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An Experimental Study on the Energy Use during a TES-Based Reverse Cycle Defrosting Method for Cascade Air Source Heat Pumps

  • Minglu QuEmail author
  • Tongyao Zhang
  • Rao Zhang
  • Jianbo Chen
  • Zhao Li
  • Tianrui Li
Conference paper
  • 202 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

Adopting cascade air source heat pumps (CASHPs) is a possible way to widespread application of air source heat pumps in cold area. When CASHPs are operated in winter, frosting/defrosting may become problematic. Thermal energy storage-based reverse cycle defrosting (TES-based RCD) method for CASHPs has been developed to provide heat to defrosting and continuously heat indoor space. In this paper, the energy use during the TES-based RCD for CASHPs was experimentally studied. It was found that most of the heat supplied was dissipating to the ambient air, accounting for 44.3%, and the defrosting efficiency was 30.2%. Meanwhile, most of the heat came from the TES-heat exchanger (TES-HE), accounting for 40%. This study can be utilized to guide the design optimization for the TES-HE and promote energy-saving for TES-based RCD method.

Keywords

Defrosting Energy use Thermal energy storage Cascade air source heat pump 

Notes

Acknowledgements

Funding for this research was supported by The National Natural Science Foundation of China (Project No.: 51406119).

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  1. 1.School of Environment and ArchitectureUniversity of Shanghai for Science and TechnologyShanghaiChina

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