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Review on development of air source transcritical CO 2 heat pump systems using direct-heated type and recirculating-heated type.

Author(s) : CAO F., SONG Y., LI M.

Type of article: Article, IJR article, Review

Summary

Transcritical CO2 heat pumps have found worldwide applied because of the environmental friendliness and other thermodynamic advantages, however, the inefficiency of the CO2 cycle has been the most is- sue blocking its popularization. This review has reported the recent state-of-the-art for improving per- formances in the Transcritical CO2 heat pumps using both direct-heated type and recirculating-heated type. The features and issues of IHX, multi-compression with flash tank or economizer, ejector, parallel compression, cascade and combined cycles are cited and analyzed, respectively. Besides, variable of op- timization methods and control strategies, especially the extremum seeking control, are referred. After been discussed and compared, the application range of majority modifications and the historical map of the researches are summarized, which aims at providing an overview of the variable requirements in different regions and the most appropriate modifications regarding to variable requirements for scholars, developers, manufacturers and policy makers.

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Format PDF

Pages: 455–475

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Details

  • Original title: Review on development of air source transcritical CO 2 heat pump systems using direct-heated type and recirculating-heated type.
  • Record ID : 30026604
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 104
  • Publication date: 2019/08
  • DOI: http://dx.doi.org/10.1016/j.ijrefrig.2018.12.023

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