Performance analysis of multi-stage thermoelectric coolers

被引：38
|
作者：
Karimi, G. [1 ]
Culham, J. R. [2 ]
Kazerouni, V. [1 ]
机构：
[1] Shiraz Univ, Dept Chem Engn, Shiraz, Iran
[2] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 2011年 / 34卷 / 08期
关键词：
Thermoelectricity; Refrigerator; Cooler; Heat flux; Thermal analysis; Performance;
D O I：
10.1016/j.ijrefrig.2011.05.015
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Multi-stage thermoelectric coolers offer larger temperature differences between heat source and heat sink than single-stage thermoelectric coolers. In this paper, a pyramid-type multi-stage cooler is analyzed, focusing on the importance of maximum attainable target heat flux and overall coefficient of performance, COP. Having considered the COP and the thermal resistance of a heat sink as key parameters in the design of a multi-stage thermoelectric cooler, analytical formulas for COP and heat sink thermal resistance versus working electrical current are derived. For a fixed cooling target heat flux, the ratio of the heat sink thermal resistance to the respective single-stage value and the attainable COP in a cascaded cooler are determined as a function of the number of stages. Numerical simulations clearly indicate that the thermal resistance of the hot side heat sink is the controlling factor in determining the overall performance of a multi-stage thermoelectric cooler. (C) 2011 Elsevier Ltd and IIR. All rights reserved.
引用
收藏
页码：2129 / 2135
页数：7
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