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They Put “Waste” Engine Heat To Work
A “Capture the Heat” unit from M&R Welding is a great way to heat a shop with engine exhaust. The heat exchanger comes in 2 sizes and is designed for use with gas or diesel engines being used to power various equipment or drive electric generators.
    “They give full heat within 10 to 15 min. of starting the engine,” says Marvin Hochstetler, M&R Welding.
    The MX150 is for engines up to 150 hp., and the MX300 is for engines from 150 to 300 hp. The smaller MX150 has been used for engines as small as 25 hp.
    The Capture the Heat unit is a simple box with baffles on the inside. Exhaust enters the box at an upper corner, passing around and heating baffles as it goes. It exits out a lower corner opposite the entrance point and is piped out of the building.
    Hochstetler points out that the system can be adapted. Some customers have built a filter box around the fan inlet to filter the air before heating it.
    “Capturing the heat doesn’t cost anything,” says Hochstetler. “It doesn’t take any more fuel.”
    While the unit is intended as a supplementary heat source, captured heat can be significant, notes Hochstetler. “You can heat a 42 by 75 by 16-ft. building if an engine is running most of the time.”
    Hochstetler says some customers with well-insulated shops report producing enough heat during the day to keep it warm all night.
    The MX150 is priced at $1,100, and the MX300 is priced at $1,300. That price includes a fan, but no motor.
    Contact: FARM SHOW Followup, M&R Welding, 0505 N 300 W, LaGrange, Ind. 46761 (ph 260 463-3765, Ext. 1).


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2018 - Volume #42, Issue #3