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.

Air Dryer

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.

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

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 studied this at school)

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.

Air Dryer

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.

Air Dryer
Air Dryer

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.

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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.

come back
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5+two=
Comments (11)
  1. MrRolling
    #1 MrRolling Guests 12 February 2016 12:36
    0
    1. Any air conditioner dries the air; no additional functions are needed for this.
    2.At your device Very low performance.
  2. Gregory
    #2 Gregory Guests 16 February 2016 21:55
    1
    I experimented with this device for a long time and in my opinion the author overestimated the volume of collected liquid by ten times!
    1. Guest Vladimir
      #3 Guest Vladimir Guests 26 October 2021 20:22
      0
      Depends on the region of residence and time of year, humidity can vary greatly
  3. Eugene
    #4 Eugene Guests 16 April 2016 23:31
    2
    The productivity may be low, but several such devices can be made, given their low cost. I want to install one of these in my car, the windows sweat when it rains. The idea is great.
  4. Sergey
    #5 Sergey Guests June 2, 2016 03:13
    2
    I agree with Gregory. I fiddled around for a very long time, tried different elements, a bunch of radiators of all sorts of shapes and sizes - nothing.The temperature on the “cold part” dropped to +4 (if you install a small radiator) - when working for about 3 hours - the result is a few drops of water. If you install a larger radiator (according to the author, there should be frost if the size is large), the temperature does not drop below 12-14 C. In general, I will buy a factory dehumidifier
  5. Grey
    #6 Grey Guests 23 June 2016 23:20
    0
    I would make one for myself, or maybe I will, because there’s simply no room for a normal dehumidifier, and it’s stupidly impossible to dry clothes in the bathroom until they’re wet; it takes a week to dry
    The author clearly misinterpreted that 2 liters in 12 hours unless he tested it over boiling water wink
  6. Andrey
    #7 Andrey Guests 8 August 2016 16:56
    1
    Grey,
    There was a similar problem. I decided to use a suspended ceiling made of plastic panels with built-in lamps - 4 pieces and 4 coolers 12 cm. The coolers are switched on 2 pieces in series, they work quietly. 2 blow up, one down and one pulls into the vent. A full drum of laundry dries overnight.
  7. INOX
    #8 INOX Guests 11 October 2016 11:58
    1
    He overestimated, he didn’t overestimate, maybe his ax can be hung from the humidity.
  8. Alexander
    #9 Alexander Guests 29 January 2017 19:34
    7
    I respect the author for being straight-armed, even though he embellished the performance. My dehumidifier is a 60W Peltier, hot radiator 100x125, cold 100x72, cold radiator temperature from +4 to +6. Collects 200 ml per day at 60% humidity and 20 degrees.
  9. Igor Kirpichev
    #10 Igor Kirpichev Guests 24 November 2017 16:17
    0
    Gentlemen, who is the author of this product?
    1. Denis
      #11 Denis Guests 24 November 2017 16:21
      4
      Why do you need it? It's me. Yes, I exaggerated a little with the water, I agree, if that’s what you’re talking about...