Modeling and simulation of the transcritical CO2 heat pump system

摘要: In this study, a CO2 transcritical cycle model without imposing any excessive constraints such as fixed discharge pressure and suction is developed. The detailed geometrical variation of the gas cooler evaporator have been taken into account. validated with experimental measurements. Parametric influences on system regard to effect dry bulb temperature, relative humidity, inlet water compressor speed, capillary tube length are reported. COP increases temperature or humidity evaporator. Despite refrigerant mass flowrate may be increased declines considerably it. Increasing speed leads higher heating capacity much lower COP. Unlike those conventional sub-critical refrigerant, does not reveal maximum value against length.