Experimental study of R454B drop-in performance in a R410A liquid-to-water heat pump

摘要

R410A is a widely used refrigerant in residential heat pumps. The Global Warming Potential(GWP) of refrigerant R410A is 1924 so lower GWP alternatives are being studied in the last yearsas potential replacements of R410A. One potential alternative is refrigerant R454B with a GWPequal to 466.This paper presents an experimental study of the R454B drop-in performance in a R410A liquid-towaterheat pump. The main components of the heat pump are a scroll type compressor, twobrazed plate heat exchangers (condenser and evaporator) and an electronic expansion valve.Experimental results for typical operating conditions of liquid-to-water heat pumps (EN 14511-2,2013) are presented and discussed. From the experimental measurements, parameters such asthe COP, heating power or compressor electric power consumption are obtained and comparedbetween the two refrigerants. Results show that R454B might be an adequate drop-in refrigerantfor R410A as it closely matches its performance.