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Fundamental Aspects of the Application of Carbon Dioxide in Comfort Cooling.
| 题名： | Fundamental Aspects of the Application of Carbon Dioxide in Comfort Cooling. |
| 作者： | Brown-J.S.; Domanski-P.A. |
| 关键词： | *Carbon-dioxide; *Air-conditioning-systems; *Cooling-; *Residential-buildings; *Automotive-industry.;Evaporators-; Compressors-; Heat-exchangers; Entropy-; Refrigeration-; Performance-. |
| 摘要： | 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 airconditioning 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 irreversibilities associated with the heat rejection process and the expansion related processes. |
| 报告类型： | 科技报告 |
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