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CO2 heat pump is a promising system for electric vehicles to improve its heating performance in cold region. The external heat exchanger is a key component acting as evaporator on heating mode and gas cooler on cooling mode, respectively. In this paper, the simulation model of a kind of micro-channel heat exchanger for CO2 heat pump is setup and validated. The maximum errors of heat capacity and refrigerant-side pressure drop between the simulated results and experimental results are within 8.5% and 11.6%, respectively. Based on the simulation model, the performance of this heat exchanger with different structure layout is analyzed under different working conditions. Accordingly, an optimized structure of the micro-channel heat exchanger for CO2 heat pump is presented to get the optimal performance in electric vehicles.
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- Original title: Modeling and optimization for the external heat exchanger of CO2 heat pump applied for electric vehicles.
- Record ID : 30026447
- Languages: English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Publication date: 2019/08/24
- DOI: http://dx.doi.org/10.18462/iir.icr.2019.0453
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Indexing
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- Source: Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
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