Thanks to all who have had input on this thread and to those who have PM's me as well. I am looking for definitive answers to a lot of questions I have pertaining to OWB and it appears that I find mostly subjective answers. I totally understand that circumstances can vary by situation but I have some questions and or concerns as a product consumer that I think an industry should be able to answer definitively. Please bear with me on the length of this post.
Why would an OWB, gasification furnace be designed to burn only dry, split, cured wood. I am curious as to what that actually means? What is a recognized method of knowing the moisture content of the wood one is burning and is there an industry standard as to what is considered dry, cured wood. Is one of those moisture meters that I see firewood dealers use when selling dried cured wood an accepted means of measuring moisture content? What is the basis for burning dry, split, cured wood and does burning wood up to say 25-30% moisture cause the firebox to fail prematurely or is it merely an issue of efficiency in that green wood uses up the heat in just drying it first? What is the standard gauge of metal used in an OWB firebox especially one that is a gasification boiler. What exactly defines a gasification OWB, is it simply forcing air into the combustion chamber such as a forge would do? I know the EPA has gotten involved in this industry and is it the standard for ALL those EPA tested, to burn only dry, split, cured wood. Are all OWB required to burn dry, cured wood and if not why?
Would a boiler the size of the one I pictured would be able to heat the same size building, on the same amount of wood that was cut, split and cured for a years heating with one of the huge outdoor wood boilers heat it for two or three years longer? Here's a several thousand dollar question, will burning wood at 20-30 percent moisture content cause a firebox or the welds to fail if burning such for a time period of 6-8 weeks? How about having an OWB sitting in a totally enclosed pole barn for a couple of years without any liquid in the reservoir causing the firebox or welds to fall in this very same 6 to 8 week time frame? What would those with experience and expertise think about a claim that a jar from a 6” tree limb striking the cabinet of such an OWB causing cracking or breaking the welds on the opposite diagonal corner inside a firebox? I’m a novice on OWB and welding but all I have heard about welds is that they should actually be as strong or stronger than the original pieces of metal joined together if done correctly?