DIY AC

[rriverstone]

I would vent the humid, cooled air inside the trailer, too.
Solar powered fans, pond pumps are cheap.
Bet i could make the whole thing for forty bucks with no drain on my power system.
I'd put screened, vented housing over pad box to discourage bugs, dust.

 

[bullfrog]

Been there done that, it does feel cool directly in front of the air flow. I the dry desert where it works best it uses about 5 gallons of water in 6 hours. In a very small well insulated space (no windows and a small vent in the ceiling) with more solar panels than you have space to mount most likely it will lower the temperature 10 to 20 degrees. In less than perfect conditions you will feel the cool air a couple feet away directly in front of it while sweat runs down you back. It takes up too much space, requires too much power and water for too little gain. Finding a shady spot with a spray bottle or wet tee shirt is much more productive in my opinion. On grid power with running water stationary might be worth it but a small AC would be much more effective and easier in that situation. Most people in the southwest have stopped using water to cool with and gone to efficient ACs.

 

[rriverstone]

That's why i'd vent moist air inside.
Wont be on solar system. Said i'll be using pumps, fans with own solar power.
My roof, walls all shaded, never hot to touch.
Walls, ceilings insulated with Styrofoam, Mylar, black out curtains made of quilts.
False floor basement, carpeted.
I've been living in New Mexican desert 15 years now.
Also, video stated he got <10% water loss.
That's why i want heat transfer system. Keep all moisture inside.
Takes <2 sq. ft., portable.

 

[bullfrog]

Take pictures and let us know how it works for you. Results may vary! Lol!

 

[jonyjoe303]

It will work, I actually built a demonstration unit last summer here in southern california due to the hot weather. The results were good but the only drawback is it takes up alot of space inside my van.

If used inside a vehicule it needs to be built more sturdy and I would not use the blue durakool evaporator pad, it clogs up after several months and restricts airflow. One more thing, he got cool temp outputs because the outside air going into the evaporator was cooler, in a vehicule because of the heat of the vans metal body, the air temp will be higher, water temp will also be higher.

Right now I'm still using my swampcooler, water usage hasnt been bad, 1 gallon total water usage over a 2 day weekend.

I'm building a smaller all in one unit indirect/swamp cooler, when completed I'll post pictures and temp results. If I can get 2 or 3 degrees lower air temperature it will be worth it. On a hot day you can feel it.

Heres a picture of the indirect cooler (heat exchanger) I built last year, this was just a test, but notice all the space it takes up, the actual evaporator pad was about 5 feet away and it also took up more space. 



In my design I use the heat exchanger to cool the outside air which was 115f, which got cool down to about 102f, then that air went to the evaporater pad which cooled it further to about 90f,  the water temp remained a constant 86f. Those are real life temps you might see in a hot vehicule on a very hot day. 90f seems high but on a hot day it feels good.

 

[rriverstone]

It's a climate room in a 25' TT.
And, again, won't be using any outside air.
Thanks.
Yeah, i' just trying not to die.
I'm not a nomad.
I'm mobile homeless.
Can't afford rent.
Refugee from end stage capitalism.