Up here in the cold country we spend more money on heat than we do on gasoline. I have heated my 1500 sq foot shop for 42 years with wood, that’s a lot of wood handling. My interest in the sawdust stove is in the time between fills. My current three pass stove needs more wood every two hours. the sawdust stove has been running four hours now and is still going strong on the first fill, one 30 gal drum of sawdust. I will update this post when it goes out.
I’m going to call it a six hour burn, there is still some heat left in the stove but it is starting to cool down.
It was 27 degrees out side when I started the stove and six hours later it is 20 degrees and dark outside.
The fuel I used was four cubic feet of fine dry hardwood sawdust loose packed in the 30 gal. burn chamber.
Any bio fuel that is less than 20% moisture and can be packed should work well.
Did you use the same design as the plans you provided a link for? They have the exhaust coming out the side of the drums. I have not read through the plans yet, just noticed the difference. Seem like a good way to get rid of some waste sawdust, are you using sawdust from a planer or like from a bandsaw mill?
Richard I used sawdust from a 12 inch circle saw. I used the plans from the link but I moved the smoke stack to the top and and used the hole from the side stack to add air to get a top burn to clean the flu gas.
“secondary burn” This also allows me to control the stack temp. I plan on using a, forced air, heat saver on the stack.