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<DIV><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Yu,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>If you can’t change the altitude, what you can do is take your supply cfm, 60343 in this case, and divide it by the altitude factor which you can find in the top left corner of the SV-A report. So if your altitude factor was 1.2, you would input 50286 instead and you should get the 60343 cfm as your resulting supply flow. If you are using kW/cfm for your fan power, you would need to apply this same logic by multiplying your calculated kW/cfm by the altitude factor.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><div><p align=left class=MsoNormal style='text-align:left'><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Matthew Larson, LEED AP BD+C<br></span></b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Project Engineer<o:p></o:p></span></p><p align=left class=MsoNormal style='margin-bottom:12.0pt;text-align:left'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>Energy Solutions Group<b><o:p></o:p></b></span></p><p align=left class=MsoNormal style='text-align:left'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>E M C Engineers, Inc.<br>Eaton’s Electrical Services & Systems <br>143 Union Blvd, Suite 350<br>Lakewood, CO 80228<br>tel: +1 303 328-3419<br>mobile: +1 303 668-2511<br>fax: +1 303 974-1239<o:p></o:p></span></p><p align=left class=MsoNormal style='text-align:left'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><a href="mailto:MatthewRLarson@Eaton.com">MatthewRLarson@Eaton.com</a> <br><a href="http://www.eaton.com/energysolutions">www.eaton.com/energysolutions</a> <o:p></o:p></span></p><p align=left class=MsoNormal style='text-align:left'><span style='font-size:11.0pt;color:#1F497D'><img alt=image001 border=0 height=101 id="Picture_x0020_1" src="cid:image001.jpg@01CC4072.A7D64A70" width=198></span><span style='font-size:11.0pt;color:#1F497D'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p align=left class=MsoNormal style='text-align:left'><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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>??<br><b>Sent:</b> Monday, July 11, 2011 8:35 PM<br><b>To:</b> 'Keith Swartz'; equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] </span><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>答复</span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>: Problem of design flow rate autosize<o:p></o:p></span></p></div></div><p align=left class=MsoNormal style='text-align:left'><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Thanks Keith,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>I think that would be the reason but the program doesn’t allow me to change Altitude, it change back to blank after I input value and leave the box. User-Defined Default Value doesn’t ether (it did work for Latitude and Longitude input). My location in international -or- User-defined.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='color:#1F497D'>Yu Liu<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>+8615010414883<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>elaneinside@hotmail.com<o:p></o:p></span></p></div><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p align=left class=MsoNormal style='text-align:left'><b><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>发件人</span></b><b><span style='font-size:10.0pt;font-family:SimSun'>:</span></b><span style='font-size:10.0pt;font-family:SimSun'> Keith Swartz [mailto:kswartz@ecw.org] <br></span><b><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>发送时间</span></b><b><span style='font-size:10.0pt;font-family:SimSun'>:</span></b><span style='font-size:10.0pt;font-family:SimSun'> 2011</span><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>年</span><span style='font-size:10.0pt;font-family:SimSun'>7</span><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>月</span><span style='font-size:10.0pt;font-family:SimSun'>12</span><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>日</span><span style='font-size:10.0pt;font-family:SimSun'> 4:59<br></span><b><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>收件人</span></b><b><span style='font-size:10.0pt;font-family:SimSun'>:</span></b><span style='font-size:10.0pt;font-family:SimSun'> </span><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>刘宇</span><span style='font-size:10.0pt;font-family:SimSun'>; equest-users@lists.onebuilding.org<br></span><b><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>主题</span></b><b><span style='font-size:10.0pt;font-family:SimSun'>:</span></b><span style='font-size:10.0pt;font-family:SimSun'> RE: [Equest-users] Problem of design flow rate autosize<o:p></o:p></span></p></div></div><p align=left class=MsoNormal style='text-align:left'><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>Hello, Yu,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'>The difference may be due to eQUEST’S air density correction based on the elevation of your project location. The auto-calculated value is adjusted for the altitude. The air flow you enter is assumed to be at sea level (standard conditions). If this density correction calculation is causing the difference you see, then changing the elevation to 0 feet should get them to match. To change the elevation, in the Detailed Interface click on “Project & Site” in the upper left, then in the Component Tree on the left side double-click on “Site Data” (4<sup>th</sup> one down from the top). The field for Altitude is near the middle of the Basic Specifications tab.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;color:#1F497D'><o:p> </o:p></span></p><div><div><p align=left class=MsoNormal style='text-align:left'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>________________________________</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p><p align=left class=MsoNormal style='text-align:left'><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:PersonName><span style='color:#1F497D'>Keith Swartz</span></ns0:PersonName><span style='color:#1F497D'>, P.E., LEED AP</span></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p><p align=left class=MsoNormal style='text-align:left'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br>Energy Engineer / Senior Project Manager<br></span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:PlaceName><span style='color:#1F497D'>Energy</span></ns0:PlaceName><span style='color:#1F497D'> </span><ns0:PlaceType><span style='color:#1F497D'>Center</span></ns0:PlaceType><span style='color:#1F497D'> of </span><ns0:place><ns0:State><span style='color:#1F497D'>Wisconsin</span><span style='color:#1F497D;font-weight:normal'><br></span><span style='font-weight:normal'></ns0:State></span></ns0:place></span></b><ns0:Street><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:address><span style='color:#1F497D'>455 Science Drive, Suite 200, </span></ns0:address></ns0:Street></span><ns0:place><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:City><span style='color:#1F497D'>Madison</span></ns0:City><span style='color:#1F497D'>, </span><ns0:State><span style='color:#1F497D'>WI</span></ns0:State><span style='color:#1F497D'> </span><ns0:PostalCode><span style='color:#1F497D'>53711<br></span></ns0:PostalCode></ns0:place></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Phone: 608.238.8276 x123<br>Fax: 608.238.0523<br><br><b>The Buildings Team</b></span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p></div><div><p align=left class=MsoNormal style='text-align:left'><i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Design decisions through energy, economics and emissions analysis.</span></i><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><o:p></o:p></span></p></div><div><p align=left class=MsoNormal style='text-align:left'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a href="http://www.ecw.org/Buildings">www.ecw.org/Buildings</a> <o:p></o:p></span></p></div></div><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><br></span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><ns0:place><ns0:PlaceName><span style='color:#1F497D'>Energy</span></ns0:PlaceName><span style='color:#1F497D'> </span><ns0:PlaceType><span style='color:#1F497D'>Center</span></ns0:PlaceType><span style='color:#1F497D'> </span><ns0:PlaceType><span style='color:#1F497D'>University<br></span></ns0:PlaceType></ns0:place></span></b><i><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Your gateway to sustainable design training and online education programs.<br></span></i><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D'><a href="http://www.ecw.org/university/" title="http://www.ecw.org/university/"><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>www.ecw.org/university/</span></a></span><span style='font-size:11.0pt;color:#1F497D'><o:p></o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p align=left class=MsoNormal style='text-align:left'><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"'> </span><span lang=ZH-CN style='font-size:10.0pt;font-family:SimSun'>刘宇</span><span lang=ZH-CN style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> </span><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>[mailto:elaneinside@hotmail.com] <br><b>Sent:</b> Sunday, July 10, 2011 10:34 PM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] Problem of design flow rate autosize<o:p></o:p></span></p></div></div><p align=left class=MsoNormal style='text-align:left'><o:p> </o:p></p><p class=MsoNormal>Hi<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m trying to model baseline system 7 HVAC system using ‘Variable Air Volume’ system with zone HW reheat. When I leave design supply flow blank to let equest auto size, I have 60343 cfm supply flow and 320 unmet heat hour in system summary table. But when I input 60343 cfm in system design flow box and recalculate, then I have 105 unmet hours, and nothing else changed in system summary table. Is that a bug of software or there are some reason I don’t know.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Yu Liu<o:p></o:p></p><p class=MsoNormal>+8615010414883<o:p></o:p></p><p class=MsoNormal><a href="mailto:elaneinside@hotmail.com">elaneinside@hotmail.com</a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></DIV></BODY></HTML>