<div>Okay--I would agree that a building the size of an entire city block is an extenuating circumstance. I wish you luck & sanity on managing this project.</div>
<div> </div>
<div>Keep us posted on how this model works for you, and yes I would assume (like you) that the zone quantities for V3.37 still do apply for V3.63</div>
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<div>Pasha</div>
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<div>p.s. I do not envy you for this project--but what a fun challenge none-the-less. ;)<br><br></div>
<div class="gmail_quote">On Tue, Mar 23, 2010 at 12:58 PM, James Hansen <span dir="ltr"><<a href="mailto:JHANSEN@ghtltd.com">JHANSEN@ghtltd.com</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">Thanks Pasha – I forgot to mention that the building I am modeling takes up an entire city block in DC. Hence the large number of zones. I’ve definitely cut it down to as few zones as I can without potentially sacrificing results.</span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">For reference, this was what Jeff Hirsch sent around about v3.37. I’m assuming it’s the same for v3.63, and it looks like you can now model 4000 spaces and 4000 zones (hopefully).</span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">I was just wondering if anyone had evidence that this is the case:</span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">For AutoCAD import and trace around (or just manually created floor plans,</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">spaces, or surfaces) the maximum number of vertices in 120. This version</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">also allows up to 4000 spaces and 8000 each for exterior walls, windows and</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">2000 air-side HVAC systems. A 1440 space run (with 792 exterior walls and 372</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">windows, 672 ground coupled surfaces, 4080 interior walls, 648 building shades, 720 air-side</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">AHU's) runs through BDL in 90 seconds and completes a year simulation, including</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">detail output reports, in just under 51 minutes on a Dell PWS450 (2.66GHz IX</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">processor and 1GB RAM) running Windows XP-Pro. This model (a 14 building campus)</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">was created with the new muti-shell, muti-HVAC Design Development wizard in </span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">less than an hour; of course the use of custom footprints and adjustments to space and</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">HVAC details (needed to represent a final design) will add substantial information collection</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: 'Courier New'; FONT-SIZE: 10pt">and eQUEST input time.</span></p>
<div class="im">
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
<p class="MsoNormal"><b><span style="COLOR: teal; FONT-SIZE: 11pt">GHT Limited<br></span></b><b><span style="FONT-SIZE: 11pt"><span style="COLOR: black">James Hansen</span></span></b><b><span style="COLOR: black; FONT-SIZE: 11pt">, PE, LEED AP</span></b></p>
<p class="MsoNormal"><b><span style="COLOR: black; FONT-SIZE: 10pt">Senior Associate</span></b><b><span style="COLOR: black; FONT-SIZE: 11pt"></span></b></p>
<p class="MsoNormal"><span style="FONT-SIZE: 7.5pt"><span style="COLOR: black">1010 N. Glebe Rd, Suite 200</span></span><span style="COLOR: #1f497d; FONT-SIZE: 11pt"></span></p>
<p class="MsoNormal"><span style="FONT-SIZE: 7.5pt"><span style="COLOR: black">Arlington</span><span style="COLOR: black">, </span><span style="COLOR: black">VA</span><span style="COLOR: black"> </span><span style="COLOR: black">22201-4749</span></span><span style="COLOR: black; FONT-SIZE: 11pt"></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">703-338-5754 (Cell)</span><span style="COLOR: black; FONT-SIZE: 11pt"></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">703-243-1200 (Office)</span><span style="COLOR: black; FONT-SIZE: 11pt"></span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">703-276-1376 (Fax)</span><span style="COLOR: black; FONT-SIZE: 11pt"></span></p>
<p class="MsoNormal"><span style="COLOR: teal; FONT-SIZE: 11pt"><a href="http://www.ghtltd.com/" target="_blank"><span style="FONT-SIZE: 10pt">www.ghtltd.com</span></a></span></p>
<p class="MsoNormal"><b><span style="COLOR: #31849b; FONT-SIZE: 11pt"> </span></b></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p></div>
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<p class="MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Pasha Korber-Gonzalez [mailto:<a href="mailto:pasha.pkconsulting@gmail.com" target="_blank">pasha.pkconsulting@gmail.com</a>] <br>
<b>Sent:</b> Tuesday, March 23, 2010 2:35 PM<br><b>To:</b> James Hansen<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Equest-users] Maximum spaces/zones in v 3.63?</span></p>
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<p class="MsoNormal">Hi James,</p></div>
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<p class="MsoNormal"> </p></div>
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<p class="MsoNormal">I can't confirm for you your question about allowable zones, but I did want to offer a couple of cents from my perspective...I hope that you are not planning to zone each space for each floor. This is what I call a simulation nightmare--primarily for you as the simulator, but also for anyone who is or will be reviewing your model.</p>
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<p class="MsoNormal"> </p></div>
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<p class="MsoNormal">The zones are specifically thermal zones, so where you have alike thermal characteristics you can zone these spaces together as one zone. Be mindful of zoning like spaces, but different perimeter exposures--for example you should not create a thermal zone that has both an east & south perimeter exposure because of the envelope loads that are experienced by these differing exposures.</p>
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<p class="MsoNormal"> </p></div>
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<p class="MsoNormal">Always try to simplify your models to work with as few zones as possible--from an input & file management standpoint. Remember the more inputs you have, the more you open the door for variable errors in your file. Sometimes the fewest possible zones might be in the 100's, or in the 10's range, but I personally would question any model that used more than 1000 zones for anything unless there were extenuating circumstances.</p>
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<p class="MsoNormal"> </p></div>
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<p class="MsoNormal">If you'd like some extra assistance or suggestions for your thermal zoning approach & input into eQuest, please contact me and send me some pdf's of your floor plans and I would be happy to help you.</p>
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<p class="MsoNormal"> </p></div>
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<p style="MARGIN-BOTTOM: 12pt" class="MsoNormal">Pasha</p></div>
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<p class="MsoNormal">On Tue, Mar 23, 2010 at 11:44 AM, James Hansen <<a href="mailto:JHANSEN@ghtltd.com" target="_blank">JHANSEN@ghtltd.com</a>> wrote:</p>
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<div>
<p class="MsoNormal">For those also subscribed to the bldg-sim list, you may have just seem Eric Sturm’s email with an updated spreadsheet comparing DOE2, eQuest, Trace and HAP.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I don’t think it’s up-to-date for eQuest, but something on the list scared me. eQuest isn’t still limited to 1024 zones is it?</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I’m working on a 19 story building with 100+ spaces per floor, and I’m hoping this isn’t still the case. I thought I remember seeing that since version 3.37, you’re allowed to have something like 4000 spaces.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Can anyone confirm? Would really suck to get ¾ of the way thru my model and realize I have to cut back on zoning.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks!</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"><b><span style="COLOR: teal">GHT Limited<br></span><span style="COLOR: black">James Hansen, PE, LEED AP</span></b></p>
<p class="MsoNormal"><b><span style="COLOR: black; FONT-SIZE: 10pt">Senior Associate</span></b></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">1010 N. Glebe Rd, Suite 200</span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">Arlington, VA 22201-4749</span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">703-338-5754 (Cell)</span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">703-243-1200 (Office)</span></p>
<p class="MsoNormal"><span style="COLOR: black; FONT-SIZE: 7.5pt">703-276-1376 (Fax)</span></p>
<p class="MsoNormal"><span style="COLOR: teal"><a href="http://www.ghtltd.com/" target="_blank"><span style="FONT-SIZE: 10pt">www.ghtltd.com</span></a></span></p>
<p class="MsoNormal"><b><span style="COLOR: #31849b"> </span></b></p>
<p class="MsoNormal"> </p></div></div>
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