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Performance comparative study of new alternatives to R‐502 inside air/refrigerant enhanced surface tubing
Author(s) -
Sami Samuel M.,
Desjardins Daniel E.
Publication year - 2000
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/(sici)1099-114x(200002)24:2<177::aid-er580>3.0.co;2-a
Subject(s) - refrigerant , thermodynamics , range (aeronautics) , nuclear engineering , materials science , environmental science , analytical chemistry (journal) , chemistry , mechanical engineering , composite material , engineering , chromatography , physics , heat exchanger
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. Copyright © 2000 John Wiley & Sons, Ltd.