PERFORMANCE ANALYSIS OF R22 AND ITS SUBSTITUTES IN AIR CONDITIONERS

Year 2018, Volume: 4 Issue: 1, 1724 - 1736, 17.12.2017

Seneel Kalla

https://doi.org/10.18186/journal-of-thermal-engineering.367419

Cited By: 3

Abstract

The aim of this paper is to evaluate the performance of refrigerants
R22, R407C, R432A, R438A and NM1 (R32/R125/R600a) in order to find a suitable
alternative refrigerant for HCFC 22.

For this purpose energy as well as exergy analysis has been
performed using NIST Cycle-D program for vapour compression refrigeration cycle
design and TEWI (total equivalent warming impact) has also been computed for
these refrigerants.

From the analysis it is found that the values of COP were nearer to
those of R-22, e.g. at  25, 45 and 55 °C
condensing temperature, COP of R432a is lower than that of R22 by about 5.5%,
4% and 4.38% respectively. The results show that by considering the energetic
efficiency, exergetic efficiency, TEWI and flammability simultaneously, R438A
proves to be a better option to replace R22.

Keywords

Energy, Refrigerant, Cycle-D, Vapour Compression

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