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Does anyone out there have information on a DIY Indirect Evaporative Cooling system? Answered

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rblythe

4 years ago

This a fairly new innovation in swamp/evaporative cooling for humid areas. I would like to build a system. I have found information on building swamp coolers for dry climates, but not the indirect systems. I would appreciate any help or information.

Thank You!

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Hammerhead46rblythe

Answer 4 years ago

I don't remember the year (about 1986) but this was developed at the

ASU Arizona State University.

It was in the AZ Republic and used salt water to cool the second stage which put out air that was as cool as AIR CONDITIONED air.

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rickharrisrblythe

Answer 4 years ago

Try it an see I expect any of the evaporative coolers to work for you.

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rickharrisrblythe

Answer 4 years ago

Don't they all work the same - Blow air through or over a wet material, evaporation cools the air as much as 10 deg C.

I don't think 100% humidity would change that process as long as the air is moving.

I worked in bakeries in hot countries where they used evaporative cooling and deliberatly maintained 100% humidity.

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David Hoskins

10 days ago

I have been toying with the idea of building one of these for a while.

It would start with an ordinary swamp cooler blowing into a few feet of metal air duct. You'd line the outside of the duct with felt or similar.

That would be enclosed with misters wetting it. Now you have an exhaust fan which draws air down the length of the outside of the ductwork. About 1/4 of the cooled air would be diverted to blow back the length of the ductwork with the other 3/4 being discharged into the room to be cooled.

It's similar in concept to the homemade chryocoolers people set up to make liquid nitrogen and oxygen at home.

Obviously this is an open system and there's no refrigeration or compression but using some of the cooled air to further cool the incoming air part is the same.

If anyone is interested I could diagram it out?

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mpilchfamily

4 years ago

A Google image search yeilds many helpful diagrams that link to multiple web pages on the subject.