Using pellet stove vent pipe for heating?

[benpelletstove]

I was just wondering about all the hot exhaust from the pellet stove that is going up the chimney. Could this be used for heating purposes. I have a enviro empress insert put in an existing prefabricated two story fire place. The installer put a 4 inch flexible pipe up into the chimney which has 10 inch vent pipe. Is there any vent pipe for the pellet stove that can be used for heating? I was thinking of a pipe surrounded by another pipe so that air can be circulated in the outer pipe to be blown into a room. Any suggestions would be appreciated.

 

[Metal]

Hot air up the pipe = draft = good.

 

[Nicholas440]

My concern with pulling heat out of the exhaust vent is condensation in the vent pipe. I've thought about trying to design a vent that would capture the exhaust, and get some heat from it then blow the heat back into the room but I think condensation would occur, and secondly you wouldnt get much heat back for the expense of what it would take to fabricate a complex pipe within a pipe. It is possible though, and doesnt have to be a pipe inside of a pipe either.

 

[benpelletstove]

I read somewhere that the pellet stove only gives 25% heat and the rest is wasted. There are machines that convert pellets into electricity and use the heat to heat water for hot water. There must be some way of getting the rest of the heat for heating home. What would suggest for the pip configuration? Thanks.

I have the link to the site for this electricity and water heat machine.

http://www.sunmachine.com/english/index.htm

 

[kinsmanstoves]

Do not quote me on this but the exhaust of a stove has to be at least 190 degrees or creosote will begin to form. That is part of the EVL formula for pipes.

Eric

 

[Kenny1]

Ben - You may wish to check your stoves manual for its efficiency rating. If it does not list one, 70% would be a good guesstamate.

Cheers

Kennt