Title: Simulation of air-source heat pump water heater system with two-stage compression cycle
Abstract: To study the impact of operating parameters of two-stage air-source heat pump water heater on its performance and shorten the development cycle unit,a system model of the two-stage compression heat pump water heater was built by the steady-state simulation method,and the model of middle chiller was also built.Using R134a refrigerant,32.7cm3 the for the low pressure stage and 18.3cm3 for the high pressure stage output volumes piston compressor,and finned tube heat exchanger as the evaporator.System COP decreased with the increase of condensation pressure and intermediate pressure,and increased with the evaporation temperature increase.The system power consumption increased with the increase of intermediate pressure.By building the test platform,collecting test data were compared with the simulation results.The simulation result reflected the parameter variation of system operation well and its error range was less than 10%.
Publication Year: 2010
Publication Date: 2010-01-01
Language: en
Type: article
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