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style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><FONT
face="Times New Roman">What is the best way to model a radiant cooling
(thermo-active slab) system for a commercial building?<?xml:namespace prefix = o
ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0in 0in 0pt; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><o:p><FONT
face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal
style="MARGIN: 0in 0in 0pt; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><FONT
face="Times New Roman">In the past I have attempted to mimic this system with
Equest by using a fan coil system, eliminating fan energy, and then handling OA
requirements in a “dummy” zone.<SPAN style="mso-spacerun: yes">
</SPAN>Please let me know if you have any suggestions and/or papers that discuss
modeling radiant cooling using this technique or any other technique
(EnergyPlus?).<o:p></o:p></FONT></SPAN></P>
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style="MARGIN: 0in 0in 0pt; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><o:p><FONT
face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal
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style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><FONT
face="Times New Roman">Also, does anyone have experience or comments on TAS?
<SPAN style="mso-spacerun: yes"> </SPAN>The software’s web site claims to
be capable of modeling radiant cooling however when I reviewed some literature
on the subject it appeared to be a bit limited. <SPAN
style="mso-spacerun: yes"> </SPAN>For example, a major drawback to modeling
radiant cooling in TAS is the temperature or operation of the radiant cavity
cannot be controlled by the space temperature. Therefore the operation has to be
controlled by on/off schedule in the equipment schedule. <SPAN
style="mso-spacerun: yes"> </SPAN>This seems a bit questionable when
analyzing annual energy use but maybe this is the best approach available. <SPAN
style="mso-spacerun: yes"> </SPAN>It seems, at a minimum, it would be a
good way to check peak cooling loads against the previously discussed Equest
mimic. <SPAN
style="mso-spacerun: yes"> </SPAN><o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal
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style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><o:p><FONT
face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal
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style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><FONT
face="Times New Roman">Anyway… thanks in advance for the
help.<o:p></o:p></FONT></SPAN></P>
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style="MARGIN: 0in 0in 0pt; mso-layout-grid-align: none"><SPAN
style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><o:p><FONT
face="Times New Roman"> </FONT></o:p></SPAN></P>
<P class=MsoNormal
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style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><FONT
face="Times New Roman">Dan Sobrinski<o:p></o:p></FONT></SPAN></P>
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style="FONT-SIZE: 10pt; COLOR: windowtext; FONT-FAMILY: TimesNewRoman; mso-bidi-font-family: TimesNewRoman"><FONT
face="Times New Roman">Econergy<o:p></o:p></FONT></SPAN></P></FONT></DIV></DIV><PRE>
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