[GSBN] Decrement factor of SB walls
forum at lamaisonenpaille.com
forum at lamaisonenpaille.com
Tue Nov 29 09:03:33 UTC 2011
Hello,
"Unfortunately, this book is only in English."
I think Jorge meant "French"
All the best,
André 'working on my swing' de Bouter
Le 29/11/2011 02:35, John Swearingen a écrit :
> This is very interesting, and fortunately in English. Unfortunately,
> I don't really know what it means. Can you explain more?
>
> * U-value I know.
> * Thermal bridges to nowhere, I know, but what is a "vented facade"
> (above).
> * What are daily indoor heat capacities and sequential head
> capacities, and what does "strong" and "medium" mean?
> * Phase shift mitigation?
>
> Thanks!
>
> On Mon, Nov 28, 2011 at 3:40 PM, Van Krieken <vankrieken at gmail.com
> <mailto:vankrieken at gmail.com>> wrote:
>
> Hi
>
> The best source of information about this issue (and many others
> concerning insulation, thermal mass, etc) it is the book writen by
> Jean-Pierre Oliva and Samuel Courgey ( L'Isolation Thermique
> Ecologique).
>
> Citing their book, page 175, concerning a wall with wood structure
> and straw bales with medium density (80 to 110 Kg/m3, strawbale
> section 34x46cm. Vented façade in exterior, and interior with clay
> render.
>
>
> Thermal loss U (W/m2K) / R (m2K/W)
> .................................. 0,13 / 7,76
> Losses due to thermal
> bridges............................................... 4%
> Dailyindoorheat capacity (kWh/m2K)................................
> 15 (strong)
> Sequential indoor heat capacity (kWh/m2K).......................25
> (medium)
> Phase shift (hour) / mitigationof the heat flux (%)...............
> 16h / 13%
>
> Unfortunately, this book is only in English. Jean-Pierre Oliva, is
> one of the best known french bio climatic architects, and since
> many years a great enthusiast of straw bale building. His books
> (also La Architectire Bioclimatique) can be found at Amazon.
>
>
> All the best
>
> Jorge VK
> Portugal
>
>
> On Mon, Nov 28, 2011 at 10:55 PM, <strawnet at aol.com
> <mailto:strawnet at aol.com>> wrote:
>
> Ken, Polly Cooper and Jennifer Rennick's chapter that John
> mention's in that Wiley book - Alternative Construction:
> Contemporary Natural Building Methods, has a lot of
> information on this though they don't use the term
> "decrement." They talk about this issue with straw and other
> types of wall systems and go into considerable detail. I would
> get in touch with them and see what they have to say.
>
> David Eisenberg
>
>
> -----Original Message-----
> From: Laura Bartels <laura at greenweaverinc.com
> <mailto:laura at greenweaverinc.com>>
> To: Global Straw Building Network <GSBN at sustainablesources.com
> <mailto:GSBN at sustainablesources.com>>
> Sent: Mon, Nov 28, 2011 3:40 pm
> Subject: Re: [GSBN] Decrement factor of SB walls
>
> Hi Martin,
> Without going back to the details, I could be mistaken, but it
> seems that a study by Ken Haggard a while back addressed this
> or similar properties. I found reference in a GSBN email from
> '07- see below. Is this the same metric?
>
> Laura
>
>
> John,
>
> There is that chapter from Ken Haggard and Polly Cooper on Natural
> Conditioning in the book Alternative Construction where they
> look at
> this. I was looking at it just recently for some curriculum
> development.
>
> Laura
>
> John Swearingen wrote:
>
>> Very interesting paper, and well written. Some time ago I
>> remember hearing
>> someone toss out some similar observations about thermal
>> storage, that on a
>> diurnal cycle, plaster is activated to a depth of about 2-3
>> inches
>> (5cm -7.5cm). I have always figured that the exceptional thermal
>> performance of
>> straw bale buildings is not due solely to the high R-value.
>> The broad
>> thermal mass of the plastered walls, readily available to
>> indoor air for
>> heat exchange, modulates temperatures like my pink Cadillac
>> modulates bumps
>> in the road.
>>
>> Does anyone know of research and measurements of short and
>> medium thermal
>> storage in walls?
>>
>> John "Diurnally Yours" Swearingen
>
> *// *
> */
> */
>
> */
> Laura Bartels
> */GreenWeaver Inc./*
> */520 S. Third St., Suite 5 /*
> */Carbondale, CO 81623
> 970-379-6779 <tel:970-379-6779>
> www.greenweaverinc.com <http://www.greenweaverinc.com>
> /*
> /*/*
>
> /*
>
>
>
> */
> */
> */
> */We've moved to the Third St. Center /*
> /http://thirdstreetcenter.net//
> */A community place promoting inspiration, sustainability and
> creative exchange/*
> /*
> /*
> /*
>>
>>
>> _______________________________________________
>> GSBN mailing list
>> GSBN at sustainablesources.com <mailto:GSBN at sustainablesources.com>
>> http://sustainablesources.com/mailman/listinfo.cgi/GSBN
>
> _______________________________________________
> GSBN mailing list
> GSBN at sustainablesources.com <mailto:GSBN at sustainablesources.com>
> http://sustainablesources.com/mailman/listinfo.cgi/GSBN
>
>
> _______________________________________________
> GSBN mailing list
> GSBN at sustainablesources.com <mailto:GSBN at sustainablesources.com>
> http://sustainablesources.com/mailman/listinfo.cgi/GSBN
>
>
>
> _______________________________________________
> GSBN mailing list
> GSBN at sustainablesources.com <mailto:GSBN at sustainablesources.com>
> http://sustainablesources.com/mailman/listinfo.cgi/GSBN
>
>
>
>
> --
> John Swearingen
> Skillful Means Design & Construction
> 2550 9th Street Suite 209A
> Berkeley, CA 94710
> 510.849.1800 phone
> 510.849.1900 fax
>
> Web Site: http://www.skillful-means.com
> Blog: https://skillfulmeansdesign.wordpress.com
>
>
> _______________________________________________
> GSBN mailing list
> GSBN at sustainablesources.com
> http://sustainablesources.com/mailman/listinfo.cgi/GSBN
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sustainablesources.com/pipermail/gsbn/attachments/20111129/b58fc7a1/attachment.htm>
More information about the GSBN
mailing list