Solar glass bulk density

How much solar energy does commercial glass produce?

Base-line commercial glass has a solar transmission of 83.7%. I.e. 16.3% of the sun''s energy do not even get to the PV material. The energy loss is due - in equal parts - to reflection on the surface and absorption within the glass due to iron impurities. The density of glass is about 2,500 kg/m 3 or 2.5kg/m 2 per 1mm width.

What are the characteristics of glass for solar applications?

For solar applications the main attributes of glass are transmission, mechanical strength and specific weight. Transmission factors measure the ratio of energy of the transmitted to the incoming light for a specific glass and glass width. Ratio of the total energy from an AM1-5 source over whole solar spectrum from 300 - 2,500nm wavelength.

What is the density of glass?

The density of glass is about 2,500 kg/m 3 or 2.5kg/m 2 per 1mm width. Typical crystalline modules use 3mm front glass, whereas thin-film modules contain two laminated glass layers of 3mm each for front and back. As a result, assuming 3mm glass, 96% of the weight of a thin-film module and 67% of a crystalline module is glass!

What G-value should a Photovoltaic Glass have?

Photovoltaic glass can be customized to achieve a solar factor between 6% and 41%. A low g-value is desirable to prevent overheating, especially in warm climates, as it prevents the interior temperature from rising too high due to the greenhouse effect.