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CO2 as a heat pump working fluid for retrofitting hydronic heating systems in Western Europe.

Author(s) : ENKEMANN T., KRUSE H., OOSTENDORP P. A.

Summary

In order to optimize the heat pump performance, a modification of the usual design of the heating system is proposed. The temperature difference between supply and return should be enlarged by reducing the mass flow of the water in the existing hydronic system. Calculations show that this modification would lead to higher COPs at substantial lower high side pressures of the heat pump and substantial lower discharge gas temperatures while the behaviour of the volumetric heating capacity is equal. The estimated seasonal performance factor for the modified system with original design temperatures of 70/50 deg C is 3.2. The document presents the transparencies.

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Details

  • Original title: CO2 as a heat pump working fluid for retrofitting hydronic heating systems in Western Europe.
  • Record ID : 1998-1258
  • Languages: English
  • Source: CO2 Technology in Refrigeration, Heat Pump & Air Conditioning Systems. Workshop Proceedings.
  • Publication date: 1997/05/13
  • Document available for consultation in the library of the IIR headquarters only.

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