[Greenbuilding] Visible Flames (Fireplaces) in Tight Houses

[John Daglish]

Not sure if something like this is available in the US.

A double walled stainless steel flue with an interior insulated flue being
for the smoke/fumes and the outer annular space for the air intake/preheat
of the combustion air.  Gas through the wall flues use this technique.  see
p 8
http://www.poujoulat.fr/media/Avis-Technique-CSTB-Efficience-14-12-1818.pdf

regards

John Daglish
Paris, France



2014-12-03 15:43 GMT+01:00 <conservationarchitect at rockbridge.net>:

>   Alan
>
> How tight were the openings into this closed loop fireplace?  This may be
> acceptable to my client.   .6ach at 50pa is impressive with these
> handicaps.  What would your recommendation for interior cloths dryer be?
>
> As an alternative to the insulated chase, could you define a space up to a
> triple wall chimney that has the specified clearance to combustible
> material filled with non combustible insulation such as vermiculite.
>
> Thanks
> Eli
>
>
>  *From:* Alan Abrams <alan at abramsdesignbuild.com>
> *Sent:* Tuesday, December 02, 2014 2:17 PM
> *To:* Green Building <greenbuilding at lists.bioenergylists.org>
> *Subject:* Re: [Greenbuilding] Visible Flames (Fireplaces) in Tight Houses
>
>  in a recent project for other pyrophilic clients, (and despite all my
> hand wringing to them) I spec'd a wood stove by Napoleon:
> http://www.napoleonfireplaces.com/products/nz26-zero-clearance-and-masonry-fireplace/
>
> even with that gratuitous feature (and a conventional clothes drier) the
> house came in below 0.6 ACH at 50 PA. One nice feature is that the stove has
> provision to route air heated within its jacket to remote locations, so the
> occupants don't collapse from heat prostration while it's in use. In the
> subject case, hot air was ducted to a point adjacent to the heat pump
> return (direct connect is prohibited by the mnfr)
>
> one thing to bear in mind is that the length of the flue, even with a roof
> top damper, represents an ambient or near ambient condition. applying
> insulation directly against the flue is prohibited, so an insulated chase
> was provided instead.
>
> -AA
>
>
>  Alan Abrams
>
> *certified professional building designer, AIBDcertified passive house
> consultant, PHIUS*
> *certified passive house builder, PHIUS*
> cell     202-437-8583
> alan at abramsdesignbuild.com
> HELICON WORKS *Achitecture and Education*
> <http://www.heliconworks.com/index2.html>
>
> On Tue, Dec 2, 2014 at 1:37 PM, <conservationarchitect at rockbridge.net>
> wrote:
>
>>   I intend to build only high standard thermal envelopes.  I have a
>> client that expresses interest in this except she wants a fireplace.  Ugh!
>> I am looking for ways for her to see an open flame that will not compromise
>> the benefit  of a high standard thermal envelope.  I have suggested an
>> outdoor air fed wood stove with a glass door.  This could be installed to
>> look like a traditional fireplace.
>> She has expressed interest in unvented gas fireplace, Ugh again!  I
>> certainly do not want CO being introduced by design into a tight thermal
>> envelope.  Increasing ventilation rates would be required.  I am wondering
>> if a vented gas fireplace that has outdoor air feed would be acceptable.  I
>> am wondering if others on this list have managed clients with the
>> expectation of seeing a flame in a tight thermal envelope.
>>
>>  I am beginning my career as a contractor.  My intention is to sale
>> predesigned homes that incorporate the high standard thermal envelope with
>> my details so my client and I know what the cost is up front.  To do this,
>> I am limiting what I will offer.  This is one reason I am moving away from
>> my previous custom design architect model where you must involve your
>> client in all decisions to build there dream building.
>> To achieve high energy performance buildings, multiple systems need to be
>> complimentary.  This is why I want to sale a package that achieves this.  I
>> am wanting to control these choices.  Sometimes that means turning down
>> projects.
>>
>>  Eli
>>
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>
>
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-- 
John Daglish
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