Impact Analysis of Window-Wall Ratio on Heating and Cooling Energy Consumption of Residential Buildings in Hot Summer and Cold Winter Zone in China

Table 2

Features of the glazing systems.

Glazing type	Composition	SHGC	Solar transmittance	Solar reflectance	Visible light transmittance	Visible light reflectance	Heat transfer coefficients (W/(m^2·K))
Hollow glass	6/9/6	0.722	51%	11%	63%	13%	3.100
Low- glass	6 (Low-)/9/6	0.426	33%	26%	51%	23%	2.100