Modeling of phase change material in the building with the aim of energy management

PCMs are materials with thermal storage capability which are used with two purposed in buildings: Increase the thermal interia of the building to greater use of the natural heat of the sun to heat and also reduce the need for heating and cooling by cooling-heating equipment. In this study the use of a pcm layer in the ceiling and walls of a building is simulated using the c++ software in a hot and humid climate (Boushehr) and cold and dry climate (Hamedan) to energy consumption and maintain indoor temperature close to comfortable temperature. The effects of PCM layer on reduce input/loss heat in summer and winter and the internal tempreture of the ceiling and walls were evaluted in all months of the year. Also, to explore the best orientation for the wall includes PCM, different orientation of the wall is simulated. The results showed that the phase change temperature of PCM should be in the range work of desired climate. Hence, PCM that used for a climate will not be suitable for another the use of a 3cm layer of PCM with the phase change temperature of 280C can reduce the input/loss heat through the roof of the building to 61% in summer and 12% in winter in Boushehr city. Also, by increasing the thickness of the PCM, it’s performance improvements in this area. The results of the simulation showed that the PCM in the wall facing south show best performance.