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Steady-state numerical simulation of a vapor compression heat pump system as an effective method to predict its performance.

Number: pap. 2052

Author(s) : JANKOVIC Z., SIERRES ATIENZA J., CERDEIRA PÉREZ F., et al.

Summary

During the last few decades a strong driving force has been directed to the development of simulation models and methodologies for vapor compression systems and its main components. These models are highly useful as an effective method to predict the system performance and the thermodynamic processes of the vapor compression system under different operating conditions or different component’s properties, as well as refrigerant replacements. This paper presents the mathematical model of a heat pump and numerical steady-state simulations with refrigerant R407C compared to experimental data. Using the information from manufacturer’s data and real properties of scroll compressor, brazed plate heat exchangers and additionally built-in liquid-vapor heat exchanger, the mathematical model of the thermodynamic and heat transfer process in its different components is developed in order to predict the operating conditions of the heat pump. With numerical simulations the effect of: the liquid-vapor heat exchanger; evaporator, condenser and desuperheater constructive properties; different temperatures of the external fluids at condenser’s and evaporator’s inlets; the effect of degree of superheat and degree of subcooling, as well as refrigerant replacement are analyzed. The final goal is to predict the thermodynamic states, pressure drops, heat transfer rates and system performance of the heat pump and to identify the heat pump configuration which will result in the most adequate operating conditions.

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Pages: 10

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Details

  • Original title: Steady-state numerical simulation of a vapor compression heat pump system as an effective method to predict its performance.
  • Record ID : 30018906
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

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