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Table 1: comparison between single glazed high performance facade and double skin
 Single skin facade Double skin facade
Shading co-efficient (Carrier method) 0·3 0·15
Heat transfer co-efficient (W/m2K) 5·0 1·25
Table 2: results of cfd analysis (Shading)
 Glass shading Outside pane Inside pane Floor Ceiling Total (kW)
Summer (W/m2)fully shaded 4 4 28 12 1·22
Winter (W/m2) fully sunlit 40 40 280 120 12·16
Table 3: results of cfd analysis (temperature)
 Max internal tempExhaust temp. Outside pane heat transInside pane heat trans.
Summer35·10°C 28·80°C average1·7 kW from outside1·5 kW to inside
Winter 76·70°C 32·80°C average 6·8 kW to outside 2·4 kW to inside