Compressor Calorimeter Test of R-410A Alternative: R-32/134a Mixture Using a Scroll Compressor

Shrestha, Som S¹  Sharma, Vishaldeep¹  Abdelaziz, Omar¹ 

[1] ORNL

关键词: Alternative Refrigerants;    Low GWP;    Compressor;    Calorimeter;    Heat Pump;   

DOI  :  10.2172/1131502
RP-ID  :  ORNL/TM-2013/414
PID  :  OSTI ID: 1131502
Others  :  Other: BT0101000
Others  :  BT0400000
Others  :  CEBT002

美国|英语

来源: SciTech Connect

【 摘 要 】

As a contribution to the AHRI Low-GWP Alternative Refrigerants Evaluation Program (AREP), this study compares the performance of lower-GWP alternative refrigerant R-32 + R-134a mixture, to that of refrigerant R-410A (baseline) in a scroll compressor designed for air-conditioning and heat pump applications. These comparisons were carried out via compressor calorimeter tests performed on a compressor designed for refrigerant R-410A and having a nominal rated capacity of 21,300 Btu/hr. Tests were conducted over a suction dew point temperature range of 10 F to 55 F in 5 F increments and a discharge dew point temperature range of 70 F to 140 F in 10 F increments. All the tests were performed with 20 F superheat, 40 F superheat, and 65 F suction temperature. A liquid subcooling level of 15 F was maintained for all the test conditions. The tests showed that the discharge temperature of the alternative refrigerant was higher than that of R-410A at all test conditions. Also, the energy efficiency ratio (EER) and cooling capacity of compressor using the alternative refrigerant were slightly lower in comparison to that of R-410A.