Energy Free Cooling through Physics
Does this video just describe UV coating glass with extra steps? It does apply to other materials, which is wildly different, but for glass, it just sounds like a more complicated way to UV coat it. https://www.youtube.com/watch?v=2iwXdGxyzYw
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I understand that it's a cofusing video. The 'now with ray-tracing' animations are unhelpful. Start here: en.wikipedia.org/wiki/Infrared_window aerohead and I engaged on this in the absorption AC thread from Permalink #11 to #25. In preparing this response I learned that there are three atmospheric windows. IR is the one in question, between 8 and 14 μm. aerohead's objection was that there are more gases than CO2 and water vapor. Turns out that ozone is third most impoortant. Anyways, to answer your question, no -- not just glass. Ultrawhite paint with [IIRC] barium phospate pigment works; and there is SkyCool. www.skycoolsystems.com/technology/ and their Dual-mode Film. Seven alternating layers of sputtered coatings IIRC. |
I read ther news today, oh boy....
phys.org: World's whitest paint now thinner than ever, ideal for vehicles Quote:
Then Turtlewax protective coating with graphene for a hydrophobic surface. |
Read the news, or listened to The Beatles?
So it's more than 3x thicker than normal color coat? Maybe we should mandate white cars by law, you know, to help the global warming. What part of sunlight causes the most warming? I'd expect infrared, but I never thought to ask before. Clear coats absorb UV, so if that causes warming then that's no good. |
let's ask DDG: duckduckgo.com/?q=energy+in+sunlight+spectrum&ia=web
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UV
http://https://www.google.com/search...QxsUjvcJt5gWBM
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UV flux would still intercept the material, but the amount of infrared radiated to the individual would be mitigated to some degree. What's seldom mentioned is that, global warming increases evaporation, raises relative humidity, and the heat index, and it's the heat index that's killing people. And simply lowering the dry-bulb temperature of humid air actually 'INCREASES' the relative humidity, as the air moves closer to 'saturation', making it it even more uncomfortable or deadly. Only refrigeration can take the moist air below dewpoint, and condense out enough water vapor to bring the enthalpy of the air to within the limits of human comfort. Any air conditioning contractor can provide a 'psychrometric' chart, used to engineer heating and cooling systems. They're available online as well. |
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desiccant
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It's kinda like that gas-fired, 500-degree F heat required to regenerate the activated charcoal used to remove VOCs from water at the waste treatment facility. |
Still waiting on Tesla's home air conditioner that produces potable water.
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