<div>I found this same approach resolved my underheated hours problem in a PVAVS system on a 3.64 model I'm working on now.</div>
<div>...must be an upgrade with the new version with these challenges. I was happy it solved my model issues easily when I figured out this control parameter.</div>
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<div>You should read in the DOE-2.2 reference docs if you haven't looked there yet, it should give you some insight to how your specified system types are behaving in your model file. If you can't find these docs, let me know and I can forward them to you.</div>
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<div>Pasha<br><br></div>
<div class="gmail_quote">On Tue, Jan 25, 2011 at 3:12 PM, Austin Hermsen <span dir="ltr"><<a href="mailto:ahermsen@group14eng.com">ahermsen@group14eng.com</a>></span> wrote:<br>
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<div>I've noticed this problem when I moved a model to 3.64 from 3.63b. Models that worked fine in 3.63b have large unmet hours in 3.64. You can solve this by specifying a minimum flow in 3.64 (either cfm/sf or ratio). </div>
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<font color="#000000" size="2" face="Tahoma"><b>From:</b> <a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] On Behalf Of Pasha Korber-Gonzalez [<a href="mailto:pasha.pkconsulting@gmail.com" target="_blank">pasha.pkconsulting@gmail.com</a>]<br>
<b>Sent:</b> Tuesday, January 25, 2011 11:05 AM<br><b>To:</b> Rob Hudson<br><b>Cc:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> Re: [Equest-users] VRV Systems<br>
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<div>I'm not sure if it is a 3.64 issue or not, but I was able to represent a VRV (PVVT) system using version 3.63b and I followed the power point example for the most part.</div>
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<div>It might not be a bad idea to try version 3.63b if you have the time. Since my experience with this first VRV system model, I have not had another VRV project that would allow me to try and model them in 3.64 version.</div>
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<div>Good luck, keep us posted on what you uncover...</div>
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<div>pkg<br><br></div>
<div class="gmail_quote">On Tue, Jan 25, 2011 at 8:32 AM, Rob Hudson <span dir="ltr"><<a href="mailto:rdh4176@gmail.com" target="_blank">rdh4176@gmail.com</a>></span> wrote:<br>
<blockquote style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex" class="gmail_quote">After playing with the inputs, i have discovered that the unmet hours appear when the system is set to heat source = heat pump. for some reason this is not working properly...
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<div class="gmail_quote">On Tue, Jan 25, 2011 at 9:54 AM, Sam Mason <span dir="ltr"><<a href="mailto:sam.mason@atelierten.com" target="_blank">sam.mason@atelierten.com</a>></span> wrote:<br>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">Rob,</span></p>
<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">If you are using 3.64, I’ve had the same problem. Not sure if it’s a bug, but I’ve sent example files and problems to Jeff Hirsch without any answer. Maybe we will hear something soon.</span></p>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">Sam</span></p>
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<p class="MsoNormal"><span style="FONT-FAMILY: Consolas; COLOR: #1f497d; FONT-SIZE: 10.5pt">--</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: Consolas; COLOR: #1f497d; FONT-SIZE: 10.5pt">Sam Mason</span></p>
<p class="MsoNormal"><span style="FONT-FAMILY: Consolas; COLOR: #1f497d; FONT-SIZE: 10.5pt">Atelier Ten</span></p>
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<p class="MsoNormal"><span style="COLOR: #1f497d; FONT-SIZE: 11pt">T +1 212 254 4500 x221</span></p>
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<p class="MsoNormal"><b><span style="FONT-SIZE: 10pt">From:</span></b><span style="FONT-SIZE: 10pt"> <a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a> [mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Rob Hudson<br>
<b>Sent:</b> Tuesday, January 25, 2011 6:49 AM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] VRV Systems</span></p>
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<p class="MsoNormal"><span style="COLOR: #222222; FONT-SIZE: 10pt">I am having trouble figuring out how to model successfully the VRV systems with an air cooled condenser. I am using a Make up Air unit ( SYSTEM = PVAV) in a dummy zone and then attaching my evap unit system to it via OA-FROM-SYSTEM. my individual evap units are currently PVVVT, with air cooled condensing units set to variable speed.</span></p>
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<p class="MsoNormal"><span style="COLOR: #222222; FONT-SIZE: 10pt">I followed the instructions in that powerpoint presentation that was passed along the users group and have not been able to get it to work. </span></p></div>
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<p class="MsoNormal"><span style="COLOR: #222222; FONT-SIZE: 10pt">my unmet hours in heating are very large. is this the approach that anyone has used before and made it work? does anyone have any tips/tricks to make this thing work?</span></p>
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<p class="MsoNormal">By the way, i sent this message once with the powerpoint attached, and it was too large and i needed to wait for the moderator, so i sent this to get faster answers.</p></div>
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<p class="MsoNormal">thanks,</p></div></div></div>
<p class="MsoNormal"><br>-- <br>Rob Hudson<br><br>________________________________________________________________________<br>This e-mail has been scanned for all viruses by Star. The<br>service is powered by MessageLabs. For more information on a proactive<br>
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