Thermal Insulation Performance of Radiant Barrier Roofs for Rural Buildings in the Qinba Mountains

Table 1

Parameters of building materials.

Project	Material	d	ρ	λ	с	r	ε
		(mm)	(kg/m³)	(W/m K)	(J/kg K)	(m^2K/W)
Roof	Clay tile	20	2000	1	800	0.02	0.91
Floor	Cement mortar	20	1800	0.93	1050	0.1	0.96
	Concrete	100	2500	1.74	920		—
	Cement mortar	20	1800	0.93	1050		0.96
Wall	Cement mortar	20	1800	0.93	1050	0.34	0.96
	Solid clay bricks	240	1800	0.81	1050		—
	Cement mortar	20	1800	0.93	1050		0.96