AIR DRYER

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Often, when I was shopping in consumer electronics stores, I noticed such a device as a humidifier and never saw a dehumidifier. Someone will now say - in almost any air conditioner there is such a function as an air dryer. In everyone, but not in everyone. But not everyone can always afford air conditioning. Moreover, the air dryer, which I will tell you about today, has a number of advantages, one of which is noiselessness. I needed a dehumidifier for my ground floor apartment. There is such a humidity at home that even mold on the walls appears.
So, the air dryer that I built consists of almost three parts: two radiators and a Peltier element. I think most avid gamers who love to pump their computers madly are familiar with him. If in a nutshell - this device, when a current is applied to it, starts to produce cold on one side and heat on the other. On the one hand, we will fight with heat by blowing a radiator out of the cooler. But on the other hand it will be cold - we need it.

Let's get started. We’ll prepare the following: a radiator with a cooler, a second radiator smaller, a Peltier element (anyone interested — here), heat-conducting paste (can be bought in any computer salon) and a couple of screws for screed construction.
First things first, I drill holes in the radiators - in the second radiator, the holes are slightly larger. Next, I take the Peltier element and smear its sides with thermal grease on both sides. Smear with a thin layer, otherwise the paste will squeeze out strongly. I put the smeared element between the radiators and twist the screws. If you repeat the design, then twist carefully, without fanaticism, otherwise the element will crack.

All! Now we fix our dehumidifier somewhere and put a vessel for collecting liquid from below.
The principle of operation of the device is very simple - the side is cooled and moisture in the air condenses on it. I hope you are not a boy of five years old and you passed this school)
We connect the cooler in parallel with the element and apply a voltage of 12-15 volts. If a small radiator starts to warm, we change the polarity of the element.

For clarity, I connected a thermometer and it shows that the temperature very quickly dropped to 6 degrees. After a while, the radiator began to fog up and condensation began to drip. After 15-20 minutes of operation, the temperature dropped to 4 degrees Celsius.

I want to note that the size of a large radiator should be selected from the formula: the larger the better. But the small radiator needs to be taken not very large, otherwise the temperature on it will be below zero and all the moisture on it will turn into ice and freeze, and this is not good.

With 12 hours of operation of this device, I collected about two liters of water! This is quite a lot.
I used this design as a dehumidifier, you can use it as a refrigerator by installing it in a case, or find your application.

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