废热温差发电器驱动的电化学制冷系统研究  

Performance Analysis of a Thermoelectric Generators Powered Thermally Regenerative Electrochemical Refrigeration

作　　者：李保德[1] 隆瑞[1] 刘伟[1] 刘志春[1] 

机构地区：[1]华中科技大学能源与动力工程学院,武汉430074

出　　处：《工程热物理学报》2017年第12期2515-2521,共7页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划(No.2013CB228302)

摘　　要：提出了利用废热(工业废气、尾气余热等)温差发电器驱动的电化学制冷系统,并建立数学物理模型,分别研究废热温度和环境温度对系统的功率消耗、热效率、制冷功率和性能系数的影响.结果表明,温差发电器性能的模型计算值与文献测试值误差在6.8%以内;随着废热温度的增加,系统的输出功率、热效率和制冷功率随之增加,但性能系数急剧减小;随着环境温度的增加,系统热效率和制冷功率逐渐降低,但输出电压和性能系数逐渐增加;与TGM-127型系统相比,虽然HZ-2型系统的热电转换性能处于劣势,但其体积和重量明显减小,更适合应用在汽车、卫星等领域。A mathematic model of a thermoelectric generators （TEG） powered electrochemical refrigeration system consisting of a thermoelectric module used to convert waste heat into electricity and a thermally regenerative electrochemical refrigeration （TRER） was proposed. To evaluate the system performance, the impacts of temperatures of the waste heat and environment on power output, thermal efficiency, cooling load rate and coeffcient of performance （COP） were systematically investigated. Results revealed that the maximum deviation of calculated value of this model and experimental data in the literature was within 6.8%. With the increase of waste heat temperature, the power output, thermal effciency and cooling load rate of the system were increased, however, the COP decreased sharply. With the increase of ambient temperature, thermal efficiency and cooling load rate of the system gradually decreased, whereas the output voltage and COP increased gradually. The type HZ-2 thermoelectric module are at a disadvantage of the thermoelectric conversion performance, however, its smaller size and weight are more suitable for the application in automobile, satellite and other fields.

关 键 词：废热 温差发电器 电化学制冷 模型验证 性能系数 

分 类 号：TK123[动力工程及工程热物理—工程热物理]