Analyse on the characteristic of cooling load in light weight PCM building

Calculates the envelope thermal characteristics of the Phase Change Material (PCM) lightweight building fabrics, such as the thermal inertia index, storage heat coefficient, delay time and attenuation ratio, ect. Comparing with the common lightweight building fabric the envelope thermal characteristics of the PCM lightweight building fabrics has been improved preferably. The thermal inertia index, attenuation ratio and delay time of PCM components are respectively the 3.75, 14 and 10 times as the one of the common building fabrics. So ,it will be less cooling load in the PCM lightweight building than the common lightweight building. Then combining the nighttime ventilation we carries through the contrast experiments between light weight PCM wall and ordinary building in chongqing summer, the results show that the electricity consumption in light weight PCM wall room be 32.5% less than the one in ordinary room, the results also show that outdoor temperature have great effect on the energy efficiency.