✦ LIBER ✦

Performance comparative study of new alternatives to R-502 inside air/refrigerant enhanced surface tubing

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

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 123 KB
Volume: 24
Category: Article
ISSN: 0363-907X
DOI: 10.1002/(sici)1099-114x(200002)24:2<177::aid-er580>3.0.co;2-a

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✦ Synopsis

In this paper the test results of a performance evaluation of new alternatives; R-407B, R-507, R-408A and R-404A as substitutes to CFC-502 are presented. The test results were obtained using an air-source heat pump with enhanced surface tubing under standard ARI conditions.

The data demonstrated that, as an interim replacement, R-408A blend has a superior performance among the proposed blends including R-502, in the range investigated. Furthermore, the alternatives to R-502 are characterised by high discharge pressure compared to R-502. In particular, R-407B and R-408A have higher discharge temperatures compared to R-502.

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