I agree with Bill, in general. For me it is easiest to start with the DD wizard and very carefully us it to the hilt related to spaces and their associated thermal zones. Use it under advisement for the HVAC zones & equipment. Then I move into Detailed edit. Lastly, I confirm it all using BDL, But that's cause I'm an old fart (not as old as John Aulbach, though). As long as you have the R-value you want between your house and the outside some where, ceiling or roof, you are close. Remember always UA delta T = Q. I love pretty pictures, too, though.<br>
<br>Mea culpa to all, or whatever,<br><br>Carol Gardner, PE<br><br>PS I have a Master's degree! In science....<br><br><div class="gmail_quote">On Mon, May 24, 2010 at 8:53 AM, Bishop, Bill <span dir="ltr"><<a href="mailto:wbishop@pathfinder-ea.com">wbishop@pathfinder-ea.com</a>></span> wrote:<br>
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<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Jacob,</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">It is much easier to make changes to
thermal zone definitions in the wizard than in the detailed edit mode. As a
rule, do the best you can defining the zones in the wizard before you spend
time making changes in DD edit mode, since these changes will be undone if you
go back into the wizard later.</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">For the vaulted ceiling roof zone, I would
put the ceiling back and make it “air wall” construction to model
heat transfer between the roof zone and the zone below. Change the roof zone to
conditioned (assuming the wizard left it as unconditioned) and assign it to the
same HVAC system as the zone below.</span></font></p>
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<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Regards,</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;">Bill</span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span style="font-size: 10pt; font-family: Arial; color: navy;"> </span></font></p>
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<p class="MsoNormal"><b><font color="black" face="Franklin Gothic Medium Cond" size="2"><span style="font-size: 10pt; font-family: "Franklin Gothic Medium Cond"; color: black; font-weight: bold;">William Bishop, EIT, BEMP, LEED<sup>®</sup>
AP </span></font></b><b><font color="#006600" face="Franklin Gothic Medium Cond" size="2"><span style="font-size: 10pt; font-family: "Franklin Gothic Medium Cond"; color: rgb(0, 102, 0); font-weight: bold;">|</span></font></b><b><font color="black" face="Franklin Gothic Medium Cond" size="2"><span style="font-size: 10pt; font-family: "Franklin Gothic Medium Cond"; color: black; font-weight: bold;"> </span></font></b><b><font color="black" face="Franklin Gothic Medium Cond" size="2"><span style="font-size: 10pt; font-family: "Franklin Gothic Medium Cond"; color: black; font-weight: bold;">Pathfinder
Engineers & Architects LLP</span></font></b><b><font color="black" face="Franklin Gothic Medium Cond" size="2"><span style="font-size: 10pt; font-family: "Franklin Gothic Medium Cond"; color: black; font-weight: bold;"></span></font></b></p>
<p class="MsoNormal"><font color="black" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: black;">Mechanical Engineer</span></font></p>
<p class="MsoNormal"><font color="black" face="Arial" size="1"><span style="font-size: 5pt; font-family: Arial; color: black;"> </span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: navy;">134 South Fitzhugh Street</span></font><font color="navy" size="1"><span style="font-size: 9pt; color: navy;"><br>
</span></font><font color="navy" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: navy;">Rochester</span></font><font color="navy" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: navy;">, NY 14608</span></font><font color="navy" size="1"><span style="font-size: 9pt; color: navy;"><br>
</span></font><font color="navy" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: navy;">T: (585) 325-6004 </span></font><font color="black" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: black;">Ext. 114</span></font><font color="navy" size="1"><span style="font-size: 9pt; color: navy;"><br>
</span></font><font color="navy" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: navy;">F: (585) 325-6005</span></font><font color="black" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: black;"></span></font></p>
<p class="MsoNormal"><font color="black" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: black;"><a href="mailto:wbishop@pathfinder-ea.com" target="_blank">wbishop@pathfinder-ea.com</a></span></font></p>
<p class="MsoNormal"><font color="black" face="Arial" size="1"><span style="font-size: 9pt; font-family: Arial; color: black;"><a href="http://www.pathfinder-ea.com" target="_blank">www.pathfinder-ea.com</a></span></font><font color="navy"><span style="color: navy;"></span></font></p>
<p class="MsoNormal"><font color="green" face="Webdings" size="5"><span style="font-size: 18pt; font-family: Webdings; color: green;">P</span></font><font color="green"><span style="color: green;"> </span></font><font color="green" size="1"><span style="font-size: 7.5pt; color: green;">May is National Bike
Month. Bike to Work Day May 21<sup>st</sup>.</span></font><font color="green"><span style="color: green;"></span></font></p>
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<p class="MsoNormal"><b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font face="Tahoma" size="2"><span style="font-size: 10pt; font-family: Tahoma;">
<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b><span style="font-weight: bold;">On Behalf Of </span></b>Jacob Faiola<br>
<b><span style="font-weight: bold;">Sent:</span></b> Monday, May 24, 2010 11:35
AM<br>
<b><span style="font-weight: bold;">To:</span></b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b> [Equest-users] modifying
a shell created in the wizard</span></font></p>
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<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">I have done substantial customizing of a
wizard-created shell to match construction drawings.</span></font></p>
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<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">For example, I deleted a ceiling to make
a vaulted ceiling and completely redid the rooflines in the detailed interface.</span></font></p>
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<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">Do I need to redefine the thermal
zones/spaces now?</span></font></p>
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<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">The air-side HVAC tab shows the same old
roof zone (thermal zone that covers the entire footprint of the house between the
wizard-created roof and ceiling) that doesn't exist anymore.</span></font></p>
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<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">thanks,</span></font></p>
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<p class="MsoNormal"><font color="black" face="Arial" size="3"><span style="font-size: 12pt; font-family: Arial; color: black;">Jacob</span></font></p>
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<br></blockquote></div><br><br clear="all"><br>-- <br>Carol Gardner PE<br>
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