| I built a waste oil heater pretty much following the instructions for the Mother Earth News waste oil heater. I made some changes to the burner; some of the work on that is in my diary.
As a twist, I put the outer jacket from the water heater back around the converted tank and am using it as a forced air heater.
This is my second day of using it.
It was 20F degrees outside today. A 1/4 gallon per hour held the temp in the shop at 55 degrees. Increasing the flow to about 1/2 gallon per hour brought the temp up to 70 in about 20 minutes and the temperature was still going up when I turned it down.
The little fan on the floor is at a little bit of an angle to the opening. I think that helps it swirl around the inside of jacket. With both the oil flow rate and the fan on high, I estimate the air to exit at about 150F. I also use a box fan set on low that is hanging near the ceiling. With that, the temp in the 750 sq-ft shop is nice an even. With the slower drip, I can put my hand on the flue though I wouldn't want to leave it there too long. I'll get some accurate temperature readings tomorrow.
I'm am getting a little bit of oil smell inside. I think that the access hatch could be sealed a little better and I'll work on that.
- Ed.
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