<div dir="ltr">Hi,<div><br></div><div>I am currently modelling a simple HVAC model on DesignBuilder. I need to run the simulation to obtain annual electricity consumption due to Cooling, Lighting and Interior Equipment for different construction materials. For some reason, while all the input is the same apart from the U value for the external wall, the electricity end-use for lighting and interior equipment changes as follows:</div><div><br></div><div><table border="0" cellpadding="0" cellspacing="0" width="203" style="border-collapse:collapse;width:152pt">
<colgroup><col width="64" span="2" style="width:48pt">
<col width="75" style="width:56pt">
</colgroup><tbody><tr height="20" style="height:15pt">
<td height="20" class="gmail-xl63" width="64" style="height:15pt;width:48pt;text-align:center;vertical-align:middle;border:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">U value</td>
<td class="gmail-xl63" width="64" style="border-left:none;width:48pt;text-align:center;vertical-align:middle;border-top:0.5pt solid windowtext;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">Lighting</td>
<td class="gmail-xl63" width="75" style="border-left:none;width:56pt;text-align:center;vertical-align:middle;border-top:0.5pt solid windowtext;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">Equipment</td>
</tr>
<tr height="20" style="height:15pt">
<td height="20" class="gmail-xl63" style="height:15pt;border-top:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;border-left:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">2.04</td>
<td class="gmail-xl63" style="border-top:none;border-left:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">496.38</td>
<td class="gmail-xl63" style="border-top:none;border-left:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">885.89</td>
</tr>
<tr height="20" style="height:15pt">
<td height="20" class="gmail-xl63" style="height:15pt;border-top:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;border-left:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">2</td>
<td class="gmail-xl63" style="border-top:none;border-left:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">494.72</td>
<td class="gmail-xl63" style="border-top:none;border-left:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">880.84</td>
</tr>
<tr height="20" style="height:15pt">
<td height="20" class="gmail-xl63" style="height:15pt;border-top:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;border-left:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">1.85</td>
<td class="gmail-xl63" style="border-top:none;border-left:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">487.9</td>
<td class="gmail-xl63" style="border-top:none;border-left:none;text-align:center;vertical-align:middle;border-right:0.5pt solid windowtext;border-bottom:0.5pt solid windowtext;padding-top:1px;padding-right:1px;padding-left:1px;color:black;font-size:11pt;font-family:Calibri,sans-serif;white-space:nowrap">860.3</td>
</tr>
</tbody></table></div><div><br></div><div><div>The LPD and Equipment Power Density remains the same with the same schedule, why is the annual electricity consumption changing? </div>--<br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div style="font-size:small">Thanks and Regards</div><div style="font-size:small"><font color="#444444" face="tahoma, sans-serif" size="1">Kiran K Ghosh</font></div><div style="font-size:small"><font color="#444444" face="tahoma, sans-serif" size="1">+919582904515</font></div><div style="font-size:small"><font color="#444444" face="tahoma, sans-serif" size="1">+918152036434</font></div><div style="font-size:small"><font color="#444444" face="tahoma, sans-serif" size="1"><a href="mailto:kirankghosh31@gmail.com" target="_blank">kirankghosh31@gmail.com</a></font></div></div></div></div></div>