Downdraft stove concept

Re: Downdraft stove concept

PostBy: onehotxfirefighter On: Fri Jan 01, 2010 7:52 am

The costs are listed here
http://www.dunsleyheat.co.uk/prices.htm
This link is broken, either the page no longer exists or there is some other issue like a typo.
onehotxfirefighter
 
Stove/Furnace Make: Dunsley Yorkshire
Stove/Furnace Model: Yorkshire

Re: Downdraft stove concept

PostBy: wyowa On: Fri Jan 01, 2010 12:47 pm

Hi, just a thought here but i have a Englander wood stove that has a ceramic honeycomb in the heat chamber. After stove is up to temp you close the bypass plate ad the exhaust gas go thru this honeycomb and are reburned. Would something like this work for you?
wyowa
 
Stove/Furnace Make: Hardin
Stove/Furnace Model: Automatic Coal Furnace/ stoker

Re: Downdraft stove concept

PostBy: steinkebunch On: Fri Jan 01, 2010 9:59 pm

Good thought - I had investigated that, but from what I read, the catalytic combustors will get ruined with coal soot/smoke. Too much sulphur and other nasty compounds will render the palladium that coats the ceramic useless.

Thanks.
steinkebunch
 
Stove/Furnace Make: Homemade Bituminous Hand-Fed
Stove/Furnace Model: Prill underfed stoker Model M8


Re: Downdraft stove concept

PostBy: steinkebunch On: Mon Jan 04, 2010 11:38 am

Here's a very interesting patent from VC on secondary combustion, incliding a retrofit device - mostly for wood stoves, but might be the same concept for coal.

http://www.freepatentsonline.com/4646712.pdf

It appears that due to simplicity and space, most stoves achieve primary burn and heat exchange in the same place, but it's inefficient, because your cooling the very space you want to keep hot. But wnen you try to separate them, stoves get complicated, big, costly, harder to service, etc.

Steinke
steinkebunch
 
Stove/Furnace Make: Homemade Bituminous Hand-Fed
Stove/Furnace Model: Prill underfed stoker Model M8