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Theoretical analysis of cycling losses in air source heat pump systems.

Number: 0773

Author(s) : QIAO H., LAUGHMAN C. R.

Summary

This paper presents quantitative analyses for the cycling losses of air source heat pump systems from a fundamental perspective. First-principles models are developed to facilitate the exploration of cycling characteristics. In this study, cycling performance of two systems (one with a conventional accumulator and the other one with a regenerative accumulator) is compared with different start-up methods. Numerical simulations show that the cycling losses can be reduced by more than 95% if refrigerant migration is prevented during off-cycle. Meanwhile, it is found that regenerative accumulator can greatly reduce the rise time of heating capacity by more than 75%, resulting in 60% reduction in cycling losses.

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Pages: 11

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Details

  • Original title: Theoretical analysis of cycling losses in air source heat pump systems.
  • Record ID : 30031464
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0773

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