Studying the impact factors influencing variable-capacity heat pump energy performance through simulation

Cold-climate variable-capacity air-to-air heat pumps (VCHPs) have the potential to significantly reduce energy use in Canadian residential sector. However, optimizing their integration climate can be a challenge, with efficiency and operating behaviour heavily dependent on ambient conditions, building thermal loads, modulating capability units’ individual performance characteristics. Better understanding how these factors influence lead improved system selection, ensure that high space heating systems contribute towards meeting Canada’s emission reduction targets. This study outlines three major – characteristics (cold capacity, part load performance), modulation ratio sizing related VCHP examines relative impact annual using simulation-based approach.