"Collar" Collects Heat From Stationary Engines

Collar Collects Heat From Stationary Engines ENERGY Miscellaneous The Heat Collar from Bunker Hill Engine captures otherwise wasted heat from stationary engine exhausts “The first one we built was for a guy with a natural gas engine ” says Atlee Weaver Bunker Hill Engine “He uses the water heated by the exhaust for an in-floor heating system ” The Heat Collar channels exhaust through a pipe filled with small tubes Water enters at one end and runs through the pipes the length of the heat exchanger to exit into a standard hot water system Internal baffles keep the water moving to reduce scale buildup An exhaust bypass valve triggered by the internal water thermostat ensures water won’t overheat The Heat Collar is equipped with a combination pressure/temperature gauge for visual monitoring as well The heat exchanger and exhaust valve are made with 304-grade stainless steel Mounting brackets and hardware are also stainless steel “We also have a radiator heat exchanger option that can tie into the Heat Collar ” explains Weaver “It lets you also recover heat from the engine coolant ” The 80-in long Heat Collars are available in two diameters The 8-in model is sized for up to 3 1/2-in exhaust pipes and is priced at $6 500 The 11-in model is sized for exhaust pipes up to 5-in diameter and is priced at $7 750 The Radiator Heat Exchange option adds $1 000 to the cost of a system “Every 1 000 cu ft of natural gas your engine burns produces 225 000 btu’s in exhaust and the same in radiator heat ” says Weaver “Every gallon of diesel fuel produces 31 000 btu’s in exhaust heat and the same in radiator heat Why not capture as much of that energy as you can?” Contact: FARM SHOW Followup Bunker Hill Engine 6019 County Road 77 Millersburg Ohio 44654 ph 330 275-7177; jyoder@bunkerhillengine com

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