Homemade Air Conditioner
Intro: Homemade Air Conditioner
Before I get started, I have to give props to Geoff Milburn, at http://www.gmilburn.ca/ac/ whose plan it was I copied. I'm not smart enough to think up something like this on my own. That being said, one of the places I work has no AC, but I'm allowed to have fans, so this seemed like a good project for me. It's not perfect yet, but it does cool the air better than just a fan.
STEP 1: Attach Copper Tubing to the Fan
I took the grate off of my fan, so I could put the heat exchanger on the inside, hopefully making it look better. I'm using copper tubing as the heat exchanger, although you could use something else, as copper is not cheap, and not easy to work with. As you can see in the second photo, it's very easy to kink the tubing, in which case, you stop the flow of water. I grabbed a hole saw to use as a die to wrap the tubing around, and the teeth held nicely against the grate of the fan. As I was going along, I used zip ties to hold the tubing to the grate. Of course, because this will be inside the fan, make sure to clip off the loose ends. Also, make sure that you have both ends of the copper tubing sticking out of the fan, so you can hook up the tubes to the pump.
STEP 2: Attaching the Tubing to the Pump
Now, the cheapie pump I bought would only fit 1/2" ID tubing, and they didn't have anything that would downsize it to 1/4" for me, so I just rigged it up. As you can see in the first and second photos, 1/4" tubing fits quite nicely around the copper tubing. In the third photo, you can see how I just inserted the 1/4" into 3/8", into 1/2" tubing, which would then fit onto the pump. This of course leaked, which necessitated the use of hose clamps, photo 4. I feel that this greatly reduces the effeciency of my pump, but now I have a reason to buy a bigger, stronger, more manly pump! Either that, or buy bigger copper tubing, which is not as exciting.
STEP 3: Submerging the Pump and Testing It Out
I bought a foam cooler to hold my coolant(ice water), as I have easy (free) access to both water and ice. Once I had it all hooked up, with one tube going from the pump into the heat exchanger, and another from the heat exchanger back to the cooler, I submerged the pump and plugged it in. At this point you'll be able to tell whether or not you have leaks real quick. If you do, just shut it off and tighten things up. If you've got a hole in your copper tubing from over-zealous bending, you might have a tricky problem to solve. I didn't have that problem, so I couldn't begin to tell you how to solve it. (I am partial to JB Weld for all things broken though) I've noticed that towards the end of the copper tubing, I'm not getting any condensation, which means by the end, the water has lost it's cooling effect. When I get a bigger pump, the water will flow much faster, and hopefully won't warm up as much. Well, that's about it, any suggestions would be welcome!
293 Comments
ac-iran 3 years ago
ehensel1 3 years ago
drakonscaleon 7 years ago
You can't just throw tubing in there like that and call it a day. It's not efficient, and does about as much cold air as a seltzer bottle. You have to wind it in a coil for the coolant to actually have any effect, whatsoever.
smokefire0 7 years ago
BarbaraG76 7 years ago
untar1 7 years ago
billw129 11 years ago
CraigR12 8 years ago
Great idea, plus removing the submersible pump will help prevent the water from warming up from the pump running. The pump generates heat too and will cause the water to warm up faster!
NiqN 8 years ago
Isn't it better to use an old car radiator instead with the in built fan rotating towards you?
pictsidhe. 8 years ago
For the people wanting to cool their cars.
Make sure you have a white car, they don't get half as hot! A paint job is probably worthwhile if you are a PI and don't want to trade your car. Instead of colling your car, freeze some ice cushions to sit on, A few layers of fleece or a folded towel and it can be adjusted for the cooling you need.
arpit.bhatnagar.7 9 years ago
I made a homemade AC using 20 W motor,ice box,copper windings and all other but the effect is not coming as i expected ,i.e,the cooling effect is not MUCH as we expected from so much hard work...
PLEASE help me out of this (to increase the cooling effect) .
I covered the ice box with aluminium foil.
NalinK 8 years ago
Your work looks neat man. Here are some points...You should add coils behind the fan as well and increase the flow of water by installing a better pump. Insulating the pipes between the ice box and the fan can prevent the temperature to increase while in transfer. Also, try to shorten the distance as far as possible. Keep the fan speed low, so that the air may have sufficient time to stay in contact with the coil and become cool in the process.
:)
PIman 16 years ago
South Texas Connection 13 years ago
Swapnil242khadke 13 years ago
and if yes then does it cools as ac or not
hshah-1 13 years ago
arpit.bhatnagar.7 9 years ago
hey can u plz tel me exctly how u made it...because i made and it is not giving much temperature difference from the fan
divyang6478 11 years ago
PhilS. 9 years ago
If you can supply enough cold water, why not.....
PhilS. 9 years ago
I just said I did it in a motor home. And yep it cooled like a a/c unit. Had us looking for covers before morning...