Study on performance of air source heat pump water heater/chiller unit under frosting

Yang Yao, Yiqiang Jiang, Zuiliang Ma, Shiming Deng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Air source heat pump water heater/chiller units are increasingly popular in recent decades. However, the investigation of its operating performance under frosting available in open literature is very little. In the paper, the dynamic mathematical model of ASHPWHC unit under frosting was developed. It consists of a compressor sub-model, as well as sub-models of airside heat exchanger under frosting, waterside heat exchanger, and expansion valve. The performance of ASHPWHC unit under frosting, such as airflow rate, air pressure drop and amount of heating, etc. vs. time, under different ambient condition, were evaluated by using the model. The results will provide basis to take effective measures for defrosting control, thus increasing energy efficiency and protecting environment.
Original languageEnglish
Title of host publicationEnergy and the Environment - Proceedings of the International Conference on Energy and the Environment
Pages1563-1567
Number of pages5
Volume2
Publication statusPublished - 1 Dec 2003
EventEnergy and the Environment - Proceedings of the International Conference on Energy and the Environment - Shanghai, China
Duration: 1 Dec 20031 Dec 2003

Conference

ConferenceEnergy and the Environment - Proceedings of the International Conference on Energy and the Environment
Country/TerritoryChina
CityShanghai
Period1/12/031/12/03

Keywords

  • Air source heat pump water heater/chiller
  • Frosting
  • Performance

ASJC Scopus subject areas

  • Engineering(all)

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