Until they don’t work in weather extremes.
Until they don’t work in weather extremes.
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Imagine running water through pipes from the outside of your house to the inside, and blowing air through radiators on both sides.
Well, if it was hot outside, then the water would be hot and you’d be blowing heat through the radiator inside your house, which is the exact opposite of what you want when it’s hot outside. You want cold air.
So, someone discovered that there is a way to compress and expand gasses in order to use physics for transferring heat energy, and if you used gases that were more efficient at holding heat energy than water or regular air (mostly nitrogen) then you can actually overcome the problem of not being able to remove heat from your transfer medium when it’s hot outside.
But there is only one problem with this. You have to use a lot of energy up in order to accomplish this expansion and compression of your medium.
What is worse, the more extreme temperature is outside, the harder it is to transfer heat energy out of the medium, which means you have to use EVEN MORE mechanical energy (which in this case is paid for with electricity) in order to accomplish that.