Exergy efficiency and irreversibility comparison of R22, R134a, R290 and R407C to replace R22 in an air conditioning system

被引：1
作者：
Venkataramana Murthy V. Padmanabhan
Senthil Kumar Palanisamy
机构：
[1] K. S. Rangasamy College of Technology,Department of Mechanical Engineering
[2] K. S. R. College of Engineering,Department of Mechanical Engineering
来源：
Journal of Mechanical Science and Technology | 2013年 / 27卷
关键词：
R22; Propane; R407C; Air conditioner; Ir-reversibility; Exergy efficiency;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This work presents an experimental comparison of exergy efficiency (EE), irreversibility at the process 1–2 (evaporator exit to compressor inlet), 2–3 (compressor inlet to condenser inlet), 3–4 (condenser inlet to expansion valve inlet), 4–5 (expansion valve inlet to evaporator inlet) and 5–1 (evaporator), and coefficient of performance (COP) of R22, and its substitutes R134a, R290 and R407C in vapor compression refrigeration system (VCRS) of an air conditioner. In addition, the effects of air temperature in the freezer with reference to environment states on irreversibility and EE have been investigated. At −18°C air temperature in the freezer, 33°C reference environment state and 42% relative humidity refrigerants R22 and its substitutes R134a, R290 and R407C VCRSs the total irreversibilities are 665.7, 753.5, 582.1 and 677 W, and EEs are 22.9, 14.2, 26.5 and 20.6%, respectively. The refrigerant R290 is the best performer among candidate refrigerants but it suffers from flammability. Thus, R407C can considerably be used to replace R22.
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页码：917 / 926
页数：9
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