Air Dryer

Often, when walking through consumer electronics stores, I noticed such a device as a humidifier and never saw a dehumidifier. Someone will now say that almost any air conditioner has such a function as an air dehumidifier. In everyone, but not in everyone. But not everyone can always afford air conditioning. Moreover, the air dehumidifier that 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 can be such humidity at home that mold appears on the walls.

What do you need?

So, the dehumidifier that I built consists of almost three parts: two radiators and Peltier element. I think most avid gamers who love to upgrade their computers to madness are familiar with it. In a nutshell, this device, when current is applied to it, begins to emit cold on one side and heat on the other. On the one hand, we will fight the heat by blowing on the radiator from the cooler. On the other hand, there will be cold - that’s what we need.

Let's get started. Let's prepare the following: a radiator with a cooler, a second radiator smaller, Peltier element, thermal conductive paste (can be bought at any computer store) and a couple of screws to tie the structure.

Making your own dehumidifier

First of all, I drill holes in the radiators - in the second radiator the holes are slightly larger. Next I take Peltier element and I smear its sides with thermal paste on both sides. Apply a thin layer, otherwise the paste will squeeze out too much. I put the smeared element between the radiators and twist it with self-tapping screws. If you repeat the design, twist it carefully, without fanaticism, otherwise the element will crack.

All! Now we attach our dehumidifier somewhere and place a vessel below to collect the liquid.

We connect the cooler in parallel with the element and apply a voltage of 12-15 volts. If a small radiator begins to heat up, change the polarity element.

For clarity, I connected a thermometer and it shows that the temperature very quickly dropped to 6 degrees. After some time, 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 would like to note that the size of a large radiator should be chosen from the formula: the larger, the better. But you need to take a small radiator that is 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! That's quite a lot.

I used this design as an air dehumidifier, but you can use it as a refrigerator by installing it in a case, or find your own application.