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They Burn Slab Wood In Modified 1,000-Gal. Propane Tanks
We burn slab wood in modified 1,000-gal. propane tanks to heat several greenhouses on our farm. We just fit the ends of the tank with stove doors. The tanks are long enough that we don't have to cut the slabs up. Each furnace is fitted into one end of our furnace room, so we can load the furnace from outside.
    We came up with the idea after propane costs rose dramatically in recent years. We load the tanks by hand so this system is a lot of work, but it's relatively cheap and we get a lot of heat for the money. We burn the wood at night.
    We still use propane furnaces to help stabilize temperatures. The thermostatic-controlled propane furnaces are used until we get the wood furnaces loaded for the night, and take over in the morning as the wood fire idles down. The wood furnaces provide 80 to 90 percent of the heat and are also thermostatically controlled.
    There are some hazards with such a large furnace. One time fire burned the framework around the furnace, so we refitted the furnace room with a steel frame to reduce the fire hazard. (John Shirk, 16500 Gracey Creek Rd., Barnett, Mo. 65011 ph 573 378-6675)


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2011 - Volume #35, Issue #1