<div dir="ltr">Ok, so I've been doing various iterations to see how adjusting the infiltration schedules affects the auto-sized heating capacity.  When I change the schedule for Heating Design Day, it appears to have no effect on the autosized capacity.  But, if I change the actual infiltration in the schedule, the capacity will change accordingly.<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, Oct 29, 2015 at 8:30 AM, Julien Marrec <span dir="ltr"><<a href="mailto:julien.marrec@gmail.com" target="_blank">julien.marrec@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>I think this may be your problem right there :)<br><br><br></div></div><div class="gmail_extra"><span class=""><br clear="all"><div><div><div dir="ltr"><div>--<br>Julien Marrec, EBCP, BPI MFBA<br>Energy&Sustainability Engineer<br>T: <a href="tel:%2B33%206%2095%2014%2042%2013" value="+33695144213" target="_blank">+33 6 95 14 42 13</a><br><span style="color:rgb(0,0,0)"><br></span><span style="color:rgb(0,0,0)">LinkedIn (en) : <span style="color:rgb(0,0,0)"><a href="http://www.linkedin.com/in/julienmarrec" target="_blank">www.linkedin.com/in/julienmarrec</a><br></span>LinkedIn (fr) : <a href="http://www.linkedin.com/in/julienmarrec/fr" target="_blank">www.linkedin.com/in/julienmarrec/fr</a></span><br><span style="color:rgb(0,0,0)"><a href="http://www.linkedin.com/in/julienmarrec" target="_blank"></a></span></div></div></div></div>
<br></span><div><div class="h5"><div class="gmail_quote">2015-10-29 13:15 GMT+01:00 Michael Campbell <span dir="ltr"><<a href="mailto:mcamp1206@gmail.com" target="_blank">mcamp1206@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi Joe,<br><br></div>I have and the SV-A report is giving me zero heating capacity for the bathroom zones.<br></div><div><div><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Oct 28, 2015 at 9:14 PM, Joe Huang <span dir="ltr"><<a href="mailto:yjhuang@whiteboxtechnologies.com" target="_blank">yjhuang@whiteboxtechnologies.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div bgcolor="#FFFFFF" text="#000000">
    Mike,<br>
    <br>
    Allow me to jump in here a bit.  Have you looked at the SV-A report
    to see what DOE-2.2 has sized for the HVAC system, particularly the
    supply-cfm and heating/cooling capacities for the bathroom ? <br>
    <br>
    Joe<br>
    <pre cols="90">Joe Huang
White Box Technologies, Inc.
346 Rheem Blvd., Suite 205A
Moraga CA 94556
<a href="mailto:yjhuang@whiteboxtechnologies.com" target="_blank">yjhuang@whiteboxtechnologies.com</a>
<a href="http://weather.whiteboxtechnologies.com" target="_blank">http://weather.whiteboxtechnologies.com</a> for simulation-ready weather data
(o) <a href="tel:%28925%29388-0265" value="+19253880265" target="_blank">(925)388-0265</a>
(c) <a href="tel:%28510%29928-2683" value="+15109282683" target="_blank">(510)928-2683</a>
"building energy simulations at your fingertips"
</pre><div><div>
    <div>On 10/28/2015 1:17 PM, Michael Campbell
      wrote:<br>
    </div>
    <blockquote type="cite">
      <div dir="ltr">I've tried different values for the degree day
        multipliers, into the hundreds.  I'm trying out different
        scenarios now to see what works, but I'm still getting unmet
        heating hours in the bathroom.<br>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Wed, Oct 28, 2015 at 3:57 PM, Julien
          Marrec <span dir="ltr"><<a href="mailto:julien.marrec@gmail.com" target="_blank">julien.marrec@gmail.com</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
            <div dir="auto">
              <div>Mike,</div>
              <div><br>
              </div>
              <div>You have set a zonal exhaust with make up air defined
                as infiltration? And your space linked to the thermal
                zone has an infiltration defined as ACH with a higher
                value for design days? How much higher?</div>
              <div>Your HVAC is autosized for the zone?</div>
              <div>Do you still have unmet hours for the bathroom?</div>
              <div><br>
              </div>
              <div>If this is not doing anything, your HVAC system might
                be already autosized to a greater value due to another
                parameter such as sizing factor so that the added
                infiltration does nothing.</div>
              <div>Or maybe your zonal fan doesn't actually run? Try and
                request some hourly variables to understand what is
                going on.</div>
              <div><br>
              </div>
              <div>Julien<br>
                Envoyé de mon iPhone</div>
              <div>
                <div>
                  <div><br>
                    Le 28 oct. 2015 à 20:27, Michael Campbell <<a href="mailto:mcamp1206@gmail.com" target="_blank"></a><a href="mailto:mcamp1206@gmail.com" target="_blank">mcamp1206@gmail.com</a>>
                    a écrit :<br>
                    <br>
                  </div>
                  <blockquote type="cite">
                    <div>
                      <div dir="ltr">
                        <div>
                          <div>
                            <div>Julien,<br>
                              <br>
                            </div>
                            Regarding the infiltration method... I am
                            currently trying to do this with a small
                            bathroom with 50cfm exhaust.  This is a core
                            zone.  Adjusting the design day values as
                            described in the write-up does not appear to
                            be doing anything.  Any thoughts?<br>
                            <br>
                          </div>
                          Thanks,<br>
                        </div>
                        Mike<br>
                      </div>
                      <div class="gmail_extra"><br>
                        <div class="gmail_quote">On Thu, Oct 15, 2015 at
                          11:45 AM, Julien Marrec <span dir="ltr"><<a href="mailto:julien.marrec@gmail.com" target="_blank"></a><a href="mailto:julien.marrec@gmail.com" target="_blank">julien.marrec@gmail.com</a>></span>
                          wrote:<br>
                          <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                            <div dir="ltr">
                              <div>Michael,<br>
                                <br>
                              </div>
                              <div>First, you're under 300 hours so
                                indeed it's a minor problem.<br>
                                <br>
                              </div>
                              <div>I've only looked at your model very
                                briefly but:<br>
                                <ul>
                                  <li>HW loop operation is set to "SNAP"
                                    at OA of 60°F. This is causing some
                                    minor underheating in shoulder
                                    season.<br>
                                  </li>
                                </ul>
                                <ul>
                                  <li>You have local exhaust fan with
                                    makeup = infiltration. Basically
                                    equest ignores this added
                                    infiltration during the sizing, so
                                    you have to trick it to take it into
                                    account by having a different
                                    schedule for sizing (heating AND
                                    cooling design days). I've put
                                    together my findings on the subject
                                    on Unmet Hours <a href="https://unmethours.com/question/3102/how-do-you-model-exhaust-fans-in-equest/" target="_blank">here</a> in some
                                    kind of tutorial that I hope is
                                    helpful. <br>
                                  </li>
                                </ul>
                                <p><br>
                                </p>
                                <p>Do the above and your unmet hours
                                  disappear.</p>
                                <p><br>
                                </p>
                                <p>Additionally:<br>
                                </p>
                                <ul>
                                  <li>Throttle range of 0.3°R seems
                                    pretty aggressive to me.<br>
                                  </li>
                                  <li>when you use baseboards and want
                                    to oversize, use the system's sizing
                                    ratio</li>
                                </ul>
                                <br>
                              </div>
                              <div>Hope this helps,<br>
                              </div>
                              <div>Julien<br>
                              </div>
                              <div><br>
                              </div>
                            </div>
                            <div class="gmail_extra"><br clear="all">
                              <div>
                                <div>
                                  <div dir="ltr">
                                    <div>--<br>
                                      Julien Marrec, EBCP, BPI MFBA<br>
                                      Energy&Sustainability Engineer<br>
                                      T: <a href="tel:%2B33%206%2095%2014%2042%2013" value="+33695144213" target="_blank">+33 6 95 14 42
                                        13</a><br>
                                      <span style="color:rgb(0,0,0)"><br>
                                      </span><span style="color:rgb(0,0,0)">LinkedIn
                                        (en) : <span style="color:rgb(0,0,0)"><a href="http://www.linkedin.com/in/julienmarrec" target="_blank"></a><a href="http://www.linkedin.com/in/julienmarrec" target="_blank">www.linkedin.com/in/julienmarrec</a><br>
                                        </span>LinkedIn (fr) : <a href="http://www.linkedin.com/in/julienmarrec/fr" target="_blank"></a><a href="http://www.linkedin.com/in/julienmarrec/fr" target="_blank">www.linkedin.com/in/julienmarrec/fr</a></span><br>
                                      <span style="color:rgb(0,0,0)"></span></div>
                                  </div>
                                </div>
                              </div>
                              <br>
                              <div class="gmail_quote"><span>2015-10-15
                                  16:30 GMT+02:00 Michael Campbell <span dir="ltr"><<a href="mailto:mcamp1206@gmail.com" target="_blank"></a><a href="mailto:mcamp1206@gmail.com" target="_blank">mcamp1206@gmail.com</a>></span>:<br>
                                </span>
                                <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>
                                    <div dir="ltr">I mistakenly attached
                                      the PRD file instead of PD2. 
                                      Correct files are attached.</div>
                                    <div>
                                      <div>
                                        <div class="gmail_extra"><br>
                                          <div class="gmail_quote">On
                                            Thu, Oct 15, 2015 at 10:16
                                            AM, Michael Campbell <span dir="ltr"><<a href="mailto:mcamp1206@gmail.com" target="_blank"></a><a href="mailto:mcamp1206@gmail.com" target="_blank">mcamp1206@gmail.com</a>></span>
                                            wrote:<br>
                                            <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
                                              <div dir="ltr">
                                                <div>
                                                  <div>
                                                    <div>Hello,<br>
                                                      <br>
                                                    </div>
                                                    I'm having what
                                                    appears to be a
                                                    minor issue with
                                                    unmet hours in a
                                                    model that I've
                                                    inherited.  My INP
                                                    and PD2 files are
                                                    attached.  I've
                                                    tried adjusting the
                                                    cool sizing ratio
                                                    and and adjusted
                                                    infiltration rates
                                                    and equipment loads
                                                    with no real
                                                    effects.  Anybody
                                                    have any ideas?<br>
                                                    <br>
                                                  </div>
                                                  Thanks,<br>
                                                </div>
                                                Mike Campbell<br>
                                              </div>
                                            </blockquote>
                                          </div>
                                          <br>
                                        </div>
                                      </div>
                                    </div>
                                    <br>
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                                  <br>
                                </blockquote>
                              </div>
                              <br>
                            </div>
                          </blockquote>
                        </div>
                        <br>
                      </div>
                    </div>
                  </blockquote>
                </div>
              </div>
            </div>
          </blockquote>
        </div>
        <br>
      </div>
      <br>
      <fieldset></fieldset>
      <br>
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</pre>
    </blockquote>
    <br>
  </div></div></div>

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<br></blockquote></div><br></div></div></div>
</blockquote></div><br></div>