<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]--><o:SmartTagType
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="State"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="PersonName"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:blue;
text-decoration:underline;}
p
{mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman";}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:612.1pt 792.1pt;
margin:42.55pt 42.55pt 42.55pt 85.05pt;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-GB link=blue vlink=blue>
<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Rebecca,<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'><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'>What I would is utilise IESs’ good
capability in modelling building physics. The hollow concrete slab could be
modelled as a narrow, concrete “plenum” above the zone to be
conditioned via the cooled slab. This “plenum” zone could then be
supplied with the evaporatively cooled air at estimated rate. <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'>I would not go down the path of chilled
beams as they are difficult to control and esp difficult to monitor in the <st1:place
w:st="on">Vista</st1:place>. Also concrete is not amongst the material types
for chilled ceiling. The heat transfer rate could get exaggerated with other
material types. <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'><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'>Hope this helps.<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'><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'>Minu<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'><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'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span lang=EN-US style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<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'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Rebecca Butler<br>
<b><span style='font-weight:bold'>Sent:</span></b> Thursday, March 05, 2009
11:50 AM<br>
<b><span style='font-weight:bold'>To:</span></b> <st1:PersonName w:st="on">bldg-sim@lists.onebuilding.org</st1:PersonName><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>
</div>
<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 style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span 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:State w:st="on"><st1:place w:st="on">Colorado</st1:place></st1:State>
(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 align=center style='text-align:center'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>This message has been scanned by <a
href="http://www.mailcontroller.altohiway.com/">MailController</a>.<o:p></o:p></span></font></p>
<p align=center style='text-align:center'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;background:white'>Click <a
href="https://www.mailcontroller.altohiway.com/sr/B+B4VCk+QTDTndxI!oX7UsfY2N4Ulvv6bOTxJNtZIZDJbSeUxNj6Ur5PRk0b6j6Y9uosj9VPpCSgvJyt6ermNw==">here</a>
to report this email as spam.</span><o:p></o:p></font></p>
</div>
</body>
</html>