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Performance analysis of different single stage advanced vapor compression cycles and refrigerants for high temperature heat pumps.

Author(s) : LUO B., ZOU P.

Type of article: Article, IJR article

Summary

High temperature heat pumps can reduce the energy consumption and have huge potential for applications. In order to obtain higher performance and achieve lower cost, single stage high temperature heat pump employing expander (EX), ejector (EE), internal heat exchanger (IHX), oil flooded compression (OFC) or coupled (EXIHX and EEIHX) cycles and various refrigerants are studied in this paper. Simulation results show that the efficient configuration is EX, EXIHX, EE, EEIHX, OFC and IHX in order in term of COP and EEIHX, EE, OFC, EXIHX, IHX, and EX in order in term of specific heating capacity (Qc) respectively. Results also show that R245fa, R600 and R1234ze(Z) have similar performance while the COP of the system with R600a is 4%-14% lower than that with R245fa. Moreover, in term of the Q c , there is an increase of 8%-25%, 18%-56% and 6%-11% respectively for BC configurations employing R60 0, R60 0a and R1234ze(Z) instead of R245fa.

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Pages: 246-258

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Details

  • Original title: Performance analysis of different single stage advanced vapor compression cycles and refrigerants for high temperature heat pumps.
  • Record ID : 30026584
  • 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.2019.05.024

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