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has been cited by the following article:

• TITLE: Thermodynamic Simulation of CCP in Air-Cooled Heat Pump Unit with HFCs and CO2 Trans-Critical

  AUTHORS: Feihu Chen, Shuguang Liao, Guangcai Gong

  KEYWORDS: Air-Cooled Heat Pump Unit, Compound Condensation Process (CCP), Exergy Analysis Method, Sanitary Hot Water, MATLAB/SIMULINK Software, Fluorine Substitute Refrigerant R407C/R410A, Natural Refrigerant CO2

  JOURNAL NAME: Journal of Power and Energy Engineering, Vol.6 No.9, September 30, 2018

  ABSTRACT: The exergy analysis and finite time thermodynamic methods had been employed to analyze the compound condensation process (CCP). It was based on the air-cooling heat pump unit. The cooling capacity of the chiller unit is about 1 kW, and the work refrigerant is R22/R407C/R410A/CO2. The MATLAB/SIMULINK software was employed to build the simulation model. The thermodynamic simulation model is significant for the optimization of parameters of the unit, such as condensation and evaporation temperature and mass flow of the sanitary hot water and size of hot water storage tank. The COP of the CCP of R410A system is about 3% - 5% higher than the CCP of the R22 system, while CCP of the R407C system is a little lower than the CCP of R22 system. And the CCP of CO2 trans-critical system has advantage in the hot supply mode. The simulation method provided a theoretical reference for developing the production of CCP with substitute refrigerant R407C/R410A/CO2.