glassdbase: Velux

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Velux: 80

(int) 6mm laminated *SE1*, 0,2mm "vacuum",3mm clear float, 10mm 95% Krypton, 4mm tempered Q4 (ext)
Velux

Reference number: X011

Brief information Transmittance Total solar energy transmittance Selectivity index General color rendering index

Transmittance T_e, T_v, T_e/T_v Diagram

	Solar direct transmittance T_e [info]
	Light transmittance T_v [info]
	T_e/T_v [info]

T_e	T_v	T_e/T_v	Angle of incidence
0.318	0.590	0.539	0°
0.314	0.586	0.536	15°
0.303	0.576	0.527	30°
0.281	0.550	0.512	45°
0.269	0.534	0.504	50°
0.253	0.509	0.497	55°
0.229	0.470	0.488	60°
0.198	0.411	0.481	65°
0.178	0.373	0.477	67.5°
0.156	0.328	0.474	70°
0.130	0.276	0.471	72.5°
0.104	0.222	0.468	75°

Reflectance R_e, R_e' Diagram

	Solar direct reflectance R_e [info]
	Solar direct reflectance, inverted light propagation R_e' [info]

R_e	R_e'	Angle of incidence
0.334	0.223	15°
0.335	0.221	30°
0.347	0.229	45°
0.354	0.236	50°
0.369	0.250	55°
0.390	0.272	60°
0.424	0.309	65°
0.449	0.335	67.5°
0.478	0.365	70°
0.512	0.400	72.5°
0.542	0.440	75°

Absorptance A_e, A_e' Diagram

	Solar direct absorptance A_e [info]
	Solar direct absorptance, inverted light propagation A_e' [info]

A_e	A_e'	Angle of incidence
0.352	0.463	15°
0.362	0.476	30°
0.371	0.490	45°
0.377	0.495	50°
0.378	0.498	55°
0.381	0.498	60°
0.378	0.493	65°
0.373	0.487	67.5°
0.366	0.479	70°
0.358	0.470	72.5°
0.354	0.456	75°

Total solar energy transmittance g, g' Diagram

	Total solar energy transmittance g [info]
	Total solar energy transmittance, inverted light propagation g' [info]

g	g'	Angle of incidence
0.436*	0.521*	0°
0.435	0.523	15°
0.427	0.518	30°
0.409	0.502	45°
0.398	0.492	50°
0.382	0.477	55°
0.360	0.454	60°
0.327	0.420	65°
0.306	0.397	67.5°
0.281	0.371	70°
0.253	0.342	72.5°
0.225	0.309	75°

* Extrapolated value

Selectivity index T_v/g [info] Diagram

Selectivity index T_v/g

T_v/g	Angle of incidence
1.354*	0°
1.348	15°
1.346	30°
1.345	45°
1.340	50°
1.331	55°
1.305	60°
1.256	65°
1.219	67.5°
1.168	70°
1.091	72.5°
0.986	75°

* Extrapolated value

Transmittance Reflectance Absorptance Color rendering
Dynamic temperature simulation of a standard room

Spectral transmittance T [info] Diagram


0°	15°	30°	45°	50°	55°	60°	65°	67.5°	70°	72.5°	75°

Spectral reflectance R [info] Diagram


15°	30°	45°	50°	55°	60°	65°	67.5°	70°	72.5°	75°

Spectral reflectance, inverted light propagation R' [info] Diagram


15°	30°	45°	50°	55°	60°	65°	67.5°	70°	72.5°	75°

Spectral absorptance A [info] Diagram


15°	30°	45°	50°	55°	60°	65°	67.5°	70°	72.5°	75°

Spectral absorptance, inverted light propagation A' [info] Diagram


15°	30°	45°	50°	55°	60°	65°	67.5°	70°	72.5°	75°

Maximum temperature rise in temperature simulation (°C) [info]

ΔT_max = 12.93°C

Coefficients of functions
T_e, T_v, A_e [info]

T_e	T_v	A_e
0.014308	-0.007738	-0.83583
-0.00059831	-0.00066559	0.00064794
0.5458	0.77164	1.0845
68.204	72.212	94.272
8.7043	7.6519	5.7314
1.7802	1.2833	0.91995

Secondary internal heat transfer factor [info]

q_i/A_e(φ=0°) = 0.343

Dynamic temperature simulation of a standard room [info]

Location: ZÃ¼rich
Time period: 1. August - 10. August
Orientation of windows: South
Air change rate: 1.0
initial temperature: 20° C
Standard room: 1A [info]