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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>My apologies… I’ve just learned that I in fact have
a more advanced version of the </span><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:#1F497D'>ASHRAE Standard-55 Comfort Model than has
yet been approved and published by ASHRAE, and the current published version
does not include the MRT calculation tool.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>ASHRAE is due to provide an updated version of the tool in the
near future, but the timing of that is presently unknown.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The current release of the IES Virtual Environment does,
however, provide air temp, individual surface temperatures, MRT, dry resultant
temp, DPT, moisture content, and RH for all simulation reporting intervals.
These results from the dynamic thermal model, plus user inputs for occupant clothing
level, activity level, and local air speed then provide occupant PPD, PMV, and Comfort
Index for each simulation reporting interval. To assess comfort in close
proximity to a glazed façade vs. the middle of a larger space, users can
sub-divide the space to create a smaller thermal zone adjacent to the façade in
question. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Additional consideration are required to model the effects of
transmitted short-wave radiation actually striking an occupant (see my prior
post on this thread regarding asymmetrical thermal comfort involving
transmitted short-wave radiation).</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<b><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p>
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mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:
column;mso-element-left:-4.5pt;mso-height-rule:exactly'><b><span
style='font-size:13.0pt;font-family:"Calibri","sans-serif";color:navy'>Timothy
Moore <br>
</span></b><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Senior Consultant<br>
Special Projects <o:p></o:p></span></b></p>
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exactly'><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:navy'>Mobile: 415 810 2495 <br>
Office: 415 983-0603<br>
<u><a href="mailto:timothy.moore@iesve.com"><span style='color:navy'>timothy.moore@iesve.com</span></a></u><br>
</span><span style='font-family:"Calibri","sans-serif";color:#1F497D'><a
href="http://www.iesve.com/"><span style='font-size:8.0pt;color:navy'>www.iesve.com
</span></a></span><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:navy'><o:p></o:p></span></p>
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column;mso-element-left:-4.5pt;mso-height-rule:exactly'><span
style='font-size:8.0pt;line-height:115%;font-family:"Calibri","sans-serif";
color:navy'>**Design, Simulate + Innovate with the <Virtual
Environment>**</span><span style='font-family:"Calibri","sans-serif";
color:#1F497D'><o:p></o:p></span></p>
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href="http://www.iesve.com/disclaimer.html"><span style='font-size:8.0pt;
line-height:115%;color:navy'>Email Disclaimer</span></a><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Timothy
Moore<br>
<b>Sent:</b> Tuesday, April 21, 2009 7:45 PM<br>
<b>To:</b> Peter Simmonds; Karen Walkerman; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] MRT Tool<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The ASHRAE Standard-55 Comfort Model (proper name) does allow
for a single user input. However, immediately to the right of the MRT value, it
also includes a “Calc” button that opens a separate dialog. In this
separate dialog, the user can enter values for the following parameters:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Room dimensions<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Occupant location<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Occupant orientation (facing wall or azimuth)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Occupant position (seated or standing)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Temperature for each of four walls, ceiling, and floor<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>And dimensions, location, and temperature for a “window or
panel” area within each of the four walls, ceiling, and floor.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I just sent a post with the actual MRT calculation dialog box
(for those of you that receive visuals in your emails); however, it appears
that the screen shot of the dialog was too big for the Bldg-Sim list serve.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The IES Virtual Environment also provides MRT, dry resultant
temperature, and the full range of ASHRAE 55 thermal comfort input parameters
and results (PPD, PMV, etc.) for a location in the center of the room, as well
as surface temperature results for each individual surface in the model. These
surface temperatures, for any given simulation time step, can then be readily
entered into the ASHRAE Standard-55 Comfort Model above if one is interested in
thermal comfort for a specific location within a rectangular room. <o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<b><span style='font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></b></p>
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<p class=MsoNormal style='mso-element:frame;mso-element-frame-hspace:2.25pt;
mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:
column;mso-height-rule:exactly'><b><span style='font-size:13.0pt;font-family:
"Calibri","sans-serif";color:navy'>Timothy Moore <br>
</span></b><b><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Senior Consultant<br>
Special Projects <o:p></o:p></span></b></p>
</td>
<td width=226 valign=top style='width:169.5pt;padding:.7pt .7pt .7pt .7pt'>
<p class=MsoNormal style='margin-top:3.0pt;mso-element:frame;mso-element-frame-hspace:
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mso-element-anchor-horizontal:column;mso-height-rule:exactly'><span
style='font-size:8.0pt;font-family:"Calibri","sans-serif";color:navy'>Mobile:
415 810 2495 <br>
Office: 415 983-0603<br>
<u><a href="mailto:timothy.moore@iesve.com"><span style='color:navy'>timothy.moore@iesve.com</span></a></u><br>
</span><span style='font-family:"Calibri","sans-serif";color:#1F497D'><a
href="http://www.iesve.com/"><span style='font-size:8.0pt;color:navy'>www.iesve.com
</span></a></span><span style='font-size:8.0pt;font-family:"Calibri","sans-serif";
color:navy'><o:p></o:p></span></p>
</td>
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<tr style='page-break-inside:avoid'>
<td width=442 colspan=3 valign=top style='width:331.5pt;padding:.7pt .7pt .7pt .7pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;
line-height:115%;mso-element:frame;mso-element-frame-hspace:2.25pt;
mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:
column;mso-height-rule:exactly'><span style='font-size:8.0pt;line-height:
115%;font-family:"Calibri","sans-serif";color:navy'>**Design, Simulate +
Innovate with the <Virtual Environment>**</span><span style='font-family:
"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Peter Simmonds [mailto:peter.simmonds@ibece.net]
<br>
<b>Sent:</b> Tuesday, April 21, 2009 10:36 AM<br>
<b>To:</b> Timothy Moore; Karen Walkerman; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Bldg-sim] MRT Tool<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>I do not think the thermal comfort tool calculates the MRT it is a
user input.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
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<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><span
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color:gray'><br>
Senior Associate, Advanced Technology Group<br>
<br>
</span><span style='font-family:"Arial","sans-serif";color:gray'>IBE Consulting
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f: (818) 377-8230<br>
m: (818) 219-1284<o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Timothy Moore
[mailto:timothy.moore@iesve.com] <br>
<b>Sent:</b> Tuesday, April 21, 2009 10:00 AM<br>
<b>To:</b> Karen Walkerman; bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Bldg-sim] MRT Tool</span><o:p></o:p></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Karen,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The ASHRAE-55 Thermal Comfort Tool created by the UC Berkeley
Center for the Built Environment and available from ASHRAE publications (if I
recall correctly) includes a very easy-to-use MRT calculator for rectangular
rooms. It allows for MRT at a particular position in that room, separate
surface temperatures and dimensions for surfaces, and also the inclusion of a
“panel” or other area within one of the walls (such as a cold/hot
window, heating panel, etc.) that has a distinct temperature. This is part of a
very handy tool for determining PPD, etc. based upon the typical range of human
thermal comfort variables (clo value, activity level, air temp, MRT, humidity,
air movement).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Timothy<o:p></o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Karen
Walkerman<br>
<b>Sent:</b> Tuesday, April 21, 2009 9:50 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] MRT Tool<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hello,<br>
<br>
Is anyone aware of a simple Mean Radiant Temperature calculation tool?
I'm looking for something that will calculate MRT for a basic rectangular room.<br>
<br>
Thanks!<br>
<br>
--<br>
Karen<o:p></o:p></p>
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