Fundamental Aspects of the Application of Carbon Dioxide in Comfort Cooling

Published

August 1, 2003

Author(s)

J S. Brown, Piotr A. Domanski

Abstract

This paper presents entropy generation analyses for the evaporator, compressor, gas cooler, expansion device and liquid-line suction-line heat exchanger for a transcritical carbon dioxide cycle for automotive and residential air-conditioning systems, and presents entropy generation analyses for the evaporator, compressor, condenser, and expansion device for a subcritical R134a automotive air-conditioning system and a subcritical R22 residential air-conditioning system. The analyses show that the CO2 automotive air-conditioning system generates 36 % more entropy than the R134a automotive air-conditioning system, and that the CO2 residential air-conditioning system generates 63 % more entropy than the R22 residential air-conditioning system. The biggest contributors to the lower CO2 performance are the heat rejection process and the expansion related processes.

Proceedings Title

International Congress of Refrigeration | 21st | A New Old Refrigerant: Carbon Dioxide: Components and Systems I | |

Conference Dates

August 17-22, 2003

Conference Location

Undefined

Conference Title

International Congress of Refrigeration

Pub Type

Conferences

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Keywords

air conditioning, Carbon Dioxide, Confort Cooling, entropy generation, residential, transcritical CO2 cycle

Citation

Brown, J. and Domanski, P. (2003), Fundamental Aspects of the Application of Carbon Dioxide in Comfort Cooling, International Congress of Refrigeration | 21st | A New Old Refrigerant: Carbon Dioxide: Components and Systems I | |, Undefined, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860907 (Accessed October 14, 2025)