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Propane heat pump with low refrigerant charge: design and laboratory tests.

Author(s) : FERNANDO P., PALM B., LUNDQVIST P., et al.

Type of article: Article, IJR article

Summary

Independently of the choice of refrigerant, environmental and or safety issues can be minimized by reducing the amount of refrigerant charge per heat pump or refrigeration system. In the investigation reported here, a laboratory test rig was built, simulating a water-to-water heat pump with a heating capacity of 5 kW. The system was designed to minimize the charge of refrigerant mainly by use of mini-channel aluminium heat exchangers. It was shown that the system could be run with 200 g of propane at typical Swedish operating conditions without reduction of the COP compared to a traditional design. Additional charge reduction is possible by selecting proper compressor lubrication oils or by using a compressor with less lubrication oil.

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Pages: 761-773

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Details

  • Original title: Propane heat pump with low refrigerant charge: design and laboratory tests.
  • Record ID : 2005-0434
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 27 - n. 7
  • Publication date: 2004/11

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