Experimental Study on Characteristics of Energy Storage Defrosting and Conventional Defrosting for Cascade Air Source Heat Pump

Qu Minglu; Li Tianrui; Fan Yanan; Wang Tan

doi:10.3969/j.issn.0253-4339.2017.01.034

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Experimental Study on Characteristics of Energy Storage Defrosting and Conventional Defrosting for Cascade Air Source Heat Pump

更新时间：2024-07-18

- Experimental Study on Characteristics of Energy Storage Defrosting and Conventional Defrosting for Cascade Air Source Heat Pump
- Journal of Refrigeration Vol. 38, Issue 1, (2017)
- 作者机构：
  
  上海理工大学环境与建筑学院
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2017.01.034
  CLC：
- Published：2017
- 稿件说明：
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Qu Minglu, Li Tianrui, Fan Yanan, et al. Experimental Study on Characteristics of Energy Storage Defrosting and Conventional Defrosting for Cascade Air Source Heat Pump[J]. Journal of refrigeration, 2017, 38(1).
DOI：

Qu Minglu, Li Tianrui, Fan Yanan, et al. Experimental Study on Characteristics of Energy Storage Defrosting and Conventional Defrosting for Cascade Air Source Heat Pump[J]. Journal of refrigeration, 2017, 38(1). DOI： 10.3969/j.issn.0253-4339.2017.01.034.

摘要

针对复叠式空气源热泵在冬季寒冷地区供热运行中遇到的结霜和除霜问题，本文提出增设蓄热器的蓄能复叠式空气源热泵除霜系统，通过实验研究了该系统间断制热蓄能除霜及不间断制热蓄能除霜两种除霜模式下的除霜特性，并与常规复叠式空气源热泵采用的低温级热气旁通除霜方式进行对比分析。结果表明：采用蓄能除霜方法的除霜时间较旁通除霜减少71.4%~77.6%，系统除霜能耗降低65.1%~85.2%，机组除霜运行更稳定、可靠。

Abstract

Based on the frosting and defrosting problems of cascade air source heat pumps (CASHPs) during heating operation in the cold area in winter

a novel thermal energy storage CASHP defrosting system with a thermal accumulator is proposed. The defrosting performances of thermal energy storage defrosting mode with intermittent heating and continuous heating were experimentally studied

and then the experimental results were compared with common used hot-gas bypass defrosting mode. It was found that in energy storage defrosting mode

the defrosting duration time and the energy consumption were reduced by 71.4%~77.6% and 65.1%~85.2% respectively compared with hot-gas bypass defrosting mode

and the system defrosting operation was more stable and reliable.

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Related Author

Qu Minglu

Fan Yanan

Li Tianrui

Wang Tan

Qu Minglu

Zhang Rao

Zhang Tongyao

Li Tianrui

Related Institution

School of Environment &Architecture, University of Shanghai for Science & Technology

School of Environment and Architecture, University of Shanghai for Science and Technology

Key Laboratory of Enhanced Heat Transfer and Energy Conservation，Ministry of Education , Department of New Energy Science and Engineering，Beijing University of Technology

Tianjin Key Laboratory of Refrigeration Technology，Tianjin University of Commerce

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