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Modeling and optimization for the external heat exchanger of CO2 heat pump applied for electric vehicles.

Number: pap. n. 453

Author(s) : CHEN Y., ZOU H., DONG J., et al.

Summary

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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Pages: 9

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Details

  • 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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