열전소자 기반 복사 냉방 패널의 최적배열 설계

Abstract

This paper proposes a thermoelectric module radiant cooling panel (TEM-RCP) and its desirable arrangement of thermoelectric modules (TEMs) for uniform temperature distribution. The design methods for the TME-RCP was developed based on the semi-black box model of TEM and the two-dimensional finite difference method. A mock-up model of the TEM-RCP was constructed to verify the proposed model and results. The constructed TEM-RCP consists of seven TEMs, an aluminum panel, a heat sink attached to the TEMs, air duct and fan for heat rejection. The TEM is a solid state heat pump operated by direct current based on the Peltier effect. When the panel temperature at the aluminum radiant panel was maintained at 16°C during operation, the heat rejection was occurred at the hot side of TEM and it was removed using forced convection by outside air. The main design factor in this study was the panel temperature distribution. Therefore, the suitable arrangement and interval between TEMs were investigated not to exceed the maximum temperature difference of 3°C across a given grid. As a result, the triangular grid was found as the best grid for an uniform temperature distribution of the TEM-RCP. The optimal interval between the TEMs was 0.2 m to 0.3 m according to the room condition and operation characteristics of the TEM. The optimized results were validated through experiments using the mock-up model of TEM-RCP.