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R-134a Heat Pump Application for the Buses by Using Engine Coolant as a Heat Source
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 07, 2008 by SAE International in United States
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This work is based on a premise that a heat pump (HP) can replace a plurality of passenger heaters and an auxiliary heater (fuel fired heater) of the buses. It means that we can take advantages of the design cost, weight, and package efficiency. In addition, the optimized climate control units from integrating cooling and heating into the HP can improve the heating efficiency.
This paper shows a real application of R-134a HP, using engine coolant as a heat source, remodeling a roof mounted air-conditioner (AC). Furthermore, the bench test and the on-vehicle experimental results served to compare the heating performance of HP with conventional heating systems.
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CitationShin, S., Yun, C., Lim, S., Moon, J. et al., "R-134a Heat Pump Application for the Buses by Using Engine Coolant as a Heat Source," SAE Technical Paper 2008-01-2697, 2008, https://doi.org/10.4271/2008-01-2697.
- Scherer Lawrence P. Ghodbane Mahmoud Baker James A. Kadle Prasad S. “On-Vehicle Performance Comparison of an R-152a and R-134a Heat Pump System” SAE Technical Paper No. 2003-01-0733
- John Meyer Yang George Papoulis Evangelos “R134a Heat Pump for Improved Passenger Comfort” SAE Technical Paper No. 2004-01-1379
- Feuerecker Gunther Schafer Bernd Strauss Thomas “Auxiliary Heating Systems of Conventional and Heat Pump Type: Technology, Performance and Efficiency” SAE Technical Paper No. 2005-01-2055