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Bman10119 t1_iv7f753 wrote

Reply to comment by Onequestion0110 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

How does it affect homes in places that have changing seasonal temperatures? Sure making all the homes in Florida cooler isn't bad but if the savings are going to be lost by a house further north because it still made it colder in the winter driving up heating costs then is it worth it?

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RedditTab t1_iv7jz39 wrote

Bold of you to assume we see the sun in the winter.

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Bman10119 t1_iv7mlfd wrote

I've lived in plenty of places with snow and cold winters that saw the sun in the winter :p

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ilep t1_iv80u2w wrote

Further north you go, longer the period when sun doesn't rise above the horizon. Arctic circle marks the latitude when sun doesn't rise at certain time of the year.

Just saying. So this kind of coating would not make difference as heating from direct sunlight would be small in any case.

But I would assume there would be different products for different regions like they are these days.

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JasonDJ t1_iv7sx1p wrote

Yeah…I’m in the sweet spot this time of year where the sun blasting through my glass storm door provides more heat than I lose from drafts.

Gotta love southern-facings.

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RandomLogicThough t1_iv7tkj9 wrote

I would think colder really just means more insulated which is better for heating or cooling

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aldhibain t1_iv8ixnw wrote

The article states that they're trying to cool the building by radiating heat in addition to reducing the heat that is coming in.

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RandomLogicThough t1_iv8j4px wrote

I feel that would also stop heat from getting out. I'll look at the article...sometime....

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