|Home » Forums » Business » Message||Login|
You are not logged in. Consider these WOODWEB Member advantages:
Does anyone out there heat their facility with a biomass furnace?
I heated a 5k s/f shop with 12' ceilings with two wood/gas furnaces. Build a fire in the morning and feed it all day, and then if the wood was used up overnight, the gas took over.
It worked very well. It was several years later that I found out the facility had no fire insurance.
We also looked at installing a shredder, storage silo, conveyors and a furnace and boiler system to turn a generator as an electrical co-generation facility. State law requires a watchman 24 hrs on such pressurized boilers, so that was a no go. The 180K cost (1985 dollars) also was high for the savings we would get.
I planned wood heat for a smallish home hobby shop - 1,000 s/f - but insurers said they would not cover it.
I heat a 10,000 sq.ft. shop with a Heatmore 800 outdoor wood stove. It has a big door that I can load through with a forklift. I band bundles all of our plywood and ripsaw scraps after cutting them to about 42" long. We save up the bundles through the none heating season to burn in the winter alone with what we generate throughout the winter. I also fill cardboard have boxes at all of the cutoff saws and save them till winter also.
It may seem like a lot of work but I figure I have to invest labor in the scrap to get rid of it anyway.
I also love to make firewood so that is not a problem for me.
I added 13,000 sq.ft. last year and heat that with a second slightly smaller woodstove. Although it is bigger area it takes quite a bit less wood to heat it because the exhaust fans and make up air for the finish rooms are in the 10,000 sq.ft.
These burners are not at all cheap and
I'm heating 18,000 ft with a hot air wood furnace burning our wood waste.
I generate enough waste per day in the form of planer shavings that are briquetted in a Wiema press along with edgings coming off of the rip saws and all of the cut offs from the chop saws.
The furnace cost 15K and it's paid for itself.
What is the manufacturer of the furnace that you are using?
Biomass Combustion Systems, Worcester, MA.
If you decide it's the type of furnace you want, PM me and I'll go over some of the things I've learned about it.
Yes it is. I have it placed on our loading dock area.
The dock area is closed off from the rest of building via a rollup door. That lets us bring in outdoor combustion air.
It is UL approved for indoor installation.
Now having answered that I thought I would share a little more info.
It's a 500,000 btu unit and to keep it pumping out hot air it needs to be stoked every 4 hours on cold days and maybe every 3 on very cold days when it's just above zero.
There's a single tube axial fan that blows the heated air into the shop and the air disperses quite evenly throughout the building.
I have 18' ceilings and the walls are insulated pretty good, that helps a lot.
As for that 15K price, I purchased it in the off season when they wanted to reduce inventory.
Hope this helps.
I have both the induced draft fan and the heat distribution fan on a digital timer that I can set to run for a set period of time.
For the most part I stoke it up at the end of the day and set the fans to run for 4 hours then shut off. When I come in in the morning I rake the ashes out, turn the fans on while re-loading and that gets the fire going again.
The temps haven't below 57 degrees in shop overnight yet so by 8 in the morning it's hitting 63 and by 10 depending on the outside temps it's hitting 65 or better.
I was wondering on the outdoor wood stoves, do you need in floor heating or what kind of heat exchanger do you use. Thanks for any help.
You do not have to have infloor. I have both infloor and hanging heaters. The infloor is clean and quiet. The hanging type is inexpensive and effective and can easily be placed where you need the heat. I even have an old cast iron floor mount house radiator in my finish room to keep air movement to a minimum. You could even use hot water base board heaters.
These all of course require an outdoor hot water furnace which costs more both to purchase and install than a hot air stove but it keeps the flame and mess safely outdoors.