An experimental and Comparative performance of a thermal electric generator system using different heat exchanger fluids

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL International Journal of Heat and Fluid Flow Pub Date : 2025-03-01 Epub Date: 2024-12-26 DOI:10.1016/j.ijheatfluidflow.2024.109732

Vinh Nguyen Duy , Tan Nguyen Tien , Dien Vu Minh , Quang Khong Vu

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Abstract

This study investigates the effects of the heat transfer performance of the fluids and their supplied pressure on TEGs’ performance. Consequently, experiments are conducted to evaluate the fluids as mentioned and the impact of various pressures on the bars from 2 to 6. In addition, the TEG’s working temperature is adjusted to adapt each fluid’s characteristics to find the maximum power point tracker. In general, the study’s results reveal that the power of the TEG significantly depends on the features of the fluids. Indeed, freshwater shows superior heat exchange efficiency compared to other liquids. When fixing the temperature of the cold side about 30 °C, the maximum power for the fluids corresponding to the different hot side temperature is 9.8, 30, 35, and 44 W, and for the fluids of water, ethylene glycol, lubricant, and glycerin, respectively. In addition, when the flow rate changes from 1 to 5 L/min, the voltage and output capacity of the thermoelectric device tend to increase gradually. In conclusion, working fluids’ boundary conditions and characteristics dramatically affect the TEG performance.

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采用不同热交换器流体的热电发电系统的实验与性能比较

本文研究了流体的传热性能及其供气压力对热交换器性能的影响。因此，进行了实验，以评估上述流体和不同压力对杆从2到6的影响。此外，TEG的工作温度可以调整，以适应每种流体的特性，以找到最大功率点跟踪器。总的来说，研究结果表明，TEG的功率在很大程度上取决于流体的特性。事实上，与其他液体相比，淡水表现出更好的热交换效率。当冷侧温度固定在30℃左右时，不同热侧温度对应的流体最大功率分别为9.8 W、30 W、35 W和44 W，水、乙二醇、润滑剂和甘油的流体最大功率分别为30 W、35 W和44 W。另外，当流量从1 ~ 5l /min变化时，热电装置的电压和输出容量有逐渐增大的趋势。综上所述，工质的边界条件和特性对TEG的性能影响很大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Heat and Fluid Flow 工程技术-工程：机械

CiteScore

5.00

自引率

7.70%

发文量

131

审稿时长

33 days

期刊介绍： The International Journal of Heat and Fluid Flow welcomes high-quality original contributions on experimental, computational, and physical aspects of convective heat transfer and fluid dynamics relevant to engineering or the environment, including multiphase and microscale flows. Papers reporting the application of these disciplines to design and development, with emphasis on new technological fields, are also welcomed. Some of these new fields include microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.