Calculation and optimization of heat exchangers for a thermoelectric cooling system
E.N. Vasil’ev
Institute of Computational Modeling SB RAS, Krasnoyarsk, Russia
Keywords: plate-finned heat exchanger, thermal resistance, thermoelectric cooling system, cooling capacity, coefficient of performance
Abstract
The processes of heat transfer in air and liquid plate-finned heat exchangers of a thermoelectric cooling system are considered. The flow modes in interfin channels are analyzed, and the local heat-transfer coefficients are determined. From the numerical solution of the two-dimensional thermal-conduction problem, the dependences of the thermal resistances of the heat exchangers on their geometric parameters are obtained. The influence of thermal resistances on the cooling capacity and on the coefficient of performance of the thermoelectric cooling system is determined. Optimization of heat exchangers in terms of fin thickness and interfin spacing has been performed.
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