glassdbase: Pilkington

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The independent and comprehensive database for building glass.   Methods of measurements   Glossary

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

Transmittance Te, Tv, Te/TvDiagram
Solar direct transmittance Te  [info]
Light transmittance Tv  [info]
Te/Tv  [info]
TeTvTe/TvAngle of incidence
0.4620.4990.926
0.4560.4930.92515°
0.4420.4790.92230°
0.4140.4510.91845°
0.3990.4360.91650°
0.3800.4160.91355°
0.3530.3870.91160°
0.3150.3470.90865°
0.2910.3210.90667.5°
0.2620.2900.90470°
0.2290.2540.90272.5°
0.1920.2130.89875°




Reflectance Re, Re'Diagram
Solar direct reflectance Re  [info]
Solar direct reflectance, inverted light propagation Re'  [info]
ReRe'Angle of incidence
0.0830.11715°
0.0830.11930°
0.0910.13145°
0.0990.14150°
0.1120.15955°
0.1350.18860°
0.1710.23465°
0.1980.26867.5°
0.2310.31070°
0.2720.35972.5°
0.3220.41575°




Absorptance Ae, Ae'Diagram
Solar direct absorptance Ae  [info]
Solar direct absorptance, inverted light propagation Ae'  [info]
AeAe'Angle of incidence
0.4610.42715°
0.4750.43930°
0.4950.45545°
0.5020.45950°
0.5080.46155°
0.5120.45960°
0.5140.45165°
0.5110.44167.5°
0.5070.42870°
0.4990.41272.5°
0.4870.39375°




Total solar energy transmittance g, g'Diagram
Total solar energy transmittance g  [info]
Total solar energy transmittance, inverted light propagation g'  [info]
gg'Angle of incidence
0.562*0.673*
0.5590.67415°
0.5480.66630°
0.5240.64645°
0.5110.63450°
0.4930.61555°
0.4670.58760°
0.4300.54565°
0.4050.51667.5°
0.3750.48070°
0.3410.43972.5°
0.3000.39275°

* Extrapolated value




Selectivity index Tv/g  [info]Diagram
Selectivity index Tv/g
Tv/gAngle of incidence
0.888*
0.88215°
0.87530°
0.86145°
0.85350°
0.84355°
0.82960°
0.80765°
0.79367.5°
0.77370°
0.74772.5°
0.71175°

* Extrapolated value




 
 
Spectral transmittance T  [info]Diagram

            
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]


ΔTmax = 12.63°C





Coefficients of functions
Te, Tv, Ae  [info]

TeTvAe
-0.16196-0.17652-0.58275
-0.00046731-0.000467480.0011185
0.628020.649071.0131
81.4182.01389.491
11.58811.2684.6329
1.00450.959210.98541




Secondary internal heat transfer factor  [info]

qi/Ae(φ=0°) = 0.223





Dynamic temperature simulation of a standard room  [info]

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

Diagram
 Internal temperature
 External temperature
 Global radiation on a horizontally oriented surface
 Radiation on vertically oriented glass surface


 
General color rendering index Ra  [info]Diagram
General color rendering index Ra
RaAngle of incidence
95.7
95.615°
95.430°
95.045°
94.950°
94.755°
94.560°
94.365°
94.267.5°
94.070°
93.972.5°
93.775°




Brief information

No entries



Color rendering of 8 test colors according to EN 410: φ=0°  [info]Diagram




Color rendering of 8 test colors according to EN 410: φ=75°  [info]Diagram




ab-graph (color rendering)  [info]

Diagram



Color of transmitted D65-light  [info]Diagram




Color of reflected D65-light external  [info]Diagram




Color of reflected D65-light internal  [info]Diagram




ab-graph (T, R, R')  [info]

Diagram