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Large heat pumps using CO2 refrigerant.

Author(s) : LORENTZEN G.

Summary

The purpose of the paper is to present an approach to the use of CO2 to fit the requirements of large heat pumps. Making use of the special properties of CO2 in transcritical operation, it is possible to achieve a nearly ideal fit to the gliding temperature, which is required in such applications as large district heating schemes. The high pressure differential and relatively small flash gas volume open the possibility of efficient recovery of the expansion exergy in a compact expander. By taking advantage of these qualities it is possible to design large heat pumps with the following merits: completely safe and environmentally compatible refrigerant; superior performance, about 20% higher COP than conventional CFC systems; compact and cost effective components.

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Pages: 1993-2

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Details

  • Original title: Large heat pumps using CO2 refrigerant.
  • Record ID : 1994-0498
  • Languages: English
  • Subject: Figures, economy, Environment
  • Source: Energy Efficiency in Refrigeration and Global Warming Impact.
  • Publication date: 1993/05/12
  • Document available for consultation in the library of the IIR headquarters only.

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