air condition project

So, what do you have so far. Tell us what preliminary work you have done. What are the goals of the project. Are you a student?

i am a college student i have already started manufacuring the air cooler i have use the same refregeration system in the water cooler to cool the water then the cold water pumped to a heat exchanger where a fan pushes the air through the heat exchanger .my question is where should i place the fan infront of or at the back side of the exchanger to get maximum cold air flow ? will this design works to do i have to modify it ?

? please advice

The position of the fan is called Draw through vs. Blow through. This is a common option when ordering air handling units. Draw thoughs put the fan heat back in the air after the coil, which may be desireable for a little free reheat dehumidification. The draw through will suck more heat out of the cooling fluid (better efficiency, but less latent capacity). Then you have noise issues to compare. Do you want more noise in the supply duct or the return duct? My answer would be put the noise in the return, and line the duct with insulation. Then you have your cooled water from the water cooler. This would be called Chilled Water (CW) in the AHU world. A water cooler will typically drop the water temperature by about 30 degrees. So if you supply 90 degree water, it can make 50 degree water. You need about 45 degree water in order to make good condensate at your coil. You want to cool and dehumidify. Measure your CW temperature and adjust the GPM so you get 45 degreee water temperature. This will give you good performance for your project.

Commercial portable A.C units are available in the market. You can buy any one of the model and use it. For any specific applications you have to provide more data to design.

I think he means for cooling a tent or vehicle easily. You can get a thermoelectric refrigeration system like is used to cool 12 volt coolers in any size now, but they are expensive and use a lot of power.

You can get a cooler full of ice water ( with a screen to filter in only the water ) and circulate it through hoses to a heat exchanger/radiator in front of a fan. I did this with a pizza delivery car i used to drive that had no a/c. Cooler full of ice water in the trunk,Ice supplied by the pizza places icemaker. lines to an old small car radiator and fan up front.

run a piece or 2 of metal pipe or ductwork through a cooler full of dry ice and blow air through the tubes. Tried this one,too. The summertime moist louisianna air went into the pipes, and in a few minuits, snow was blowing out the other end and clogged up my fan. Worked better when i used the fan to push air, instead of draw it. but i still had to let it thaw out from time to time., lol.

Then you can get into adsorption cooling with charcoal and methanol, or absorption cooling, as in the crosley icyball, using anhydrous amonia.

Or take out a cars air conditioning system, and spin the compressor with somthing else, like a windmill, water wheel, electric motor, lawnmower engine,etc.

Or take a window air conditioner and convert it to run on an automobiles a/c compressor, turned with somthing else.

what do you want to cool off?

And how much do you want to spend.

these options should keep you busy for awhile.

I saw something pretty low cost and low tech on a survival show. It was a 48 quart cooler with a high power computer fan mounted at an intake in the lid. The fan was powered by a portable solar panel. The cooler was about 1/3 full of water with a large spunge dipping in the water and sealing the fan side of the cooler from the discharge side. There was a 4" flexable duct coming out the top of the opposite side of the cooler from the fan. This only works in a dry climate. They used a laser temp gauge and measured the ground at 84 degrees (F), and the discharge air at 64 degrees.