Suitable Glazing Selection for Glass-Curtain Walls in Tropical Climates of India

Table 1

Different kinds of glass-curtain walls used in this study. The values of both U and g have been computed by WINDOW 5.0.

S. no.	Glazing type	Description	Identity	U (W/m^2K )	SHGC* (g-value)
1	Double glazed, clear glass window	6 mm clear glass + 12 mm air space + 6 mm clear glass	Clear-clear	2.95	0.73
2	Double glazed, low-e window	6 mm low-e glass + 12 mm air space + 6 mm clear glass	Low-e1-clear	1.80	0.68
3	Double glazed, low-e window	6 mm low-e glass + 12 mm air space+ 6 mm clear glass	Low-e2-clear	1.74	0.54
4	Double glazed, solar control (absorptive) window	6 mm solar control (absorptive) glass + 12 mm air space + 6 mm clear glass	Solar control-abs	2.80	0.24
5	Double glazed, solar control (reflective) window	6 mm solar control (reflective) glass + 12 mm air space + 6 mm clear glass	Solar control-ref	1.95	0.10

*Solar heat gain coefficient.