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Comparison of different waste heat utilization methods in heat pump air conditioning system for electric vehicles.

Number: 0316

Author(s) : YU T., LI X., SHI W.

Summary

Range attenuation in winter is a major obstacle to the promotion and application of electric vehicles in cold regions. To improve the heating capacity and reduce the energy consumption of the air conditioning system for electric vehicles, power components waste heat recovery is currently widely used. However, how to utilize waste heat more efficiently based on the waste heat grade has not been investigated previously. In this study, the simulation model of the heat pump system for electric vehicles is established, and the performances of different waste heat utilization methods are compared. The result shows that the high-grade waste heat of the motor should be directly used for secondary heating, and the low-grade waste heat of the battery should be used as the heat source for the heat pump. Besides, improvement measures should be taken to avoid a low battery temperature under low ambient temperature and low waste heat conditions.

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Pages: 9

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Details

  • Original title: Comparison of different waste heat utilization methods in heat pump air conditioning system for electric vehicles.
  • Record ID : 30031394
  • Languages: English
  • Subject: Technology
  • Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
  • Publication date: 2023/08/21
  • DOI: http://dx.doi.org/10.18462/iir.icr.2023.0316

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