Improvement of a thermoelectric and vapour compression hybrid refrigerator

被引:33
作者
Astrain, D. [1 ]
Martinez, A. [1 ]
Rodriguez, A. [1 ]
机构
[1] Univ Publ Navarra, Mech Energy & Mat Engn Dept, Pamplona 31006, Spain
关键词
Thermoelectrics; Computational model; Refrigeration; Vapour compression; Thermal resistance; Coefficient of operation; HEAT; PERFORMANCE; SYSTEM; OPTIMIZATION; EVAPORATORS; CYCLE;
D O I
10.1016/j.applthermaleng.2012.01.054
中图分类号
O414.1 [热力学];
学科分类号
摘要
This paper presents the improvement in the performance of a domestic hybrid refrigerator that combines vapour compression technology for the cooler and freezer compartments, and thermoelectric technology for a new compartment. The heat emitted by the Peltier modules is discharged into the freezer compartment, forming a cascade refrigeration system. This configuration leads to a significant improvement in the coefficient of operation. Thus, the electric power consumption of the modules and the refrigerator decreases by 95% and 20% respectively, with respect to those attained with a cascade refrigeration system connected with the cooler compartment. The optimization process is based on a computational model that simulates the behaviour of the whole refrigerator. Two prototypes have been built and tested. Experimental results indicate that the temperature of the new compartment is easily set up at any value between 0 and -4 degrees C, the oscillation of this temperature is always lower than 0.4 degrees C, and the electric power consumption is low enough to include this hybrid refrigerator into energy efficiency class A, according European rules and regulations. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:140 / 150
页数:11
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