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Transcript of Energy recovery presentation
1 www.1-ACT.com/HVAC
Innovations in Action
Advanced Cooling Technologies, Inc. Energy Recovery Systems
Overview Mark Stevens, New Business Development
[email protected], 717-344-0061 Pete Dussinger, VP Engineering, ER Products
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Presentation Overview
• Company History
• ACT Capability & Product Scope
• Heat Pipe Basics
• Energy Recovery System Types & Comparison
• Overview Heat Pipe Wrap-Around Heat Exchangers
• Calculated Performance & Savings Examples for WAHX
• Air-to-Air Heat Pipe Heat Exchanger Overview
• Other Energy Recovery Systems
• Industry Drivers
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Advanced Cooling Technologies, Inc.
Founded in 2003 Located in Lancaster, PA
40,000 sq.ft.+ Office, Laboratory & Manufacturing Space
2011 Tibbett's Award Winner Made annually to small firms, projects, organizations and individuals judged to exemplify the very best in Small Business Innovative Research (SBIR) achievement.
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Advanced Cooling Technologies, Inc.
Primary Markets Energy Recovery
Military & Industrial Cooling
Satellite Thermal Control
Temperature Calibration and Control
Contract R&D and Technical Services
ISO 9001:2008 Certified for Terrestrial Product Design and Manufacturing
AS/EN/JISQ9100:2009 Certified for Aerospace Products Design and Manufacturing
Quality System
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Advanced Cooling Technologies, Inc.
ACT Team Overview
73 Full Time Employees
33 Engineers
34 Technicians / Production
5 SG&A
Engineering Backgrounds
11 Ph.D’s
12 Masters
11 Bachelors
M.E. , E.E., Chem. E, Nuclear,
Physics & Manufacturing
Cumulative Professional
Team Experience:
Publications : > 400+
200 Years
Patents Granted : > 70
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ACT Capabilities and Equipment
Capabilities – Thermal Design and Analysis
– Thermal Testing Characterization, and Validation
– Prototype Assembly
– Heat Pipe Manufacturing
– Assembly Manufacturing
– Certified Welding
– Brazing
– Soldering
Equipment – High Temperature Furnaces
– Reducing Atmosphere
– Vacuum
– HVAC HPHX Testing
– Thermal Chambers
– Data Acquisition
– Flow Bench
– Vacuum Chamber
– Process Oven
– Swager
– Heat Pipe Production Line
– Helium Mass Spectrometer
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Heat Pipe Beginnings
• The original heat pipe operating principle was developed by
Richard S. Gaugler of the General Motors Corporation in 1942.
• Modern heat pipe technology was originated from the Los Alamos Scientific Laboratory by George Grover in 1963.
• Advanced Cooling Technologies’ Yale Eastman (currently a Director of ACT), a few years later describes the theory and history of the heat pipe technology in an article published in Scientific American, May 1968
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Heat Pipes Are Super Conductors
Vapor Space
Liquid Film
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Heat Pipes Are Super Conductors 200 Times Better Thermal Conductor Than Copper
Isothermal
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Examples of Heat Pipe Applications
Satellite Heat Pipes: TACSAT 4
Military Satellite
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Examples of Heat Pipe Assemblies
High-Power Heat Pipes up to 500 Watts/cm2
Heat Sinks Optimized with Heat Pipes
Heat Pipes for Electronics
High Temperature Heat Pipes
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Embedded Heat Pipe Application Shipboard Radar Application Reduced Hot Spots by 30°C
13” x 20”
Pumped liquid cool rail on plate edge
WITHOUT HEAT PIPES
WITH HEAT PIPES
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Heat Pipes in Energy Recovery
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ACT Energy Recovery Performance Testing Testing of Heat Pipe Power (Watts) for HVAC Applications
Test Measurement Criteria Include:
1. Size (diameter) of heat pipe
2. Performance based on
amount of charge (ccs)
3. Performance based on
internal heat pipe design
(smooth or grooved)
4. Refrigeration Type
performance (R-134a, R-410A)
5. Response to temperature
6. Testing angle
Energy Recovery Test Setup: Multiple temperature
measurements are profiled along each energy recovery heat pipe under test
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ACT Climate Test Chamber Testing Psychrometric Performance of Wrap-Around Dehumidification Heat Pipe Systems
Test Chamber Capabilities: • 0 – 700 fpm Face Velocity • Up to 100% Relative Humidity • Temperature Range: Ambient
to >120º F • Multiple Data Point Acquisition
AHRI 930P Committee Performance Rating of Heat Exchangers in Series with Dehumidification Cooling
Apparatus
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ACT Energy Recovery Technology Types
Wrap-Around Systems Enhanced Dehumidification
Air-to-Air Systems
PASSIVE-SPLIT THERMOSYPHON LOOP
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ACT Energy Recovery Technology Types
SUMMER/WINTER PUMP LOOP SYSTEM
PASSIVE SUMMER/ PUMP WINTER
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Comparison of Energy Recovery Systems
Energy Recovery Technology Comparisons
Energy Recovery Type
Sensible Heat Transfer
Latent Heat Transfer
PRESSURE DROP
TYPICAL
TYPICAL EFFECTIVENESS
CROSS CONTIMINATION
MOVING PARTS
MAINTENANCE REQUIED OTHER THAN CLEANING
DUCT WORK REQUIED SIDE-
BY-SIDE
INSTALLATION DIMENSIONAL
ISSUES
Electrical Power
Required
Heat Pipe Wrap-Around YES Enhanced
Dehumidification UNDER 0.5 10-50%(*) NO NO NO NO NO NO
Heat Pipe Air-to-Air YES NO UNDER 0.5 45-65% NO NO NO YES Fit's in place of
sensible wheel NO
Heat Pipe Split Passive YES NO UNDER 0.5 40-60% NO NO NO NO FullFlexibility NO
Run Around Loops YES NO UNDER 0.5 40-60% NO YES YES NO NO YES
Plate Exchangers YES YES with increased cost > 0.75 < 1.2 50-80% NO NO NO YES Very Large as
CFM Increase NO
Energy Recovery Wheels YES YES > 0.75 < 1.2 50-80% YES upto 12% YES YES YES NO YES
* Effectiveness is calculated for each application to meet the desired re-heat temperature.
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Wrap-Around Heat Pipe Heat Exchangers for
100% Dedicated Outdoor Air Energy Recovery
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ACT –HP-WAHX Wrap-Around Dehumidification Features: Provides pre-cooling of incoming air stream to increase the AHU’s ability to remove moisture (latent energy) Accomplishes system re-heat passively saving gas or resistive reheat cost Sizes up to 100,000 CFM Generally easy to retrofit without major duct work. Low Maintenance (no moving parts) No plugging – No Belts – No Bearings 45% - 65% effectiveness Small drop in static pressure, typically 0.15 to 0.45 inches of water 2-6 Row WAHX
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ACT-HP-WAHX Wrap-Around System Typical Air Handler Application
92ºF / 78.0FWB
80.0ºF / 74.9 FWB
52.0ºF / 51.9 FWB 64.2ºF / 56.9 FWB
Pre-Cool Coil
Cooling Coil
Re-Heat Coil
Outside Hot & Humid Air
Comfortable Air
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ACT-HP-WAHX Wrap-Around System Typical Air Handler Application
12°F 12°F
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ACT-HP-WAHX Wrap-Around System Installation Configurations
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ACT-HP-WAHX Wrap-Around System Installation Configurations
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AHU Added Performance With ACT ‘s Wrap-Around Heat Pipes
• Typical cooling systems provide sensible and latent cooling.
• Adding WAHX pre-cooling enhances AHU’s ability to reach dewpoint with less energy
• A smaller AHU may be considered.
• Typical systems over cool to drop out moisture and consume higher energy for reheat. WAHX passively re-heat.
• Reduced humidity levels minimize chances for mold, mildew and slip hazards at: healthcare facilities, supermarkets, eateries, libraries, government buildings target. All target 50% humidity.
Latent Cooling,
25%
Sensible Cooling,
75%
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Wrap - Around Heat Pipe System Profile
Saved BTUs
Saved BTUs
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What Effect Does Adding More Rows Have on Installed Performance?
Rows EAT Pre-Cool (F)
LAT Pre-Cool (F)
EAT Re-Heat (F)
LAT Re-Heat (F)
Delta T (F)
Power (BTUH)
Delta P (In H2O)
2 Rows 85.0º 75.0º 50.0º 60.0º 10.0º 10,900 0.14
4 Rows 85.0º 69.5º 50.0º 65.5º 15.5º 16,895 0.27
6 Rows 85.0º 66.0º 50.0º 69.0º 19.0º 20,710 0.41
1000cfm; 480fpm face velocity, ½” Heat Pipes @ 12fpi
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Typical Wrap –Around or Air-to-Air Energy Recovery Coil Width Dimensions
• Two Row Wrap-Around Heat Pipes need approximately 3” of installation width before and after the coiling coil.
• Four Row Wrap-Around Heat Pipes need approximately 5” of installation width before and after the cooling coil.
• Six Row Wrap-Around Heat Pipes need approximately 7” of installation width before and after the coiling coil.
TWO ROW 3”
FOUR ROW
5” SIX ROW
7”
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ACT-WAHX Performance Calculation Increasing Tonnage Performance
25 Tons AHU No WAHX 2R WAHX = 21 Ton AHU 6R WAHX = 18 Ton AHU
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ACT-WAHX Performance Calculation Increasing Dehumidification Performance
25 Tons AHU No WAHX 2R/25 Tons AHU +23%
99.4%
6R/25 Tons AHU +41%
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WAHX Calculation with Engineering Schedule
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WAHX Rows Estimate
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WAHX Pressure Drop = 0.20 inches of water
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WAHX Performance Result
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Typical Quote Response Sheet for a Wrap -Around Dehumidification System
• 1 Day for a budgetary number • 2-3 Days for firm hardcopy quote
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Web Based Wrap-Around Heat Pipe Selection Tool
• Easy Web-Based Selection Tool (no down-loading required)
• Fully selectable data fields for: - Fins per inch - Pressure drop - Outside Air Parameters - Delivered Air Parameters - City/State
• Screen Print Option
• Send Data to Factory Option for Review.
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How to Specify an WRAP – AROUND System
Specification Sheet Front Specification Sheet Back
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CARRIER WRAP-AROUND HEAT PIPE RETROFIT
Added WAHX Coils Modified Drip Pans Modified Filter Racks Modified Side Panel
(bumped out)
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TRANE WRAP-AROUND HEAT PIPE RETROFIT
Added WAHX Coils Modified Drip Pans Modified Filter Racks Slight Modifications to
Side Panels
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Department of Energy Support s ACT Wrap - Around Technology
The US Department of Energy has sighted heat pipes as “Underutilized” and a viable energy saving technology. They have listed the following review of for heat pipe technology performance in general…
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Oxford Journals Support of Passive Heat Pipe Technology
Oxford Journals Report Quote: “The results of the economic analysis are stark and demonstrate that the initial additional cost of the heat pipe is marginal when taking into account the reduced size of other equipment while energy and corresponding cost savings are considerable. An alternative return on investment calculation may be used to demonstrate the savings that would be accrued over a number of years; this would generate figures equally as attractive as those demonstrated in the simple payback analysis.”
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ACT-HP-ERS/A-A Air - to - Air (Heat Pipe)
Heat Exchangers
Air-to-Air Heat Exchangers Are Very GREEN
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ACT - ERS/A-A Air - to - Air (Heat Pipe) Heat Exchangers Captures Building’s Energy for Pre-
Cooling or Pre-Heating in a Counter Flow Design
Sizes can match all existing coils
Typical installations where duct work is side-by-side
No cross contamination of
airstreams ASHRAE Standard 62-2010
ventilation for acceptable indoor air quality.
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Reduces the size of air
conditioning or heating plant
Low Maintenance (no moving parts) No plugging – No Belts – No Bearings
Payback periods between 1-2 years
50% - 80%+ effectiveness
Limited drop in static pressure,
under 0.15 to 0.45 inches of water (2-6 Row AAHX)
ACT - ERS/A-A Air - to - Air (Heat Pipe) Heat Exchangers
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Geometry of the ACT-ERS/A-A can match all existing duct profiles. Energy Recovery does not need to be square.
ACT - ERS/A-A Air - to - Air (Heat Pipe) Heat Exchangers
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Every ACT Air-to -Air Heat Pipe Heat Exchange is designed to yield the optimal effectiveness in Btu/hr. savings. Passive energy recovery transfer is custom engineered to each project to yield the best performance versus cost ratio.
ACT - ERS/A-A Air - to - Air (Heat Pipe) Heat Exchangers
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ACT - ERS/A-A Installation Air - to - Air (Heat Pipe) Heat Exchangers
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Heat Pipe AAHX Selection Example:
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Heat Pipe AAHX Selection Example:
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Control Heat Pipe AAHX Function by Tilting Center Tilting the HP-AAHX will transfer operation from summer to winter
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HP-AAHX Vertical Installation
• Effectiveness: 80% • Btu/hr.: 315,000 • 10 Rows Vertical , 540 Heat Pipes: • Pressure Drop: 1.0
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Typical Quoted Response Sheet for Heat Pipe Heat Exchanger System
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ASHRAE 90.1 Standard Climate Zones
Percentage of Outside Air
Choose Your Zone
Example: Zone 5-A • ≥50% - <60% Outside Air • ≥ 3,500 cfm systems
gain improvements with energy recovery systems
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IECC 2004, ASHRAE 90.1 Commercial State Energy Code Compliance
http://energycodesocean.org/code-status-commercial
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Other Heat Pipe Based Heat Exchangers for
Energy Recovery
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HP-AAHX Passive-Split Air Handling System Energy Recovery can take place summer or winter. A modulating ball valve can trim the amount of cooling or heating from HP coils. No pumps…
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PASSIVE-SPLIT THERMOSYPHON LOOP
HP-AAHX Passive-Split System
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HP-AAHX Passive-Split Air Handling System
VAPOR LINE LIQUID LINE
CONTROL VALVE
ENERGY TRANSFER SUMMER 160,000 Btu/hr 12,000 Btu/hr = 1 Ton 13+ tons saved Design points: 95°F & 75°F
ENERGY TRANSFER WINTER 600,000 Btu/hr Design points: 0°F & 70°F
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SUMMER/WINTER PUMP LOOP SYSTEM
• Summer/Winter Energy Recovery (Pump operates both seasons)
• System can be split between ducts up to 30’+
• Low Pressure System Drop
• Sizes up to 25,000 CFM+
• Positive Recovery Efficiency Ratio (RER)
Recovery Efficiency Ratio (RER): RER = Net conditioning energy recovered Total electric power consumed …where the net space conditioning energy can be either heating, cooling, or a combination thereof and the total electric power consumed includes the power required to move air through both sides of the AAHX.
EVAPORATOR
EVAPORATOR CONDENSOR
CONDENSOR
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Energy Recovery Passive Summer/ Pump Winter System • Summer/Winter
Energy Recovery
• Passive in Summer
• Pump in Winter
• Ducts are side-by-side
• Low Pressure System Drop
• Sizes up to 25,000 CFM+
• Positive Recovery Efficiency Ratio (RER)
PASSIVE SUMMER/ PUMP WINTER
CONDENSOR
EVAPORATOR
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ACT Process Cooling Applications • Large Cooling Radiator for CertainTeed Building Products.
• Continuous operation, 460V ,10HP motor, VFD for fan speed control
• 600,000 BTU/hr. of cooling.
• Cools process water to programmed temperature.
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Industry Application Drivers
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DSIRE: Database of State Incentives for Renewables & Efficiency
DSIRE is the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States
http://dsireusa.org
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Standards Driving and Promoting the Use of Energy Recovery Systems
ASHRAE Building EQ Standard The EQ building energy labeling program provides the general public, building owners and tenants, potential owners and tenants, and building operations and maintenance staff with information on the potential and actual energy use of buildings.
ASHRAE 189.1 Green Building Standard Standard for the Design of High-Performance Green Buildings The energy efficiency goal of Standard 189.1 is to provide significant energy reduction in addition to those introduced under ANSI/ASHRAE/IESNA Standard 90.1-2007. It offers a broader scope than Standard 90.1 and is intended to provide minimum requirements for the siting, design and construction of high performance, green buildings.
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Standards Driving and Promoting the Use of Energy Recovery Systems
LEED Points possible for; Energy and Atmosphere, Indoor Environmental Air Quality, Innovation in Design.
Energy Policy Act of 2005, EPACT2005, Went in to effect on January 1, 2010. The Act contains 1,700 pages of incentives for traditional energy production efficiencies and incentivizes new technologies for energy conservation in the commercial, residential and industrial markets. EPACT2005 Incentives: Agencies may retain utility cost savings and invest them in future energy projects. Additionally, commercial buildings designed to consume 50% less energy than ASHRAE 90.1 receive a $1.80/square foot tax deduction (for federal facilities, the deduction is allocated to the architect(s) and/or engineer(s) responsible for the building’s design).
EPA Sponsored Energy Star Portfolio Manager.
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Standards Driving and Promoting the Use of Energy Recovery Systems
ASHRAE 90.1 2010 Energy Standard for Buildings Except Low-Rise Residential Buildings
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Opportunity: Dedicated Outside Air Systems 4.5 million existing commercial buildings
Types of DOAS facilities that would utilize , or directed by new building codes to install Energy Recovery Systems Facility or Institution Number of Buildings
Airports/Air Transport operations 11,445
Food Stores 171,057
Public Elementary/Secondary Schools 89,508
Private Elementary/Secondary Schools 27,402
Universities, Colleges, Professional Schools 4,064
Hospitals 8,841
Skilled Nursing facilities 15,032
Mental Health Care facilities 3,742
Warehousing operations 580,000
State/Federal Correctional facilities 1,500
Theaters 8,298 Statistics from the Fredonia Group
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``
Wrap up…
Innovations in Action
Mark Stevens, New Business Development Energy Recovery Products [email protected], 717-344-0061 www.1-ACT.com/HVAC
Pete Dussinger, VP, Energy Recovery Products [email protected], 717-295-6052
Contact info: