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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>For what it’s worth, the example LS-F report in the help file documentation also shows only 0’s in the roof component. From within eQuest, go to the Help menu, select DOE-2 Help. Expand the “Volume 4: Libraries & Reports” and then the “Reports” topics. LS-E and LS-F are under the loads reports. The text says the monthly space components are summed across spaces. The definition of the LS-F report excludes plenum spaces:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:12.0pt;font-family:"Times New Roman","serif";color:windowtext'>This report gives a breakdown of loads on a monthly basis for the entire building, according to the source of the load. The loads in unconditioned spaces (ZONE-TYPE = UNCONDITIONED or PLENUM) are not included; all entries are in millions of Btu/month.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>This just explains why they don’t show up in the LS-F…I believe that the mechanism used by eQuest to account for heat gain in the plenums is to apply that heat gain to the return air before the system, thereby increasing temperature, humidity, etc. in the RA stream due to the loads in the plenum spaces connected to a given system. Someone from Hirsch can jump in if I got that wrong.<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’m curious if anyone else has dug deeper on this than I have, though?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><b><span style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:#1F497D'>Jeremy R. Poling, PE, LEED AP+BDC</span></b><span style='color:#1F497D'><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 class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Bruce Easterbrook<br><b>Sent:</b> Thursday, September 08, 2011 10:09 AM<br><b>To:</b> Jonathan Smith<br><b>Cc:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] Roof vs Exterior Wall Load<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal> To tell the truth I haven't a clue. You would think the sums would agree. I did open one of my sim's and summed the roof components for all my zones from the LS-E report and found the sum didn't match the figure in the LS-F report, it was much higher. I rarely use these reports and hadn't noticed this before. eQuest does treat roofs as horizontal walls but on my sim I know I didn't do any modifications which might have mixed things up. I took a look at the "Detailed Simulation Reports Summary" and there was nothing which stood out as an explanation. So the quickest thing to do is pass this back to the group to see if we can find an answer.<br>Bruce<br><br>On 08/09/2011 09:33 AM, Jonathan Smith wrote: <o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Hi Bruce:</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Thanks you for your reply. </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>The LS-F report I’m reviewing is a building wide report which should be inclusive of all spaces. As stated previously, MBTUs through ROOF components is listed as zero. However, the space level report (LS-E) for the one of the plenums with a roof component shows heat loss of the roof component. This is true for some of the other plenum spaces. Any ideas why the space level report (LS-E) ROOF components are not reported on the building wide report (LS-F) as roof components?</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Jonathan</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'> Bruce Easterbrook [<a href="mailto:bruce5@bellnet.ca">mailto:bruce5@bellnet.ca</a>] <br><b>Sent:</b> Wednesday, September 07, 2011 9:08 AM<br><b>To:</b> Jonathan Smith<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Equest-users] Roof vs Exterior Wall Load</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><span style='font-size:13.5pt'>In the room space the roof is actually the ceiling. Because the room and plenum spaces are close or the same temperature there is minimal or no heat loss between them. You need to go to the plenum space for the heat loss through the exterior roof. If you want the heat loss for the full floor to floor space you have to add the room and plenum losses. The plenum will have some wall surfaces as well.<br>Bruce Easterbrook P.Eng.<br>Abode Engineering<br></span><br>On 06/09/2011 01:46 PM, Jonathan Smith wrote: <o:p></o:p></p><p class=MsoNormal>RE: Detailed Report, LS-F Building Monthly Load Components <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Why would roof heat losses be zero in a model defined with plenum spaces that have roofs components? In report LS-F, there are no losses reported in ‘Roof’ and ‘Wall’ heat losses seem exceptionally high, as if ‘Roof’ losses are reported in ‘Walls’. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>All spaces were created using the eQuest wizard mode. Inspecting the “exterior surface properties”, the word “Roof” appears below the surface name. All roof constructions are made with layers input, having a U-Value 0f 0.043. When creating exterior surfaces in detailed edit mode, no option exists for defining an exterior surface as a roof or wall. <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>So, how are the loads associated with roofs reporting in LS-F? What other reasons might roof loads not report, or at least not report in the correct load component?<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif"'>Jonathan R. 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