glassdbase: Pilkington

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Pilkington: Optifloat Grau T 4 mm / Optifloat 6 mm

4 mm Optifloat Grau, SZR 16 mm, 6 mm Optifloat
GDB Referenzglas
Pilkington

Reference number: H017

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
0.462	0.499	0.926	0°
0.456	0.493	0.925	15°
0.442	0.479	0.922	30°
0.414	0.451	0.918	45°
0.399	0.436	0.916	50°
0.380	0.416	0.913	55°
0.353	0.387	0.911	60°
0.315	0.347	0.908	65°
0.291	0.321	0.906	67.5°
0.262	0.290	0.904	70°
0.229	0.254	0.902	72.5°
0.192	0.213	0.898	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
0.083	0.117	15°
0.083	0.119	30°
0.091	0.131	45°
0.099	0.141	50°
0.112	0.159	55°
0.135	0.188	60°
0.171	0.234	65°
0.198	0.268	67.5°
0.231	0.310	70°
0.272	0.359	72.5°
0.322	0.415	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
0.461	0.427	15°
0.475	0.439	30°
0.495	0.455	45°
0.502	0.459	50°
0.508	0.461	55°
0.512	0.459	60°
0.514	0.451	65°
0.511	0.441	67.5°
0.507	0.428	70°
0.499	0.412	72.5°
0.487	0.393	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
0.562*	0.673*	0°
0.559	0.674	15°
0.548	0.666	30°
0.524	0.646	45°
0.511	0.634	50°
0.493	0.615	55°
0.467	0.587	60°
0.430	0.545	65°
0.405	0.516	67.5°
0.375	0.480	70°
0.341	0.439	72.5°
0.300	0.392	75°

* Extrapolated value

Selectivity index T_v/g [info] Diagram

Selectivity index T_v/g

T_v/g	Angle of incidence
0.888*	0°
0.882	15°
0.875	30°
0.861	45°
0.853	50°
0.843	55°
0.829	60°
0.807	65°
0.793	67.5°
0.773	70°
0.747	72.5°
0.711	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 = 12.63°C

Coefficients of functions
T_e, T_v, A_e [info]

T_e	T_v	A_e
-0.16196	-0.17652	-0.58275
-0.00046731	-0.00046748	0.0011185
0.62802	0.64907	1.0131
81.41	82.013	89.491
11.588	11.268	4.6329
1.0045	0.95921	0.98541

Secondary internal heat transfer factor [info]

q_i/A_e(φ=0°) = 0.223

Dynamic temperature simulation of a standard room [info]

Location: ZÃƒÂ¼rich
Time period: 1. August - 10. August
Orientation of windows: South
Air change rate: 1.0
initial temperature: 20° C
Standard room: 1A [info]