Compressor Calorimeter Test of R-410A Alternatives R-32, DR-5, and L-41a

Shrestha, Som S ; Mahderekal, Isaac ; Sharma, Vishaldeep ; Abdelaziz, Omar

Oak Ridge National Laboratory

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

DOI  :  10.2172/1089800
RP-ID  :  ORNL/TM-2013/292
RP-ID  :  DE-AC05-00OR22725
RP-ID  :  1089800

美国|英语

来源: UNT Digital Library

【 摘 要 】

As a contribution to the AHRI Low-GWP Alternative Refrigerants Evaluation Program (AREP), this study compares performance of alternative refrigerants R32, DR-5, and L-41A to that of refrigerant R-410A (baseline) in a scroll compressor designed for air-conditioning and heat pump applications. Compressor calorimeter tests were performed to evaluate the performance of the lower-GWP alternative refrigerants in place of the common refrigerant R-410A in a 36,000 Btu/hr compressor calorimeter using a compressor 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 performance of these three lower-GWP alternative refrigerants is comparable to that of R-410A. For the 20 F superheat and 15 F subcooling test conditions, EERs of R32, DR-5, and L-41A were 90% to 99%, 96% to 99%, and 94% to 101%, respectively, compared to that of R-410A. Similarly, cooling capacities of R32, DR-5, and L-41A were 98% to 103%, 92% to 96%, and 84% to 92%, respectively, compared to that of R-410A.