TED-AJ03-508 SIMULATION AND EVALUATION OF THE THERMAL PERFORMANCE OF PCM WALLBOARD ROOMS LOCATED IN DIFFERENT CLIMATE REGIONS OF CHINA IN SUMMER

概要

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The mechanisms of applying phase change material (PCM) wallboard combined with controlled night ventilation to improve the indoor thermal performance in summer are illustrated. A theoretical model for analyzing the thermal performance of PCM wallboard rooms combined with controlled night ventilation in summer is developed. Two new parameters : I_<dc> and I_<dct> of describing the overheat effect of indoor air are defined. The influence of various relating factors on the thermal performance of PCM wallboard rooms is assessed. The appropriate climate condition for applying PCM wallboard is analyzed and the predicting results of the effect of applying PCM wallboard in different climate regions of China are presented. The results show that the thermal comfort degree can be obviously improved in the region where the temperature difference between daytime and nighttime is great while the average day temperature is not high. The model, the methodology and the results presented in this paper are helpful for effectively applying PCM wallboard in suitable regions.