glassdbase: Velux

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Velux: 60E

(int) 6mm laminated, 14mm 95% Krypton, 4mm tempered V8:N2 (ext)
Velux

Reference number: X005

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
0.378	0.695	0.544	0°
0.374	0.692	0.541	15°
0.365	0.685	0.534	30°
0.344	0.660	0.522	45°
0.332	0.642	0.517	50°
0.315	0.615	0.512	55°
0.291	0.573	0.507	60°
0.257	0.511	0.503	65°
0.236	0.469	0.502	67.5°
0.211	0.421	0.501	70°
0.183	0.366	0.500	72.5°
0.153	0.306	0.501	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
0.329	0.340	15°
0.331	0.345	30°
0.344	0.364	45°
0.352	0.374	50°
0.366	0.392	55°
0.385	0.417	60°
0.415	0.455	65°
0.438	0.480	67.5°
0.464	0.512	70°
0.493	0.546	72.5°
0.521	0.582	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
0.296	0.285	15°
0.304	0.289	30°
0.312	0.292	45°
0.316	0.294	50°
0.319	0.293	55°
0.325	0.292	60°
0.328	0.288	65°
0.327	0.284	67.5°
0.325	0.277	70°
0.324	0.271	72.5°
0.326	0.265	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
0.412*	0.510*	0°
0.409	0.507	15°
0.400	0.500	30°
0.380	0.480	45°
0.368	0.469	50°
0.351	0.451	55°
0.328	0.427	60°
0.295	0.391	65°
0.273	0.368	67.5°
0.248	0.340	70°
0.220	0.309	72.5°
0.191	0.277	75°

* Extrapolated value

Selectivity index T_v/g [info] Diagram

Selectivity index T_v/g

T_v/g	Angle of incidence
1.689*	0°
1.695	15°
1.710	30°
1.736	45°
1.744	50°
1.750	55°
1.748	60°
1.732	65°
1.718	67.5°
1.697	70°
1.661	72.5°
1.605	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 = 10.86°C

Coefficients of functions
T_e, T_v, A_e [info]

T_e	T_v	A_e
-0.049074	-0.11013	-0.75979
-0.00044876	-0.00038408	0.00058198
0.64889	0.89764	1.0268
73.117	75.954	92.657
9.6378	8.6165	3.5315
1.5119	1.112	0.98024

Secondary internal heat transfer factor [info]

q_i/A_e(φ=0°) = 0.115

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]