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derpymcdooda t1_iv7oq28 wrote

Reply to comment by sirkilgoretrout in Researchers designed a transparent window coating that could lower the temperature inside buildings, without expending a single watt of energy. This cooler may lead to an annual energy saving of up to 86.3 MJ/m² or 24 kWh/m² in hot climates by mossadnik

Part of the issue with glass coating is the carriers that get used during production. Dimethyl Tin and Hydrofluoric acid are both extremely toxic and very common carriers. At least for Vapor Deposition Coating.

Source: work in an online coated float glass facility.

A bigger question is, imo, how finicky is that stack going to be to actually apply

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sirkilgoretrout t1_iv89gxn wrote

You mean like a post-market film install on current glass?

I’m definitely familiar with HF, but what the heck is dimethyl tin??

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derpymcdooda t1_iv89whw wrote

The coating stack. In online applications it's deposited while the glass is still hot, before annealing.

Dimethyltin Dichloride. Pretty nasty stuff, really.

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