열전소자를 이용한 소형 냉각시스템의 냉각성능에 관한 연구

Abstract

This study was investigated on cooling performance of small cooling system using thermoelectric module. This study set up cooling system of 4 type to control the heat generated by the computer. In order to find the heat transfer process of cooling system, this study was performed experiments of temperature distribution and flow visualization in cooling field of each cooling system. Also, numerical analysis was performed to assess the preliminary data to performance improvement and optimization of cooling system under same experiment condition. The experimental results revealed that cooling performance of cooling system improved when voltage applied by thermoelectric module was increased gradually. The voltage applied by thermoelectric module increases, cold side surface of thermoelectric module was frozen, and was occurred dew formation by temperature difference between thermoelectric module and ambient temperature. Because of this, this study chose 7V as applied voltage by thermoelectric module. This study was compared the cooling performance of cooling system for the cases; one without flow and the other with flow fan. The temperature distributions in the whole cooling field of cooling system were uniformly maintained about 13℃±0.5℃ due to forced convection phenomenon by flow fan. The forced convection phenomenon by flow fan contributed to heat transfer enhancement of cooling field. When the cooling system with heat sink and flow fan was used to cooling of computer, the internal temperature distributions of computer were lowered and uniformly maintained. The numerical analysis results revealed that temperature distribution of cooling system rapidly fell early on but uniformed maintained after a period of time. This was similar to cooling pattern of experimental results. The numerical analysis results will be used to assess the preliminary data to performance improvement and optimization of cooling system.