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Experimental investigations on adiabatic capillary tube in a transcritical CO2 heat pump system for simultaneous water cooling and heating.

Author(s) : AGRAWAL N., BHATTACHARYYA S.

Type of article: Article, IJR article

Summary

Experimental studies for a prototype CO2 heat pump system employing a capillary tube as an expansion device for simultaneous water heating and cooling have been presented. System performance is significantly influenced by gas cooler water inlet temperature, whereas the effect of water flow rate on system performance is modest. An optimum charge is also recorded at which the system yields the best COP with a capillary tube. Performance deterioration is more severe at undercharged condition than at overcharged condition. Comparisons of test data with simulated results show that maximum deviation in mass flow rate of refrigerant is plus or minus 10% and the flow characteristics exhibit a reasonably good match with the test data.

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Pages: pp. 476-483

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Details

  • Original title: Experimental investigations on adiabatic capillary tube in a transcritical CO2 heat pump system for simultaneous water cooling and heating.
  • Record ID : 2010-1853
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 2
  • Publication date: 2011/03

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