期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 27, 期 5, 页码 475-483出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2004.02.009
关键词
refrigerating system; refrigerant; calculation; thermodynamic cycle; performance; R404A; propane; R22
Due to the ongoing global phase-out of R-22, which is still the most widely used refrigerant around the world, there is a need to replace this refrigerant in many different applications. This paper focuses on a thorough evaluation of the R-22 replacement options for medium-temperature refrigeration applications. It includes a thermodynamic analysis, comparison of heat transfer and pressure drop characteristics, system performance comparisons using a validated detailed system model, safety issues, and determination of the environmental impact of refrigerant selection. Three potential alternatives to the R-22 were studied: two HFCs (404A and R-410A) and one HC (R-290). An HFC refrigerant, R-410A, is shown to be an efficient and environmentally acceptable option to replace R-22 in medium temperature applications. (C) 2004 Elsevier Ltd and IIR. All rights reserved.
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