I read the wikipedia page and asked my dad – but I am honest: I don’t understand it.
In: Engineering
Have you ever used one of those compressed air cans? Did you notice that it got very cold if you sprayed it for any length of time?
That’s because when gas expands it gets cold, basically when it was made it got quite warm and transferred all the excess heat to the air around it so when you spray it the reverse happens.
A fridge (or an air conditioner use that principle in a loop. Gas is compressed, cooled, expanded, and warmed and then it repeats.
The warming step transfers heat from the inside of the fridge to the gas, and then the cooling transfers heat from the gas to your home (or in the case of the air conditioner from inside your home to outside your home).
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