Experimental results of transcritical CO2 heat pump for residential application

M.R. Richter, S.M. Song, J.M. Yin, M.H. Kim, C.W. Bullard and P.S. Hrnjak

Energy, 2003, vol. 28, issue 10, 1005-1019

Abstract: This paper describes experiments comparing a commercially available R410A heat pump and prototype R744 (carbon dioxide) system in heating mode. The R744 system utilizes aluminum microchannel heat exchangers and a prototype semi-hermetic compressor. System performance is compared for two configurations: first, when the R744 compressor speed is set to match the baseline system’s heating capacity at 8.2 °C outdoors and 21.1 °C indoors; and second, when the air conditioning capacity is matched at 35 °C outdoors and 26.5 °C indoors. The R744 system operates with a slightly lower heating COP, but its higher capacity at lower outdoor temperatures reduces the need for less efficient supplementary heating capacity.

Date: 2003
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Citations: View citations in EconPapers (11)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:28:y:2003:i:10:p:1005-1019

DOI: 10.1016/S0360-5442(03)00065-3

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