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 language | English |
|---|---|
| Pages (from-to) | 1-9 |
| Number of pages | 9 |
| Journal | Applied Energy |
| Volume | 119 |
| DOIs | |
| Publication status | Published - 2014 Apr 15 |
Keywords
- Automobile
- Heat pump
- Performance
- R134a
- Waste heat
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering
- Energy(all)
- Management, Monitoring, Policy and Law