Evaluation of Subcooling with Liquid-Suction Heat Exchanger on the Performance of Air Conditioning System Using R22/R410A/R290/R32 as Refrigerants

Authors

  • Rachmad Imbang Tritjahjono Department of Mechanical Engineering, Politeknik Negeri Bandung, Gegerkalong Hilir Ciwaruga, Bandung 40012 Indonesia
  • Kasni Sumeru Department of Refrigeration & Air Conditioning, Politeknik Negeri Bandung, Gegerkalong Hilir Ciwaruga, Bandung 40012 Indonesia
  • Andriyanto Setyawan Department of Refrigeration & Air Conditioning, Politeknik Negeri Bandung, Gegerkalong Hilir Ciwaruga, Bandung 40012 Indonesia
  • Mohamad Firdaus Sukri Green and Efficient Energy Technology (GrEET) Research Group, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya,76100 Durian Tunggal, Melaka, Malaysia

Keywords:

air conditioning, cooling capacity, COP improvement, R290, R32

Abstract

This paper presents a numerical study to investigate the effect of subcooling with liquid-suction heat exchanger (LSHX) on the performance of air conditioning system using R22, R410A, R290 and R32 as refrigerants. In the near future, R290 and R32 refrigerants are projected to replace R22 and R410A as working fluids in the residential air conditioning. In this study, four parameters, i.e., the refrigerating effect, compressor work, COP and discharge temperature were investigated. In the numerical modelling, the evaporating and condensing temperatures were assumed constant at 5 oC and 40oC, respectively. The results showed that the COP improvements increased with the increase in the subcooling. R32 and R290 had the lowest and the highest COP improvement when subcooling was applied, i.e., 3.3% and 5.3% for subcooling of 5K and 6.2% and 10.2% for subcooling of 10K, respectively. Due to low global warming potential and almost identical refrigerant properties as compared to R22, system with LSHX and R290 has huge commercial potential as a replacement for conventional system in the future.

Downloads

Published

2020-12-14

How to Cite

Tritjahjono, R. I. ., Sumeru, K. ., Setyawan, A. ., & Sukri, M. F. . (2020). Evaluation of Subcooling with Liquid-Suction Heat Exchanger on the Performance of Air Conditioning System Using R22/R410A/R290/R32 as Refrigerants. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 55(1), 1–11. Retrieved from https://www.akademiabaru.com/submit/index.php/arfmts/article/view/2452

Issue

Section

Articles