Heat Powered AC Compressor for Micro CHP

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Heat Powered A/C Compressor for Micro-Combined
Heat Power (CHP) Systems
by Paul D. Freen, Etatech, Inc. November 14,
2003
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Features of Heat Powered A/C Compressor for
Micro-CHP Systems

• Single Effect Absorption Cycle
• Excellent A/C System Coefficient of Performance
  (0.6 to 0.7)
• Replaces Conventional A/C Compressor (R-22 or
  R134a Refrigerants) With Waste Heat Powered
  Compressor
• Air Cooled Absorber
• Low Hot Side Temperature (220 deg F)

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Economics of Heat Powered A/C Compressor for
Micro-CHP Systems

• Low Initial Cost. 500/ton (3 ton unit)
• Fast Payback on Investment (1.5 yrs)
• Fast and Easy Retrofit of Existing A/C Compressor
• Modular for CHP Flexibility. Easily Adapts to
  Existing A/C Systems
• Added Reliability Since Existing Electric
  Compressor Can Be Used as Backup

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Conventional Vapor Compression Cycle Refrigeration
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Single Effect Absorption Cycle Refrigeration
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Flash points above 300F