Abstract
In the paper, water loop heat pump and air-cooled heat pump were taken as research object to study the effect of part-load ratio on running energy consumption in cold regions. The part-load ratio were respectively 100%, 80%,60%,40% and 20%. The test data was analyzed by dimensionless energy consumption analysis method. And the results showed that, effect of part-load impact on water loop heat pump was larger than air-cooled heat pump, especially in Winter. Energy consumption of air-cooled heat pump had linear relationship with part-load ratio, However, it's not suitable for water loop heat pump. Distortion operating point of water loop heat pump was in 80%-100% range of load.
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