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<p class="MsoNormal"><span style="color:#1F497D">If it’s appropriate for your AHU SAT control scheme, I think you can select the “steam loop” for the system HW-LOOP, and then select the 130F HW Loop for the “PREHEAT-LOOP,” “REHEAT-LOOP,” and BB-LOOPs. The humidifier
will draw from the HW-LOOP. I recall doing that. As I think about it, I’m not sure whether it was one of those “clever” ideas that worked or not! You MAY need to size the HW-COIL… but control it so it never comes on….
<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">There is also no sensible gain from the humidifier, it’s perfectly isothermal. If you are using the same source for heat and humidification that doesn’t really matter since you usually need to heat when humidifying.
<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">Of course at least we can use a “loop” for humidification, as opposed to those poor folks using E+ based software who just finally got a “gas” humidifier.<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">Fred<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:black">Fred Porter, BEMP, LEED</span></b><b><span style="color:#1F497D">©</span></b><b><span style="color:black"> AP<o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="color:#7F7F7F">Principal Engineer<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:2.0pt"><span style="color:#7F7F7F">Sustainability Services<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="color:#005DAA">NORESCO<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#7F7F7F">2540 Frontier Ave, Suite 100, Boulder, CO 80301<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#7F7F7F"><a href="mailto:fporter@noresco.com"><span style="color:blue">fporter@noresco.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;color:#807F83"><a href="http://www.noresco.com"><span style="color:blue">www.noresco.com</span></a></span><span style="font-size:9.0pt;color:#807F83"><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"><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>Fred Betz<br>
<b>Sent:</b> Monday, December 07, 2015 9:03 PM<br>
<b>To:</b> Lapierre, Patrick; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [External] Re: [Equest-users] Steam humidification<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">The makeup water is not included the energy that I’ve been able to tell.
<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">To properly model steam systems in eQUEST I’ve added a process load that accounts for: make up water and the deaerator. The total energy impact can be significant (20-30%) depending on your system design.
<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">While we’re on the topic of steam systems in eQUEST. It would be nice if you could have a separate boiler system for the humidifier from the heating hot water system. We’ve been using heat recovery chillers and
condensing boilers for a lot of projects lately that generate 130F hot water with separate process steam boilers for humidification and/or sterilizers to be more energy efficient, which currently can’t be modeled in eQUEST.
<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">Fred<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"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:10.0pt;color:#660000;text-transform:uppercase">Fred Betz</span></b><b><span style="font-size:9.0pt;color:#333333">
</span></b><span style="font-size:9.0pt;color:#333333">PhD., LEED AP ®BD+C<br>
</span><span style="font-size:10.0pt;color:#333333;text-transform:uppercase">Senior Sustainable<br>
Design Consultant</span><span style="font-size:9.0pt;color:#333333"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:9.0pt;color:#660000">AEI</span></b><span style="font-size:9.0pt;color:#333333"> | AFFILIATED ENGINEERS, INC. <br>
5802 Research Park Blvd. | Madison, WI 53719<br>
<br>
</span><span style="font-size:9.0pt;color:#660000">P: 608.236.1175 | F: 608.238.2614</span><span style="font-size:9.0pt;color:#333333"> <br>
</span><span style="font-size:9.0pt;color:#660000"><a href="mailto:fbetz@aeieng.com"><span style="color:#660000;text-decoration:none">fbetz@aeieng.com</span></a> |
<b><a href="http://www.aeieng.com/"><span style="color:#660000;text-decoration:none">www.aeieng.com</span></a></b></span><span style="font-size:9.0pt;color:#333333"> <o:p></o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Lapierre, Patrick [<a href="mailto:plapierre@bpa.ca">mailto:plapierre@bpa.ca</a>]
<br>
<b>Sent:</b> Monday, December 07, 2015 9:14 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] Steam humidification<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black">I’m questionning myself on the calculations made by DOE towards the humidification load.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black">Does anyone know if the energy necessary to bring cold water make-up to its boiling point is accounted for by DOE?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black">After a quick look in the engineer’s manual, it seems to me as if the humidification load only accounts for the heat of vaporisation of water. As if the water supply is already at it’s boiling point.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black">Did I overlook something?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black">I need a captain here!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="FR-CA" style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black;mso-fareast-language:FR-CA"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black;mso-fareast-language:FR-CA"><img border="0" width="85" height="85" id="_x0000_i1025" src="cid:image001.jpg@01D132C7.6BE22B00">
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial Black","sans-serif";color:#3F3F3F;mso-fareast-language:FR-CA">Patrick</span></b><b><span style="font-size:10.0pt;font-family:"Arial Black","sans-serif";color:black;mso-fareast-language:FR-CA"> </span></b><b><span style="font-size:10.0pt;font-family:"Arial Black","sans-serif";color:#3F3F3F;mso-fareast-language:FR-CA">Lapierre</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#7D7D7D;mso-fareast-language:FR-CA">_ing.</span></b><b><span style="font-size:10.0pt;font-family:"Arial Black","sans-serif";color:black;mso-fareast-language:FR-CA"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#A5A5A5;mso-fareast-language:FR-CA"><a href="mailto:plapierre@bpa.ca" title="Envoyer un courriel/Send email"><span style="color:#A5A5A5">plapierre@bpa.ca</span></a> | <a href="http://www.bpa.ca" target="_blank" title="www.bpa.ca"><span style="color:#A5A5A5">www.bpa.ca</span></a> | t:
5143833747x2807<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="FR-CA" style="font-size:7.5pt;font-family:"Arial","sans-serif";color:#BFBFBF;mso-fareast-language:FR-CA">Les informations contenues dans le courriel que vous venez de recevoir, y compris les pièces jointes, sont destinées à
l’usage exclusif de la (ou des) personne(s) identifiée(s) comme destinataires et sont confidentielles. Si vous n’en êtes pas le destinataire, soyez avisé que tout usage en est interdit. Si vous avez reçu ce courriel par erreur, veuillez le retourner à l’expéditeur
et le supprimer complètement de votre système informatique.</span><span lang="FR-CA"><o:p></o:p></span></p>
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