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首页> 外文期刊>International Journal of Heat and Mass Transfer >Heat transfer characteristics of the integrated heating system for cabin and battery of an electric vehicle under cold weather conditions
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Heat transfer characteristics of the integrated heating system for cabin and battery of an electric vehicle under cold weather conditions

机译：寒冷天气条件下电动汽车车厢和电池集成供暖系统的传热特性

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摘要

The objective of this study is numerically to investigate the heat transfer characteristics of the integrated heating system considering the temperature of cabin and battery of an electric vehicle under the cold weather conditions. The integrated heating system consists of a burner to combust fuel, an integrated heat exchanger for CHE (coolant heat exchanger) and AHE (air heat exchanger). The heat transfer characteristics like the overall heat exchanger effectiveness, the heat transfer rate, the temperature distribution and the fluid flow characteristics like the pressure drop, velocity distribution of the investigated integrated heating system were considered and analyzed by varying the inlet mass flow rates and the inlet temperatures of the cold air and water, respectively. The average Nusselt numbers for the cold air side and the water side were increased 28.4% and 9.5%, respectively, with the increase of the cold air side Reynolds numbers from 15,677 to 72,664 and the water side Reynolds numbers from 4330 to 11,912. The numerical results showed good agreement within ±9.0% of the existed data and thus confirmed that the present model was valid. In addition, the proposed integrated heating system could be used as the thermal management of the cabin and the battery system of the electric vehicle under the cold weather conditions.
机译：这项研究的目的是在数值上研究考虑到寒冷天气条件下电动汽车的座舱和电池温度的综合供暖系统的传热特性。集成供暖系统由燃烧燃料的燃烧器，用于CHE（冷却剂热交换器）和AHE（空气热交换器）的集成热交换器组成。通过改变入口质量流量和流量来考虑和分析所研究的集成供热系统的传热特性，如总热交换器效率，传热率，温度分布和流体流动特性（如压降，速度分布）。冷空气和水的入口温度分别。冷空气侧和水侧的平均努塞尔数分别增加了28.4％和9.5％，其中冷空气侧雷诺数从15677增加到72664，水侧雷诺数从4330增加到11912。数值结果表明，在现有数据的±9.0％内具有良好的一致性，从而证实了该模型是有效的。另外，所提出的集成加热系统可以用作寒冷天气条件下电动汽车的车厢和电池系统的热管理。

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