축열재 일체형 열전소자 적용 천장 복사 냉방 패널의 에너지 성능 분석

Abstract

This study proposes a phase change material based radiant cooling panel with thermoelectric modules (PCM-TERCP) and evaluate its performance characteristics during melting process of phase change materials in designed condition. The PCM-TERCP consists of phase change materials (PCMs), thermoelectric modules (TEMs) and aluminium panels. TEMs operate to freeze the PCM, and PCM stores the cooling thermal energy to maintain the constant surface temperature of the panel for radiant cooling. The main purpose of thermal energy storage systems is shifting the cooling season’s electricity consumption from day-time to night-time. Therefore, PCM-TECRP can implement the off-peak operation and it is expected that energy can be saved. Therefore, we constructed the mock up model of PCM-TERCP to identify the factors that affect the discharging process of PCM-TERCP. The mock up model of PCM-TERCP was made of top aluminium panel with three TEMs attached on the upper surface of the top panel, and a heat sink was attached on the hot side of each TEM to remove the heat, and two PCM pouches were installed between top and bottom panel. In addition, the melting temperature of PCM and target surface temperature of bottom panel were designed to be 16℃. Also, the room temperature was set to be 24℃. As a result, radiative cooling was operating a temperature range of 16-20℃ for 3 hours.