Energy-Saving Design of Building Envelope Based on Multiparameter Optimization

Table 8

The value of each design variable when takes the minimum value.

Parameters of the category	The values
The height of the window (m)	4
The width of the window (m)	17.67
Thickness of concrete (m)	0.2
Heat transfer coefficient of concrete	0.11
Thickness of mortar (m)	0.02
Heat transfer coefficient of mortar	0.76
The thickness of insulating material (m)	0.06
Heat transfer coefficient of insulating material	0.08
The thickness of the window pane (m)	0.012
Heat transfer coefficient of window	5.7
Set indoor temperature in summer (°C)	24
The reflection ratio of the floor	0.5
The reflection ratio of the wall	0.8
Window reflection ratio	0.84
Ceiling reflection ratio	0.9
The total transmittance of the window	0.83
Density of concrete ()	1947
Density of mortar ()	1371
Density of insulating material ()	162
Set indoor temperature in winter (°C)	18