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山东大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (2): 122-127.doi: 10.6040/j.issn.1672-3961.0.2015.373

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发动机尾气温差发电装置

马宗正1,2,邵凤翔1,王新莉1,杨安杰1,2   

  1. 1.河南工程学院机械工程学院, 河南 郑州 451191;2.河南工程学院动力机械与车辆工程研究所, 河南 郑州 451191
  • 收稿日期:2015-11-17 出版日期:2016-04-20 发布日期:2015-11-17
  • 作者简介:马宗正(1981— ),男,山东济南人,副教授,博士,主要研究方向为车辆的节能减排技术. E-mail:zongzhengma@haue.edu.cn
  • 基金资助:
    河南省高等学校青年骨干教师资助项目(2014GGJS-120);郑州市科技攻关资助项目(20140596)

Thermoelectric generator system based on engine exhaust gas

MA Zongzheng1,2, SHAO Fengxiang1, WANG Xinli1, YANG Anjie1,2   

  1. 1. School of Mechanical Engineering, Henan University of Engineering, Zhengzhou 451191, Henan, China;
    2. Research Center of Power Machinery and Vehicle Engineering, Henan University of Engineering, Zhengzhou 451191, Henan, China
  • Received:2015-11-17 Online:2016-04-20 Published:2015-11-17

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摘要： 为了对发动机尾气中蕴含的高温能量进行回收利用,对基于温差发电的发动机尾气温差发电装置进行试验。首先基于现有发动机台架试验系统增加温度、电压和电流测量系统,在此基础上,通过测量不同内部结构集热器表面温度和排气噪声的变化得到集热器内部结构对温差发电性能的影响规律,通过测量不同冷却方式下温差发电片两端温度以及输出电压和电流的变化,得到散热器冷却方式对温差发电性能的影响规律。结果表明,集热器内部结构采用中空结构时,不同位置表面温度差在6 ℃以内,有利于保持其表面温度的均匀性,有利于电能输出,但是对于降低噪声没有帮助;采用强制风冷方式有助于提高温差发电装置两端温差,相对于自然冷却方式温差大约可提高14 ℃,从而提升输出电能,但是由于风速的提升可以同时增加冷端和热端的表面换热效率,使得较多的热量扩散到环境中,从而产生当风速达到某一数值后温差不变的现象;相比于侧面冷却,正面冷却方式更具有优势,大约将温差发电器两端的温差提升15 ℃,但是只能冷却一面。

关键词: 台架试验, 换热效率, 数值计算, 温差发电, 冷却方式

Abstract: In order to recycle the waste energy from the exhaust gas of the internal combustion engine, one thermoelectric generator system(TEG)based on the TEG technology was experimentally studied. The test bed was added the temperature, voltage and currency measurement system based on the existing engine test systems firstly. Then the impacts of the internal structure of the heat collector on the TEG performance was got by measuring the temperature and noise variation for different inner structure while the impacts of the radiator cooling methods on the TEG performance was reached by measuring the temperature difference of the both ends and output voltage and currency of the TEG. The results showed that the internal structure of the collector with hollow structure was more conducive to maintain the surface temperature uniformity where the temperature difference was under 6 ℃ for the different points which was helpful to electricity energy output, but this structure was not helpful to reduce noise. It also indicated that forced air cooling method was good for improving the TEG temperature difference and enhancing the electricity energy output which could raise the temperature difference by 14 ℃ compared with naturral air cooling method, but the improvement was not changed when the velocity was higher than a limit value, because the heat transfer efficiency was increased simultaneously for both ends of TEG and more energy was released to the environment. Meanwhile, compared with the side cooling method the facade cooling was better which could raise the temperature difference by 15 ℃ except the single face cooling.

Key words: numerical calculation, cooling method, thermoelectric generator, bench experiment, heat transfer efficiency

中图分类号: 

  • TK417
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