<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Martin,<div>I have this data of static calculation of summer performance we made with a not dynamic software... that says that hours of delay of heat weave and reduction of the heat weave in a straw wall with 4,5 cm clay inside and 3,5 lime outside..and 35 straw on hedge.</div><div>Delay of 14,1 hours reduction of wave peak 98%...very good results indeed especially for summer climate...</div><div>Tha calculation uses official data for energetic certification in italy.... i applied that for spain...</div><div>warm wishes, valentina</div><div><br></div><div><img height="270" width="704" apple-width="yes" apple-height="yes" id="e4a64db6-a790-42c0-b8f1-d073fb405c00" src="cid:60AF4BA8-6DA9-4AEA-AFB9-F1C863098A32@local.lan"></div><div><br><div><div apple-content-edited="true">
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<br><div><div>El 29/11/2011, a las 03:43, martin hammer escribió:</div><br class="Apple-interchange-newline"><blockquote type="cite">
<title>Re: [GSBN] Decrement factor of SB walls</title>
<div>
<font face="Arial"><span style="font-size:11pt">Thanks very much Jorge, David, Laura, and Bohdan,<br>
<br>
Very helpful. I will study it all further.<br>
<br>
Decrementally yours,<br>
<br>
Martin<br>
<br>
<br>
On 11/28/11 2:55 PM, "David Eisenberg" <<a href="x-msg://179/strawnet@aol.com">strawnet@aol.com</a>> wrote:<br>
<br>
</span></font><blockquote type="cite"><font face="Arial"><span style="font-size:11pt">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. <br>
<br>
David Eisenberg<br>
<br>
<br>
-----Original Message-----<br>
From: Laura Bartels <<a href="x-msg://179/laura@greenweaverinc.com">laura@greenweaverinc.com</a>><br>
To: Global Straw Building Network <<a href="x-msg://179/GSBN@sustainablesources.com">GSBN@sustainablesources.com</a>><br>
Sent: Mon, Nov 28, 2011 3:40 pm<br>
Subject: Re: [GSBN] Decrement factor of SB walls<br>
<br>
Hi Martin, <br>
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?<br>
</span><font size="2"><span style="font-size:10pt"><br>
Laura<br>
<br>
<br>
John,<br>
<br>
There is that chapter from Ken Haggard and Polly Cooper on Natural<br>
Conditioning in the book Alternative Construction where they look at<br>
this. I was looking at it just recently for some curriculum development.<br>
<br>
Laura<br>
<br>
John Swearingen wrote:<br>
<br>
</span></font></font><blockquote type="cite"><font face="Arial"><font size="2"><span style="font-size:10pt">Very interesting paper, and well written. Some time ago I remember hearing<br>
someone toss out some similar observations about thermal storage, that on a<br>
diurnal cycle, plaster is activated to a depth of about 2-3 inches<br>
(5cm -7.5cm). I have always figured that the exceptional thermal<br>
performance of<br>
straw bale buildings is not due solely to the high R-value. The broad<br>
thermal mass of the plastered walls, readily available to indoor air for<br>
heat exchange, modulates temperatures like my pink Cadillac modulates bumps<br>
in the road.<br>
<br>
Does anyone know of research and measurements of short and medium thermal<br>
storage in walls?<br>
<br>
John "Diurnally Yours" Swearingen<br>
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