전기 히트펌프 시스템의 운전조건에 따른 냉방 에너지 소비량에 관한 실험적 연구
Experimental Study on the Cooling Energy Consumption According to Operation Condition of the Electric Heat Pump System
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The study aim was to derive optimal operating conditions by considering the initial indoor load and energy efficiency of an electric heat pump (EHP) system. In this study, the set temperature and supply air volume were classified by case, and a comparative analysis was conducted after calculating the cooling capacity, recommended temperature arrival time, power consumption, energy consumption, and Coefficient of Performance (COP) under different operating conditions. An experiment was conducted in which the target space was selected and a sensor was used to measure the indoor temperature. Further, a hot wire anemometer was installed at the inlet of the evaporator outlet to measure the discharge wind speed. To measure the refrigerant temperature change, thermocouples were attached to the inlet and outlet pipes of the evaporator and condenser. The study findings revealed that operating the EHP system by setting the temperature low and supply air volume large until the recommended temperature was reached was the driving method that quickly eliminated the initial indoor load and consumed the least energy.
Abstract
The study aim was to derive optimal operating conditions by considering the initial indoor load and energy efficiency of an electric heat pump (EHP) system. In this study, the set temperature and supply air volume were classified by case, and a comparative analysis was conducted after calculating the cooling capacity, recommended temperature arrival time, power consumption, energy consumption, and Coefficient of Performance (COP) under different operating conditions. An experiment was conducted in which the target space was selected and a sensor was used to measure the indoor temperature. Further, a hot wire anemometer was installed at the inlet of the evaporator outlet to measure the discharge wind speed. To measure the refrigerant temperature change, thermocouples were attached to the inlet and outlet pipes of the evaporator and condenser. The study findings revealed that operating the EHP system by setting the temperature low and supply air volume large until the recommended temperature was reached was the driving method that quickly eliminated the initial indoor load and consumed the least energy.