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R407C as an alternative to R22 in vapour compression plant: an experimental study
Author(s) -
Greco Adriana,
Mastrullo Rita,
Palombo Adolfo
Publication year - 1997
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(19971010)21:12<1087::aid-er330>3.0.co;2-y
Subject(s) - vapor compression refrigeration , thermodynamics , condensation , evaporation , refrigeration , air conditioning , compression (physics) , condenser (optics) , process engineering , cooling capacity , environmental science , materials science , refrigerant , engineering , gas compressor , physics , light source , optics
The problem of HCFC22 phase‐out in refrigeration plants is analysed. A comparison is performed between R22 and R407C. The latter seems a promising drop‐in substitute. Indeed, its use in existing plants would only require discharge of mineral oil and refilling with a compatible polyolester oil. The experimental tests are performed in a plant consisting in a water‐cooled vapor‐compression circuit employed for cooling a water–glycol mixture in a closed‐loop system. Both the thermodynamic properties and general performance of R407C are comparable with those of R22. The COP, however, is 5–17% lower. As a consequence, in order to provide the same refrigerating load, a plant working with R407C requires higher electric‐power consumption. The operational behaviour of R407C is increasingly better with increasing condensation and evaporation temperature. Therefore, R407C is a good R22 substitute in all applications requiring high evaporation temperatures, such as air‐conditioning plants. © 1997 John Wiley & Sons, Ltd.