1982 - Volume #6, Issue #1, Page #29[ Sample Stories From This Issue | List of All Stories In This Issue | Print this story | Read this issue]
Super Furnace Outside Furnace
The first prototype of the king-sized furnace was used continuously last fall to provide heat to tobacco curing "barns" near Fitzgerald. It's designed to provide up to 1,000,000 btu's per hour to buildings or dryers located as much as 1,000 ft. away. What's more, the big furnace automatically feeds itself with logs up to 4 ft. long and 12 in. in diameter, and is entirely thermostatically controlled.
Developed by Ron Paulk and Harry Lott of UFT's Paulk division, the unit was designed not only for Georgia's tobacco operations but for everything from corn drying to home heating to livestock barns. UFT plans to market the furnace through its dealers across the U.S.
The furnace consists of a firebox completely immersed in 3,000 gal. of water. The air-tight firebox is force-fed by a small fan through a submersed air vent. Temperature of the water in the boiler is controlled by the rate of burn in the firebox. Paulk says water temperature is maintained at 200?. The water runs out to radiating units in the barns or dryers being supplied with heat and returns at about 160?, depending on the distance traveled and the number of radiators being used.
Wood is fed automatically into the firebox by an ingenious automatic feeding conveyor that can be loaded with a continuous supply of wood. Because wood burns at different rates and is irregular in size, Paulk says they designed scale-controlled grates for the firebox. As wood burns down and the load on the grates lightens, it automatically triggers the feeder to drop more wood. The rate of burn of the fire is controlled with oxygen to maintain the required temperature of water.
The new furnace, along with the automatic feeder, sells for $16,600. Heating kits for barns and dryers run extra, with price depending on the application.
For more information, contact FARM SHOW Followup, United Farm Tools, Inc., Ron Paulk, P.O. BoY 967, Fitzgerald, Ga. 31750 (ph 912 423-9371).
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