Simulation based assessment on representativeness of a new performance rating procedure for cold climate air source heat pumps

Cold climate air-to-air heat pumps (CCHP) offer a strong potential for energy use reductions in Canadian homes. Proper selection of the unit is critical order to take advantage improved efficiency and increased capacity at low ambient temperatures ability modulate meet wide range heating loads. A new performance rating procedure (CSA EXP07) was developed better represent seasonal CCHP systems versus current test procedures that do not always accurately characterize response dynamic loads colder zones, thus resulting inaccurate equipment rating. To validate representativeness quantify over-or underestimation savings using procedures, data-driven model simulated code-compliant single-detached home different regions: Marine, Cold-Humid, Cold-Dry, Very-Cold Subarctic. These models then serve as basis comparing coefficient system, which can be compared newly proposed procedure.