In sci.physics wrote:
Joseph Meehan wrote

...the very high cost of removing the moisture that comes in from outside.

That's a low cost, unless water vapor condenses inside the house.

Nick

Ummm, don't think so.

Take a given volume of air at 90 F and 40%.

How much energy does it take to cool the air to say 72 F?

How much energy does it take to cool and condense enough water to get down
to 40% at 72 F?

Let's assume the the air comes out of the heat exchanger at 40 F.

The 40 F air gets mixed with the warmer air until the overall temperature
is 72.

The cooled and condensed water goes out the drip tube and contributes
nothing to further cooling the enclosed area or condensing more water.

It's energy goes to cooling the bush growing under the drip tube.

Without running through the math, I would think getting the water vapor
out is the energy expensive part.

--
Jim Pennino

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