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A comment on A Material That Throws Heat into Space Could Soon Reinvent Air-Conditioning. Parent comment

Re:A Material That Throws Heat into Space Could Soon Reinven... by tryingagainbro on Thursday September 14, 2017 @01:53PM (#15250594)
Also I was wondering what the effect of plain old mirrors on people's roofs would be. The point being to reflect the sunlight of course.

The sun can hit the roof all day and it will not heat a normal house...so many layers in between and the heat will not reach below.

IMO it's just a matter of time before we use the sun to offset its effects on homes and offices. A super sunny day gives us a lot of power we could use to cool what the sun is heating. They coincide perfectly for a lot of hours.

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Re:A Material That Throws Heat into Space Could Soon Reinven... by djrogers on Thursday September 14, 2017 @02:01PM (#15250687)
> The sun can hit the roof all day and it will not heat a normal house

This is completely false. An attic that's heated up to 130+* will have a significant impact on the temperature of the house it's attached to unless you use an uncommonly ridiculous amount of insulation. This is why things like attic fans are so effective in reducing AC load...

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