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<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Dear Timothy</span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>We have tried to model
TermoDeck together with IES in <st1:place w:st="on"><st1:country-region w:st="on">UK</st1:country-region></st1:place>
with the approach you describe. Unfortunately, the results from IES simulations
have differed from the results we expect to find. There seems to be two major
problems with modelling TermoDeck in this way:</span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=3 color=navy face="Times New Roman"><span lang=EN-US style='font-size:
12.0pt;color:navy'><span style='mso-list:Ignore'>1.<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>The actual air-to-slab heat transfer in a hollow core slab is quite
different from what you get from standard correlations for fully developed duct
flow. </span></font><font color=navy><span lang=EN-US style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:54.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo2'><![if !supportLists]><font
size=3 color=navy face="Times New Roman"><span lang=EN-US style='font-size:
12.0pt;color:navy'><span style='mso-list:Ignore'>2.<font size=1
face="Times New Roman"><span style='font:7.0pt "Times New Roman"'>
</span></font></span></span></font><![endif]><font size=2 color=navy
face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:Arial;
color:navy'>The vertical conduction through the solid concrete
“walls” between the cores is significant, also in a situation where
both the zone below and that above have similar conditions. This is because the
film coefficients at the floor and the ceiling will be significantly different.
This conduction process is completely neglected if the core “walls”
are treated as if they were physical walls of a room. In a 1D model, and as I
understand it also in IES, a vertical wall will only conduct horizontally. As a
result, the net conduction over the TermoDeck slab is severely underestimated.</span></font><font
color=navy><span lang=EN-US style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Our proprietary model of
TermoDeck will treat both these phenomena with sufficient accuracy and it has
been experimentally validated (including a test building). It has also been
verified with regard to reality in more than 380 projects world-wide. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>We strongly advise
consultants and clients to contact us to discuss and correctly design projects
incorporating ventilated hollow core slabs. There are many aspects involved in
these systems that must be carried out correctly in order to perform properly:
Slab customization, Slab layout configuration, Thermal modelling and Controls.
If the controls are not properly designed the function will not be very good.
Our experience tells us that this is a big concern as our control
specifications are not always implemented correctly.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Best Regards<o:p></o:p></span></font></p>
<p class=MsoPlainText><st1:PersonName ProductID="Alexander Engström" w:st="on"><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:Arial;
color:navy'>Alexander Engström</span></font></st1:PersonName><font color=navy
face=Arial><span style='font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoPlainText><b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>TermoDeck
International Ltd</span></font></b><font color=navy face=Arial><span
style='font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Box 227, 133 02
Saltsjobaden, Sweden<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Phone: +46 8 717 16 71</span></font><font
size=3 color=navy face=Arial><span lang=EN-GB style='font-size:12.0pt;
font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><st1:place w:st="on"><st1:City w:st="on"><font size=2
color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;font-family:
Arial;color:navy'>Mobile</span></font></st1:City></st1:place><font
color=navy face=Arial><span lang=EN-GB style='font-family:Arial;color:navy'>: +46
70 643 05 95<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'>Fax: +46 8 748 95 11</span></font><font
size=3 color=navy face=Arial><span lang=EN-GB style='font-size:12.0pt;
font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=EN-GB
style='font-size:10.0pt;font-family:Arial;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoPlainText><st1:address w:st="on"><st1:Street w:st="on"><font
size=2 color=navy face=Arial><span lang=EN-GB style='font-size:10.0pt;
font-family:Arial;color:navy'>PO Box 4805</span></font></st1:Street><font
color=navy face=Arial><span lang=EN-GB style='font-family:Arial;color:navy'>, <st1:City
w:st="on">London</st1:City> <st1:PostalCode w:st="on">SW1W 0XA</st1:PostalCode>,
<st1:country-region w:st="on">United Kingdom</st1:country-region></span></font></st1:address><font
color=navy face=Arial><span lang=EN-GB style='font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'>Phone: +44 207 821 5066<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'>Fax: +44 207 828 1871<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=FR
style='font-size:10.0pt;font-family:Arial;color:navy'>Email: </span></font><a
href="mailto:alex@termodeck.com"><font color=navy face=Arial><span lang=FR
style='font-family:Arial;color:navy'>alex@termodeck.com</span></font></a><font
size=3 color=navy face=Arial title="blocked::http://www.termodeck.com/"><span
title="blocked::http://www.termodeck.com/"><span lang=EN-GB style='font-size:
12.0pt;font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial
title="blocked::http://www.termodeck.com/"><span style='font-size:10.0pt;
font-family:Arial;color:navy'>Skype: alexander_engstrom<o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"
title="blocked::http://www.termodeck.com/"><span style='font-size:10.0pt'></span><a
href="http://www.termodeck.com"><font color=navy face=Arial><span
style='font-family:Arial;color:navy'><span
title="blocked::http://www.termodeck.com/">www.termodeck.com</span></span></font></a></span></font><font
color=navy face=Arial><span style='font-family:Arial;color:navy'><o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 face="Courier New"><span style='font-size:
10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma'>-----Ursprungligt meddelande-----<br>
<b><span style='font-weight:bold'>Från:</span></b>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>För </span></b>Matutinovic, Luka<br>
<b><span style='font-weight:bold'>Skickat:</span></b> den 6 mars 2009 14:13<br>
<b><span style='font-weight:bold'>Till:</span></b> Timothy Moore;
bldg-sim@lists.onebuilding.org; virtual-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Ämne:</span></b> Re: [Bldg-sim] IES VE:
Radiant, hollow core ceiling</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Univers><span lang=EN-US
style='font-size:10.0pt;font-family:Univers;color:blue'>Timothy,</span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Univers><span lang=EN-US
style='font-size:10.0pt;font-family:Univers;color:blue'>Thanks for the great
summary. Do you know if it's possible to model Thermodeck in eQuest by tricking
the system somehow? I've bumped up the thermal mass of the floors, but
it's obviously not having as big an impact as correctly modelling the CFD
component. I had a thought about modelling a pre-coil to simulate the
damping effects of the slab in reducing peaks and then manually removing that
energy, but I'm not sure if this is correct. Any thoughts?</span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Univers><span lang=EN-US
style='font-size:10.0pt;font-family:Univers;color:blue'>Cheers,</span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=1 color=blue face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:blue;font-weight:bold'>Luka
Matutinovic, </span></font></b><font size=1 color=blue face=Arial><span
lang=EN-US style='font-size:9.0pt;font-family:Arial;color:blue'>B.A.Sc., LEED<sup>®</sup>
AP</span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><st1:place w:st="on"><st1:PlaceName w:st="on"><em><i><font
size=1 color=blue face=Arial><span lang=EN-US style='font-size:7.5pt;
font-family:Arial;color:blue'>Green</span></font></i></em></st1:PlaceName><em><i><font
size=1 color=blue face=Arial><span lang=EN-US style='font-size:7.5pt;
font-family:Arial;color:blue'> <st1:PlaceType w:st="on">Building</st1:PlaceType></span></font></i></em></st1:place><em><i><font
size=1 color=blue face=Arial><span lang=EN-US style='font-size:7.5pt;
font-family:Arial;color:blue'> Consultant</span></font></i></em><i><font
size=2 face=Arial><span lang=EN-US style='font-size:10.0pt;font-family:Arial;
font-style:italic'><br>
</span></font></i><em><i><font size=1 color=blue face=Arial><span lang=EN-US
style='font-size:6.0pt;font-family:Arial;color:blue'> </span></font></i></em><i><font
size=1 face=Arial><span lang=EN-US style='font-size:6.0pt;font-family:Arial;
font-style:italic'><br>
</span></font></i><font size=1 color=blue face=Arial><span lang=EN-US
style='font-size:7.5pt;font-family:Arial;color:blue'>T.
416.487.5257 ext. 317 <br>
F. 416.487.9766 <br>
Toll Free 1.888.425.7255<br>
www.halsall.com <br>
</span></font><font size=1><span lang=EN-US style='font-size:6.0pt'><br>
</span></font><b><font size=1 color=blue face=Arial><span lang=EN-US
style='font-size:9.0pt;font-family:Arial;color:blue;font-weight:bold'>HALSALL
ASSOCIATES LTD. <br>
</span></font></b><st1:City w:st="on"><font size=1 color=blue face=Arial><U1:CITY u2:st="on"><span
lang=EN-US style='font-size:7.0pt;font-family:Arial;color:blue'>Toronto</U1:CITY></span></font></st1:City><font
size=1 color=blue face=Arial><span lang=EN-US style='font-size:7.0pt;
font-family:Arial;color:blue'> <U1:CITY u2:st="on"><st1:City w:st="on">Richmond
Hill</U1:CITY></st1:City> <U1:CITY u2:st="on"><st1:City w:st="on">Ottawa</U1:CITY></st1:City>
<U1:CITY u2:st="on"><st1:City w:st="on">Sudbury</U1:CITY></st1:City> <br>
<U1:CITY u2:st="on"><st1:City w:st="on">Burlington</U1:CITY></st1:City> <U1:CITY u2:st="on"><st1:City
w:st="on">Calgary</U1:CITY></st1:City> <U1:CITY u2:st="on"><st1:City
w:st="on">Vancouver</U1:CITY></st1:City> <U1:CITY u2:st="on"><st1:City
w:st="on">Dubai</U1:CITY></st1:City> <br>
</span></font><font size=1><span lang=EN-US style='font-size:6.0pt'><br>
</span></font><b><font size=1 color=blue face=Arial><span lang=EN-US
style='font-size:8.5pt;font-family:Arial;color:blue;font-weight:bold'>‘50
Best Workplaces in <U1:COUNTRY-REGION u2:st="on"><U1:PLACE u2:st="on"><st1:country-region
w:st="on"><st1:place w:st="on">Canada</U1:PLACE></U1:COUNTRY-REGION></st1:place></st1:country-region>’
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</span></font></b><i><font size=1 color=blue face=Arial><span lang=EN-US
style='font-size:7.5pt;font-family:Arial;color:blue;font-style:italic'>2008
Globe and Mail</span></font></i><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=5 color=green face=Webdings><span lang=EN-US
style='font-size:18.0pt;font-family:Webdings;color:green'>P</span></font><strong><b><font
color=black face="Times New Roman"><span lang=EN-US style='color:black'> </span></font></b></strong><strong><b><font
size=1 color=green face=Verdana><span lang=EN-US style='font-size:7.5pt;
font-family:Verdana;color:green'>Please consider the environment before
printing this e-mail</span></font></b></strong><span lang=EN-US><o:p></o:p></span></p>
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style='font-size:12.0pt'> <o:p></o:p></span></font></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
lang=EN-US style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Timothy Moore<br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, March 06, 2009 3:59
AM<br>
<b><span style='font-weight:bold'>To:</span></b>
bldg-sim@lists.onebuilding.org; virtual-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Bldg-sim] IES VE:
Radiant, hollow core ceiling</span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Rebecca and others, </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>Modeling air-cooled
(or heated), hollow-core radiant slabs (such as TermoDeck) within IES Virtual
Environment is a relatively straightforward matter:</span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>1) Include the
hollow-core geometry in your model. This must be segmented to properly capture
the changing delta-T over distance as the supply air gains heat while passing
through any sections of the floor cavity that are going to be in series rather
than parallel configurations. </span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>2) If the hollow core
is cooled via natural ventilation, then the volume of the core spaces needs to
be coupled to the plenums or zones that include the operable openings. Like
windows or other operable openings in the occupied spaces, these openings can
be controlled via schedules, interior conditions, climate variables, or
formulae including any of these. The coupled MacroFlo dynamic bulk airflow
modler within the VE will need to run whenever natural ventialtion is to be
acconted for, but not if there were no operable windows and the hollow-coore
was to be cooled by mechanically driven supply airflow. </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>In the case of
natural ventialtion, you may also wish to use the MicroFlo CFD tool within the
VE to determine the performacne of specific openings, cavities, or occupied spaces
under specific conditons. The bulk airflow model and thermal simulation are
used to set up initial boundary conditions for the CFD model, and then the
results from the CFD run can then inform revision of the operable openings in
the dynamic bulk-airflow + thermal modeling. While the CFD work can be valuable
in determining performance and refining the model, it is not required to run
the dynamic bulk-airflow + thermal modeling of the naturally ventilated spaces,
nor is it required for modeling the hollow-core floor.</span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>3) Apply convective
heat transfer coefficients to the interior surfaces of the hollow-core material
constructions appropriate to the use of this core space as a duct (see
ASHRAE Fundamentals for determining appropriate coefficients). You will
need to calculate the equivalent air-film resistance, as this is the value you
will change, replacing the air-film resistance associated with the default
variable coefficient for natural convection in the Constructions dialog. Then
open the Derived Parameters dialog from there to confirm that the convective
heat transfer coefficient calculated by the VE is what you intended (and thus
that you have entered the correct air-film resistance value). Note also that
the bottom surface construction of the hollow-core ceiling will be applied as
the Ceiling construction for the occupied space below, and therefore the
"Outside" surface air-film resistance for this element will be the
one facing the interior of the hollow core.</span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>4) If air-cooling or
heating of the hollow core is mechanically driven, set up the system in
ApacheHVAC with the supply air running through the hollow core geometry as
would be done in the actual building. If it is a mixed-mode system, wherein the
cavity is alternately cooled by mechanical supply air and natural ventilation,
then set up the controls such that these modes hand-off appropriately—i.e.,
if no overlap is desired, ensure that controllers for both system include
common sensed variable and thresholds, and non-overlapping responses at these
thresholds.</span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>IES VE is in fact
exceptionally well suited to doing this and provides appropriate means of
controlling such systems and of accounting for the full range of radiant and
convective heat transfer paths involved. </span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 color=navy face="Times New Roman"><span
lang=EN-US style='font-size:12.0pt;color:navy'> </span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=2 color="#1f497d" face=Calibri><span lang=EN-US
style='font-size:11.0pt;font-family:Calibri;color:#1F497D'>As with any tool,
taking the time to first understand how to use the tool properly is important
to getting appropriate results. </span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=2 color=navy face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:navy;font-weight:bold'>Timothy
Moore <br>
</span></font></b><font size=2 color=navy face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:navy'>Senior Consultant –
Special Projects<b><span style='font-weight:bold'> </span></b></span></font><span
lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:8.0pt;font-family:Arial;color:navy'><br>
<st1:place w:st="on"><st1:City w:st="on">Mobile</st1:City></st1:place>: 415 810
2495 <br>
Office: 415 983-0603<br>
<u><a href="mailto:timothy.moore@iesve.com" target="_blank"
title="mailto:timothy.moore@iesve.com"><font color=navy
title="mailto:timothy.moore@iesve.com"><span
title="mailto:timothy.moore@iesve.com"><span style='color:navy'>timothy.moore@iesve.com</span></span></font></a></u><br>
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<p class=MsoNormal><font size=1 color=navy face=Arial><span lang=EN-US
style='font-size:8.0pt;font-family:Arial;color:navy'><br>
**Design, Simulate + Innovate with the <Virtual Environment>**</span></font><span
lang=EN-US><o:p></o:p></span></p>
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<p class=MsoNormal><b><font size=2 face=Tahoma><span lang=EN-US
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span lang=EN-US style='font-size:10.0pt;font-family:Tahoma'>
Rebecca Butler [mailto:Rebecca.Leigh.Butler@gmail.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, March 05, 2009
8:50 AM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] IES VE:
Radiant, hollow core ceiling</span></font><span lang=EN-US><o:p></o:p></span></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-US
style='font-size:12.0pt'>I have a question regarding the capabilities of IES VE
and its CFD package and I was hoping someone might have some experience or
insight to help get me started on the following problem. We have a
concept cooling design which includes a radiant hollow core concrete ceiling through
which evaporatively cooled air is routed. The air which is routed through
the radiant ceiling comes from a central evaporative cooler and is then
exhausted at the exterior of each room after it has passed through the airflow
passages in the ceiling. Just to be clear, this is not a typical radiant
system in that electricity is being used to cool the slab but instead
evaporatively cooled outdoor air is being used in its place. We also want
to couple these effects with natural ventilation which occurs because of the
use of operable windows. <br>
<br>
We are trying to analyze the effects of these techniques in a cooling season in
<st1:place w:st="on"><st1:State w:st="on">Colorado</st1:State></st1:place>
(hence the benefit of the evaporative cooler). We have conducted rough
calculations of the benefits of using such a system using standard ASHRAE
energy transfer techniques and we want to verify our results. Have you
ever heard of this type of system being modeled in IES VE and/or is it capable
of modeling such a system? Is there a way to modify the "radiant
ceiling" option in IES to take into account the saving which would occur
by using evaporatively cooled air in the place of electricity? If not, is
there a way to manually create such a system from the ground up?<br>
<br>
Any help would be greatly appreciated. Thank you.<br>
<font color="#888888"><span style='color:#888888'><br>
Rebecca Butler<br>
LEED AP<br>
Enermodal Engineering<br>
(303) 861-2070</span></font> <o:p></o:p></span></font></p>
<p class=MsoPlainText><font size=2 color=navy face=Arial><span lang=EN-US
style='font-size:10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span lang=EN-GB
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
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