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Johnson,<br>
Apologies for the delay in responding. There are a number of
generic models in TRNSYS that would suit your needs (such as Type42,
or even a simple equation). The difficulty that you face is in
obtaining realistic information from the manufacturer of the
transformers, UPS, and PDU. They should be able to give you some
information about the heat generated by their equipment under normal
operating conditions, including standby mode which you will need
when the data center is running at part load (incidentally, I have
never seen this situation! Data centers that I have run across
basically use the same amount of energy and dump the same amount of
heat into the space all the time!) <br>
<br>
Once you obtain the performance and efficiency of the equipment at
part load then you need to add a gain to the Type56 zone that
represents your data center. You can specify the gain either as a
schedule in TRNBuild or as an input.<br>
Best,<br>
David<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 10/8/2012 22:13, Johnson Chua wrote:<br>
</div>
<blockquote cite="mid:F58D2AFB090A47CD8CBBD7664AFEC26D@JohnsonHP"
type="cite">
<div dir="ltr">
<div style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE:
12pt">
<div>Dear all trnsys users</div>
<div> </div>
<div>I am trying to do an electrical supply heat gain for data
center including the electrical components such as
transformer, USP and PDU. As the data center will be running
in part load condition in different timing of the day. This
will affect the power consumption and the heat gain of the
electrical components. </div>
<div> </div>
<div>But I am unable to model a similar model of the
efficiency for the transformer, USP and PDU which will
account the heat gain to Data Center simulation. Hope that
expert in trnsys will be able to provide me an approach of
my problem as I am newbie to the Trnsys software. </div>
<div> </div>
<div>Thank you</div>
<div> </div>
<div>Regards</div>
<div>Johnson</div>
</div>
</div>
<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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