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Modified pulse operation of thermoelectric coolers for building cooling applications

机译：用于建筑物冷却应用的热电冷却器的修改脉冲操作

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This paper presents a modified pulse operation of the thermoelectric cooler (TEC) for building space cooling application. In the normal pulse operation of a thermoelectric cooler, a current pulse is given as the input, but in the modified pulse operation, along with the pulse current, the hot side heat transfer coefficient is also pulsed. A numerical model for the thermoelectric cooling system is developed assuming one-dimensional unsteady state heat transfer having convective heat transfer boundary condition at its hot side and constant heat flux boundary condition at its cold side. Then the thermoelectric cooling system is studied with variable pulse current ratio, cooling load, variable pulse width and with dissimilar pulse shapes. The result shows that, for a typical operating condition with the modified pulse operation, the thermoelectric cooling system can provide an average cooling power of 600 W with the COP of 1.01, which are 23.3% and 2.12% higher than the normal mode of operation (i.e. without current pulse) respectively. This study also found that the rectangular-shaped pulse can provide higher average cooling power and COP when compared with the ramp and exponential pulse. (C) 2017 Elsevier Ltd. All rights reserved.
机译：本文介绍了一种用于建筑物空间制冷应用的热电冷却器（TEC）的改进型脉冲操作。在热电冷却器的正常脉冲运行中，将电流脉冲作为输入，但在改进的脉冲运行中，与脉冲电流一起，也会对热侧传热系数进行脉冲控制。建立热电冷却系统的数值模型，假设其一维非稳态传热在其热侧具有对流传热边界条件，而在其冷侧具有恒定热通量边界条件。然后研究了具有可变脉冲电流比，冷却负载，可变脉冲宽度和不同脉冲形状的热电冷却系统。结果表明，对于具有改进脉冲运行的典型运行条件，热电冷却系统可提供600 W的平均冷却功率，COP为1.01，分别比正常运行模式高23.3％和2.12％（即没有电流脉冲）。这项研究还发现，与斜坡和指数脉冲相比，矩形脉冲可以提供更高的平均冷却功率和COP。 （C）2017 Elsevier Ltd.保留所有权利。

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