Outdoor Wood Furnace Info

Outdoor Furnaces - Manufacturers WITH EPA-Certified Models => Central Boiler => Topic started by: clydem on January 07, 2012, 10:56:55 PM

Title: Pre heated air for draft intake??
Post by: clydem on January 07, 2012, 10:56:55 PM

Would a OWB  burn more efficiently if the air let in by the draft damper was pre heated somehow?  Possibly heated by the stack gas?

Just a thought,  It comes from 33 years working in a coal fired power plant.

later
Clyde

Title: Re: Pre heated air for draft intake??
Post by: pwdiver on January 08, 2012, 06:28:02 AM

We do the same thing where I work heated forced draft air means we dont have to burn as much fuel as we would with Ambeint air temp. :)

Title: Re: Pre heated air for draft intake??
Post by: Bull on January 08, 2012, 06:48:52 AM

Welcome to the site clydem

Title: Re: Pre heated air for draft intake??
Post by: mcarter on January 09, 2012, 09:15:43 AM

This is interesting, I opened the rear door of my OWB and felt a good amount of heat in that small space escape out.  I wondered if I was losing heat out of my OWB but maybe it was designed this way to sort of preheat the draft air?

yoder or scott have any input on this?

Michael

Title: Re: Pre heated air for draft intake??
Post by: Scott7m on January 09, 2012, 05:17:47 PM

Yea preheated air should give you more efficiency.   Garn furnaces do this but most do not.