@article{article_367419, title={PERFORMANCE ANALYSIS OF R22 AND ITS SUBSTITUTES IN AIR CONDITIONERS}, journal={Journal of Thermal Engineering}, volume={4}, pages={1724–1736}, year={2017}, DOI={10.18186/journal-of-thermal-engineering.367419}, author={Kalla, Seneel}, keywords={Energy,Refrigerant,Cycle-D,Vapour Compression}, abstract={<p class="MsoBodyTextIndent" style="text-indent:0cm;line-height:115%"> <span lang="EN-US">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. <o:p> </o:p> </span> </p> <p class="MsoBodyTextIndent" style="text-indent:0cm;line-height:115%"> <span lang="EN-US">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. <o:p> </o:p> </span> </p> <p> </p> <p class="MsoBodyTextIndent" style="text-indent:0cm;line-height:115%"> <span lang="EN-US">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. <o:p> </o:p> </span> </p>}, number={1}, publisher={Yildiz Technical University}