✦ LIBER ✦

Performance analysis of new alternatives to HCFC-22 inside air/refrigerant-enhanced surface tubing

✍ Scribed by Samuel M. Sami; Daniel E. Desjardins

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 126 KB
Volume: 24
Category: Article
ISSN: 0363-907X
DOI: 10.1002/1099-114x(200007)24:9<759::aid-er622>3.0.co;2-k

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✦ Synopsis

In this paper, the test results of a performance analysis of new alternatives; R-410A, R-507, R-407C, R-408A and R-404A proposed as substitutes to HCFC-22 are presented. The test results were obtained using an air-source heat pump with enhanced surface tubing. Performance tests were conducted according to the ARI/ASHRAE Standards.

The performance data demonstrated that as an interim replacement, the R-404A blend has a superior performance particularly at low temperatures among the proposed blends. Furthermore, the alternatives to R-22 are characterised by high discharge pressure compared to that of R-22. In particular, R-410A has the highest discharge pressure among the blend studied. R-407C has similar discharge temperature to R-22 at temperatures lower than !83C.

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