<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I didn’t see John’s reply before this went out. His numbers put a finer point on my quick off-the-cuff generalizations.<div class=""><br class=""><div class="">
<div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;"><div class="" style="orphans: 2; widows: 2;"><div dir="auto" class=""><div class=""><div class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class=""><span class=""><span class="">Thanks, August</span></span></div><div class="" style="font-weight: normal;"><span class=""><b class=""><br class=""></b></span></div><div class="" style="font-weight: normal;"><span class="" style="float: none; display: inline !important;"><span class=""><font face="Arial" class="">August Hasz, P.E.</font></span></span><div class=""><span class=""><font face="Arial" class="">President</font></span></div><div class=""><div class=""><span class="" style="font-size: 20px;"><font color="#d84942" class="">REG</font></span></div><div class=""><font class="" color="#d84942"><span class="" style="font-size: 14px;">Resource Engineering Group</span></font></div></div><div class=""><font face="Arial" class="">Direct: 970.713.0984</font></div><div class="">Cell: 970.275.3603</div></div></div></div></div></div></div></div></div></div></div><div class="" style="font-weight: normal; orphans: 2; widows: 2;"><a href="mailto:hasz@reginc.com" class="">hasz@reginc.com</a> </div><div class="" style="font-weight: normal; orphans: 2; widows: 2;"><a href="http://www.reginc.com/" class="">www.reginc.com</a></div></div></div></div></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">On May 2, 2019, at 10:56 AM, August Hasz <<a href="mailto:hasz@reginc.com" class="">hasz@reginc.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html; charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Lars- <div class=""><br class=""></div><div class="">To do a comparison of this one single aspect of the insulation options, you need to compare the heat capacity (typically listed as energy stored per unit weight)+ the weight of the different materials. Resistance to heat transfer (R-vlaue or U-value) is typically the most important characteristic to consider. This is pretty straight forward math to do if you have access to the thermal properties of the materials being considered. With natural materials getting an exact reading can be a bit difficult because changes in moisture content (particularly for straw, wood and other organic properties) will alter the heat capacity, with and resistance to heat transfer significantly, but you should be able to find some general average values to use in a comparison. </div><div class=""><br class=""></div><div class="">The story of how this unfolds in buildings is a big more complicated though because we need that mass to be ‘active’ to be of use. For example, a similar thickness of some wood products will store as much heat as that thickness of concrete because of the difference in heat capacity, but concrete will release this heat more quickly, so if we are purely considering heat storage the concrete is likely superior BUT wood is of course renewable, has lower embodied energy and in many applications the increased resistance to heat transfer is a plus. </div><div class=""><br class=""></div><div class="">Is that helpful at all?<br class=""><div class=""><br class=""></div><div class=""><div class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div dir="auto" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class=""><div class="" style="orphans: 2; widows: 2;"><div dir="auto" class=""><div class=""><div class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class=""><div class=""><div class="" style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;"><div class=""><span class=""><span class="">Thanks, August</span></span></div><div class="" style="font-weight: normal;"><span class=""><b class=""><br class=""></b></span></div><div class="" style="font-weight: normal;"><span class="" style="float: none; display: inline !important;"><span class=""><font face="Arial" class="">August Hasz, P.E.</font></span></span><div class=""><span class=""><font face="Arial" class="">President</font></span></div><div class=""><div class=""><span class="" style="font-size: 20px;"><font color="#d84942" class="">REG</font></span></div><div class=""><font class="" color="#d84942"><span class="" style="font-size: 14px;">Resource Engineering Group</span></font></div></div><div class=""><font face="Arial" class="">Direct: 970.713.0984</font></div><div class="">Cell: 970.275.3603</div></div></div></div></div></div></div></div></div></div></div><div class="" style="font-weight: normal; orphans: 2; widows: 2;"><a href="mailto:hasz@reginc.com" class="">hasz@reginc.com</a> </div><div class="" style="font-weight: normal; orphans: 2; widows: 2;"><a href="http://www.reginc.com/" class="">www.reginc.com</a></div></div></div></div></div>
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<div class=""><br class=""><blockquote type="cite" class=""><div class="">On May 2, 2019, at 6:37 AM, Lars Keller <<a href="mailto:larskeller@gmail.com" class="">larskeller@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><div dir="auto" class="">We have a discussion in Denmark where some people argue, that if you compare two walls with similar insulation values, one being insulated with mineralwool, and one with wood cellulose or paper cellulose, then the wood cellulose option can retain / contain more heat thatn the mineralwool solution.</div></span><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><div dir="auto" class="">The advantage of this for the wood cellulose is, that this solution is then capable of absorbing more heat when there is eg more solar influx, and later release the heat into the room again, thus creating more comfort. I assume that this is a result of the cellulose option being heavier than the mineralwool option.</div></span><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class="">I would like to hear thoughts about whether my understanding is correct.</span><div dir="auto" class=""><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class="">I assume straw would share the benefit of the cellulose option.</span><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><br class=""></span></div><div dir="auto" class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class="">Does anyone know if we have / there is numbers to back this up ?</span><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""><span style="font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class="">Best, Lars</span><br style="box-sizing:border-box;font-family:-apple-system,sans-serif;font-size:14.117648124694824px" class=""></div>-- <br class=""><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">-- <br class="">Small Planet<br class="">Om vores firma ~ link<br class="">Om vores masseovne ~ link<br class="">Om vores workshops ~ link<br class="">Kontakt-info<br class="">skype<br class="">jomorandin<br class="">lars.friland<br class=""><a href="mailto:jomorandin@gmail.com" class="">jomorandin@gmail.com</a><br class=""><a href="mailto:larskeller@gmail.com" class="">larskeller@gmail.com</a><br class=""><br class="">Home +45 8668 0505<br class="">Jo +45 2390 0924 (mobile/handy)<br class="">Lars +45 2024 0505 (mobile/handy)<br class=""><br class="">Jo Morandin, Jamilla, Asger & Lars Keller<br class="">Friland 12 B<br class="">8410 Rønde<br class="">Danmark<br class="">---</div>
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