I love evap in utah, amazing how much energy we have saved vs traditional compressor based cooling.
There are some neat systems out there that cool the air with evap via a chamber but don’t mix the humidity, pretty sure brand is coolerado or something like that. Here we have massive 10 foot “wetwalls” and they are pulling in 20k CFM with nearly 30 deg drop in air temps, but need to have matching exhast fans to get the air right back out or it gets too humid. From: AF <[email protected]> On Behalf Of Chuck McCown Sent: Sunday, August 10, 2025 8:21 PM To: 'AnimalFarm Microwave Users Group' <[email protected]> Subject: Re: [AFMUG] OT Evap coolers The only issue with minerals in the water is the build up on the pads. But those are a consumable. Just change them every year, clean out the accumulated minerals from the sump and they last for a very long time. There are 2 and 3 stage machines that don’t even circulate the air that has been exposed to the water. From: AF [mailto:[email protected]] On Behalf Of Ken Hohhof Sent: Sunday, August 10, 2025 1:28 PM To: 'AnimalFarm Microwave Users Group' <[email protected]<mailto:[email protected]>> Subject: Re: [AFMUG] OT Evap coolers Didn’t they used to have swamp coolers for cars? As far as houses, I know some people with well water have reverse osmosis systems instead of water softeners, maybe that could give you the mineral free water you need? From: AF <[email protected]<mailto:[email protected]>> On Behalf Of Bill Prince Sent: Sunday, August 10, 2025 1:49 PM To: [email protected]<mailto:[email protected]> Subject: Re: [AFMUG] OT Evap coolers In the central valley of California; places like Fresno, Modesto, Merced, etc. , and places like Tucson and Phoenix in AZ. Those are all places it is hot and dry, and prime places for what we call swamp coolers; devices that depend on evaporation to cool a set of coils. Much less expensive than AC, and if the humidity is low, they work very well. bp <part15sbs{at}gmail{dot}com> On 8/10/2025 10:35 AM, Robert wrote: Living in the high desert, I have wondered why builders haven't offered options for integrating Evap coolers into the designs of the houses. The biggest issue is the design of the sheets that the water sheds through and the chemicals that are deposited. That doesn't seem like it would be that hard to engineer. Something that purifies the water first and has a changeable element like the water purifiers for drinking water. Once a month change a $10 cartridge and reduce your electrical bill by somewhere around 50-70% and increase the humidity to a more livable level. I guess change is hard. I ran one of the box coolers into a window for a few years but the water issues were a pita. If the boxes had built in water purifiers that would have been a non-issue. The systems really needed to be taken up a notch to make them really a good solution. On 8/10/25 9:50 AM, [email protected]<mailto:[email protected]> wrote: OAT temps high 90s Here is IAT of my shop in the welding and work spaces. (Have AC in the office areas). I have them (3 huge ones) on timers. They kick on about 7:30 each week day morning. You can see the humidity take a vertical jump when they come on. IAT tracks OAT but the coolers make the slope of the line much less. [cid:[email protected]]
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