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
0.4620.4990.9260░
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░
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░
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

            
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]


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
95.70░
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