Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Study on the Performance Characteristics of a Heat Pump System using Stack Wast Heat in Fuel Cell Vehicles

스택 폐열을 이용한 연료전지 자동차용 열펌프 시스템의 성능 특성에 관한 연구

  • Jeon, Byungyong (Department of Mechanical Engineering, Graduate School of Jeju National University) ;
  • Ko, Wonbin (Department of Mechanical Engineering, Graduate School of Jeju National University) ;
  • Park, Youn Cheol (Department of Mechanical Engineering, Jeju National University)
  • 전병용 (제주대학교 대학원 기계공학과) ;
  • 고원빈 (제주대학교 대학원 기계공학과) ;
  • 박윤철 (제주대학교 기계공학과)
  • Received : 2016.03.21
  • Accepted : 2016.06.25
  • Published : 2016.08.10
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Abstract

This study was conducted to develop a heating system for a fuel cell-driven electric vehicle. The system consists of a compressor, an expansion device and three heat exchangers. A conventional air source heat exchanger is used as primary heat exchanger of the system, and an additional water source heat exchanger is used as a pre-heater to supply heat to the upstream air of the primary heat exchanger. On the other hand, the third heat exchanger consists of a water-to-refrigerant heat exchanger. The heat source of the pre-heater and the water-refrigerant heat exchanger is the waste heat from the fuel cell's stack. In the experiment, the indoor and the outdoor air temperature were fixed, and the compressor speed, EEV opening and waste heat temperature were varied. The results indicate that the $COP_h$ of the proposed system is 3.01 when the system is operating at a 1,200 rpm compressor speed, 50% EEV opening, and $50^{\circ}C$ waste heat source temperature in air pre-heater operation. However, when the system uses a water-refrigerant heat exchanger, the $COP_h$ increases to up to 9.42 at the same compressor speed and waste heat source temperature with 75% EEV openings.

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References

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