Sub: ADVANCED HEAT AND MASS TRANSFER1. (a) Explain with neat sketches the working principal of general heat conduction of a heat transfer ?. (b) Explain about the initial and boundary of the conditions?2. (a) Explain about the simplified heat transfer in 1D and 2D FINS ?. (b) Explain about different modes of heat transfer ?.3. (a) Explain about the Lumped system analysis and semi infinite of a solids of a 2D transient heat conduction ?. (b) The initial uniform temperature of a thick concrete wall (=1.610m/s, k=0.94w/m c) of a jet Engine test cell is 25c.The surface temperature of the wall suddenly rises to 340c when the wall Combination of exhaust gases from the turbojet and spray of cooling water occurs Determine:(1) The temperature at a point 80 mm from the surface after 8 hours :(2) The instantaneous heat flow rate at the specified plane and at the surface itself at the instantMentioned at (1). Use of solution for semi infinite solid.4. (a) Explain about the concepts of a continuity and momentum of the forced convection of the Equations ? (b) Explain about the Derivation of energy equation and Dimensional analysis of a Similitude?5. (a) Air at 20c flows over a thin plate with a velocity of 3m/sec. The plate is 2 m long and 1m Wide. Estimate the boundary layer thickness at the trailing edge of the plate and total drag Force experienced by the plate also calculate the mass flow of air which enters the boundary Layer between x=30cm and x=80cm.The physical properties of air 20c are: P = 1017kg/m, v = 15 10m/s. (b) Water at 25c flows through a tube of 100 mm diameter. Determind the flow rate that will result In a Reynolds number of 1500. The tube is provided with a nichrome heating element on its surface And receives a sonstant heat flux of 400 W/m length of the tube. Determind the average heat trans- -fer co efficient between the water and the tube wall , assuming fully developed conditions. Also Determine the length of the tube for the bulk temperature of water to rise from 25cto 30c. SUB: ADVANCED ENERGY TECHNOLOGIES 1.(a) Explain with neat sketh of a lamont boiler and discuss the relative merits and demerits ?. (b) Explain about the causes of boiler tube failures and prevention ?.2.(a) Explain with neat sketchs of a supercharged boilers and waste heat boilers ?. (b) Explain with neat sketch of a Loeffler boiler and discuss the relative merits and demerits ?.3.(a) Explain different types of a FBC and working principal of FBC ?. (b) Explain about the corrosion of FBC system and control of FBC systems ?.4.(a) Briefly explain about the Erosion and corrosion and its prevention in FBC boilers ?. (b) What are the advantages and disadvantages of a FBC systems ?.5.(a) Explain with neat sketch the combined cycle with gas production from coal and arrangement of Combined cycle ?. (b) Briefly explain about the combined cycles using PFBC system ?. SUB:ENERGY AUDITING AND MANAGEMENT 1.(a) Explain about rules for efficient energy conservation ?. (b) State general principls of Qualities and functions of energy managers ?.2.(a) What is energy auditing ? What are the objectives of it and level of responsibility of a control Of energy ?. (b) Explain process of energy conservation schemes and sankey diagrams of a load profiles ?.3.(a) How many types of a energy Audits ?. Explain briefly the Questinnarie of a energy Audit of Industries ?. (b) Explain about the General energy audit and detailed of energy audit of a energy saving potential ?.4.(a) Explain about effect of insulation on on current carrying wires and economic thickness of insulation (b) Explain about the critical radius of insulation ?.5.(a) What are the properties of theramal insulations ?. (b) What are the classification of insulation materials ? SUB: DESIGN OF HEAT TRANSFER EQUIPMENT 1.(a) Derive an expression for parallel and counter flow on a effectiveness method ?. (b) Explain about cross flow heat exchanges ?.2.(a) Derive an expression for overall heat transfer co efficient and pressure drop in a condenser ?. (b) Explain about extended fin surfaces of a LMTD correction factor ?.3.(a) Explain about temperature distribution and heat flow in an evaporator of a pressure drop in a Evaporators ?. (b) Describe the factors to be consider in the design of heat transfer equipment of a correction factor?4.(a) How many types of a design of a compressors of a equivalent shaft of a work?. (b) Describe the factors affection total volumemetric efficiency of a compound compression with inter Cooling and rotary compressors surgings ?.5.(a) A shell and tube steam condenser is to be constructed of 30 mm outer diameter, 20 mm inner Diameter, single pass horizontal tubes with steam condensing at a temprature of 54c outside the Tubes. The cooling water enters each tube at a temperature of 10c. The heat transfer co efficient For the condensation of steam is 8000 W/mc. Calculate the tube length. Calculate the condensa -Tion rate per tube . (b) A single stage single acting reciprocating receiver had a bore of 180 mm and a stroke of 300 mm. It receives vapour refrigerant at 1 bar and delivers it at 5 bar. If the compression and expansion follow The pv1.25 = constant and clearance volume is 5% of the stroke volume, Determine:(1) The power required to drivw the compressor if it rests at 600 rpm.

(2) Thw volumetric efficiency of the compressor .

SUB: COMPULATIONAL FLUID DYNAMICS

1.(a) Explain the alternate direct implicit method of discrediting one dimensional transient heat

Conduction equation and state its advantages?.

(b) Briefly explain about finite element and finite volume methods?.

2. Using Taylors series derive first order forward difference and rearward difference

Expressions for u/ x, u/y with first order accurate. Express the second order derivative Term u/x and mixed derivative term u/xy in difference from with second order

Accurate.

3.(a) Using finite volume method of a formation of basic rules for control volume approach using

1D steady heat conduction equation without heat generation?.

(b) Briefly Explain about interface thermal conductivity?.

4.(a) Describe the 2 D steady heat conduction and un steady heat conduction ?.

(b) Explain the 3 D steady heat conduction and u - steady heat conduction ?.

5. A Thin plate is initially at a uniform temperature of 500c. At a certain time of t = 1 sec the

Temperature at the east side of the plate is suddenly reduced to 3c. The other surface is Insulated. Using the implicit finite volume method in conjunction with a suitable time step

Size to calculate the transient temperature distribution of the slab and compare it with the

Analytical solution at time t = 100 sec. The date are: plate thickness L = 4 cm, thermal conductivek = 25 W/m / k and pc = 10 10 j/m/k.

SUB: ENERGY STORAGE SYSTEMS

1.(a) What are the need of a energy storage ?.

(b) Explain about the different modes of energy storage ?.

2. Briefly explain about compressed air energy storage?.

3.(a) Describe the chemical energy storage . (1) Thermo chemical (2) Bio chemical (3) Electro chemical (b) Briefly explain the fossil fuels and synthetic fuels of a Hydrogen storage ?. 4.(a) Explain about the SHS mediums and stratified storage systems ?. (B) Explain about the Rock bed storage systems and thermal storage in buildings ?. 5.(a) Briefly explain the earth storage and energy storage in aquifers ?. (b) What are the heat storage in SHS systems and aquifers storage ?.