A simple and effective model for prediction of effective thermal conductivity of vacuum insulation panels

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Table 2 ETC. of VIPs samples and the inside air pressure in the measurements

	Core porous materials
	open cellular foam polyurethane					superfine fibrous glass mate					nano-grain silica dioxides
NO.	PU1	PU2	PU3	PU4	PU5	FG1	FG2	FG3	FG4	FG5	SI1	SI2	SI3	SI4	SI5
Setting air pressure/Pa	0.1	1	10	10²	10³	0.1	1	10	10²	10³	0.1	1	10	10²	10³
Final air pressure/Pa	5	13	45	140	713	0.6	7	25	165	763	15	38	80	241	892
Testing ETC./mW/(m · K)	4.12	4.15	5.04	16.23	21.16	2.68	2.96	3.19	5.84	14.63	3.06	3.82	4.14	4.75	8.24
Calculated ETC. mW/(m · K)	4.03	4.42	4.84	14.33	19.21	2.61	2.83	2.94	4.86	10.44	3.23	3.35	3.98	4.12	8.08