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<p class="MsoNormal"><span style="color:#1F497D">Thanks for your reply David,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The two fuels serve that same combustion purpose. I am not sure how the equipment efficiencies would figure into the equation. DOE2 calculates the BTUs combusted then converts to the meter fuel unit. The total
BTUs combusted remains the same between the two runs therefore I would expect those ratios to all be the same.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:6.0pt;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Christopher R. Jones</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">,
P.Eng.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Technical Specialist<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Sustainability & Energy<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><img width="78" height="37" id="Picture_x0020_15" src="cid:image001.png@01D33E7C.796EFCE0"></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">T +1 416-644-0252<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">2300 Yonge Street, Suite 2300<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Toronto, ON M4P 1E4 Canada</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><br>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-CA"><a href="wsp.com">wsp.com</a><o:p></o:p></span></p>
<p class="MsoNormal"><u><span lang="EN-CA" style="color:blue;mso-fareast-language:EN-CA"><o:p><span style="text-decoration:none"> </span></o:p></span></u></p>
<p class="MsoNormal" style="text-autospace:none"><b><span style="color:#7F7F7F;mso-fareast-language:FR"><o:p> </o:p></span></b></p>
<p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#6EA900;mso-fareast-language:FR">Please consider the environment before printing...<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-CA" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Equest-users [mailto:equest-users-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>David Eldridge via Equest-users<br>
<b>Sent:</b> Friday, October 06, 2017 2:07 AM<br>
<b>To:</b> Bldg-Sim, Rate, Equest, or IBPSA <equest-users@lists.onebuilding.org><br>
<b>Subject:</b> Re: [Equest-users] Defining a different fuel unit<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Are the two fuels being combusted in the same process, or is “mine” something equivalent to a purchased steam where the client is only billed for the latent energy? If the issue could be traced to a difference in combustion efficiency maybe
that can explain the difference (purchased fuel vs raw fuel) or narrow down the equipment efficiency that may be varying between runs.
<span style="font-size:12.0pt"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">David<o:p></o:p></p>
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<p class="MsoNormal">Sent from my iPad<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Oct 5, 2017, at 9:02 PM, Jones, Christopher via Equest-users <<a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">I am trying to create a different natural gas unit. Call it “mine”? I define the Btu/unit in the new fuel meter. I assign the new fuel meter to the Air-side and Water-Side equipment. Then I compare the number
of fuel units (eQuest doesn’t provide a way to change “Therms” in the ES-D report – that I could find – I didn’t review the DOE2 manual to see if it is possible). I calculate the ratio of Btu/unit between “Therm” and “mine”. I would expect that ratio to be
the same as the ratio of units consumed between the two simulation runs. But this, somewhat poorly organized, table demonstrates my confusion:</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:#1F497D"> </span></b><o:p></o:p></p>
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<td width="103" nowrap="" valign="top" style="width:77.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;height:15.0pt">
<p class="MsoNormal"><b><span style="color:#1F497D">ES-D "Therms"</span></b><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:#1F497D">Meter Btu/unit</span></b><o:p></o:p></p>
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<td width="75" nowrap="" valign="top" style="width:56.0pt;border:solid windowtext 1.0pt;border-left:none;padding:0in 5.4pt 0in 5.4pt;height:15.0pt">
<p class="MsoNormal"><b><span style="color:#1F497D">ES-D Cost</span></b><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:#1F497D">mine</span></b><o:p></o:p></p>
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<td width="103" nowrap="" valign="top" style="width:77.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;height:12.75pt">
<p class="MsoNormal"><span style="color:#1F497D">37948</span><o:p></o:p></p>
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<td width="103" nowrap="" valign="top" style="width:77.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;height:12.75pt">
<p class="MsoNormal"><span style="color:#1F497D">35,724</span><o:p></o:p></p>
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<td width="75" nowrap="" valign="top" style="width:56.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;height:12.75pt">
<p class="MsoNormal"><span style="color:#1F497D">$26,230</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:#1F497D">therm</span></b><o:p></o:p></p>
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<td width="103" nowrap="" valign="top" style="width:77.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;height:12.75pt">
<p class="MsoNormal"><span style="color:#1F497D">15360</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">100,000</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">$10,617</span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="color:#1F497D">ratio</span></b><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D">2.47</span><o:p></o:p></p>
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<td width="103" nowrap="" valign="top" style="width:77.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;height:12.75pt">
<p class="MsoNormal"><span style="color:#1F497D">2.80</span><o:p></o:p></p>
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<td width="75" nowrap="" valign="top" style="width:56.0pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;height:12.75pt">
<p class="MsoNormal"><span style="color:#1F497D">2.47</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:6.0pt;color:#1F497D;mso-fareast-language:FR"> </span></b><o:p></o:p></p>
<p class="MsoNormal"><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Christopher R. Jones</span></b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">,
P.Eng.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Technical Specialist</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Sustainability & Energy</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D"><image001.png></span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">T +1 416-644-0252</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">2300 Yonge Street, Suite 2300</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR">Toronto, ON M4P 1E4 Canada</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:FR"><br>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D;mso-fareast-language:EN-CA"><a href="wsp.com">wsp.com</a></span><o:p></o:p></p>
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<p class="MsoNormal" style="text-autospace:none"><i><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#6EA900;mso-fareast-language:FR">Please consider the environment before printing...</span></i><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-CA" style="color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></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>Bishop, Bill via Equest-users<br>
<b>Sent:</b> Wednesday, October 04, 2017 2:32 PM<br>
<b>To:</b> Jeff Ross-Bain <<a href="mailto:jeff@rbgb.com">jeff@rbgb.com</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] DOAS and system HP<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Jeff,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">There are a number of workarounds for modeling DOAS units in eQUEST. The latest eQUEST beta version can run DOE-2.3 which has explicit options for modeling DOAS systems. A single DOAS can serve multiple other
systems and be configured to supply the zones directly or to connect to the mixed air, as in your WSHP case. I don’t have much experience with it but it looks promising.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">For fan power, it sounds like you have sized the DOAS already, so the 20HP supply and 7.5HP return fan power (or better yet, the BHP for the fan selections) should be entered via some combination of inputs instead
of letting the system(s) be autosized. If you specify HVAC-SUPPLY/RETURN for ERV-FANS, then any fan power entered in the Heat Recovery 2 tab inputs will be added to the fan power entered for the system SUPPLY-KW/FLOW or SUPPLY-STATIC. The fan power penalty
for the ERV section appears in the ERV Energy Recovery Summary reports. I would also look at the SV-A and SS-H reports for the systems in question. You could multiply the fan hours reported in the SS-L report by the DOAS fan power to see if the reported energy
makes sense.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Regards,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">~Bill</span><o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black">William Bishop, PE, BEMP, BEAP, CEM, LEED AP
</span></b><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:#006600">|</span></b><b><span style="font-size:10.0pt;font-family:"Franklin Gothic Medium",sans-serif;color:black"> Pathfinder Engineers & Architects LLP</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="line-height:105%"><b><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:black">Senior Energy Engineer</span></b><o:p></o:p></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:black"><image005.jpg> <image006.jpg></span><o:p></o:p></p>
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<p class="MsoNormal" style="line-height:105%"><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">134 South Fitzhugh Street</span><span style="font-size:9.0pt;line-height:105%;color:#1F497D">
</span><span style="font-size:9.0pt;line-height:105%;font-family:"Arial",sans-serif;color:#1F497D">Rochester, NY 14608</span><o:p></o:p></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>Jeff Ross-Bain via Equest-users<br>
<b>Sent:</b> Wednesday, October 04, 2017 11:54 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] DOAS and system HP<o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Dear eQuest Experts,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">I have a nagging issue that I hope someone can clarify. It has to do with DOAS units and fan motor HP.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">We have a DOAS unit that supplies all outside air (OA) to a battery of WSHP units. In preparing the model, I used the “dummy zone” approach, conditioned the air, and all of that air is then the source of OA to the WSHPs. By the way, in
this system, a portion of the return air from the WSHPs enters the DOAS.<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">The question is how is the actual DOAS unit HP modeled? This unit is 20HP supply and 7.5HP return (exhaust). The dummy zone HP auto sized is much less than the actual. However, if I input actual (i.e. kW/cfm), the energy use soars.
<o:p></o:p></p>
<p class="MsoNormal">Am I missing something? I wonder if the size of the dummy zone matters, or if some of the fan power is included in the WSHP and exhaust systems…<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><b><span style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#006E78">Jeff Ross-Bain, BEMP, LEED Fellow</span></b><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Century Gothic",sans-serif;color:#535053">President</span><o:p></o:p></p>
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