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The development of a heat pump water heater system with a carbon dioxide hermetic swing rotary compressor.

[In Japanese. / En japonais.]

Author(s) : UCHIDA M., KURODA M.

Type of article: Article

Summary

A heat pump water heater system using carbon dioxide as a refrigerant can supply high-temperature water efficiently. Carbon dioxide is a natural working fluid without flammability, toxicity or an environmental impact. On the other hand, carbon dioxide is a refrigerant which has a high operating pressure and density. The authors chose a swing rotary compressor as the solution. Noise is an important issue in a system operating at at night-time. The authors developed a new compact heat exchanger and a new fan for suitable operation. As a result, they developed a new heat pump water heater system with 4.02 COP and a 38 dB operating noise level.

Details

  • Original title: [In Japanese. / En japonais.]
  • Record ID : 2005-0121
  • Languages: Japanese
  • Source: Refrigeration - vol. 79 - n. 917
  • Publication date: 2004

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