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Experimental investigations on thermal performance of spray cooling double skin façade in hot humid climate region
Highlights Thermal performance of the spray cooling double skin facade is experimentally investigated. Impact of ventilation mode on the spray cooling effect of double skin facade are compared. Impact of operation time on the spray cooling effect of double skin facade are compared. Impact of spray direction on the spray cooling effect of double skin facade are compared. The appropriate operation mode of the spray cooling double skin facade in hot humid climate is obtained.
Abstract Thermal performance of the spray cooling double skin façade in hot and humid climate region are experimentally investigated in this study. Two identical double skin facades are constructed for the comparative analysis. Thermal performance of the spray cooling double skin façade is evaluated by the indicators of cavity air temperature, glass surface temperature, the U-value, and solar heat gain coefficient. The influences of the ventilation mode (open conditions of the top and bottom vents in the double skin façade system), operation time (spray and interval time of the spray system), and spray direction on the cooling effect of the spray cooling double skin façade are experimentally compared and analyzed, and the operation mode of the spray cooling double skin façade with the best thermal performance is obtained. The results demonstrate that the appropriate operation mode of the spray cooling double skin façade is that the top and bottom vents are opened, and the spray direction is from up to down with the operation time of 10/15 min (spray/interval time). The average temperature of the cavity and inner glass decreased by 8.1 °C and 3.7 °C, respectively. The mean U-value and SHGC of the spray cooling double skin façade are 2.13 W/(m2·K) and 0.25, respectively, which are smaller than the most stringent limit values of the current national standard. The spray cooling double skin façade has good thermal performance in hot humid climate region in China.
Experimental investigations on thermal performance of spray cooling double skin façade in hot humid climate region
Highlights Thermal performance of the spray cooling double skin facade is experimentally investigated. Impact of ventilation mode on the spray cooling effect of double skin facade are compared. Impact of operation time on the spray cooling effect of double skin facade are compared. Impact of spray direction on the spray cooling effect of double skin facade are compared. The appropriate operation mode of the spray cooling double skin facade in hot humid climate is obtained.
Abstract Thermal performance of the spray cooling double skin façade in hot and humid climate region are experimentally investigated in this study. Two identical double skin facades are constructed for the comparative analysis. Thermal performance of the spray cooling double skin façade is evaluated by the indicators of cavity air temperature, glass surface temperature, the U-value, and solar heat gain coefficient. The influences of the ventilation mode (open conditions of the top and bottom vents in the double skin façade system), operation time (spray and interval time of the spray system), and spray direction on the cooling effect of the spray cooling double skin façade are experimentally compared and analyzed, and the operation mode of the spray cooling double skin façade with the best thermal performance is obtained. The results demonstrate that the appropriate operation mode of the spray cooling double skin façade is that the top and bottom vents are opened, and the spray direction is from up to down with the operation time of 10/15 min (spray/interval time). The average temperature of the cavity and inner glass decreased by 8.1 °C and 3.7 °C, respectively. The mean U-value and SHGC of the spray cooling double skin façade are 2.13 W/(m2·K) and 0.25, respectively, which are smaller than the most stringent limit values of the current national standard. The spray cooling double skin façade has good thermal performance in hot humid climate region in China.
Experimental investigations on thermal performance of spray cooling double skin façade in hot humid climate region
Wang, Yanjin (author) / He, Fangyi (author) / Lv, Zhihai (author) / Yang, Weibin (author) / Wang, Qian (author)
Energy and Buildings ; 277
2022-10-25
Article (Journal)
Electronic Resource
English
GLASS AND PERFORATED METAL DOUBLE SKIN FAÇADE PERFORMANCE IN HOT HUMID CLIMATE
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A new type of double-skin façade configuration for the hot and humid climate
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