Solar glass

Model:
Price:0US$
 
 Details
 ltra white 3.2mm &4mm solar panel glass, are specially designed for encapsulation material of solar modules. The design reduces the direction reflectance and increase the internal reflection that the solar energy can be absorbed effectively. It ensures the maximum transmittance of the soar and raise the efficiency of electricity generation. The glass observes the properties of high solar transmittance, low absorbance, low reflectance, superior physical strength and significant flatness, is the ideal encapsulation material for solar thermal and photovoltaic modules. 

 

Specification

Properties

Patterned Solar Glass

Iron content

≤0.010%Fe2O3

Glass thickness

3.2mm and 4.0mm±0.2mm

Energy Transmittance Te in%(±1%)

Measurement aco.ISO9050:1990(E) and DIN67507/6.3

Factors aco.ISO9845/1(300-2500nm,AM1.5)

3.2mm glass→91.6%±0.5%

4.0mm glass→91.5%±0.5%

Surface Finish

Patterned One-sided   /FLOAT

Roughness 0.4μm-1.0μm  /0

Edge processing

Grounded edges-shiny parts are allowed

Cut corners

Maximum 3mm

Mechanical Resistance (DIN52303)

90 N/mm2

Compressive Strength (DIN1249-10)

700 up to 900 N/mm2

Fragmentation (according to EN12150-1)

Some small particles over the area 50×50mm

Shells L X W

Maximum permissible 2×1mm

Thermal resistance (EN12150)

Permanent temperature resistance up to 250 ℃

Local Thermal Resistance

Flat iron test (min.150℃ over ambient temperature)

Weight

2.5×glass thickness in kg/m2

Max/Min Sheet-Dimensions

3mm glass→max.2100mm×1660mm, min.200mm×250mm

4.0mm glass→max.2600mm×1660mm, min.200mm×250mm

Dimensional Tolerances

±1.5mm

Rectangularity

Diagonal difference max.1mm/m

Edge working

Grounded with blank spots

Corner Cuts

Max.3.0mm

Tolerances for Drilled Holes (grounded)

±1.0mm

General Bow

For 3mm glass thickness max.2.0mm/m

For 4mm glass thickness max.1.5mm/m

S-Bow and Frog-Effect is not permitted

Convex side always on top/on front

Local Bow

Max.0.35mm/300mm up to the edges 25mm from the edges for the rest of the surface →max.0.25mm/300mm

Run direction is provided by customer

Glass quality per sheet:

Test criteria(EN572-5:1994/5.1.1.1):

Viewing distance 1.5m vertical to the sheet

Parallel to a matt grey sheet at a distance of 3m in diffuse daylight

Special Bubbles

1mm unlimited

 

1-2mm

3mm

2

0

2-3mm

 

1

 

 

Longitudinal Bubbles

 

Thermal Properties

Hemispherical Emissivity

At 0°-150°(-18°- 66℃)

0.84

Expansion Coefficient

(Linear in the range of 25℃ to 300℃)

Per ℃=9.03×10-6

Per °F=5.02×10-6

Specific Heat at 32°-212°F (0°- 100℃)

0.2

Calculated Thermal Conductivity at 20℃ in (watt/m2/K)

1.04

Softening Point

1332°F

722℃

Annealing Point

1025°F

522℃

Strain Point

932°F

500℃

 

Chemical Properties

Approximate Chemical Composition:

Silicon Dioxide

73%

Sodium Oxide

14%

Calcium Oxide

8.7%

Magnesium Oxide

3.9%



 

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