Silicone gel technology
Specific PV applications
- Polar star
- Hybrid PV/T panels
- Solar concentrators
- Bifacial solar panels
- Solar street lamps
- High temperature PV panels
- Solar pumping systems
- Photovoltaic systems
Photovoltaic panels with a polysiloxane gel encapsulant for extreme climate conditions. Designed for cold artic areas with temperature down to -60 °C and hot desert areas with temperature up to 100°C
The main reason for failures of standard modules with EVA encapsulant in areas with low temperatures (below –30 °C) are cracks of solar cells and delamination of the EVA film.
The increased rigidity, i.e. reduced ability of the material to compensate the external loads by mobility of fragments of the polymer macromolecules is associated with the phase transition (vitrification) of the EVA polymer at temperature range from –15 °C (red line) to -40 °C. At low temperatures the high modulus (hard) encapsulating material fully conveys the external mechanical load to the fragile solar cells, which lose the mechanical protection.
Furthermore, the low temperature deteriorates adhesion properties of the EVA. It results in delamination of the EVA film from the glass as well as from the rear TPM protective cover. These results were published by experienced researchers in the United States (NREL), Germany (Fraunhofer Institute) and Russia.
In contrast to EVA, the new encapsulating material based on a low modulus polysiloxanes retain their mechanical, adhesion, optical and dielectric properties in a temperature range from minus –60 °C to + 200 °C.
Data at Standard Test Condition (T=25 ℃ AM=1.5 E=1000W/m2)
|2||Open Circuit Voltage(Voc)||37.0V|
|3||Short Circuit Current（Isc）||8.2A|
|4||Maximum Power Voltage（Vmp）||30.7V|
|5||Maximum Power Current （Imp）||7.7A|
|6||Temperature coefficient of the current||0.05%/oC|
|7||Temperature coefficient of the voltage||-0.31%oC|
|8||Temperature coefficient of the power||-0.40%/oC|
|9||Maximum System Voltage||1.000V|
|14||J-box, cables & connectors||Tyco|
|15||Quantity & Dimension of Cell||60 pieces 156x156mm|
|16||Front Glass Type and Thickness||Tempered, 4mm 4444mm3.2mm|
|17||Back Glass Type and Thickness||Tempered, 4mm 43.2mm|
Traxle Solar sro, Eliasova 12, CZ 160 00 Praha 6, Czech Republic, EU, email@example.com,
www.traxle.com, Tel. +420 774 994 637