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Indirect refrigeration cycle with heat pump functionality for hybrid and electric vehicles.
Number: pap. 1122
Author(s) : RABL B., STEINER A., WALTENBERGER M., et al.
Summary
The air conditioning system of a passenger car causes significant power consumption. For Hybrid and Electric Vehicles the energy consumption for heating of the cabin at low ambient temperatures in particular plays an important role, considering that there is only little or no waste heat available. Electric (resistance) heating of the cabin air drastically reduces the driving range. Additionally, in case of electric vehicles there may be a demand for cooling of the traction battery at high ambient temperatures. In contrary, the waste heat of the power electronics could be used for cabin heating at low ambient temperatures if its temperature level is raised by means of a heat pump. This manuscript illustrates simulation results as well as test bench measurements of an indirect refrigeration system with heat pump functionality. The proposed system may considerably lower the energy consumption for air conditioning of the passenger cabin and offers ways to incorporate additional heat sinks as well as sources in a simple manner. The system aims for higher efficiencies in heating and dehumidification mode compared to conventional systems and should facilitate the vehicle’s overall thermal management. The natural refrigerant R744 is used as working fluid because of its negligible global warming potential (compared to other refrigerants) and favourable thermodynamic properties for heat pump applications.
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Details
- Original title: Indirect refrigeration cycle with heat pump functionality for hybrid and electric vehicles.
- Record ID : 30019092
- Languages: English
- Source: 12th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2016). Proceedings. Édimbourg, United Kingdom, August 21st-24th 2016.
- Publication date: 2016/08/21
- DOI: http://dx.doi.org/10.18462/iir.gl.2016.1122
Links
- See translations: Ciclo de refrigeración indirecto con funcionalidad de bomba de calor para vehículos híbridos y eléctricos.
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