<div>Hello -</div>
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<div>I am new to eQuest and have been trying to model a sports center in the DD Wizard. I created the basic plan in autoCAd and was able to trace it in eQuest. The building has multiple roof heights (flat roof).</div>
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<div>My question are:</div>
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<div>1) how do we model a building with differnt roof levels.</div>
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<div>Thank You.</div>
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<div>Pranita.<br><br><br></div>
<div class="gmail_quote">On Fri, Aug 13, 2010 at 3:19 PM, Rimes, Christie <span dir="ltr"><<a href="mailto:Christie.Rimes@wspfk.com">Christie.Rimes@wspfk.com</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">No, just specifying the natural ventilation in the Nat Vent Tab will be sufficient. If you also increase the infiltration than you are effectively doubling the natural ventilation and you will allow OA into the space when temperature conditions may not be suitable. </span></p>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"><img alt="Christie Rimes,
Building Simulation Analyst
WSP Flack + Kurtz
405 Howard Street, Suite 500
San Francisco, CA 94105
Direct: 415.402.2727
Main Tel: 415.398.3833
Fax: 415.433.5311
website: http://www.wspfk.com
vCard: http://vcards.wspfk.com/vcardloader.php?filename=flackkurtz-christie-rimes-wspfk-com-1255981339.vcf
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<p class="MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Kevin Kyte [mailto:<a href="mailto:KKyte@watts-ae.com" target="_blank">KKyte@watts-ae.com</a>] <br><b>Sent:</b> Friday, August 13, 2010 12:14 PM<br>
<b>To:</b> Rimes, Christie; Zhen Tian
<div class="im"><br><b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br></div><b>Subject:</b> RE: [Bldg-sim] LEED & Natural Ventilation</span>
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<p class="MsoNormal"><span style="COLOR: navy; FONT-SIZE: 10pt">Should you also complement this with changing the space infiltration schedules as well?</span></p>
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<p class="MsoNormal"><span style="COLOR: navy; FONT-SIZE: 10pt">Kevin</span></p>
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<p class="MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Rimes, Christie [mailto:<a href="mailto:Christie.Rimes@wspfk.com" target="_blank">Christie.Rimes@wspfk.com</a>] <br><b>Sent:</b> Thursday, August 12, 2010 6:55 PM<br>
<b>To:</b> Zhen Tian<br><b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Bldg-sim] LEED & Natural Ventilation</span></p></div>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">To include natural ventilation in a model all you need to do is fill out the Natural Ventilation Tab at the System level under OA as follows. All inputs have good descriptions of what needs to be entered so you shouldn’t have a problem defining your system.</span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">I am still currently building the model so am not sure if I am going to come up with any errors. </span></p>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> <img width="732" height="548"></span></p>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt"><img alt="Christie Rimes,
Building Simulation Analyst
WSP Flack + Kurtz
405 Howard Street, Suite 500
San Francisco, CA 94105
Direct: 415.402.2727
Main Tel: 415.398.3833
Fax: 415.433.5311
website: http://www.wspfk.com
vCard: http://vcards.wspfk.com/vcardloader.php?filename=flackkurtz-christie-rimes-wspfk-com-1255981339.vcf
image: " width="591" height="170"></span></p>
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<p class="MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Zhen Tian [mailto:<a href="mailto:tianzhen9@yahoo.com" target="_blank">tianzhen9@yahoo.com</a>] <br><b>Sent:</b> Tuesday, August 10, 2010 10:21 AM<br>
<b>To:</b> Rimes, Christie<br><b>Subject:</b> Re: [Bldg-sim] LEED & Natural Ventilation</span></p></div>
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<p class="MsoNormal">Hi Chris,<br><br>Regarding the natural ventilation in eQUEST, how do we use the S-G function? I cannot find any information in the DOE2.2 manual. Would you please share more information?<br><br>Thank you very much.<br>
<br>Regards,<br><br>David<br><br>--- On <b>Fri, 7/30/10, Rimes, Christie <i><<a href="mailto:Christie.Rimes@wspfk.com" target="_blank">Christie.Rimes@wspfk.com</a>></i></b> wrote:</p>
<p style="MARGIN-BOTTOM: 12pt" class="MsoNormal"><br>From: Rimes, Christie <<a href="mailto:Christie.Rimes@wspfk.com" target="_blank">Christie.Rimes@wspfk.com</a>><br>Subject: Re: [Bldg-sim] LEED & Natural Ventilation<br>
To: "Chris" <<a href="mailto:floodyc@gmail.com" target="_blank">floodyc@gmail.com</a>><br>Cc: "<a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a>" <<a href="mailto:Bldg-sim@lists.onebuilding.org" target="_blank">Bldg-sim@lists.onebuilding.org</a>><br>
Date: Friday, July 30, 2010, 2:40 AM</p>
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<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt">eQuest, TAS and IES, I know can model natural ventilation. In IES and TAS you can actually model the operation of the windows by defining limits on indoor temperature, wind speeds etc. eQuest is a little more basic where you can use a S-G function for infiltration which calculates higher infiltration rates based on outside wind conditions. eQuest then calculates if indoor temperatures will be kept between the indoor temperatures based on the outside conditions. If yes than it will shut off the mechanical system and calculate 0 energy for that hour.</span></p>
<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt">Therefore in programs like IES and TAS you may be able to keep conditions below the set point even if the outdoor temperatures are hotter due to air movement etc. You may also want to come to an agreement with the client to allow a slightly higher set point, however you will need to also apply this to the baseline model. Otherwise for LEED, you can’t take account for the hours were naturally ventilation doesn’t provide comfort. Also note that the unmet load hours can be a maximum of 300 hours so potentially you could take credit for 300 hours for natural ventilation even if it is above the set point. </span></p>
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<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt"><img alt="Christie Rimes,
Building Simulation Analyst
WSP Flack + Kurtz
405 Howard Street, Suite 500
San Francisco, CA 94105
Direct: 415.402.2727
Main Tel: 415.398.3833
Fax: 415.433.5311
website: http://www.wspfk.com
vCard: http://vcards.wspfk.com/vcardloader.php?filename=flackkurtz-christie-rimes-wspfk-com-1255981339.vcf
image: " width="591" height="170"></span></p>
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<p><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> Chris [mailto:<a href="mailto:floodyc@gmail.com" target="_blank">floodyc@gmail.com</a>] <br><b>Sent:</b> Thursday, July 29, 2010 11:24 AM<br>
<b>To:</b> Rimes, Christie<br><b>Cc:</b> <a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Bldg-sim] LEED & Natural Ventilation</span></p></div>
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<p><span style="FONT-FAMILY: 'Comic Sans MS'; COLOR: #000066">And how did you model the natural ventilation?</span></p></div>
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<p style="MARGIN-BOTTOM: 12pt"><span style="FONT-FAMILY: 'Comic Sans MS'; COLOR: #000066">In summer when external temperatures are above the room setpoint natural ventilation during the day would not provide any cooling.</span></p>
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<p>On Thu, Jul 29, 2010 at 11:19, Rimes, Christie <<a href="http://mc/compose?to=Christie.Rimes@wspfk.com" target="_blank">Christie.Rimes@wspfk.com</a>> wrote:</p>
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<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt">I am currently doing a naturally ventilated building for LEED and I believe that if the space is achieving indoor temperatures between the given set point using natural ventilation than the mechanical system energy is 0 for the proposed design. Any hours where natural ventilation can’t achieve indoor temperatures within the set points, a mechanical system needs to be modeled even if there isn’t one in the proposed building. This helps keep the unmet hours within the requirements for LEED.</span></p>
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<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt">Cheers,</span></p>
<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt"><img border="0" alt="Christie Rimes,
Building Simulation Analyst
WSP Flack + Kurtz
405 Howard Street, Suite 500
San Francisco, CA 94105
Direct: 415.402.2727
Main Tel: 415.398.3833
Fax: 415.433.5311
website: http://www.wspfk.com
vCard: http://vcards.wspfk.com/vcardloader.php?filename=flackkurtz-christie-rimes-wspfk-com-1255981339.vcf
image: " width="591" height="170"></span></p>
<p><span style="COLOR: #1f497d; FONT-SIZE: 11pt"> </span></p>
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<p><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> <a href="http://mc/compose?to=bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a> [mailto:<a href="http://mc/compose?to=bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Chris<br>
<b>Sent:</b> Thursday, July 29, 2010 11:13 AM<br><b>To:</b> <a href="http://mc/compose?to=bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> [Bldg-sim] LEED & Natural Ventilation</span></p>
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<p><span style="FONT-FAMILY: 'Comic Sans MS'; COLOR: #000066">All,</span></p></div>
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<p><span style="FONT-FAMILY: 'Comic Sans MS'; COLOR: #000066">we regularly design and model buildings which rely in part on natural ventilation as a source of free cooling. The issue we are often faced with is how to capture this benefit when performing a LEED Appendix G analysis. Appendix G states that all conditioned spaces must have BOTH heating and cooling. We would like to remove mechanical coolig in the proposed design building and thus gain benefit when comparing to the mechanical cooling system in the reference baseline building.</span></p>
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<p><span style="FONT-FAMILY: 'Comic Sans MS'; COLOR: #000066">Has anyone tackled this issue and come to a satisfactory resolution? </span></p></div>
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<p><span style="FONT-FAMILY: 'Comic Sans MS'; COLOR: #000066">Thanks for your help.</span></p></div>
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<p><br clear="all"><br>-- <br>Chris Flood BSc (Eng)<br>Senior Building Analyst & Energy Modeller</p></div></div></div></div></div></div>
<p><br><br clear="all"><br>-- <br>Chris Flood BSc (Eng)<br>Senior Building Analyst & Energy Modeller</p></div></div>
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Carnegie Mellon University<br>MS in Sustainable Design 2009<br><a href="mailto:pkothuru@andrew.cmu.edu">pkothuru@andrew.cmu.edu</a><br>