<div dir="ltr"><div>thanks!</div><div><br></div><div>We did indeed play with emissivity. But that is giving a 0.4% energy saving ;-)</div><div><br></div><div>leen<br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 24 May 2018 at 17:48, Bishop, Bill <span dir="ltr"><<a href="mailto:bbishop@pathfinder-ea.com" target="_blank">bbishop@pathfinder-ea.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="#0563C1" vlink="#954F72" lang="EN-US">
<div class="m_-597770854121034890WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Hi Leen,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">We have discussed reflective paints a couple times in the forums - back</span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">
<a href="http://energy-models.com/forum/discourse/general-discussion/experience-modeling-ceramic-insulation-coating" target="_blank">
in September 2017 here</a> <span style="color:#1f497d">and in more detail</span> <a href="http://energy-models.com/forum/ceramic-insulating-paint-additives#comment-11419" target="_blank">
in 2011 here</a>.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">I have not used the products. Research and anecdotes question the value of “ceramic insulation” paints. It is doubtful that they impact R-value in any meaningful
way. You can try modeling it by varying the absorptance and/or emissivity of the wall, if the product you are considering provides those values.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">The main thing to realize is at best, paints can affect radiative heat transfer, but do nothing for conduction, convection or infiltration.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">~Bill<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black">William Bishop, PE, BEMP, BEAP, CEM, LEED AP<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer<u></u><u></u></span></b></p>
<p class="MsoNormal"><b><span style="font-size:3.0pt;font-family:"Arial",sans-serif;color:black"><u></u> <u></u></span></b></p>
<p class="MsoNormal"><u></u><img src="cid:image002.jpg@01D3F355.4F862F00" alt="Pathfinder-EA-logo-2" width="91" hspace="12" height="58" align="left"><u></u><b><i><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#002060">T:
(585) 698-1956</span></i></b><b><i><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#002060">
</span></i></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"> </span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1f497d">F: (585) 325-6005<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><a href="mailto:wbishop@pathfinder-ea.com" target="_blank"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">bbishop@pathfinder-ea.com</span></a></span><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"> <wbr> </span><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><a href="http://www.pathfinder-ea.com/" target="_blank"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:blue">www.pathfinder-ea.com</span></a><u></u><u></u></span></p>
<p class="MsoNormal"><u></u><span style="margin-left:358px;margin-top:79px;width:31px;height:28px"><img src="cid:image004.png@01D3F355.4F862F00" width="25" height="22"></span><u></u><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1f497d">134
South Fitzhugh Street <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#1f497d"><a href="https://maps.google.com/?q=134%0D%0A+South+Fitzhugh+Street+%0D%0A+Rochester,+NY+14608&entry=gmail&source=g">Rochester, NY 14608</a>
</span><i><span style="font-size:7.0pt;font-family:"Verdana",sans-serif;color:#00b0f0">Ask me why Carbon Fee & Dividend may be right for you.</span></i><span style="font-size:9.0pt;font-family:"Verdana",sans-serif;color:#00b0f0"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Bldg-sim [mailto:<a href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@<wbr>lists.onebuilding.org</a>]
<b>On Behalf Of </b>leen peeters via Bldg-sim<br>
<b>Sent:</b> Thursday, May 24, 2018 4:48 AM<br>
<b>To:</b> BldgSim Mailing List <<a href="mailto:bldg-sim@onebuilding.org" target="_blank">bldg-sim@onebuilding.org</a>>; Egon Troch <<a href="mailto:egon@think-e.be" target="_blank">egon@think-e.be</a>>; <a href="mailto:thomas.vercammen@i-vec.be" target="_blank">thomas.vercammen@i-vec.be</a><br>
<b>Subject:</b> [Bldg-sim] reflective ceramic paint<u></u><u></u></span></p><div><div class="h5">
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<div>
<p class="MsoNormal">Hi,<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">is there anyone who ever applied this type of paint on the inside? One of the manufacturers claims it gives the effect of 7.5 cm of EPS insulation. Product is ThermaCote.
<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal">We have tried to simulate it with the reflective coating, but the impact disappears in the error margins...<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Any experience and measured values would help us!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Thanks a lot!<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
</div>
<div>
<p class="MsoNormal">Leen Peeters<u></u><u></u></p>
</div>
</div>
</div></div></div>
</div>
</blockquote></div><br></div>