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Heating performance enhancement of a CO2 heat pump system recovering stack exhaust thermal energy in fuel cell vehicles.
Author(s) : KIM S. C., KIM M. S., HWANG I. C., et al.
Type of article: Article, IJR article
Summary
A CO2 heat pump system using recovered heat from the stack coolant was provided for use in fuel cell vehicles, where the high temperature heat source like in internal combustion engine vehicles is not available. The refrigerant loop consists of an electric drive compressor, a cabin heater, an outdoor evaporator, an internal heat exchanger, an expansion valve and an accumulator. The performance characteristics of the heat pump system were investigated and analyzed by experiments. The results of heating experiments were discussed for the purpose of the development and efficiency improvement of a CO2 heat pump system, when recovering stack exhaust heat in fuel cell vehicles. A heater core using stack coolant was placed upstream of a cabin heater to preheat incoming air to the cabin heater. The performance of the heat pump system with heater core was compared with that of the conventional heating system with heater core and that of the heat pump system without heater core, and the heat pump system with heater core showed the best performance of the selected heating systems. Furthermore, the coolant to air heat pump system with heater core showed a significantly better performance than the air to air heat pump system with heater core.
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Details
- Original title: Heating performance enhancement of a CO2 heat pump system recovering stack exhaust thermal energy in fuel cell vehicles.
- Record ID : 2007-2800
- Languages: English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 7
- Publication date: 2007/11
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Indexing
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Themes:
Other heat-pump applications;
CO2 - Keywords: Enhancement; Car; Heat transfer; Heat pump; Fuel cell; Performance; Transcritical cycle; CO2
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Performance evaluation of a CO2 heat pump syste...
- Author(s) : KIM S. C., KIM M. S., HWANG I. C., et al.
- Date : 2007/11
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 7
- Formats : PDF
View record
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Performance evaluation of a stack cooling syste...
- Author(s) : KIM S. C., WON J. P., PARK Y. S., et al.
- Date : 2009/01
- Languages : English
- Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 32 - n. 1
- Formats : PDF
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The heating performance of a CO2 heat pump wate...
- Author(s) : BAEK C., LEE E., KANG H., et al.
- Date : 2009/05/20
- Languages : English
- Source: ACRA-2009. The proceedings of the 4th Asian conference on refrigeration and air conditioning: May 20-22, 2009, Taipei, R.O.C.
- Formats : PDF
View record
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Evaluation of the efficiency of a CO2 heat pump...
- Author(s) : SAIKAWA M., HASHIMOTO K.
- Date : 2001
- Languages : Japanese
- Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 18 - n. 3
View record
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The influence of the characteristics of the CO2...
- Author(s) : MA Y., LI M., WANG J., et al.
- Date : 2002/09/17
- Languages : English
- Formats : PDF
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