[TheForge] Heat extracting chimney

Mon Jul 28 10:47:00 2003

Hi Peter,
    Are you the builder of the dragon fireplace?  If so that is a 
wonderful piece of work.

    I figured upon a problem with excess soot an build up, but now I 
hear rumors of codes on how well these things must vent.  As it is for 
myself, I was not as concerned due to thoughts of over insulating it to 
prevent a secondary fire from getting out of hand.  I will first look at 
getting as much heat out from the fire box with heat sinks and forced 
air enclosures.  Then see if there is any heat left to be bothered with 
still in the chimney.  Thanks,

Larry

Peter Fels And Phoebe Palmer wrote:

> Larry: I've made several "sculptural versions". While they worked 
> well, mo one was fond of the extra hardware..arty or not.
> The thing about them is they tend to act like condensers unless you 
> have a well tuned catalytic afterburner in the system.
> So, build that sucker with the assumption that sooner or later there 
> will be a secondary fire in there and the whole thing will turn red 
> hot and sound like a jet engine. A lot of extra walls and vents and 
> insulation and the like..gets expensive, time consuming and chimney 
> sweeps will hate you.
> Oh yeah, if the draw of the fp is at all marginal, you are a smoked 
> smith..........Pete
> Dragons Watch Forge wrote:
>
>> While living in northern Calif the house we lived in had a roof 
>> mounted furnace / air conditioner.  The furnace had such an efficient 
>> heat exchanger that it required an exhaust fan for the burner side of 
>> the unit.  The fan was plastic.
>>
>>    I wish to build a fire place and chimney that has a heat exchanger 
>> in it that is this efficient.  Any one out there done this?  Any 
>> sources of reference materials or plans that are available?
>>
>> Thanks!
>>
>> Larry
>>
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