A Financing Model to Solve Financial Barriers for Implementing Green Building Projects

Table 1

Overview of three residential building projects applying different energy reduction items.

Category	Items		Equipment			Energy saving (%)			Additional costs; (US$/3.3 m^2)
			Case 1	Case 2	Case 3	Case 1	Case 2	Case 3	Case 1	Case 2	Case 3
		Change of the insulating materials	Neopor thermal insulation (0.032 W/m^2K)				4.00			1.45
		Change of the insulation thickness of the bedroom and balcony	0.156 W/m^2K/170 mm				7.80			5.70
	Application of the insulating materials	Change of the insulation thickness of the balcony	0.432 W/m^2K/55 mm
		Change of the insulation thickness of the ground and top floor	—	0.195 W/m^2K/0.175 W/m^2K; 150 mm/150 mm (65 + 85)		—	1.50		—	0.32
		Reinforcement of the pipe insulation	—	Elastomeric flexible cellular insulation		—	0.50		—	2.12
IR		Change of windows of the bedroom	0.97 W/m^2K/22 mm + 16 mm (double glazing) (PVC290)				3.40			2.62
		Change of windows of the balcony	Dry: PVC170 (L/S), wet: PVC130 (S/D)				2.20			1.52
		Change of windows of the living room	1.51 W/m^2K/52 mm; (triple glass (R183))	1.18 W/m^2K/52 mm (triple glass (PVC220))		4.30	8.30		2.66	4.02
	Application of hi-per windows	Reinforcement of thermal performance of the windows	—		1.51 W/m^2K (double window); (PVC16 mm + PVC16 mm)	—		1.40	—		4.23
		Reinforcement of thermal performance of the front door	—		0.99 W/m^2K (insulation door)	—		0.50	—		1.09
		Reinforcement of thermal performance of the door to balcony	—		2.16 W/m^2K (wood door)	—		1.30	—		1.36
	Boiler	Boiler	Condensing boiler				8.94			0.36
	Application of the private high efficiency equipment	High efficiency lamps; (bedroom)	FPL32W				1.05			0.03
		High efficiency lamps; (bathroom)	FL28W				0.14			0.03
HE		High efficiency lamps; (front door, balcony)	LED21W/EL15W				1.04			0.58
		Ventilation system	—	Heat recovery ventilator + heat exchanger		—	7.00		—	5.30
	Application of the public high efficiency equipment	High efficiency lamps; (basement garage)	FL29W				1.23			0.03
		Electric transformer	High efficiency electric transformer				1.53			0.84
RE	Photovoltaic system		0.06 kw/housing unit				3.2			2.78
O	Water treatment system		Water transportation pump				0.12			0.02
	LED (light-emitting diode) signs		LED				0.46			0.11
Total						33.96	46.96	50.16	18.71	27.53	34.50

IR: insulation reinforcement.
HE: high efficiency equipment.
RE: renewable energy.
O: other.