Power generation characteristics of a thermoelectric modules-based power generator assisted by fishbone-shaped fins: Part II – Effects of cooling water parameters
Power generation characteristics of a thermoelectric modules-based power generator assisted by fishbone-shaped fins: Part II – Effects of cooling water parameters
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DOI：
10.1080/15567036.2019.1624891
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发表时间：
2019-05
期刊：
影响因子：
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通讯作者：
A. Hoang;X. Nguyen;A. Le;Minh Tuan Pham;T. H. Hoang;A. Al-Tawaha;Surfa Yondri
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文献类型：
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作者：
A. Hoang;X. Nguyen;A. Le;Minh Tuan Pham;T. H. Hoang;A. Al-Tawaha;Surfa Yondri
摘要基于热电模块的热电机组运行控制与结构优化相结合是改善热电机组发电特性的有效方法。本研究的目的是通过实验研究基于瞬变电磁法的TEG的发电特性，包括电压、功率输出和转换效率，在TEG中加入鱼刺翅片，目的是加强TEG热侧进口热空气的换热。在进风温度为200~500℃、进风质量流量恒定的情况下，分析了冷却水质量流量(MFR)对热泵发电特性的影响。与不带鱼骨状翅片的TEG相比，带有鱼骨状翅片的TEG最大输出电压提高了31.37V，输出功率提高了16.49W。用热端温度、冷端温度和优值系数(ZT)确定了鱼骨型三甘醇的转换效率。结果表明，带有鱼骨状翅片的TEG与不含鱼骨状翅片的TEG相比，转换效率平均提高了2.93%。此外，还对冷却水出口温度进行了实际测量，以评价鱼骨状翅片对瞬变电磁炉热侧向冷侧热流密度的影响。
ABSTRACT Operation control combined with the optimization of the structure for thermoelectric generators (TEGs) based on thermoelectric modules (TEMs) is an effective method to improve the power generation characteristics of TEGs. The present study is intended to experimentally investigate the power generation characteristics including voltage and power output, and conversion efficiency of a TEM-based TEG, which is added fishbone-fins aiming to enhance heat exchange of hot inlet air to the hot side of TEG. The effects of mass flow rate (MFR) of cooling water on the power generation characteristics of TEGs are analyzed in the case of the hot inlet air temperatures of 200–500°C and a constant MFR of hot inlet air. Compared to TEM-based TEG without fishbone-shaped fins, TEM-based TEG with fishbone-shaped fins has a maximum increase by 31.37 V of voltage output and 16.49 W of power output. Conversion efficiency of TEM-based TEG with fishbone-shaped fins is determined through the temperatures of hot side and cold side as well as figure-of-merit (ZT). As a result, an average increase of 2.93% of the conversion efficiency for TEM-based TEG with fishbone-shaped fins compared to the case of TEM without fishbone-shaped fins is found. In addition, the outlet temperature of cooling water is also practically measured to evaluate the influences of fishbone-shaped fins on the heat flux transferred from hot side to cold side of TEM.