ST Alpha - "well, air conditioning generally works either by vapour compression or evaporation, so I'm guessing that having water on hand makes cooling air easier" (Reading a Post)

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In response to "STIS is it easier to cool humid air or dry air? or is it the same? -- nm" by Pippy

well, air conditioning generally works either by vapour compression or evaporation, so I'm guessing that having water on hand makes cooling air easier

Posted by mafic Jul 2 '12, 15:01

but the air doesn't necessarily have to be humid.

Responses:

but it also takes quite a lot of energy to change the temperature of water, so if you have a cooling system on hand, dry air would be easier to cool, - mafic Jul 2, 15:08 4
- isnt an evaporator cooler used in dry, not humid, areas? -- nm - tRuMaN Jul 2, 15:23 1
  - Yup. But that takes advantage of the energy lost by the hot, dry air to evaporate the water with the end result being cooler more humid air - JD Jul 2, 15:30
- short answer: humid air: difficult to cool, stays cool longer, dry air: easy to cool, heats up quicker. -- nm - mafic Jul 2, 15:10 1
  - wow, did not know this. -- nm - loosilu Jul 2, 15:33
But the compression cycle is a closed loop of another stuff that runs independent of the air to be cooled -- nm - JD Jul 2, 15:06

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