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<div class="moz-cite-prefix">Thanks for your comment Dan<br>
<br>
I just found in the help this paragraph:<br>
<i><br>
</i>
<title>Thermal Storage type</title>
<script title="BSSC Special Effects" language="JavaScript" src="../ehlpdhtm.js"></script>
<p><i><font style="FONT-WEIGHT: bold; COLOR: #ff0000"
color="#ff0000">Warning:</font></i><i> All water source heat
pumps must have a Heat Pump Loop Storage tank specified here.
If the loop is not connected to some type of storage, a small
storage tank must still be entered to model the storage effect
of the condenser water loop. </i></p>
<link rel="StyleSheet" href="../TRACE.css">
<style title="hcp" type="text/css">
<!--
tr.hcp1 { x-cell-content-align:top; }
td.hcp2 { padding-left:1px; padding-top:1px; padding-right:1px; padding-bottom:1px; }
p.hcp3 { font-weight:bold; }
font.hcp4 { color:#0000ff; text-decoration:none; }
--></style>I don´t have any thermal storage so I am trying to size a
small tank for the simulation.<br>
<pre class="moz-signature" cols="72">MSc Oscar Buchely
Ingeniero de Proyectos
Soluciones Energéticas Sostenibles
<a class="moz-txt-link-abbreviated" href="http://www.ses-ingenieria.com">www.ses-ingenieria.com</a>
Bogota - Colombia
Tel +57 1 6192633
</pre>
On 02/05/2014 11:00 a.m., Briller, Dan wrote:<br>
</div>
<blockquote
cite="mid:7B4C61AEF665ED4EAD2FB0B1056285ED684F31E011@RSHJAXEXCH.rsandh.com"
type="cite">
<pre wrap="">Hi Oscar,
>From what I know (I just did a similar project), you have to have the thermal storage capacity in the WSHP loop. The thermal storage is the "first responder" to calls for heat and cold from the zones (in this case, rooms). The cooling tower and supplemental heating boost the thermal storage as-needed but typically operate intermittently.
Your model may have some other flaw(s) that allows for the high savings. Or the 40% could be the normal condition (I just achieved 33% against a very difficult baseline). In addition, a COP of 4 is not that great (mine has a heating COP of 5.2 and cooling EER of 14.4).
Hope that's helpful,
Dan Briller
RS&H
Daniel L. "Dan" Briller P.E., LEED AP BD+C
Energy/Environmental Engineer
10748 Deerwood Park Boulevard South
Jacksonville, FL 32256-0597
Phone: 800-741-2014 x2329 / Mobile: 571-314-4002
<a class="moz-txt-link-freetext" href="mailto:Dan.Briller@rsandh.com">mailto:Dan.Briller@rsandh.com</a>
Visit our website at <a class="moz-txt-link-freetext" href="http://www.rsandh.com">http://www.rsandh.com</a>
Connect with RS&H on <a class="moz-txt-link-freetext" href="https://www.facebook.com/WeAreRSandH">https://www.facebook.com/WeAreRSandH</a> <a class="moz-txt-link-freetext" href="https://twitter.com/wearersandh">https://twitter.com/wearersandh</a> <a class="moz-txt-link-freetext" href="http://www.linkedin.com/company/rs%26h">http://www.linkedin.com/company/rs%26h</a>
-----Original Message-----__________
From: <a class="moz-txt-link-abbreviated" href="mailto:trace-users-bounces@lists.onebuilding.org">trace-users-bounces@lists.onebuilding.org</a> [<a class="moz-txt-link-freetext" href="mailto:trace-users-bounces@lists.onebuilding.org">mailto:trace-users-bounces@lists.onebuilding.org</a>] On Behalf Of Oscar Buchely L.
Sent: Friday, May 02, 2014 11:51 AM
To: <a class="moz-txt-link-abbreviated" href="mailto:trace-users@lists.onebuilding.org">trace-users@lists.onebuilding.org</a>
Subject: [Trace-users] WSHP
Hello Trace users
I´m modelling a WSHP plant with a COP of 4 and getting 40% reduction in cooling space energy consumption in comparison with a chiller with the same COP and similar performance curves. I have put "none" in thermal storage box in plant section for the WSHP.
Any thoughts about the hight savings?
--
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</pre>
</blockquote>
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