Performance evaluation of an automotive thermoelectric generator with inserted fins or dimpled-surface hot heat exchanger
Performance evaluation of an automotive thermoelectric generator with inserted fins or dimpled-surface hot heat exchanger
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DOI：
10.1016/j.apenergy.2018.02.176
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发表时间：
2018-05
期刊：
影响因子：
11.2
通讯作者：
Yiping Wang;Shuai Li;Xu Xie;Yadong Deng;Liu Xun;C. Su
中科院分区：
文献类型：
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作者：
Yiping Wang;Shuai Li;Xu Xie;Yadong Deng;Liu Xun;C. Su
以蒙狮越野车为研究对象，采用计算流体力学与数学模型相结合的虚拟评价方法，对车载温差发电器（ATEG）的温度分布和最终输出功率进行了计算。通过道路试验验证了虚拟评价方法的准确性和可靠性。道路试验结果表明，该虚拟评价方法对ATEG的性能预测具有较高的准确性，可为ATEG的设计提供有效的指导。此外，酒窝表面被引入到传统的热换热器中的插入翅片，以减少压降，但保持ATEG的热端和冷端之间的温差。计算结果表明，与插入翅片的ATEG相比，凹陷表面的ATEG的压降降低了20.57%，净功率增加了173.60%。
A virtual evaluation method that computational fluid dynamics combines with a mathematical model was proposed to compute the temperature distribution and final power output of an onboard automotive thermoelectric generator (ATEG), which was configured for an off-road vehicle called Mengshi. A road test was conducted to validate the accuracy and reliability of the virtual evaluation method. The output power and voltage of the ATEG in the road test showed that the virtual evaluation method exhibited satisfactory accuracy in predicting the performance of the ATEG and could provide effective guidance for the design of the ATEG. Furthermore, dimpled surfaces were introduced to replace the inserted fins in the conventional hot heat exchanger to reduce the pressure drop but maintain the temperature difference between the hot and cold end of the ATEG. Computational results showed that, compared with the ATEG with inserted fins, the pressure drop in the ATEG with dimpled surface was reduced by 20.57%, and the net power output was increased by 173.60%.