How does the thickness of solar tempered glass affect its
A thinner glass, say around 2 - 3mm, generally has better light transmission. It allows more sunlight to reach the solar cells inside the panel, which in turn can increase the efficiency of
A glass-glass-module based on thin toughened glass on the front and back of a solar photovoltaic module can have a dramatic impact on its environmental capabilities. Johann Weixlberger* and Markus Jandl** explain.
Solar modules are getting bigger, thinner, and more powerful. But from Texas to Thailand, the same problem is appearing: broken glass. Not from hail or mishandling, but from cracks that spider from frame edges, splinter near clamps, and web across modules.
The commercial availability of 2mm thermally toughened ultra clear glass is an enabling tool for this route. Float glass as well as patterned glass with these properties is largely available along with a hermetic edge sealing, it is the choice for new PV modules. production for a glass-glass-module compared to a conventional glass-backsheet module.
As glass is the proven 'face' of a PV module, absorbing the first portion of sun radiation, efforts towards minimising this absorption are of interest. Low iron content of glass and anti reflection coatings are proven concepts; thinner glass was limited by manufacturing processes such as thermal toughening to around 3mm.
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