한국기계기술학회지 제24권 제5호 (p.793-803)

멀티 히트펌프의 정상상태 냉방운전 특성에 대한 실험연구

Experimental Study on Steady-State Cooling Operation Characteristics of Multi-Heat Pump
키워드 :
Compressor pressure(압축기 압력),Cooling performance(냉방성능),COP(성능계수),Frequency(주파수),Multi-heat pump(멀티 히트펌프)

초록

In the present study, to investigate the cooling characteristics of the multi-heat pump with 3 indoor units, 7 indoor unit combinations and 3 setting temperatures are selected to study the cooling characteristics during steady-state operation. The cooling capacity, power consumption, COP, compressor high and low pressure of the heat pump are tested under the cooling standard temperature conditions using an air enthalpy multi-calorimeter. The experimental results show that, except for an operation with an indoor unit capacity of 30% or less, the cooling capacity, power consumption, and compressor operation frequency increase as the capacity of the indoor unit increases and the setting temperature of the indoor unit decreases. COP increases or decreases according to the compressor frequency, and is the best at 50-80% capacity of the indoor unit. As the compressor frequency increases, the compressor outlet pressure increases by about 30%.