A customer of mine owns a large farm and plant nursery. The nursery consists of greenhouses and over four dozen buildings which are spread out over 300 acres. They contacted me to engineer a heating system for each individual building that is capable of burning wood pellets and coal. The farmer purchased a pellet making machine a decade ago which processes his biomass into a pellet and he is a frugal man who likes to get his full return on his investments. This is a third generation farm and he wants to make it a fifth generation farm if he can help it.
I've given the farmer several quotes, one of which proposed using Alaska 140's with the underfed stoker like an EFM. The Alaska is capable of burning wood pellets or coal but they are expensive, especially when you need fifty of them for over two hundred thousand bucks.
I've decided to build a prototype stove, small and simple, that uses a miniaturized underfed stoker that produces less than 100k btu's. I found this board in the Summer when I started doing my research and I'm looking for feedback from the many experienced folks on here. I've read many great posts from electricians, engineers, plumbers, welders and every other skill-set known to man. If anyone has a thought or comment, please type it, no impolite reply will ever come from me.