A Building Energy-Saving Method of Small High-Rise Office Building Based on BIM Model

Table 1

Optimization parameters and constraint parameters of building objects.

Serial number	Parameter name optimization	Company	Constraint condition
			Guangzhou	Beijing
1	Orientation	。	0–260
2	Building chief a	M	ab = 300;
3	Building width b	M	1/2 < a/b < 1
4	AG1 opening 1 area		AG1/ah < 0.4;	AG1/ah < 0.5;
			2 < AG1 < 20	2 < AG1 < 20
5	AG2 opening 2 area		AG2/ah < 0.4;	AG2/ah < 0.3;
			2 < AG2 < 20	2 ≤ AG2 ≤ 20
6	Wall heat transfer coefficient K1		0.7 < k1 < 2.5	0.7 ≤ k ≤ 0.45
7	Roof heat transfer coefficient K2		0.4 < k5 ≤ 0.9	0.5 ≤ k5 ≤ 1.0