analyses of finite element method (FEM) are conducted to understand mechanisms of the improvement
of thermal conductivity by the dispersion of CNT. The FEM analysis shows that CF-CNT networks play
important roles for the improvement of the thermal conductivity. The effect of the thermal conductivity
on the thermal efficiency of the cooling system of IGBT is also investigated by FEM as one of applications
of the composite. The effect of the thermal anisotropy is, especially, focused on to show the important
role of the thermal anisotropy. Moreover, a method to improve the thermal conductivity of the
composite is shown to decrease the fabrication costs by decreasing in the usage of CF and CNT. Control
of alignments of VGCF is chosen for the method. The alignment is controlled by the contraction flow
made by a contraction channel. The experiments show that the contraction flow is effective to control
the alignment of VGCF.
Key words: Thermal Conductivity, Composite, Carbon nanotube, Finite Element Method, Aluminum
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Metal Hydride Based Energy Storage: From Materials to Systems
Volodymyr A. Yartys
Norwegian University of Science and Technology, Trondheim, Norway and
Institute for Energy Technology, Kjeller, Norway
Hydrogen Cycle based on use of hydrogen and electricity as energy carriers has an advantage of having a zero emission footprint, complemented by high gravimetric energy density of hydrogen. This makes hydrogen energy technology a perfect choice for integrating into the mobile and stationary energy systems. Metal hydrides offer a safe, convenient and efficient way to reversibly accommodate large amounts of hydrogen gas thus creating a platform for building hydrogen driven energy systems where efficiency of reversible conversion of electricity and hydrogen is crucial. A number of requirements should be addressed to improve the system performance. These include achieving high volumetric and gravimetric hydrogen densities; improved energy efficiency of hydrogen production, storage and conversion into electricity; decreased costs and increased life time of hydrogen energy storage. The talk will review our recent studies of two applications of the metal hydrides including (a) Thermally driven MH compression of hydrogen gas and (b) High power metal hydride batteries. Nanostructuring and synthesis of nanocomposites have been successfully applied as the ways to improve the rates of hydrogen exchange during the exothermic/endothermic hydrogen charge and discharge in the hydrogen storage and compression units and the rates of the electrode charge and discharge in the metal hydride batteries. We will present the data of in situ neutron scattering characterization of the metal-hydrogen systems during hydrogen absorption and desorption at applied pressures reaching 1000 bar H2 and of charge-discharge of the metal hydride electrodes at high current densities. These data allowed to model the mechanism and kinetics of the processes of hydrogen exchange in the metal hydrides and to optimize their performance. Finally, various approaches in improving the operation of the metal hydride compressors and rechargeable batteries will be presented and the future trends of the development in the area will be outlined.
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Application of Numerical Simulation to Silicon Crystal Growth Process
Jyh-Chen Chen
Department of Mechanical Engineering, National Central University, Jhongli City, 32001, Taiwan
The photovoltaic (PV) system installation is booming since 2010. The large-scale PV generation costs
already compare with conventional electricity production today. One of major contributions is due to
the development of the silicon growth techniques, which are able to produce the high quality and low
cost silicon wafer of solar cells. In this study, the numerical simulation technique is used to understand
the heat, flow and impurity transport during the process of silicon growth. Two main crystal growth
methods are investigated: Czochralski (CZ) and Directional Solidification (DS). The CZ method is
commonly used in industry for producing the mono silicon crystal, while the DS one is widely adopted
for manufacturing the multicrystalline silicon ingot. The oxygen impurities can be incorporated into the
mono silicon crystal during the CZ process leading to degeneration in the performance of solar cells.
Through the numerical simulation, we are able to understand the transport mechanisms of oxygen
impurities during the CZ growth process and achieve the lower and homogeneous oxygen concentration
in the silicon crystal by adjusting the furnace structure and the operational parameters during the
growth process. On the other hand, the challenge of the DS method is how to grow larger ingot with
higher yield and quality. To achieve this goal, the slightly convex shape of the melt-solid interface during
the DS growth process is required. The best m-c interface shape for growing the 800 kg silicon ingot can be attained by the suitable modification of furnace structure.
Keywords: silicon solar cells, numerical simulation, Czochralski crystal growth, directional solidification
growth
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Conference Program
The 2nd International Conference on Mechanical Engineering | 14
The 2nd International Conference on Mechanical Engineering
Wednesday, September 2, 2015
15.00-18.00 Registration
The Denpasar Ballroom
Thursday, September 3, 2015
08.00 - 08.30 Registration
The Denpasar Ballroom
08.30 - 09.00 Opening Ceremony
The Denpasar Ballroom
09.00 - 09.45 Keynote speech I:
Ir. Lukman Mahfoedz Moderator: Budi Utomo K. Widodo
09.45- 10.30 Keynote speech II:
Prof. Katsuhiko Sasaki Moderator: Unggul Wasiwitono
10.30 - 10.45 Coffee Break
10.45 - 11.30 Keynote speech III:
Prof. Volodymyr Yartys Moderator: Suwarno
11.30 - 12.15 Keynote speech IV:
Prof. Jyh-Chen, Chen Moderator: Bobby Oedy P. Soepangkat
12.15 - 13.30 Lunch
13.30 - 15.00 Parallel Session 1
15.00 - 15.15 Coffee Break
15.15 - 17.15 Parallel Session 2
19.00 - 21.00 GALA DINNER
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Friday, September 4, 2015
08.00 - 08.30 Registration
08.30 - 10.00 Parallel session 3
10.00 - 10.15 Coffee break
10.15 - 11.30 Parallel session 4
11.30 - 13.30 Lunch
13.30 - 15.00 Parallel session 5
15.00 - 15.15 Coffee break
15.15 - 17.00 Parallel session 6
Saturday, September 5, 2015
08.00-20.00 Tour (Optional, at additional cost)
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Thursday, September 3, 2015 Parallel session 1 : 13.30 - 15.00
Room A Room B
Energy, Heat Transfer and Fluid Flow Energy, Heat Transfer and Fluid Flow
Chair : Budi Utomo K. Widodo Chair: Ming-Jyh Chern
13.30 - 13.45
10 Engine test s tand layout and post processing tools
for the detection of many engine performance parameters
Marco Bietresato, Massimiliano Renzi, Simone
Mischiatti and Fabrizio Mazzetto
80 Experimental Study of Thermal Efficiency on Plate -
Fin Solar Thermal Collector
Tri Ayodha Ajiwiguna, Tesla Hamonangan and
Muhammad Ramdlan Kirom
13.45 - 14.00
36
Flame Stability Measurement on Rectangular Slot Meso-scale Combustor
Satworo Adiwidodo, I.N.G. Wardana, Lilis Yuliati and Mega Nur Sasongko
97
Effect of Number of Transfer Unit of Heat Exchangers on the System Performance of an Organic Rankine Cycle System
Chien-Yuh Yang and Alireza Jafari
14.00 - 14.15
125
The Effect of Nitrogen on Flame Characteris tics in Biogas External Premixed Combustion Willyanto Anggono, Fandi Dwiputra Suprianto,
Kenny Purnomo, Tan Hartanto and Tubagus Wijaya
110
Experimental Study The Effect of Angle of Blade Inclination on Coal Swirling Fluidized Bed Drying Melvin E. Simanjuntak, Prabowo and Ahmad Sefriko
14.15 - 14.30
134
Waste Fish Oil Biodiesel Production and Its Performace in Diesel Engine
Kusmiyati, Triana Retno Pratiwi and Tri Wulandari
126
Effect of Mass Flow Rate on a Dryer Room Radiator Pressure Drop and Heat Transfer
Mirmanto Mirmanto, Emmy Sulistyowati and I Ketut Okariawan
14.30 - 14.45
227 Influence of the compression ratio and injection
timing on Sinjai Engine Performance with 50% BioethanolGasoline blended fuel Bambang Sudarmanta, Bambang Junipitoyo, Ary Bachtiar Krisna Putra and I. Nyoman Sutantra
156 Flow and Heat Transfer Enhancement Around
Staggered Tubes Using Rectangular Vortex Generators Prabowo Prabowo, Melvin Emil S. and Nanang R, Rizki Anggiansyah.
14.45 - 15.00
166 Optimization Of Water Scrubbing Method For Enhancement Of Biogas Quali ty
Hendry Sakke Tira, Yesung Allo Padang, Tri Rachmanto and Ahmad Alfan Syahida
130 Improved Junction Temperature Measurement for High Power LED
Tri Ayodha Ajiwiguna, Hun Sik Han and Seo Young Kim
The 2nd International Conference on Mechanical Engineering | 17
Thursday, September 3, 2015 Parallel session 1 : 13.30 - 15.00
Room C Room D
Mechanical Design, Structure, Vibration Manufacturing
Chair: Alief Wikarta Chair: Jiing-Yih Lai
13.30 - 13.45
15 Experimental Study on the Dynamic Characteristics
of Hydro-Magneto-Electric-Regenerative Shock Absorber
Harus Laksana Guntur and Wiwiek Hendrowati
32 Development of technology for rolling and
smoothing with heating the inner sides of cylindrical holes to improve the quality of workpieces in the
machine building.
Kotelnikov V.I, Koshurina A.A, Gavrilov G.N and Chernyshov D.A
13.45 - 14.00
6 Peris taltic mechanism to mimic the esophageal swallowing process
Alberto Caballero Ruiz, Juan Alejandro Hernandez-Angulo, Monserrat Ramirez-Calera, Gabriel Ascanio and Leopoldo Ruiz-Huerta
46 Investigation of Risk Based Decision Making for Mobile Mooring System
Silvianita Silvianita, Mohd Faris Khamidi, Kriyo Sambodho, Nur Syahroni, Yeyes Mulyadi and Muhammad Zikra
14.00 - 14.15
50 Thrust Force of Three Circular Windings of Conductor in Magnetic Field
Sigit Iswahyudi and Wandi Arnandi
174 Characteris tics of Electrode Materials on Machining Performa of Tool Steel SKD11 with EDM Sinking
Suhardjono Suhardjono
14.15 - 14.30
95
An Improved Load-Displacement Prediction for A Coned Disc Spring using the Energy Method
Noor Fawazi and Jung-Youn Lee
89
Relationship Model for a Sustainable Automotive Supply Chain
Halim Shah Hamzah, Shari Mohd Yusof, Muhammad Zameri Mat Saman and Rozetta Dolah
14.30 - 14.45
17 Stress Analysis for a Substrate Holder Module and
Thin Films Grown in an MOCVD Reactor Shu-Wei Guo and Chih-Kuang Lin
119 Numerical simulation of cutting s tress deformation
in tungsten carbide turning tools Pei-Hsing Huang, Jian-Rong Chen and Hong-Zhong Lu
14.45 - 15.00
16
Analysis of the Influence of Hydraulic Cylinder Diameter to the Total Damping Force and the Generated Electrici ty of Regenerative Shock Absorber
Harus Laksana Guntur
222
Flexible And Ergonomically Three Wheel Bike For Post Stroke Patient
I Made Londen Batan, Syifa and Danny Prasetyo
The 2nd International Conference on Mechanical Engineering | 18
Thursday, 3 September 2015 Parallel session 2: 15.15 - 17.15
Room A Room B
Material and Metallurgy Energy, Heat Transfer and Fluid Flow
Chair: Luis Ruiz Crdenas Chair: Dedy Zulhidayat Noor
15.15 - 15.30
8 High Temperature Corrosion of Aluminized AISI
1020 Steel With NaCl and Na2SO4 Coasting
Mohammad Badaruddin, Dwi Asmi and Willy Adriansyah
190 Bottom Shear Stress and Bed Load Sediment
Transport Formula for Modeling the Morphological Change in the Canal Water Intake
Made Mustika Wijaya, Suntoyo and Happy Ayu Damerianne
15.30 - 15.45
19 Investigations of the Mixed Mode Crack Growth Behavior of an Aluminum Alloy
Husaini, Kikuo Kishimoto, Munetsugu Hanji and
Mitsuo Notomi
28 Base aspect ratio effects on resonant fluid sloshing in a rectangular tank
Nima Vaziri and Ming-Jyh Chern
15.45 - 16.00
147 Morphology of crown tube Cr-Ni Austenitic
Stainless Steel HTF failure
Helena Carolina Kis Agustin, Ika Dewi Wijayanti and Rakhmat Satrio Wibowo
99 Numerical Study of Flow characteris tics around an I-
type cylinder 53o near a plane wall
Yuwono Tri Yogi, Ahmad Tohir and Purwanto Purwanto
16.00 - 16.15
192
Effect of volume fraction epoxy-hollow glass microspheres and curing temperature variation on
compressive properties of composites Sutikno None, Wajan Berata, Wahyu Wijanarko
and Indra Sidharta
90
Numerical Simulation of vortex-induced vibration using OpenFOAM
Mohamed Sukri Mat Ali, Mohamad Hafiz Ismail,
Nurshafinaz Mohd Maruai, Sheikh Ahmad Zaki Shaikh Salim and Sallehuddin Muhamad
16.15 - 16.30
146 Experimental Study Of The Influence Of Quenching And Parti tioning Temperature Variation On
Retained Austenite Fraction In AISI 4140 Steel
Wahyu Wijanarko, Wajan Berata, Sutikno and Indra Sidharta
59 Numerical Modeling of Vortex-induced Vibration in Turbulent Flow
Ming-Jyh Chern, Kamau King'Ora, Giri Nugroho, Dedy Zulhidayat Noor and Tzyy-Leng Horng
16.30 - 16.45
112
Experimental Study of Electrode Selection Effects on Mechanical Properties of Underwater Wet
Welded-Joints Nur Syahroni, Imam Rochani and Harfian Nizar
116
Characteris tics of Decompression Tank Internally Pressurized With Water Using OpenFOAM
Syamsuri
16.45 - 17.00
2 Aging behavior in Co-Cr-Mo-C alloys
Alfirano Alfirano, Anistasia Milandia and Suryana
Suryana
181 A CFD Analysis of the Viscous Fluid Behavior of
Glycerin in Various of Sti rring Patterns Retno Wulandari, I.N.G. Wardana, Slamet Wahyudi
and Nurkholis Hamidi
17.00 - 17.15
4
The Production Study of Bipolar Plate From Cuprum-Carbon Nanocomposite in Polypropylene Matrix (PP) for the Fuel Cell Application
Muhammad Fitrullah, A.Herman Yuwono and Sari
Katili
232
Characteris tics Of Two Phase Fluid Flow In Pipe Bends
Slamet Wahyudi, Sudjito Soeparman, Rudy Soenoko
and Arief Yunizar R
The 2nd International Conference on Mechanical Engineering | 19
Thursday, 3 September 2015 Parallel session 2: 15.15 - 17.15
Room C Room D
Mechanical Design, Structure, Vibration Manufacturing
Chair: Harus Laksana Guntur Chair: Suhardjono
15.15 - 15.30
63 Response Reduction of Two DOF Shear Structure
Using TMD and TLCD by Considering Absorber Space Limit and Fluid Motion
Lovely Son, Mulyadi Bur and Meifal Rusli
13 Improving the Injection Molding of Small Optical
Elements by Integrating Reverse Engineering and Mold Flow Analysis
Jiing-Yih Lai, Yao-Yu Wen and Chin-Hao Liu
15.30 - 15.45
23
Anchor Strength Analysis for Mooring of a Floating Breakwater In Senoro Field, Central Sulawesi
Kriyo Sambodho, Yeyes Mulyadi, M Arif Wicaksono and Muhammad Zikra
124
Evaluation of Delay Factors in Jacket Structure Project
Silvianita Silvianita, Andika Trisna Putra, Daniel M Rosyid, Dirta Marina Chamelia Chamelia and Imam
Rochani
15.45 - 16.00
183 Mechanical analysis of the prosthetic knee in
flexion
Daniel Castillo Brito, Olga Ramos Sandoval and Dario Amaya Hurtado
189 Injection Molding Process Simulation of Tensile
Strength and Impact Specimen Test
Dinny Harnany, Arif Wahjudi, I Made Londen Batan and Irma Mappease
16.00 - 16.15
86
Finite element analysis of asymmetric stent for treatment of eccentric plaque
Achmad Syaifudin, Ryo Takeda and Katsuhiko Sasaki
64
Small Business Simulation
Dulat Shukayev, Aggey Semenov , Zhanar Lamasheva and Ainur Abdikadyrova Abdulllahnovna
16.15 - 16.30
96 An Improved Energy Based Load-Displacement
Prediction for Slotted Disc Spring Noor Fawazi and Jung-Youn Lee
133 An Innovative Concept to Improve the Muffler
Performance Using Automated Mechanical Iris Mohammad Ahsan Habib, Ahmad Syed Anwar and
Md. Anayet U. Patwari
16.30 - 16.45
164
Influence of Spring Ratio on Variable Sti ffness and Damping Suspension System Performance
Unggul Wasiwitono, Agus Sigit Pramono,
I Nyoman Sutantra and Yunarko Triwinarno
138
The Effect of Welding Current and Welding Time to Nugget Zone and Tensile Properties of Micro Resis tance Spot Welded Thin Aluminum A1100
Ario Sunar Baskoro, Hakam Muzakki and Winarto
Winarto
16.45 - 17.00
22 Design And Modelling Fender System For Condensate And Sulphuric Acid Jetty At Senoro Field, Central Sulawesi
Muhammad Zikra, Kriyo Sambodho, Teuku Abdul Manan Syahputra and Yeyes Mulyadi
177 Optimization of Cable Ties Injection Molding Process Using Back Propagation Neural Network and Genetic Algori thm (BPNN-GA)
Arif Wahjudi, Bobby Oedy Pramoedyo Soepangkat and Yang Fitri Arriyani
17.00 - 17.15
225 Modeling of a Shell Eco-marathon vehicle based on
drive-train characteris tic and driver modes to predict fuel consumption of the vehicle on a specific track.
Witantyo Witantyo, Sutikno Sutikno, Diva Aulia
and Habibie Rahman
157 Anti -plane Interaction of a Coated Circular Inclusion
with a Crack Located in Matrix
Alief Wikarta
The 2nd International Conference on Mechanical Engineering | 20
Friday, September 4, 2015 Parallel session 3: 08.30 - 10.00
Room A Room B Material and Metallurgy Energy, Heat Transfer and Fluid Flow
Chair: Nur Syahroni Chair: Triyogi Yuwono
08.30 - 08.45
131 Effect of Hydrogen Addition on the characteris tics of ni trided Martensi tic Stainless Steel AISI 420
Istiroyah, I.N.G Wardana and D.J Santjojo
5 Effect of Impeller Condition on Blower Performance, Case Study : Impeller of K-2201 in PT. Pertamina RU
III Hafid Budiman
08.45 - 09.00
163
Effect of Composition on the Microporosi ty, Microstructure, and Macrostructure in the Start-
Up Direct-Chill Casting Billet of Al-Cu Alloys
S. Suyitno
91
Bottom Shear Stress and Bed Load Sediment Transport Due to Irregular Wave Motion
Suntoyo ., A Haris Fattah, Muhammad Yunan Fahmi, Taufiqur Rachman and Hitoshi Tanaka
09.00 - 09.15
182 Metallography Investigation of Dry Corrosion Boiler Tube
Arif Hariyadi, Helena Carolina Kis Agustin and Ika Dewi Wijayanti
215 Design of NACA 4415 Taperless Twistless Wind Turbine Blade Using Twist Optimization for Indonesia
Wind Characteris tics
Felly Rihlat Gibran, Mohamad Safhire and Ahmad Dien Warits
09.15 - 09.30
208 Effects of Deformation and Annealing Temperature on the Microstructures and Mechanical Properties
of Cu-32%Zn Brass
Bondan Tiara Sofyan and Imam Basori
44 Rheology Margarine On Non-Newtonian Fluid Proving Through Small Gap
Agus Harijono, I.N.G Wardana, Nurkholis Hamidi and Denny Widhiyanuriyawan
09.30 - 09.45
140 The Use Of Magnetic Flux To The Welding Of Hot
Roll Quench Tempered Steel
Sugiarto Sugiarto, Anindito Purnowidodo, Rudy Soenoko, Yudy Surya Irawan and A. As'Ad Sodief
42 Numerical Investigation of Dynamic Stall Behavior on
Single Bladed Darrieus Turbine Airfoil Section
Go Hutomo, Galih Bangga and Herman Sasongko
09.45 - 10.00
171 Effect of Variation of Temperature and Electrolyte Solution Concentration to the Corrosion Resis tance
of AISI 304, AISI 316, and Copper in Water Electrolysis Apparatus
Ida Hamidah, Agus Solehudin and Agus Setiawan
233 Experimental Study of the Cross flow Turbine
Djoko Sutikno, Sudjito Soeparman, Rudy Soenoko and
Slamet Wahyudi
The 2nd International Conference on Mechanical Engineering | 21
Friday, September 4, 2015 Parallel session 3: 08.30 - 10.00
Room C Room D Mechanical Design, Structure, Vibration Mechatronics and Control System
Chair: Unggul Wasiwitono Chair: Bobby Oedy P. Soepangkat
08.30 - 08.45
193 Study the effects of adjustment of highest and lowest SOC allowed in battery on fuel
consumption and emission of series hybrid vehicle using ADVISOR Rendy Rachmanto, I Nyoman Sutantra, Bambang
Sudarmanta and Unggul Wasiwitono
114 Reconfiguration of modular robotic system MECABOT
Ricardo Andrs Castillo Estepa, Oscar Fernando
Avils Sanchez, Oscar Gerardo Rubiano Montaa and Germn Andrs Vargas Torres
08.45 - 09.00
179 Simulation Of Two Segments Crash Box Subjected To Frontal Load
Moch. Agus Choiron and Sudjito
122 Dimensionally Homogeneous Jacobian and Conditioning Number
Latifah Nurahmi and Stphane Caro
09.00 - 09.15
98 Experimental Study And Analysis Of The Generated
Electric Power of Salter Duck Type-Ocean Wave Energy Harvester (OWEH) Due To Additional Weight Change and Wave Amplitude
Wiwiek Hendrowati and Harus Laksana Guntur
145 Navigation and Guidance Control System of AUV
with Tra jectory Estimation of Linear Modelling
Teguh Herlambang, Eko Budi Djatmiko and Hendro Nurhadi
09.15 - 09.30
18
Analysis of Wave Climate Variations based on ERA-Interim Reanalysis Data from 1980 to 2014 to
Support Wave Energy Assessment in Indonesia
Muhammad Zikra, Putika Ashfar and Mukhtasor
151
Hardware-In-The-Loop Simulation and Digi tal Control of Double Inverted Pendulum
Germn Buitrago Salazar, Dario Amaya Hurtado and Olga Lucia Ramos Sandoval.
09.30 - 09.45
160 Simplici ty Design Of Hybrid Energy Of Marine Current And Offshore Wind Energy Plant In
Indonesia Mahmud Mustain and Arief Suroso
178 Inverse Kinematics Modelling and Simulation for Upper Case Writing Robot Control using ANFIS
Adlina Taufik Syamlan, Bambang Pramujati and Hendro Nurhadi
09.45 - 10.00
221 Type Synthesis of Two DOF Hybrid Translational
Parallel Manipulators
Latifah Nurahmi, Stephane Caro and Sebastien Briot
The 2nd International Conference on Mechanical Engineering | 22
Friday, September 4, 2015 Parallel session 4: 10.15 - 11.30
Room A Room B Energy, Heat Transfer and Fluid Flow Energy, Heat Transfer and Fluid Flow
Chair: Syamsuri Chair: Prabowo
10.15 - 10.30
173 Analysis of Turbulence Characteris tics in the
Laminar Sub-Layer Region of a Perturbed Turbulent Boundary Layer
Sutardi Sutardi and Wawan Aries Widodo
216 Numerical Studies Of The Influence Of Tube Bank
Configuration In A Staggered Arrangement Of Tubes To Heat Transfer And Flow Characteristics Of Fluid
Ary Bachtiar Krishna Putra, Nina Yunindra and Dina
Yuanita
10.30 - 10.45
121 CFD Simulation of Plasma Leakage and Fluid Flow on the Dengue Virus - Infected Endothelial Cells
Nur Kaliwantoro, Marsetyawan Hne Soesatyo, Indarto, Mohammad Juffrie, Rini Dharmastiti,
Mohammad Tauviqurrahman and Zainal Arifin
135 Test Equipment Design of Thermosyphon Effects On Passive Solar Water Heating System
Ni Ketut Caturwati, Ipick Setiawan, Alief Riptian and Aufar
10.45 - 11.00
158
Model of Ground Water Elevation around Mud Reservoar in Coastal Area of Porong Sidoarjo
Mahmud Mustain
162
Experimental Study of Heat Transfer Characteris tics of Solar Water Heater Collector with Addition Wavy Fins on Pipe
Masykur Masykur and Bambang Arip Dwiyantoro
11.00 - 11.15
81 Numerical simulation of cross-flow around four ci rcular cylinders in-line square configuration near a plane wall
A. Grummy Wailanduw, Triyogi Yuwono and
Wawan Aries Widodo
172 The Role of Heterogeneous Nucleation in Water Based Phase Change Material for Medium Temperature Refrigeration
I Made Rasta - and Ing. Wardana -
11.15 - 11.30
219
CFD based investigations into optimization of di ffuser angle on rear bus body
Wawan Aries Widodo and Mutiara Nuril Karohmah
The 2nd International Conference on Mechanical Engineering | 23
Friday, September 4, 2015 Parallel session 4: 10.15 - 11.30
Room C Room D Energy / Design Manufacturing
Chair: Nurkholis Hamidi Chair: I Made Londen Batan
10.15 - 10.30
93 Design And Modelling Pile Breakwater For LNG
Jetty At Senoro Field, Central Sulawesi
Kriyo Sambodho, Muhammad Zikra, Muhammad Aldhiansyah Rifqi Fauzi and Yeyes Mulyadi
142 Optimization of Multiple Performance
Characteris tics in EDM Process of HPM 38 Steel Using Response Surface Methodology and Non-Linear Programming
Amirul Akbar, Bobby O. P. Soepangkat and Arif Wahjudi
10.30 - 10.45
228 Performance Modeling of A Wave Energy Converter: Pembangkit Lis trik Tenaga Gelombang
Laut Sis tem Bandulan (PLTGL-SB)
Mukhtasor, Rudi W. Prastianto, Irfan S Arief, Harus L Guntur, Mauludiyah and Hadi Setiyawan
132 A Waste Relationship Matrix Model for Better Green Lean Product in Water Processing
Mastiadi Tamjidillah, Pratikto, Purnomo Budi Santoso and Sugiono
10.45 - 11.00
3 Strategy in reducing the pace of the greenhouse gas emission from the electrici ty sector in
Southeast Sulawesi
Mustarum Musaruddin, Aditya Rachman,
Muhammad Hasbi and Akbar Kurdin
176 Multiple-Performance Optimization Of Drilling Parameters And Tool Geometry In Drilling GFRP
Composite Stacks Using Taguchi And Grey Relational Analysis (GRA) Method
Gallih B. Wicaksono, Bobby O. P. Soepangkat and
Iwan Krisnanto
11.00 - 11.15
113
Calculation of Potential Wind Power in Indonesia by Using High Alti tude Wind Energy method
Desmas Arifianto Patriawan and Lusia Permata
Sari Hartanti
200
Tempering Process Gradually to Improve Quality Tool
Raden Edy Purwanto, Agus Sujatmiko and Moh
Hartono
11.15 - 11.30
109 Feasibility Analyses of Grid/Wind/PV Hybrid
Systems for Industrial Application
Wayan G. Santika, Sudirman and I Nyoman Suamir
187 Multi Response Optimization Using Taguchi -Grey-
Fuzzy Method In Drilling Of Kevlar Fiber Reinforced Polymer (KFRP) Stacked
Am Mufarrih, Bobby Soepangkat and Iwan Kristanto
The 2nd International Conference on Mechanical Engineering | 24
Friday, September 4, 2015 Parallel session 5: 13.30 - 15.00
Room A Room B Material and Metallurgy Energy, Heat Transfer and Fluid Flow
Chair: Suwarno Chair: Budi Utomo K. Widodo
13.30 - 13.45
25 Effect of Low Temperature Sintering on the Porosi ty and Microstructure of Porous Zeoli te Ceramic
Sri Mulyo Bondan Respati, Rudy Soenoko, Yudy Surya Irawan and Wahyono Suprapto
14 Cooling Load Estimation to Determine the Proper Capaci ty of Air Conditioners in the Engineering Building at Engineering Academy of Soroako
Mukhlis A. Hamarung, Harman - and Jasman -
13.45 - 14.00
106 Electrochemical Performances Of Li fepo4/C As
Cathode For Aqueous Electrolyte Lithium-Ion Battery
Lukman Noerochim, Ade Okta Yurwendra and Diah
Susanti
108 The variety of furni ture arrangement inside
apartment unit around Jabodetabek area to improve COPc
Bambang Iskandriawan
14.00 - 14.15
33 Synthesis of BiFeO3 Nanoparticle and Single Phase
by Sol -Gel Process for Multiferroic Material
Dwita Suastiyanti and Marlin Wijaya
196 CFD analysis on thermal comfort and indoor ai r
quality affected by parti tions in ai r-conditioned building
Pradip Aryal and Thananchai Leephakpreeda
14.15 - 14.30
150 Biomechanical Analysis of the Spider Thread for the
Reconstruction of the Anterior Cruciate Ligament Reconstruction
Luis Ruiz Crdenas, Olga Ramos and Dario
Amaya Hurtado
47 Analysis Of Effect Of Sub Cooling Performance Of
Vapour Compression Refrigeration System With Cooling Load Variation
Prayudi Suparmin and Roswati Nurhasanah
14.30 - 14.45
11 Strength Analysis of ZnO-Al2O3 Nanocomposite for
Implant Material Innovation
Poppy Puspitasari and Andoko Andoko
148 Performance Improvement Using Subcooling on
Freezer Using R22 and R290 as Refrigerants for Various Ambient Temperatures
Cecep Sunardi, Luga Martin, Kasni Sumeru and Henry
Nasution
14.45 - 15.00
107
Effect Of Carbon Coating On Electrochemical Performance Li ti 2(Po4)3 For Anode Of Aqueous Electrolyte Li thium Ion Battery
Lukman Noerochim, Zeddy Argasani and Diah Susanti
75
Numerical investigation on ejector as an expansion device using R290 as refrigerant in residential air conditioner for various cooling capaci ty
Aries Prih Haryono, Kasni Sumeru, Azhar Abdul Aziz and Henry Nasution
The 2nd International Conference on Mechanical Engineering | 25
Friday, September 4, 2015 Parallel session 5: 13.30 - 15.00
Room C Room D Energy, Heat Transfer and Fluid Flow Manufacturing
Chair: Wawan Aries Widodo Chair: Bambang Pramujati
13.30 - 13.45
128 Improvement of Savonius Blade to Overcome Dead band of Hybrid VAWT Savonius-Darrieus for New and Renewable Energy Cluster for Tropical Country
Erwin Erwin, Anggit Srikuncoro, Tresna Soemardi, Erny Listijorini, Rina Lusiani and Yus Rama Denny
191 The Effects of Pulse On Time and Arc On Time on Surface Quality and Wire Wear Ratio in Wire -EDM of ASSAB XW-42 and ASSAB 8407 2M
Hasriadi -, Bobby Soepangkat and Hari Subiyanto
13.45 - 14.00
58 A Couple of Savonius Wind Mill and Centrifugal
Reaction Pump as A Wind Energy Water Pump System
Y B Lukiyanto
205 Modeling of Well Service and Workover Scheduling
to Optimize Oil Well Maintenance
Sudiyono Kromodihardjo and Ergo Kromodihardjo
14.00 - 14.15
143 Structural Design Optimization of Vertical Axis Wind Turbine Type Darrieus-Savonius
Bambang A. Dwiyantoro, Triyogi Yuwono and Vivien Suphandani
194 Optimization Of Multi Response Using Taguchi Grey-Fuzzy End Milling Process Material Assab Xw-42 With
Cooling Liquid Nitrogen
Dian Ridlo Pamuji, Bobby Soepangkat and Winarto
14.15 - 14.30
170 Simulation Savonius Wind Turbine with Multi-
Deflector
Budi Sugiharto, Sudjito Soeparman, Denny Widhiyanuriyawan and Slamet Wahyudi
202 Groove Overhang Effect on Surface Roughness on
CNC Vertical Milling Process
Agus Sujatmiko, Mohamad Hartono and Raden Edy Purwanto
14.30 - 14.45
144 The Dynamic Characteris tics of Vertical Axis Wind Turbine Type H
Bambang A. Dwiyantoro
195 Optimization of Multiple Performance Characteris tics in the WEDM Process of Buderus
2379 ISO-B Tool Steel Using Taguchi -Grey-Fuzzy Logic Method
Mega Diantoro and Bobby Soepangkat
14.45 - 15.00
218 Investigation Of Factors Affecting Power Curve
Wind Turbine Blade
I Kade Wiratama, I Made Mara and I Made Nuarsa
224 Simulation Of Ironing Process For Bullet Case To Get
Minimum Forming Force With Variation Of Die Angle And Reduction Wall Thickness
M.Nushron Ali Mukhtar, I Made Londen Batan,
Bambang Pramujati and Agus Sigit Pramono
The 2nd International Conference on Mechanical Engineering | 26
Friday, September 4, 2015 Parallel session 6: 15.15 - 17.00
Room A Room B Material and Metallurgy Energy, Heat Transfer and Fluid Flow
Chair: Lukman Noerochim Chair: Ary Bachtiar KP.
15.15 - 15.30
12 Effect Of Temperature And Time Of Two-Step Austempering Method On Mechanical Properties
For Nodular Cast Iron Andoko Andoko and Poppy Puspitasari
201 Numerical s tudy of mixed convection around a heated ci rcular cylinder
Vivien S. Djanali, Ahmad Nurdian Syah and Syaiful Rizal
15.30 - 15.45
199
Effect of adhesive layer thickness on the shear s trength of adhesively bonded s teel joints in wet environment Sugiman Sugiman, Ilham Akbar, Emmy Dyah Sulistyowati and Paryanto Dwi Setyawan
104
Convective Regimes on Porous Media within Sudden Changed Channel Due to Tangential Gas Flow Eko Siswanto, Angga Veriyawan Rahana, Mochammad Agus Choiron, Nagata Ryuichi, Katsurayama Hiroshi and Katoh Yasuo
15.45 - 16.00
214 Effect of Fillers Content on Mechanical Strength and Failure Mode of Aluminium Bonded with
Epoxy-Based Adhesive Khairul Anam, Anindito Purnowidodo and Dharu Smaradhana
55 Predicting Temperature Profile and Temperature His tory for Varied Parameters of a Welding Process
Using Rosenthals Approach for Semi-infini te Solid Djarot B. Darmadi
16.00 - 16.15
20 Effects of Ci tric Acid/BaTiO3 Weight Fractions and Time of Sintering in Sol Gel Process on Electric Saturation Polarization Values and Phase Composition Dwita Suastiyanti and Marlin Wijaya
56 Extraction of Essential Oils from Patchouli Plant Using Advanced Techniques of Microwave - Assisted Hydrodis tillation Nurkholis Hamidi
16.15 - 16.30
117 Effect Of Dromus Oil Amount In Cooling Media Against Tensile Strength And Microstructure
Results Of St 60 Steel Due To Hardening Tempering Process Poppy Puspitasari, Dewi Puspitasari, Novi Fairuz Aishoni, Muhammad Ilman Nur Sasongko, Wahyu Candra and Suci Trisna Wati
60 The Utilization Of Paraffin And Beeswax As Heat Energy Storage In Infant Incubator
Sekar Sinaringati, Nandy Putra, Muhammad Amin and Fitri Afriyanti
16.30 - 16.45
37 Friction Sti r Welding On Corner Joint With New Surface Preparation Design Widia Setiawan and Djarot B. Darmadi
230 Efficiency of Household Gas Stove by Optimizing Gap of Pan and Stove Cover Agung Sugeng Widodo
16.45 - 17.00
211 Effect of The Use of Gas Argon-Nitrogen on The Balance of Microstructure in Welding Super Duplex Stainless Steel Su Suheni
92 Design Concept of Small Long-Li fe PWR Using Thorium Fuel Moh. Nurul Subkhi, Zaki Su'Ud, Abdul Waris and Sidik Permana
The 2nd International Conference on Mechanical Engineering | 27
Friday, September 4, 2015 Parallel session 6: 15.15 - 17.00
Room C Room D Energy, Heat Transfer and Fluid Flow Manufacturing
Chair: Bambang Sudarmanta Chair: Sudiyono Kromodihardjo
15.15 - 15.30
139 The Effect of Pretreatment and Variety of Microorganisms to the Production of Ethanol from
Coffee Pulp Tri Widjaja, Ali Altway, Siti Nurkhamidah, Luluk Edahwati, Fibrillian Zata Lini, and Fixalis Oktafia.
231 Modelling and Simulation Analysis of Solenoid Valve for Spring Constant Influence to Dynamic Response
Masruki Kabib, Bambang Pramujati, I Made Londen Batan and Agus Sigit Pramono
15.30 - 15.45
165
Degradation Of Gliycerol With Sonication Method: The influence of the addition of a heterogeneous catalyst Ruslan Kalla, S Sumarno and M Mahfud
85
A Comparison Process of 3D Model Quali ty Using 3D Laser Scanning Triangulation Method Sally Cahyati, Mark Budiman and Fadhli Umar Lubis
15.45 - 16.00
185 The Effect of Nitrogen Stress in Medium for
Increasing Carbohydrate as A Bioetanol Source and Carotenoid as An Antioxidant from Chlorella Zofingiensis Culture
Eko Agus Suyono, Umi Muavatun, Faridatul Husna, Husnul Khotimah, Ika Pratiwi, Rahmah Husna, Fitri Cahyani, Yuni Purwanti and Thoriq Teja Samudra
229 Optimization of Multiple Performance
Characteris tics in Wire Electrical Discharge Machining (WEDM) Process of Buderus 2080 Tool Steel Using Taguchi-Grey-Fuzzy Method
Dhika Aditya Purnomo, Bobby O. P. Soepangkat and Helena Carolina Kis Agustin
16.00 - 16.15
186
Effect of Rumen Fluid Microorganism and Effective Microorganism on Biogas Production from Rice Straw Waste Tri Widjaja, Ali Altway, Setiyo Gunawan and Noviyanto.
223
A Review Paper on Product Surface Defect Detection of Ironing Process Akhmad Faizin, Arif Wahjudi, I Made Londen Batan and Agus Sigit Pramono
16.15 - 16.30
136 Study Of Composition Of Water Fuel Emulsion By Taguchi Experimental Method
Agung Sudrajad, Ipick Setiawan, and Achmad Faisal.
155 Parametric Optimization Of Wire Electrical Discharge Machining Process On Aisi H13 Tool Steel Using Weighted Principal Component Analysis (Wpca) And
Taguchi Method Nuraini Lusi, Khairul Muzaka and Bobby Oedy Pramoedyo Soepangkat
16.30 - 16.45
53
The Calori fic Values of Solid and Liquid Yields Consequenced by Temperatures of Mahogany Pyrolsis Widya Wijayanti and Mega Nur Sasongko
129
The Influence of Binder Variation Using Eruption Kelud Sand Against Sand Mold Strength, Quality and Fluidity Results on Al-Si Metal Casting Deby Yangin Drajat, Dewi Puspitasari, Zaim Zarkasi, Muhammad Ilman Nur Sasongko, Rudi Anggoro
Kurniawan, Poppy Puspitasari, Putut Murdanto and Tuwoso Tuwoso
16.45 - 17.00
48 The Effect of CO2 Fraction on the Flame Stability of Biogas Premixed Flame Mega Nur Sasongko and Widya Wijayanti
188 Optimization Of Multi Response Using Taghuci -Grey-Fuzzy In Cryogenic Face Milling Material ASSAB XW42 Mohammad Wahid, Bobby Soepangkat and Bambang Pramujati
The 2nd International Conference on Mechanical Engineering | 28
Energy, Heat Transfer and Fluid Flow
The 2nd International Conference on Mechanical Engineering | 29
Engine test stand layout and post processing tools for the detection
of many engine performance parameters
Marco Bietresato 1, Massimiliano Renzi1, Simone Mischiatti1 and Fabrizio Mazzet to1
1Free University of Bozen-Bolzano, Faculty of Science and Technology Fa.S.T., Piazza Universit 5, I-39100 Bolzano (BZ), Italy
E-Mail: marco.bietresato@unibz.it
ABSTRACT An eddy-current brake, capable of measuring the torque and the power of internal
combustion engines at desired rotational speeds, has been fully interfaced with an external NI cDAQ
9178 data logger. Thanks to this system, it is possible to collect and synchronize the data coming from the
test stand and from several other sensors equipping the motors under test: a load cell used in a chrono-
gravimetric fuel consumption system, many thermocouples, a lambda probe, an exhaust gas analyser. To
have a better control of the position of the accelerator leverage during the trials (hence a higher
repeatability), a control system, based on an Arduino board, directly acts on the throttling valve through a
servomotor. Then, a series of software tools allows the interfacing of the various devices and the
automatic post-processing of the acquired data (filtering of signals, recognition of data corresponding to
the single engine speeds, time-averaging). The described testing equipment and the implemented
procedures allow investigating both the whole operating performance of a motor (i.e., at different engine
speeds and loads) and a single parameters value, in particular: the torque, the power, the fuel
consumption of the motor, the composition (up to nine different gases) and the temperature of the
exhausts, the temperature of the engine head and of the cylinder block, the combustion quality and many
other additional parameters describing the engine performance. This test stand with the described post
processing procedures will be used in future works to evaluate the performance of traditional and
alternative-fuelled internal combustion engines for both agricultural and co-generative applications.
Keywords : engine test stand, agricultural engines, engine performance detection
The 2nd International Conference on Mechanical Engineering | 30
Flame Stability Measurement on Rectangular Slot Meso-scale
Combustor
Satworo Adiwidodo1, a , I.N.G. Wardana2, b , Lilis Yuliati3, c , Mega Nursa Songko4, d
1State Polytechnic of Malang, J l. Soekarno-Hatta No. 9, Malang 65141, Indonesia
2, 3, 4Brawi jaya University, J l. MT. Haryono No. 165, Malang 65145, Indonesia
asatworo.adiwidodo@polinema.ac.id, bwardana@ub.ac.id, c lil is_y@ub.ac.id, dmegasasongko@ub.ac.id
Abstract The biggest problem of combustion in the micro-scale or meso-scale combustor is heat loss.
Heat loss led to a difficult of stable flame. This research aims to elucidate the flame stabilization and
flammability limit of LPG-oxygen premixed flame, temperature distribution and flame visualization.
Flame stabilization and flammability limit map are shows in - U plane. The result shows that there are
six regions in the map that is stable without noise, stable with noise, transition zone, dead zone, pseudo
stable, and blow off. Measurement parameters are LPG-oxygen flow velocity at various equivalent ratio
and temperature. The flame stabilization and flammability limit map within measurement parameters are
discussed.
Keywords : flame stabilization, flammability limit, meso-scale combustor, rectangular slot, premixed
flame.
The 2nd International Conference on Mechanical Engineering | 31
The Effect of Nitrogen on Flame Characteristics in Biogas External
Premixed Combustion
Willyanto Anggono1,a, Fandi D wiputra Suprianto2, Kenny Purnomo3, Tan Ivan Hartanto4 and Tubagus P. Wijaya5
1,2,3,4,5Mechanical Engineering Department, Petra Christian Unive rsity, Surabaya, Indonesia
Email : awilly@petra.ac.id
.
Abstract Biogas contains more than 50% methane (CH4), is a renewable and eco-friendly fuel
produced by bacterial action. Not only is biogas flammable but it also contains inhibitors like carbon
dioxide and nitrogen, as well as small amounts of H2, O2, H2S and others. Several associated studies
have been conducted in order to examine biogas combustion characteristics in external combustion and
flame angle, flame height and dimensionless flame height are the important characteristics in external
premixed combustion. This researchs aims were to discover the influences of N2 as it is the second most
prevalent inhibitor in biogas by burning stoichiometric fuel mixtures (CH4 and N2 (0%-50% of fuel)) and
oxygen in an experimental external premixed combustion burner whose nozzle tip diameter was 5 mm.
The burner was connected to a hose from the oxygen tank and another hose from the fuel tank. Two
regulators and flowmeters were placed on each tank to monitor the flow supplied to the mixer and burner.
The valves were used to stop or open the fluid supply. The outcome flame propagation is then recorded
by a high speed camera and then processed through a computer system. The results indicate that N2
influenced the flame angle, flame height and dimensionless flame height. The higher the N2 content
inside the fuel, the shorter the flame height and the lower the dimensionless flame height. Moreover, increasing the N2 content created larger the flame angle.
Keywords: Biogas, nitrogen, external combustion, sustainable energy, flame characteristics
The 2nd International Conference on Mechanical Engineering | 32
Waste Fish Oil Biodiesel Production and Its Performace in Diesel
Engine
Kusmiyati1, Triana Retno Pratiwi2, and Tri Wulandari3
1, 2 , 3Renewable Energy Research Centre (PSEA) Department of Chemical Engineering Faculty of Engineering, Univ ersitas Muhammadiyah Surakarta
J l. A. Yani Tromol Pos 1 PabelanKartasura 57102 Phone (0271)717417
E-mail: kusmiyati@ums.ac.id, psea_ums2014@yahoo .com
ABSTRACT Waste Fish oil was used as raw material for biodiesel production. Two stages processe,
esterification and transesterification were applied to convert waste fish oil to biodiesel. An acid catalyst
(H2SO4) and alkaline catalyst were used for catalysts of the esterification and transesterification,
respectively. Fish oil, methanol or ethanol, and catalyst were reacted in a three-neck flask at temperature
at 60 C and time of 2 h. The effect of alcohol types on biodiesel conversion showed that the optimum
condition (conversion of 66.09%) was obtained using methanol. The density, kinematic viscosity, heating
value of fish oil biodiesel were 0.8822 g/mL, 4.741 mm2/s. 9713 cal/g, respectively. The biodiesel was
tested on diesel engines to determine the engine torque, power and Brake Specific Fuel Consumption as
compared to diesel oil. At lower speed engine of 1200-1400 rpm, the engine torque of waste fish oil
biodiesel and diesel oil was higher than that at higher speed engine of 1400-1500 rpm. Blendings of waste
fish oil had higher engine torque than that of diesel oil. Blends fuel of waste fish oil biodiesel had higher
power engine as compared to that of diesel oil fuel at speed of 1200-1500 rpm. Blends waste fish oil biodiesel had lower BSFC (Brake Specific Fuel Consumption) as compared to that of pure diesel oil.
Keywords : biodiesel; waste fish oil; esterification; transesterification; diesel engine performance.
The 2nd International Conference on Mechanical Engineering | 33
Influence of the compression ratio and injection timing on Sinjai
Engine Performance with 50% BioethanolGasoline blended fuel
Bambang Sudarmanta1, a, Bambang Junipitoyo1, b, Ary Bachtiar Krisna Putra1, b, I. Nyoman Sutantra1, c
1Fuels and Combustion Engineering Laboratory, Mechanical Engineering Department ITS Indonesia
Email : asudarmanta@me.its.ac.id, atpbb@me.its.ac.id, cAry@me.its.ac.id, dtantra@me.its.ac.id
Abstract Influence of the compression ratio and injection timing on Sinjai engine performance
with 50% bioethanol-gasoline blended fuel were investigated on water brake dynamometer. The
properties of bioethanol were measured based on American Society for Testing Materials
(ASTM) standards. Fuel consumption was measured by the time of fuel consumption per 25 cc
of fuel in a measuring glass where as combustion air consumption was measured using an air
flow meter. The emission parameters, exhaust gas temperature and air fuel ratio were measured
using STARGAS exhaust gas analyzer. The compression ratio was increased from 9,6, 10,6
to11,6 dan timing injection retarded 120, 140, 160 to 180 BTDC. Engine performance testing
conducted in a variable speed, starting the engine rev 2000 to 5000 rpm with intervals of an
increase of 500 rpm. The engine performance parameters evaluated were torque, brake mean
effective pressure, power, specific fuel consumption, thermal efficiency, exhaust gas
composition and volumetric efficiency. The results showed that the increase of compression
ratios improved engine performance for 50% bioethanol-gasoline blended fuel throughout all the
speed range investigated, while the injection timing setting indicates that at 140 BTDC injection
timing to produce the best engine performance. The use of 50% bioethanol-gasoline blended fuel
has an octane number of 98 so it is more resistant to the effects of knocking. The increase in
compression ratio up to 11.6 can improve performance up to 12%, whereas the setting at 140
BTDC injection timing can improve performance up to 20%. While the emission CO and HC
emissions decreased significantly as a result of the leaning effect caused by the bioethanol
addition. In this study, it was found that using 50% bioetanol-gasoline blended fuel, would be
reduced the CO and HC emissions until 28% and 22% Respectively.
Keywords : SINJAI engine, bioethanol, gasoline, blended fuel, compression ratio, injection
timing performance and emission.
The 2nd International Conference on Mechanical Engineering | 34
Optimization of WaterScrubbingMethod for Enhancement of Biogas
Quality through Base Solutions Addition
Hendry Sakke Tira1, a, Yesung Allo Padang1, b,Tri Rachmanto1,cand Ahmad Alfan Syahida
1
1Mechanical Engineering Department, Engineering Faculty, Mataram University, Mataram NTB 83125, Indonesia
Email : ahendrytira@unram.ac.id, byesungallopadang@gmail.com, ctrachmanto@unram.ac.id
Abstract The addition of base NaOH and KOH solutions and the application of an air stone
and a stirrer to develop turbulence in water scrubbing method were carried out to study the
purification process of raw biogas. Various concentrations of the base solutions a nd constant
stirrer speed was applied. The work results showed that the best performance in increasing CH4
content, about 70% improvement, was reached with the addition of NaOH on 2% concentration.
On the other hand, about 96% and 100% improvement for CO2 and H2S respectively were
obtained under 2% NaOH addition coupled with a stirrer. The addition of base solutions was
very effective to increase absorbent pH level, thus maintaining absorption process in longer
duration and prevented saturation of absorbent. Moreover, the application of a stirrer in packed
bed column further improved the biogas quality. The improvement was resulted from the
generated biogas bubble and turbulence which led to prolong contact time between absorbent
and biogas
Keywords: Biogas, base solution, purification, water scrubbing.
The 2nd International Conference on Mechanical Engineering | 35
Experimental Study of Thermal Efficiency on Plate-Fin Solar Thermal
Collector
Tri Ayodha Ajiwiguna1, Tesla Hamonangan1 and Muhammad Ramdlan Kirom 1
1Engineering Physics, Telkom University, Jalan Telekomunik asi Terusan Buah Batu, Bandung, Indonesia
E-Mail: triayodha@telkomuniversity.ac.id
ABSTRACT Plate- fin solar thermal collector with the dimension of plate 40 x 80 cm and 13
fins is constructed and its performance is investigated. Ambient air is forced to flow through the
solar collector by using fans. The measurements of incident solar radiation, input air
temperature, output air temperature, and velocity of air flow are conducted simultaneously. Data
from measurements are used to calculate heat absorbed by air flow and the efficiency of solar
collector system. The results show that the increasing of air temperature is 14.3 oC, averaged
heat power absorbed is 102.1 W, and the thermal efficiency is 49%.
Keywords: Renewable Energy, Solar Thermal, Plat-fin collector, Thermal Efficiency
The 2nd International Conference on Mechanical Engineering | 36
Effect of Number of Transfer Unit of Heat Exchangers on the System
Performance of an Organic Rankine Cycle System
Chien-Yuh YAN a, Alireza