Vol. 1 No. 02 (2020)

Performance Investigation of refrigerant R-407C as a Replacement to refrigerant R22 in Window Air Conditioner Unit

Ibrahim F. Abdulqadir
Department of Energy Engineering, Technical College of Engineering, Duhok Polytechnic University, Iraq
Badran M. Salim
Department of Refrigeration and Air Conditioning, Technical College of Engineering, Northern Polytechnic University, Iraq
Omar Shamdeen
Department of Mechanical Engineering, College of Engineering, University of Zakho, Iraq

Published 2020-12-31


  • Compressor Oil,
  • Refrigeration Effect,
  • COP,
  • Refrigerant,
  • R22

How to Cite

I. F. . Abdulqadir, B. . M. Salim, and O. Shamdeen, “Performance Investigation of refrigerant R-407C as a Replacement to refrigerant R22 in Window Air Conditioner Unit”, JoCEF, vol. 1, no. 02, pp. 37-43, Dec. 2020.


The present work deal with the experimental study to retrofit the refrigerant R407c with the refrigerant R22 in the air conditioning unit at an ambient temperature range between 30-45°C. The main component of the experimental rig includes a window air conditioner with a refrigeration capacity of 2 Ton refrigeration that used refrigerant R22 as a working fluid in the experimental work. The refrigerant R22 is replaced with refrigerant R407C due to similar operation properties for the two refrigerants. The experimental results displayed the refrigeration effect and coefficient of performance COP of the R22 system are high as with those of the R407C system. The falls in the evaporator and condenser for the R407C system is lower than that of the R22 system. The temperature of discharge in the compressor for the system of refrigerant R22 is greater than that of the R407C system. Moreover, condensation temperature along the tube of the condenser is decreased with the increase of the distance for both refrigerants. The refrigerant R407C may be selected as a good alternate for R22 with an agreement difference in the two refrigerants’ performance. The system did not require replacement for any part of the AC unit.


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