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The experimental study of a commercial air source CO2 heat pump hot water system.

Number: pap. D1-036

Author(s) : WANG S., MENG T., CAO F., et al.

Summary

Based on the thermodynamic characteristic of transcritical CO2, compared to conventional refrigerants, the CO2 heat pump water heater can still maintain a relatively high value of the COP when it produces hot water with temperatures up to 95°C without operational problems, however, the optimization of the system must be necessary. In this paper, the authors present the experiment exploration and study about system optimization of a commercial air source CO2 heat pump hot water system (heat production more than 50 kW), analyze the factors resulting in heating COP decline as the outlet water temperature increases, and give some way to improve heating COP. Meanwhile, utilizing the data of performance experiments at different outlet water temperature (55~80?) and ambient temperature (-15~35?), the authors fitted the optimal pressure equation to control the heat pump hot water in optimal operating condition.

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Pages: 9 p.

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Details

  • Original title: The experimental study of a commercial air source CO2 heat pump hot water system.
  • Record ID : 30005391
  • Languages: English
  • Source: ACRA2010. Asian conference on refrigeration and air conditioning: Tokyo, Japan, June 7-9, 2010.
  • Publication date: 2010/06/07

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