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Marcus and Jean,<br>
In 90.1, ASHRAE goes give a bit of direction as to the materials
that you are required to use in your Baseline Design walls.
Reference the "Baseline Building Performance" cell in row 5 of Table
G3.1. For the most part, Baseline Design buildings have
steel-framed, insulated walls. That means that the wall should be
mainly comprised of a material that has the equivalent thermal
properties (density, conductivity, and specific heat) of a
combination of steel studs and fiberglass batt insulation,
appropriately area weighted.<br>
<br>
The values that we use are:<br>
conductivity 0.4 kJ/h.m.K<br>
capacity: 0.84 kJ/kg.K<br>
density: 490.6 kg/m3<br>
<br>
Depending upon the climate zone, there may or may not be a
requirement for continuous (rigid foam usually) insulation as well.
Other assemblies such as floors, roofs, etc. also have their own
construction requirements listed in that same G3.1 table.<br>
Best,<br>
David<br>
<br>
On 2/12/2012 04:41, Marcus wrote:
<blockquote
cite="mid:CAEzj1z6ABv9ZT+aXEgerGE2sYdt9yTvykAZas4Mkj1xo=qa7aQ@mail.gmail.com"
type="cite">Hi Jean, welcome to TRNSYS! I did one LEED project in
TRNSYS, but unfortunately I couldn't dig up the constructions
files. But it's fairly easy to put together a few centimeters of
concrete then add and adjust a massless insulation layer to match
the U-value required. This is what I do to get a first
approximation. As far as I know, ASHRAE doesn't specify actually
constructions for baseline - like what the exact mass should be,
except that it should be "light weight". <br>
<br>
Sorry I can't be of more help, but let me know if there's anything
else.<br>
<br>
Marcus<br>
-- <br>
<span style="color:rgb(0,0,0)">Marcus Jones, </span><span
style="color:rgb(0,0,0)"> M.Sc.</span><span
style="color:rgb(0,0,0)">, </span><a moz-do-not-send="true"
style="color:rgb(0,0,0)"
name="SafeHtmlFilter_131245b5df81718e__MailAutoSig"><span
style="font-size:10pt"></span></a><span
style="color:rgb(0,0,0)"><span style="font-size:10pt">LEED<sup>®</sup>AP
BD+C</span></span><br style="color:rgb(0,0,0)">
<i style="color:rgb(0,0,0)">Freelance energy consultant</i><br
style="color:rgb(0,0,0)">
<i style="color:rgb(0,0,0)">Vienna, Austria</i><br>
<br>
<br>
<div class="gmail_quote">On Thu, Feb 9, 2012 at 5:44 PM,
jeannieboef <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jeannieboef@googlemail.com">jeannieboef@googlemail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hello group,
being a new user and trying to learn trnsys on a live project,
I would love if someone could save me some time by donating me
their user defined libraries regarding building envelope
properties of the constructions as defined in ASHRAE 90.1.
This is typically used in a "baseline" building for the
building energy simulation required by the LEED certification
system.<br>
Kind regards<br>
Jean Marais<br>
<br>
Sent from my iPhone<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
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