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Novel experiments on COP improvement of thermoelectric air coolers

机译：热电空气冷却器COP改善的新实验

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Although individual commercial thermoelectric module has been widely investigated and its cooling behavior is clear, jointed thermoelectric modules show completely different cooling behavior and higher coefficient of performance (without the change of input electrical power) which requires further study. At the first step of this research, cooling characteristics of 2-jointed, 4-jointed and 6-jointed thermoelectric modules are experimentally evaluated and discussed under the same range of input electrical power. In the same total input electrical power, 6-jointed TEM (thermoelectric module) provided around 100% higher COP (coefficient of performance) than the 2-jointed TEM which was significant. Cooling behavior of different-number jointed TEM (in the same input power) are analyzed and discussed in this paper. In the second step of this research, the COP of 6-jointed TEM cooler (selected from the first step) has been increased again by proposition of two new techniques based on the modification of the popular rectangular-fin heat sink. Attempts are made to further enhance the COP of the system by two methods including "perforating technique" and "spring wire technique" through a Peltier air cooler which have not been proposed before. In the same electrical power input, perforating technique enhanced the thermal performance of the Peltier air cooler around 50% (totally 150% compared to the 2-jointed TEM with simple heat-sink) and the use of spring-wire between the fins of heat-sink improved the COP around 130% (totally 230% compared to the 2-jointed TEM with simple heat-sink). Exact explanation of the quality/quantity and improvement reasons of each technique are described in this paper for different working conditions of the cooler.
机译：尽管已经对单个商用热电模块进行了广泛的研究，并且其冷却性能很明显，但连接的热电模块显示出完全不同的冷却性能和更高的性能系数（无需更改输入电功率），需要进一步研究。在这项研究的第一步，在相同输入功率范围内，对2接头，4接头和6接头热电模块的冷却特性进行了实验评估和讨论。在相同的总输入电功率下，6接头TEM（热电模块）比2接头TEM提供了大约100％的COP（性能系数）。本文分析并讨论了在相同输入功率下不同数量的TEM的冷却行为。在此研究的第二步中，通过基于流行的矩形翅片散热器的改进提出了两种新技术，提出了六接头TEM冷却器的COP（从第一步中选择）。试图通过之前未提出的通过Peltier空气冷却器的“穿孔技术”和“弹簧线技术”这两种方法来进一步提高系统的COP。在相同的电源输入下，穿孔技术将珀尔帖空气冷却器的热性能提高了约50％（与带有简单散热器的2联TEM相比，总热性能提高了150％），并且在散热片之间使用了弹簧线散热片将COP改善了约130％（与采用简单散热片的2联TEM相比，总计提高了230％）。本文针对冷却器的不同工作条件，详细描述了每种技术的质量/数量以及改进原因。

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