Study on the Characteristics of Thermal Output and Thermal Storage in a Thermally Activated Building System with Phase Change Material

Abstract TABS (Thermally Activated Building System) has recently applied by huge commercial buildings, airports, and convention centers in Europe. TABS provides night-time thermal storage by heating or cooling. The embedded water-basedheating and cooling system uses the high thermal inertia of concrete in the building construction, in which a heating orcooling pipe is embedded. The aim of this study is to analyze the thermal storage and thermal output of TABS applied with PCM (Phase Change Material). To achieve this, prototypes of TABS and the thermal properties of various PCMs wereinvestigated. By using the simulation program Physibel Voltra 6.0 W, the thermal storage and thermal output were evaluatedaccording to a heating and cooling operation schedule. Key words Thermally activated building system(TABS, 구체축열시스템), PCM, Phase change material(상변화물질), Thermal output(방열량), Thermal storage(축열)†Corresponding author, E-mail: limit0@ewha.ac.kr 1. 서 론 콘크리트 구조체를 이용하는 구체축열 공조시스템은 배관을 콘크리트 내에 매설하여 건물 구조체를 축열