<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Corey, <div><br></div><div>You may also want to look at your ground temperatures. DB uses a default 14C as monthly averages for the whole year. Ideally you would use E+ SLAB to calculate ground temperatures for your specific project. On larger buildings and depending on climate, lower ground temperatures normally increase the heating loads. However if one uses E+ recommended approximation Ti - 2C (for larger footprints), on a smaller footprint you do get those kinds of results. Otherwise, if you send me your DB file I may be able to help. </div><div><br></div><div>Best,</div><div><br></div><div>Diego</div><div><br></div><div><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Calibri; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><font class="Apple-style-span" color="#595959" face="Calibri, sans-serif" size="3"><span class="Apple-style-span" style="font-size: 13px; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; color: rgb(0, 0, 0); font-family: Calibri; font-size: medium; "><font class="Apple-style-span" color="#595959" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">--<o:p></o:p></span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(0, 0, 0); "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="font-size: 13px; "><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-size: 18px; "><span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="font-family: Helvetica; font-size: 16px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="font-size: 13px; "><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="font-family: Helvetica; font-size: 16px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="font-size: 13px; "><span class="Apple-style-span" style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 16px; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; "><b>Diego Ibarra</b></span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; "><b><br></b>MDesS | LEEDŽAP BD+C<br></span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Doctoral Student</span></font></div></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><span><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Fulbright Scholar</span></font></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Sustainable Design</span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><span><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Harvard University</span></font></span></div><div><font class="Apple-style-span" face="Calibri"><span class="Apple-style-span" style="font-size: medium;"><font class="Apple-style-span" color="#595959" size="3"><span class="Apple-style-span" style="font-size: 13px;"><br></span></font></span></font></div></span></span></font></div></div></div></span></div></span></span></font></div></div></div></div></span></div></div></div></div></div></span></span></span></font></div></span></font></div></span></div><div>
</div>
<br><div><div>On Oct 13, 2010, at 4:35 AM, Diego Ibarra wrote:</div><br class="Apple-interchange-newline"><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Corey, <div><br></div><div>You may also want to look at your ground temperatures. DB uses a default 14C as monthly averages for the whole year. Ideally you would use E+ SLAB to calculate ground temperatures for your specific project. On larger buildings and depending on climate, lower ground temperatures normally increase the heating loads. However if one uses E+ recommended approximation Ti - 2C (for larger footprints), on a smaller footprint you do get those kinds of results. Otherwise, if you send me your DB file I may be able to help. </div><div><br></div><div>Best,</div><div><br></div><div>Diego</div><div><br></div><div>
<span class="Apple-style-span" style="border-collapse: separate; font-family: Calibri; font-size: medium; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><font class="Apple-style-span" color="#595959" face="Calibri, sans-serif" size="3"><span class="Apple-style-span" style="font-size: 13px;"><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; color: rgb(0, 0, 0); font-family: Calibri; font-size: medium; "><font class="Apple-style-span" color="#595959" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">--<o:p></o:p></span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; color: rgb(0, 0, 0); "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="font-size: 13px; "><span class="Apple-style-span" style="font-size: 18px; "><span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="font-family: Helvetica; font-size: 16px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="font-size: 13px; "><span class="Apple-style-span" style="font-size: 12px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="font-family: Helvetica; font-size: 16px; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; font-size: 12pt; font-family: 'Times New Roman', serif; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="font-size: 13px; "><span class="Apple-style-span" style="font-family: Helvetica; font-size: 16px; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; "><b>Diego Ibarra</b></span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; "><b><br></b>MDesS | LEEDŽAP BD+C<br></span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Doctoral Student</span></font></div></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><span><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Fulbright Scholar</span></font></span></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Sustainable Design</span></font></div><div style="margin-top: 0in; margin-right: 0in; margin-left: 0in; margin-bottom: 0.0001pt; "><span><font class="Apple-style-span" color="#595959" face="Calibri" size="3"><span class="Apple-style-span" style="background-color: transparent; font-size: 13px; ">Harvard University</span></font></span></div></span></span></font></div></div></div></span></div></span></span></font></div></div></div></div></span></div></div></div></div></div></span></span></span></font></div></span></font></div></span></div><div><br class="webkit-block-placeholder"></div><div><br></div><div><div>On Oct 12, 2010, at 10:34 PM, Cory Estep wrote:</div><br class="Apple-interchange-newline"><div>Good Evening Everyone:<br>I have a question about high cooling loads I am getting in my simulation. I have developed a simulation in Design Builder, using Energy+ as the simulation engine. It has been developed acording to ASHRAE 90.1-2007 AppG, and it is for a leased space of 11,000+ SF. Additionally, I specified System #4 - PSZ-HP.</div>
<div>I double checked my weather file, equipment loads, and lighting loads, and they are within range. However, my cooling loads are almost 4 times as high as my heating (Heating = 3.4 kbtu/sqft-yr & Cooling = 12.4 kbtu/sqft-yr).</div>
<div>My major concern with this is that when I use CBECS as a reference the heating and cooling loads are almost reversed from what I am getting. </div>
<div>I have read over the Design Builder Users Manual to verify that I have not overlooked anything, but I am at a loss...</div>
<div>My simulation may be correct, however I did want to get a second opinion. Any information or suggestions is appreciated.</div>
<div> </div>
<div>Thanks,</div>
<div>Cory Estep</div>
<div>MARCH/MSSD Candidate</div>
<div>The Catholic University of America</div>
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