Experimental Study of R32 as a Retrofit for R410A Refrigerant in a Residential Air Conditioner

DOI

10.2991/aer.k.201221.029How to use a DOI?

Keywords

Air conditioning, retrofit, performance, refrigerant R410A, R32

Abstract

This study evaluates the performance of a residential air conditioner (A/C) using R32 as a retrofit for R410A. One of the biggest challenges in the retrofitting is to determine the ideal mass of refrigerant, which eventually lead to optimum performance of the system. The theoretical mass of refrigerant charging in this retrofitting analysis was determined using the density ratio of alternative (R32) to the existing (R410A) refrigerants. To achieve the optimum performance, the mass of refrigerant charging was varied between 90, 95, 100 and 105% from the theoretical mass of refrigerant charging. The experiments were carried out using a 2.5 kW split type A/C. The results show that the replacement of R410A with R32 decreases the COP at all refrigerants charging. The highest COP of A/C with R32 was achieved during mass of refrigerant charging of 95%. In this condition, the COP only decreased by 5.1%. The decrement in COP is caused by an increase in input power of the A/C. Consequently, it is not recommended replacing R410A with R32 in the A/Cs that originally is designed for R410A.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Tandi Sutandi
AU  - Ade Suryatman Margana
AU  - Kasni Sumeru
AU  - Mohamad Firdaus Sukri
PY  - 2020
DA  - 2020/12/22
TI  - Experimental Study of R32 as a Retrofit for R410A Refrigerant in a Residential Air Conditioner
BT  - Proceedings of the International Seminar of Science and Applied Technology (ISSAT 2020)
PB  - Atlantis Press
SP  - 167
EP  - 170
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201221.029
DO  - 10.2991/aer.k.201221.029
ID  - Sutandi2020
ER  -