Wood Stove Heat Storage Tank ENERGY Wood Burners (65) 27-5-28 A New Hampshire-based company has hit on a new way to make wood-fired furnaces more efficient. The idea is to heat water in a large insulated water tank and then pump that water into the house or shop as needed. The advantage is that it lets you run your wood furnace at full capacity and capture all the heat. The tanks, which range in size from 400 to 1,500 gal. in size, contain two heat exchange coils connected in parallel. One set of coils heats water in the tank. The other set picks up heat from the tank to carry into the house. A third coil can be used to heat domestic hot water. "Because of the buffer provided by the heat storage tank, you can fire the boiler whenever it's convenient for you. As a result you can use wood for all your heating needs all year long, without having to feed wood into the boiler every few hours," says company representative Jim Nichols. "Another advantage of this system is that the boiler doesn't have to cycle æon and off' all the time to maintain a constant water temperature. As a result, it can operate at maximum output until the wood is completely consumed which greatly improves effiency." The storage tank can be used with most wood-fired boilers on the market. The wood-fired boilers that Tarm offers range in size from 100,000 to 198,000 btu/hour. They sell for $3,195 to $8,995 apiece. A storage tank, heat exchanger, and various control valves sell for $3,100 to $4,000. Contact: FARM SHOW Followup, Tarm USA Inc., Box 285, Lyme, N.H. 03768 (ph 800 782-9927; fax 603 795-4740; website: www.woodboilers.com).

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