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Humidifying large space to control wood moisture problems

11/14/14       
Scott Peterson Member

I am looking for some suggestions for ways to add humidity to our shop areas. We have thousands of square feet spread over several rooms. We have steam heat and a large boiler, so we had tapped into this before and just had some solenoids that allowed steam to be discharged when the modines came on. This was abandoned mostly because there were issues with drops of water leaking or spraying out along with the steam at times. Should we go back to this, or does anyone have another low tech way to humidify large spaces? What about those portable fans normally intended for summer evaporative cooling? Thanks.

11/14/14       #2: Humidifying large space to control ...
Don Lewis

Website: http://www.nyle.com

Those kind of atomizers with fans can work. More common is to have a pump that pumps water to high pressure and then atomizes it with nozzles spread around the plant. Sometimes people use compressed air to help atomize the air. These systems are not expensive but a lot better than using steam from the boiler. If you use steam from the boiler, you should blow it down each day that you spray. But the important thing is to minimize exhaust from the space and make sure all the surfaces stay over the dew point.

11/14/14       #3: Humidifying large space to control ...
Gene Wengert-WoodDoc

It is often easier to inject the steam into a chamber and then exhaust this damp air into a room, rather than inject the steam directly into the room's atmosphere.

In most cases, the best condition for a shop is 35% RH as this's is very close to the final conditions in use. A higher RH often minimize manufacturing issues from slightly wet lumber, but actually the high shop RH just postpones problems until the product reaches the customer's dry climate. Ok?

11/14/14       #4: Humidifying large space to control ...
Gary

In my 9000 sq. ft. I use a couple of humidifiers from DnB Humidifiers. I found them at IWF or AWFS a few years ago. They hang from the ceiling look like little space ships. They only need a 110 volt outlet and a 1/4" water line run to them. They do need to be cleaned out about twice a year but other then that they work great. I just googled them and easily found their website.

11/27/14       #5: Humidifying large space to control ...
woodhog

cheapest and best way is to just fill a couple of 55 gallon drums with water--put a wide board on a slant with some cloth rags attached and it will act like a moisture air wick--can regulate the humidity by standing the board up so the rags are out of the water


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