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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Mark,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Are you in one of RWDI’s Canadian offices? If so, are you reviewing an EE4 model that has heat recovery on a make-up air system serving fan coils or heat pumps?
EE4 uses a work around to approximate heat recovery for make-up air systems serving fan coils and heat pumps. EE4 defines a “dummy” zone served by the make-up air system then uses the OA-FROM-SYSTEM keywork in each fan coil/heat pump zonal system. To approximate
the effectiveness of the heat recovery, EE4 reduces the specified outdoor air by (1-HReef). For example, if the make-up air system is design to provide 10,000 cfm of outdoor and the specified heat recovery effectiveness is 70%, then the modeled outdoor air
will be 10,000 * (1-0.7) = 3,000 cfm. This, in addition to the other issues raised by the egroup make it difficult to review the .sim file to determine the accuracy of the model.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><img width="108" height="43" id="Picture_x0020_2" src="cid:image002.png@01D1080B.C9555410" alt="cid:image003.png@01D09C46.E75BA0D0"></span><b><span style="color:#1C467A"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1C467A">Christopher Jones,</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">
</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">P.Eng.<i>
<br>
</i></span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Senior Engineer<b><o:p></o:p></b></span></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">WSP Canada Inc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">2300 Yonge Street, Suite 2300<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Toronto, ON M4P 1E4</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#595959"><br>
</span><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">T +1 416-644-4226<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">F +1 416-487-9766<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">C +1 416-697-0056<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><a href="http://www.wspgroup.com/"><span style="color:blue">www.wspgroup.com</span></a>
</span><i><span lang="EN-CA" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#565656"><o:p></o:p></span></i></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><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 [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Mark Hallman<br>
<b>Sent:</b> Friday, October 16, 2015 11:27 AM<br>
<b>To:</b> 'Shaun Martin'; 'Keith Swartz'; 'Porter, Frederick NOR'; 'Nathan Miller'; 'Daniel Knapp'; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif"">Thanks for all the helpful comments, folks.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif"">Is there anyway of parsing this out without having the model available, just the SIM files? I’m reviewing results as a 3<sup>rd</sup> party but don’t have access to the model
nor the hourly results. What I’ve been doing so far is:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Arial","sans-serif"">Cooling Load without OA</span></b><span style="font-size:8.0pt;font-family:"Arial","sans-serif""> = LS-C cooling load
<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Arial","sans-serif"">Cooling Load with OA =</span></b><span style="font-size:8.0pt;font-family:"Arial","sans-serif""> Plant Cooling Load (SS-D report) + System Cooling Load (Max Cooling elec
load from SS-H report)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif"">Tx!<br>
Mark.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">mark hallman<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">p.eng. leed ap bd&c<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">project engineer<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><a href="mailto:mdh@rwdi.com"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:blue">mdh@rwdi.com</span></a><span style="font-size:7.5pt;font-family:"Arial","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">519 823 1311 x2494<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">RWDI: the science of buildings, structures & the environment. See what we do
</span><a href="http://www.rwdi.com/#!services3/c1h0m"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:blue">HERE</span></a><span style="font-size:7.5pt;font-family:"Arial","sans-serif"">.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:8.0pt;font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
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<p class="MsoNormal"><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 [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Shaun Martin<br>
<b>Sent:</b> Thursday, October 15, 2015 13:11<br>
<b>To:</b> 'Keith Swartz'; 'Porter, Frederick NOR'; 'Nathan Miller'; 'Daniel Knapp';
<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">With MIN-AIR-SCH, you have to zero out all zone exhausts, because exhaust overrides the schedule. And, almost every building I work on has ventilation heat recovery, which affects the mixed air temp. I’m not
quite sure what will happen at MIN-AIR-SCH =.001. Be careful with the control strategy.<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">Shaun Martin LEED-AP, BEMP<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Principal<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Shaun Martin Consulting<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">#90 – 425 Carrall Street<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Vancouver, BC V6B 6E3<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">p. 604-789-1095<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"></a><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Keith Swartz<br>
<b>Sent:</b> Thursday, October 15, 2015 6:51 AM<br>
<b>To:</b> Porter, Frederick NOR <<a href="mailto:fporter@noresco.com">fporter@noresco.com</a>>; Nathan Miller <<a href="mailto:nathanm@rushingco.com">nathanm@rushingco.com</a>>; Daniel Knapp <<a href="mailto:danielk@arborus.ca">danielk@arborus.ca</a>><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] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoPlainText">Here are details from the help screen:<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><img border="0" width="911" height="224" id="Picture_x0020_1" src="cid:image003.png@01D1080B.C9555410" alt="cid:image001.png@01D10805.42E90080"><o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Keith Swartz, PE | Senior Energy Engineer<o:p></o:p></p>
<p class="MsoPlainText">Seventhwave | Madison.Chicago.Minneapolis<o:p></o:p></p>
<p class="MsoPlainText">608.210.7123 seventhwave.org<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<br>
From: Porter, Frederick NOR [<a href="mailto:fporter@noresco.com">mailto:fporter@noresco.com</a>]
<br>
Sent: Wednesday, October 14, 2015 11:46 AM<br>
To: Nathan Miller <<a href="mailto:nathanm@rushingco.com">nathanm@rushingco.com</a>>; Daniel Knapp <<a href="mailto:danielk@arborus.ca">danielk@arborus.ca</a>><br>
Cc: <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
Subject: Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">All,<o:p></o:p></p>
<p class="MsoPlainText">Bill describes how to do this easily in his initial reply. The MIN-AIR-SCH at the system level over-rides the zone OA inputs (Actually, I'm not positive what happens if there are zone exhaust fans in the model! I avoid these like the
plague.) MOST AHU models should have a SYSTEM MIN-AIR-SCH which is either -999 (default, model uses sum of zone OA flows, or system MIN-OA if there are no zone OA flows) during occupied periods or 0.0 (no econ, no damper leakage) or 0.01-0.03 or so (leakage,
economizer allowed) for hours when the system can cycle on during unoccupied periods. Changing this one system schedule to one with zero or 0.01 at all hours is absolutely the easiest way to do a run with "no" OA. It is very easy to do as a "parametric."
<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Fred<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<o:p></o:p></p>
<p class="MsoPlainText">From: Nathan Miller [<a href="mailto:nathanm@rushingco.com"><span style="color:windowtext;text-decoration:none">mailto:nathanm@rushingco.com</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">Sent: Wednesday, October 14, 2015 7:35 AM<o:p></o:p></p>
<p class="MsoPlainText">To: Daniel Knapp; Porter, Frederick NOR<o:p></o:p></p>
<p class="MsoPlainText">Cc: <a href="mailto:equest-users@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a><o:p></o:p></p>
<p class="MsoPlainText">Subject: [External] RE: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Depending on your system, you can allow economizer by assigning an arbirtrary, tiny OA CFM (like 0.01 CFM) to the zone. Then there is essentially no OA being delivered in normal operation, but economizer can be engaged.
<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Nathan Miller, PE, LEED AP BD+C - Mechanical Engineer/Senior Energy Analyst RUSHING | D 206-788-4577 | O 206-285-7100
<a href="http://www.rushingco.com"><span style="color:windowtext;text-decoration:none">www.rushingco.com</span></a><o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-----Original Message-----<o:p></o:p></p>
<p class="MsoPlainText">From: Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">mailto:equest-users-bounces@lists.onebuilding.org</span></a>] On Behalf Of Daniel Knapp<o:p></o:p></p>
<p class="MsoPlainText">Sent: Wednesday, October 14, 2015 9:32 AM<o:p></o:p></p>
<p class="MsoPlainText">To: Porter, Frederick NOR <<a href="mailto:fporter@noresco.com"><span style="color:windowtext;text-decoration:none">fporter@noresco.com</span></a>><o:p></o:p></p>
<p class="MsoPlainText">Cc: <a href="mailto:equest-users@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a><o:p></o:p></p>
<p class="MsoPlainText">Subject: Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">There should be a way to run without outdoor air while still allowing economizer operation. If you set the outdoor air to zero at the zone level, and allow for an economizer at the system level, I imagine that eQUEST would do this. It
would be worth looking at the hourly reports for the OA fraction at the system level to confirm that the outdoor air flow rate is behaving as expected.
<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">All the best,<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Dan<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">-<o:p></o:p></p>
<p class="MsoPlainText">Daniel Knapp, PhD, PPhys, LEED(r) AP O+M <a href="mailto:danielk@arborus.ca">
<span style="color:windowtext;text-decoration:none">danielk@arborus.ca</span></a><o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">Arborus Consulting<o:p></o:p></p>
<p class="MsoPlainText">Energy Strategies for the Built Environment <a href="http://www.arborus.ca">
<span style="color:windowtext;text-decoration:none">www.arborus.ca</span></a><o:p></o:p></p>
<p class="MsoPlainText">76 Chamberlain Avenue<o:p></o:p></p>
<p class="MsoPlainText">Ottawa, ON, K1S 1V9<o:p></o:p></p>
<p class="MsoPlainText">Phone: (613) 234-7178 ext. 113<o:p></o:p></p>
<p class="MsoPlainText">Fax: (613) 234-0740<o:p></o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText"><o:p> </o:p></p>
<p class="MsoPlainText">> On Oct 13, 2015, at 7:37 PM, Porter, Frederick NOR <<a href="mailto:fporter@noresco.com"><span style="color:windowtext;text-decoration:none">fporter@noresco.com</span></a>> wrote:<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Mark,<o:p></o:p></p>
<p class="MsoPlainText">> I'd stick with Bill's original suggestion. Run the model with "zero" OA and compare to the "proposed" case. Seem's close enough to me... As Joe notes, in the end there can be some ambiguity about exactly how the total hourly coil
load should be apportioned. If you are curious about how the model works on an hourly basis, generate some hourly AHU reports (coil loads, MA and SA conditions), from the two runs. Do not just compare L- and S- loads reports. L- reports are at a constant temp,
and in addition to OA, do not include any "false" loads from overcool/reheat, fan heat... I'm sure there are more.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> One thing to check first; make sure your coil capacity with the OA is large enough to fully condition the air at each timestep. Also, for models that use it, set the "cooling coil/cool control range" to 0.1F or so to avoid possible
small changes in the coil leaving air temps between runs.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> I think Trace and HAP provide a "ventilation load" in reports they probably do some intermediate calculation each hour for the AHU w/ and w/o OA. They may even allocate it per zone.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Food for thought: In buildings without high exhaust flows, some of the "OA ventilation load," imposed by OA at the AHU, actually offsets some infiltration load that would occur throughout the building if that OA was not brought in,
or ended up in an ERV somehow. "Simple" simulation programs attempt to account for this with schedules that are applied to infiltration based on initial AHU operating schedules, however those infiltration schedules are not directly linked to OA schedules.
I've seen "efficient" buildings that were not adequately pressurized because the nifty heat recovery ventilator exhaust fan used up all the air that would otherwise kept the building pressurized.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Fred<o:p></o:p></p>
<p class="MsoPlainText">> Fred Porter, BEMP, LEED(c) AP<o:p></o:p></p>
<p class="MsoPlainText">> Principal Engineer<o:p></o:p></p>
<p class="MsoPlainText">> Sustainability Services<o:p></o:p></p>
<p class="MsoPlainText">> NORESCO<o:p></o:p></p>
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<p class="MsoPlainText">> From: Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">mailto:equest-users-bounces@lists.onebuilding.org</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> On Behalf Of Joe Huang<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Tuesday, October 13, 2015 1:58 PM<o:p></o:p></p>
<p class="MsoPlainText">> To: <a href="mailto:equest-users@lists.onebuilding.org">
<span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a><o:p></o:p></p>
<p class="MsoPlainText">> Subject: [External] Re: [Equest-users] % LOAD ATTRIBUTED TO OA
<o:p></o:p></p>
<p class="MsoPlainText">> DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> There are so many differences between what's reported in the LS-D and SS-D that I would not use this method for anything more than an extremely crude look at the load attributable to OA. In Loads, all the heat flows are calculated
at the reference temperature (TLOADS) and counted as Cooling if the net space load that hour is positive or Heating if it's negative. In Systems, these loads are corrected to the actual zone temperature and the load from OA and interzone heat transfer added,
while solving for the zone temperature. If the zone temperature is outside the thermostat deadband, a deficit would be considered a heating load and an excess as a cooling load on the HVAC system.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> There's a much better way to get the OA load, but it would take some work, either with a User-Function, which unfortunately is not available in DOE-2.2 (although I've heard that Expressions could do much the same thing...), or by post-processing
hourly outputs. Print out an Hourly Report with the following parameters: Outdoor Air Temp (To), Room Air Temperature (Trm), Outside Air CFM, and the Zone Load. Then, use Excel or awk ( my favorite :-) :-) ) to calculate the load due to the OA as (Trm-To)*CFM*Cp
of air . This can then be compared to the Zone Load, but you'll notice some anomalies such as during the swing season when the OA Load is actually "free cooling". You'll then have to decide how to attribute the OA heat flows to the HVAC loads, which can
be tricky. <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Various people, including me, Dan Fisher, Jason Glazer, etc., have
<o:p></o:p></p>
<p class="MsoPlainText">> wandered into this area of deriving component loads, and have found
<o:p></o:p></p>
<p class="MsoPlainText">> that it ultimately raises philosophical questions. :-) :-)<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Joe<o:p></o:p></p>
<p class="MsoPlainText">> Joe Huang<o:p></o:p></p>
<p class="MsoPlainText">> White Box Technologies, Inc.<o:p></o:p></p>
<p class="MsoPlainText">> 346 Rheem Blvd., Suite 205A<o:p></o:p></p>
<p class="MsoPlainText">> Moraga CA 94556<o:p></o:p></p>
<p class="MsoPlainText">> <a href="mailto:yjhuang@whiteboxtechnologies.com"><span style="color:windowtext;text-decoration:none">yjhuang@whiteboxtechnologies.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">> <a href="http://weather.whiteboxtechnologies.com"><span style="color:windowtext;text-decoration:none">http://weather.whiteboxtechnologies.com</span></a> for simulation-ready weather
<o:p></o:p></p>
<p class="MsoPlainText">> data<o:p></o:p></p>
<p class="MsoPlainText">> (o) (925)388-0265<o:p></o:p></p>
<p class="MsoPlainText">> (c) (510)928-2683<o:p></o:p></p>
<p class="MsoPlainText">> "building energy simulations at your fingertips"<o:p></o:p></p>
<p class="MsoPlainText">> On 10/13/2015 9:02 AM, Keith Swartz wrote:<o:p></o:p></p>
<p class="MsoPlainText">> Good point, David. The system report adds more than just ventilation load to the space load.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Keith Swartz, PE | Senior Energy Engineer Seventhwave |
<o:p></o:p></p>
<p class="MsoPlainText">> Madison.Chicago.Minneapolis<o:p></o:p></p>
<p class="MsoPlainText">> 608.210.7123 seventhwave.org<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> From: David Eldridge [<a href="mailto:DEldridge@grummanbutkus.com"><span style="color:windowtext;text-decoration:none">mailto:DEldridge@grummanbutkus.com</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Tuesday, October 13, 2015 10:47 AM<o:p></o:p></p>
<p class="MsoPlainText">> To: Keith Swartz <<a href="mailto:KSwartz@seventhwave.org"><span style="color:windowtext;text-decoration:none">KSwartz@seventhwave.org</span></a>>;
<a href="mailto:Mark.Hallman@rwdi.com"><span style="color:windowtext;text-decoration:none">Mark.Hallman@rwdi.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">> Subject: RE: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> I'm not sure if that will exactly give the ventilation loads - the "L" reports are the building space loads, but the "S" reports will include other system effects such as fan heat, reheat, heat gain to the return air, so that the difference
might not exactly be a ventilation load, and might be pretty far from an OA-only load.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> If there is a preheat coil, you can set up a report to trend that coil's load if you are after the heating loads. You could trend the cooling coil load as well, but this is a function of economizer operation and outside air temperature
as well.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> David<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">>
<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
<o:p></o:p></p>
<p class="MsoPlainText">> Grumman/Butkus Associates<o:p></o:p></p>
<p class="MsoPlainText">>
<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> From: Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">mailto:equest-users-bounces@lists.onebuilding.org</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> On Behalf Of Keith Swartz<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Monday, October 12, 2015 8:55 AM<o:p></o:p></p>
<p class="MsoPlainText">> To: <a href="mailto:equest-users@lists.onebuilding.org">
<span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a><o:p></o:p></p>
<p class="MsoPlainText">> Subject: Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Mark,<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Look at the differences between values in reports LS-D and SS-D. SS-D
<o:p></o:p></p>
<p class="MsoPlainText">> includes ventilation. LS-D does not. (The first letter "S" stands for
<o:p></o:p></p>
<p class="MsoPlainText">> "system." "L" is for "load," the load in the space.)<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Keith Swartz, PE | Senior Energy Engineer Seventhwave |
<o:p></o:p></p>
<p class="MsoPlainText">> Madison.Chicago.Minneapolis<o:p></o:p></p>
<p class="MsoPlainText">> 608.210.7123 seventhwave.org<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> From: Shaun Martin [<a href="mailto:smartin@shaunmartinconsulting.com"><span style="color:windowtext;text-decoration:none">mailto:smartin@shaunmartinconsulting.com</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Friday, October 09, 2015 12:13 PM<o:p></o:p></p>
<p class="MsoPlainText">> To: 'Mark Hallman' <<a href="mailto:Mark.Hallman@rwdi.com"><span style="color:windowtext;text-decoration:none">Mark.Hallman@rwdi.com</span></a>>; 'Bishop, Bill'
<o:p></o:p></p>
<p class="MsoPlainText">> <<a href="mailto:bbishop@pathfinder-ea.com"><span style="color:windowtext;text-decoration:none">bbishop@pathfinder-ea.com</span></a>>;
<a href="mailto:equest-users@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a><o:p></o:p></p>
<p class="MsoPlainText">> Subject: Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Hi Mark,<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> You can use hourly reports to pull out the outside air volume (variable PO) plus the supply and return volumes and temperatures. Then off to a spreadsheet.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Or, if you're feeling ambitious, you could write an input function (see Topics).<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Shaun<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Shaun Martin LEED-AP, BEMP<o:p></o:p></p>
<p class="MsoPlainText">> Principal<o:p></o:p></p>
<p class="MsoPlainText">> Shaun Martin Consulting<o:p></o:p></p>
<p class="MsoPlainText">> #90 - 425 Carrall Street<o:p></o:p></p>
<p class="MsoPlainText">> Vancouver, BC V6B 6E3<o:p></o:p></p>
<p class="MsoPlainText">> p. 604-789-1095<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> From: Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">mailto:equest-users-bounces@lists.onebuilding.org</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> On Behalf Of Mark Hallman<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Wednesday, October 7, 2015 7:59 PM<o:p></o:p></p>
<p class="MsoPlainText">> To: 'Bishop, Bill' <<a href="mailto:bbishop@pathfinder-ea.com"><span style="color:windowtext;text-decoration:none">bbishop@pathfinder-ea.com</span></a>>;
<o:p></o:p></p>
<p class="MsoPlainText">> 'equest-users@lists.onebuilding.org'<o:p></o:p></p>
<p class="MsoPlainText">> <<a href="mailto:equest-users@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a>><o:p></o:p></p>
<p class="MsoPlainText">> Subject: Re: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Thanks Bill, nice tip. Any way of parsing it out without running two simulations?<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Tx!<o:p></o:p></p>
<p class="MsoPlainText">> Mark.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> mark hallman<o:p></o:p></p>
<p class="MsoPlainText">> p.eng. leed ap bd&c<o:p></o:p></p>
<p class="MsoPlainText">> project engineer<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <a href="mailto:mdh@rwdi.com"><span style="color:windowtext;text-decoration:none">mdh@rwdi.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">> 519 823 1311 x2494<o:p></o:p></p>
<p class="MsoPlainText">> RWDI: the science of buildings, structures & the environment. See what we do HERE.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> From: Bishop, Bill [<a href="mailto:bbishop@pathfinder-ea.com"><span style="color:windowtext;text-decoration:none">mailto:bbishop@pathfinder-ea.com</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Wednesday, October 07, 2015 11:12<o:p></o:p></p>
<p class="MsoPlainText">> To: Mark Hallman; 'equest-users@lists.onebuilding.org'<o:p></o:p></p>
<p class="MsoPlainText">> Subject: RE: % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> One way would be to create a MIN-AIR-SCH with all hourly values set to 0 (or 0.001 to activate economizer), apply it to all SYSTEMs and use the difference in the outputs.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Regards,<o:p></o:p></p>
<p class="MsoPlainText">> ~Bill<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> William Bishop, PE, BEMP, BEAP, CEM, LEED AP | Pathfinder Engineers &
<o:p></o:p></p>
<p class="MsoPlainText">> Architects LLP Senior Energy Engineer <image001.jpg> <image002.jpg><o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> 134 South Fitzhugh Street Rochester, NY 14608<o:p></o:p></p>
<p class="MsoPlainText">> T: (585) 698-1956 F: (585) 325-6005<o:p></o:p></p>
<p class="MsoPlainText">> <a href="mailto:bbishop@pathfinder-ea.com"><span style="color:windowtext;text-decoration:none">bbishop@pathfinder-ea.com</span></a>
<a href="http://www.pathfinder-ea.com"><span style="color:windowtext;text-decoration:none">www.pathfinder-ea.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">> <image003.png>Carbon Fee and Dividend - simple, effective, and market-based.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> From: Equest-users [<a href="mailto:equest-users-bounces@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">mailto:equest-users-bounces@lists.onebuilding.org</span></a>]<o:p></o:p></p>
<p class="MsoPlainText">> On Behalf Of Mark Hallman<o:p></o:p></p>
<p class="MsoPlainText">> Sent: Wednesday, October 07, 2015 10:59 AM<o:p></o:p></p>
<p class="MsoPlainText">> To: 'equest-users@lists.onebuilding.org' <o:p></o:p></p>
<p class="MsoPlainText">> <<a href="mailto:equest-users@lists.onebuilding.org"><span style="color:windowtext;text-decoration:none">equest-users@lists.onebuilding.org</span></a>><o:p></o:p></p>
<p class="MsoPlainText">> Subject: [Equest-users] % LOAD ATTRIBUTED TO OA DELIVERY<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Hi there,<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Is there a way to accurately parse out from the eQUEST output file the percentage of the cooling and heating load that is attributed to OA delivery? Any advice would be appreciated.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> Thanks in advance!<o:p></o:p></p>
<p class="MsoPlainText">> Mark Hallman.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> mark hallman<o:p></o:p></p>
<p class="MsoPlainText">> p.eng. leed ap bd&c<o:p></o:p></p>
<p class="MsoPlainText">> project engineer<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <a href="mailto:mdh@rwdi.com"><span style="color:windowtext;text-decoration:none">mdh@rwdi.com</span></a><o:p></o:p></p>
<p class="MsoPlainText">> 519 823 1311 x2494<o:p></o:p></p>
<p class="MsoPlainText">> RWDI: the science of buildings, structures & the environment. See what we do HERE.<o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
<p class="MsoPlainText">> <o:p></o:p></p>
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