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http://dx.doi.org/10.6110/KJACR.2014.26.11.547

An Experimental Study on the Performance Improvement of an R32 Inverter Heat Pump System  

Park, Yun Ki (SAC R&D Laboratory, LG Electronics)
Ha, Man Yeoung (Department of Mechanical Engineering, Pusan National University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.26, no.11, 2014 , pp. 547-552 More about this Journal
Abstract
As global warming in recent years has raised ever more critical concern, refrigerants with high global warming potentials (GWP) are facing the challenge of being phased out. R410A, with a GWP of 2,088, has been widely used in residential air-conditioning and heat pump systems. A potential substitute for R410A is R32, which has a GWP of 675. The present study presents experimental results of an inverter heat pump system that uses R32 as an alternative refrigerant to R410A. Drop-in tests with R32 indicated that the energy efficiency ratio of the system increased by 5.3% in cooling standard mode, and by 4.2% in heating standard mode at the same capacity; and that the cooling and heating capacity increased by about 12% at the same compressor operating frequency, while the annual performance factor (APF) of the system increased by 5.3%.
Keywords
Air-conditioner; Heat pump; R32 refrigerant; Condenser; Evaporator; Compressor; COP;
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