Heating performance characteristics of a dual source heat pump using air and waste heat in electric vehicles

Jae Hwan Ahn, Hoon Kang, Ho Seong Lee, Hae Won Jung, Changhyun Baek, Yongchan Kim

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

A heat pump has been considered as an alternative to an electric heater to increase the efficiency of the heating unit in electric vehicles. However, the heating performance of a single source heat pump has yet to be improved at low outdoor temperatures. This study investigates the feasibility of a dual source heat pump using both air and waste heat in electric vehicles. The performance of the dual source heat pump was measured at various operation modes: air source-only, waste heat-only and dual heat source. The heating performance of the dual source heat pump was higher than those of the single source heat pumps. In addition, an alternating single mode operation of air source-only and waste heat-only modes was proposed to improve performance at low outdoor air temperatures.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalApplied Energy
Volume119
DOIs
Publication statusPublished - 2014 Apr 15

Keywords

  • Automobile
  • Heat pump
  • Performance
  • R134a
  • Waste heat

ASJC Scopus subject areas

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

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