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Building a wood fired kiln1/23
I am in the planning stages of building a kiln. I would like to use this to dry as well as sterilize wood. I am looking for information of how to set this up to utilize a wood fired boiler to heat this unit. I have a Garn 2000 which stores over 1 million BTU's of energy for on demand usage. Would this still need a dehumidification system or will the heat ex changers and fans to do the work.
Any information leading me to plans, parts, controls, sensors or general information would be appreciated.
Wood-fired kilns should be designed so that the flue gases do not go into the kiln, but the kiln air is heated via a plenum, just like we use when heating a home with gas or fuel oil.
The design further must be adequate for the species being dried. Pine kilns are not as complex as oak kilns, for example.
You can use a Garn hot water boiler to both kiln dry and sterilize lumber. The amount you can do at a time is limited by the size of the boiler and, of course, the heat coils, fans, controls and vents have to be sized to match. And the chamber has to be designed to work properly as a kiln. All this is well established and not difficult
A wood stove outside the kiln and having air drawn over it and blown into the kiln is a bad idea. You have no humidity control and use a lot more fuel, which, if you are burning wood, is more of a time hassle than an economic problem. If you can recirculate the air from the kiln over the wood stove and back into the kiln, that would be more efficient but harder to control.