Simulation and analysis of the thermal performance of double skin facade
Double Skin Facade (DSF) has the lighting, thermal insulation, sound insulation and etc. ecologi cal performance and is widely used in the variety buildings gradually. DSF is one of the main envelop styles of public buildings, but the comprehension of its thermal performance is not enough yet. To know its thermal performance well, further study should be carried out. In this thesis, a building in Hangzhou was simulated. The velocity and temperature field of DSF were analyzed by CFD method. Taking the advantage of energy consumption analysis software, the heating and cooling energy consumption of building which the envelope was DSF or single glazing curtain wall were compared and analyzed. Because of the importance of the compositive U-value to the DSF thermal performance evaluation, the influence of the shading and airspace width to the compositive U -value were also discussed. The velocity field of DSF showed: with the outdoor wind pressure, the air came into from the inlet, mixed in the DSF and flowed out from outlet. Because of the area change of inlet and outlet,the velocity of air flow increased in the DSF. Just because of the pressure of inlet and outlet and the inducement of air flow, the air flow in the DSF was continuous, the heat gain were bring out to the outdoor and the thermal performance of DSF was enhanced. The temperature field of DSF showed: the outer surface temperature of DSF was 41.4℃ and the inner surface temperature of DSF was 27.2℃, so the thermal comfort was improved greatly. The results of the compositive U-value testified that the width of airspace was a main factor that affected the thermal performance of DSF. In this case, when the width of airspace was smaller than 200mm, the thermal performance of DSF deceased greatly. At the same time, the discussion results showed that shading had a positive effect to the thermal performance of DSF. Above all, the DSF had a superiorer energy efficiency potential than the other single glazing curtain wall. It was one of the ecological building envelops.
double skin facade velocity field temperature field compositive U -value
ZHAO Li-hua GAO Yun-fei LI Li CHEN Zhuo-lun
The Building Environment Energy Laboratory, South China University of Technology, Guangzhou 510640, China
国际会议
哈尔滨
英文
447-450
2007-01-15（万方平台首次上网日期，不代表论文的发表时间）