quote:
But your claim is full of shite. The fan cools things down and significantly lowers the temperature. I’ve shown temperature readings in the past of what it produces without ice. Clearly though… yes it’s just obviously defying the fricking laws of physics in my backyard only. You come tell me jackass

His claim is 100% accurate. Evaporative coolers require evaporation to occur for them to work. That is impacted by relative humidity. There is probably more going on with your system than you realize

quote:
Right now it’s 87° after midnight and I’m currently reading at 79° directly in front of the fan (81% humidity).

The numbers you are showing are physically impossible to achieve through only evaporative cooling. At 81% humidity, you would get roughly 3 degF temperature drop through evaporation of water alone. You may add a bit more drop through conduction if the air flows over surfaces colder than the surrounding area. It is also possible (maybe likely) that the system uses a venturi system as part of the intake for the fan. This would provide some cooling on its own and may produce a lower pressure in the water tank area thereby allowing for more evaporation.

So either you are reporting the numbers incorrectly or there is more going on than you are aware of or telling us.

quote:
With no cooler and just the fan only mode going, it’s measuring at 86°. Negligible. It’s hot 87° air.

A fan does not cool anything lower than the air it is blowing. The reason we feel cooler with a fan blowing over us is due to the air typically being cooler than 98.6, our body temp, so heat is removed through conduction. Again, this makes me think there is more than evaporative cooling going on.

quote:
Not trying to debate “physics” of something you clearly don’t have a handle on. Go study thermodynamics instead and then get back to someone else… don’t message me, cause I don’t give a shite.

Kind of read like you were but

Not sure about the guy who originally replied but I had my fill of thermodynamics hen I got my degree. It is interesting but only in small doses

Enjoy your patio, it this is working for you, who really cares why.

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Posted by habz007

New Orleans

Member since Nov 2007

3751 posts

Posted on 7/24/23 at 12:03 am to mdomingue

quote:
mdomingue

In all sincerity… Thanks for your reply.

First of all , ole “draggingass” is claiming people are getting wet in front of it. He lost me there. Wrong. Just plain dead wrong.

This guy(or gal) is full of shite.

I’m glad you brought this up. I have no reason to waste my time and lie about temperature readings to the home and garden board. But I took photos with time stamps to back up my “claim”. I knew this would come up.

I admit it’s very possible the humidity wasn’t 81% at the time. But I googled on the phone what was local humidity and that’s what I was given. 81%. I took a screenshot at that very time. Unfortunately I don’t have a way to measure it personally, but I would assume it’s close to accurate.

Most importantly , please explain with numbers and calculations how the outflow air temperature will be affected by the water temperature that’s inside the tank. It’s measurable. When the water inside hits and matches outdoor surrounding temperature, well certainly that wouldn’t be expected to cool as well. Clearly.

But there’s substantial cooling taking place when water is fresh and cool from the hose or has ice or the aforementioned frozen ice jugs inside. Straight up cold air comes out. It’s cold and it’s measurable.

How do those numbers of water temperature impact the outflow air temp readings and calculations?

TIA

This post was edited on 7/24/23 at 1:02 am

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