To express my misery in figures I once tried a humidity meter:
After showering the humidity goes up to 85-90%. After 10 minutes, airing this goes quickly to 55-60% down, wenns cold outside is also happy to 48%, because the heated cold air from outside is very dry and can absorb a lot of water.
Stupidly, 75-80% are quickly reached because the water out of the towels and the drops nourish the humidity on the walls.
So I got myself this dehumidifier, which is to bring about the day the water from the air. The 200ml per day, which can be read here in the reviews, listened to not bad.
The Device:
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The dehumidifier is small, sufficient quiet and easy to operate and in addition looks nice from. He doesnt have a controller with which one could set a target humidity at which it issues itself, you can turn him unfortunately only on and. This shortcoming can, however, be resolved in a humidity-controlled socket switches.
The tank has a capacity of 450ml and the dehumidifier automatically turns off when it is filled.
Inside operates a Pelitier element, each with a a heat sink on both sides. Behind the front ventilation grille is it a bare heatsink on the rear side an even larger heatsink with a fan. This sucks the air through the grille in front, to the cold heat sink past (where the water from the air condenses there) and then blows the air through the hot heat sink.
The air then passes up and out again. Funnily enough, the outlet grille is still a dust catcher. He actually makes no sense, because the dust already collects previously yes at the heat sinks and reduces over time the performance of the device, as already have posted here some reviewers. I blow the device therefore regularly with a can of compressed air.
The cold heat sink is already at 20 ° room temperature down to almost 3 ° C. No wonder that the dehumidifier as some reviewers write at 16 ° practically nothing gets out of thin air: The condensed water freezes and insulates the heat sink. The ice drips of course not in the tank. Thus, the dehumidifier is reasonable can only be used at room temperature. In the basement one would additionally heat up what actually has to happen anyway. Somewhere has to come in the walls so the energy to evaporate the water.
Power requirements
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The actually pretty hot expectant power supply has 9V and I measure the energy requirement of the device with 26 watts. So far so good, as you can live with.
Dehumidification
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In the reviews, some very wiedersprüchliche information have been made to the performance. This is of course to the different conditions. The higher the humidity, and the higher the temperature the more water is in the air (and the more can be taken out!). Thus my full 22 ° and 70% -90% relative humidity is thus rather a Kanidat for a measurement result in maximum power.
I once measured two months, how diligent is my small dehumidifier in continuous operation without a break. I have noted, when the tank was full with 450ml and calculates the daily output. Here is the result:
Date ml / day
13.01.2012 23:00
18.01.2012 06:00 4.29 105
21.01.2012 17:00 3.46 130
25.01.2012 08:00 3.63 124
28.01.2012 17:00 3.38 133
01.02.2012 15:00 3.92 115
06.02.2012 09:00 4.75 95
10.02.2012 18:00 4.38 103
14.02.2012 20:00 4.08 110
17.02.2012 20:00 3.00 150
21.02.2012 18:00 3.92 115
24.02.2012 18:00 3.00 150
27.02.2012 15:00 2.88 157
01.03.2012 08:00 2.71 166
03.03.2012 23:00 2.63 171
06.03.2012 08:00 2.38 189
09.03.2012 18:00 3.42 132
13.03.2012 15:00 3.88 116
16.03.2012 11:00 2.83 159
Power in the Middle ie 134ml / day. At 26W consumption eats the small 0,6kwh day, which is below my terms of consumption per liter of air Brought water at a whopping 4,8kwh per liter of water. This is extremely much. My now purchased Duracraft DD TEC10E obsolete for grade times 1,3kwh 2.5l water from my washing. However, the laundry is naturally more grateful than a bathroom, because the clothes drying the humidity at 70-85% is due to the permanent water replenishment. For the same application in the bathroom of the DD-TEC10E needs estimated 1/4 to 1/5 of the current for the same amount of water.
The results are so very different, but the output humidity and temperature are not always equal. I have always lifted after showering for about 10 minutes, and after that just is sometimes more, sometimes less water in the air. Perhaps the heating was not always set the same.
Well, what does this mean now for the humidity in the room? Honestly little. I'm at 68% after the airing to work and come home in the evening and there are 70%. Apparently give the towels and the room at the same rate as water from the dehumidifier removes.
In the 10h, I'm not at home, the dehumidifier in the Middle brings to my measurements 56ml from the air. What makes that?
On the Internet there are practical online calculator to determine the water content in the air. (-> Google)
There you can calculate online how much water is in which humidity in the room.
For my bathroom (9,75m³) comes out:
At 22 ° C and 90% relative humidity are a total of 174ml of water in the air.
At 22 ° C and 55% relative humidity are a total of 106ml of water in the air.
That means I have to get (the Wassernachlieferung the towel and the walls times disregarded) 68ml water from the air in my bathroom, in order to reduce the humidity from 90% to 55%.
The 56ml, which creates the dehumidifier in 10h should, theoretically suffice to get the space from 85% to 55%.
But it happens hardly what the humidity is probably just my towel and the walls a little drier. When I compare my towel before and after showering, which is already much more difficult, I would appreciate so as 100gr, ie 100ml. My friend also takes a shower, so 100ml again. On the walls / floor safe again 200-400ml, depending on the spreading factor. Thus we are talking of at least 500ml who have to go. The dehumidifier is therefore too small even for my small bathroom of 4sqm. For that I need at least a dehumidifier with 800ml / day in the normal bath operation.
Compared with airing
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If you compare the dehumidifier times with other methods, he comes off badly.
With 10 minutes of airing (when it's cold outside) I get the humidity in the short term by 90% to 48%. So I have with ONCE airing (at no cost) 82ml water geholt- out of the room for the same amount needs the dehumidifier on average 15h and consumes 0,4kwh. So 4x 10 minutes (or done by a fan / hair dryer with cold position also significantly shorter) airing one creates almost twice the real daily output of the dehumidifier. For my application, the device, even with such a small bathroom, inferior to the simple airing hands down.
What is he actually use to?
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-If You can not airing in the bathroom, he can be a help. But a normal 2-person shower operation he sure manages not to get too much water added daily. He may make a one-person household, if the walls are dried using a puller after showering, when as much water wipes his hands on the body, so that the towels not so wet toilet seat always down (not so small water surface and thus humidifier, a toilet) - then he could cope with the situation.
-I Still use him if I'm not a weekend there once. Then I can not airing in the evening, and 80% humidity for 3 days is good for the mold. Without the daily supply of water he gets the moisture in 3 days down noticeably.
- The laundry in the summer is dry in humid days difficult. Therefore, I initially asked him to wash in the interior. Something he brings here, though almost imperceptibly. In 5kg laundry are after spinning still 2,5-3l water. Of this brings the dehumidifier in 3 days 0.5l out-not enough, but some. The costs then however 1,8kwh. Meanwhile, I used to dry my cheap monoblock air conditioning. The consumed in drying mode 230W, has the laundry but also in 4h dry (you can warm exhaust hose draufhalten beautiful, prima works) at 1 kWh consumption.
- If you have a wet room where there is not much water replenishment, he does certainly good services.
Conclusion
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For those who like to have convenient and do not want to dance so often to the window, this dehumidifier is little to nothing. As already such a> 1l / 24 compressor dehumidifiers must be found. At temperatures So I really think of any other applications for a meaningful use. Better invest 100 for Kompressorentfeuchter.
Update: For the past 9 months, I use a Duracraft DD TEC10E. This lowers the humidity in less than an hour to tolerable values and then turns off. He allows himself although 200W power if it is running, but he uses this much more effective. He needs only 1/4 to 1/5 of the current to the same amount of water to get from the air as the little Elro. Thus, one has the additional price for a Kompressorentfeuchter within two years through lower energy costs out again. The DD-TEC10E also sufficient completely to dry in 5h 5,5kg linen grade 1,3kWh times.
Update II: For my bedroom I've still got another Kompressorentfeuchter. Since the DD-TEC10E is sometimes just 60 more expensive I have this time resorted to TROTEC TTK 25E. The is a lot smaller than the Duracraft, but of course much larger than the Elro. You can not adjust as accurately as when Duracraft, and he has no humidity indicator, but I have only paid twice as much for what little Elro costs just the humidity. Is definitely well recommended.
