<html><body bgcolor="#FFFFFF"><div>That's right. at other water inlet temps the other 2 columns of performance must also change. try get this performance data fro</div><div> your supplier. Also, don't forget the oft neglected Part Load Performance data set. <br><br>Sent from my iPhone</div><div><br>On 14.11.2012, at 17:43, David BRADLEY <<a href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>> wrote:<br><br></div><div></div><blockquote type="cite"><div>
Dear Talib,<br>
The method of adding data to extend the range of the performance
file is correct. However, you need to also extend the actual
performance data as well. For example, the provided data file shows
a normalized capacity of 1.0469 and a fraction of design energy
input of 0.98 for the following inlet conditions:<br>
<br>
Fraction of Design Load: 1.0<br>
Chilled Water Setpoint: 10.0 C <br>
Entering Cooling Water Temperature: 32.2 C <br>
Inlet Hot Water Temperature: 116.11 C<br>
<br>
simply changing the inlet hot water temperature range so that the
top value is 95C would result in the same performance (normalized
capacity of 1.0469 and a fraction of design energy input of 0.98)
for a different set of inlet conditions. More likely, the
performance of the chiller would be quite different at such a low
inlet hot water temperature. Some chillers may simply not be able to
operate at lower inlet hot water temperatures.<br>
Best,<br>
David<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 11/14/2012 07:16, Talib Ahmadu
wrote:<br>
</div>
<blockquote cite="mid:1352898999.26932.YahooMailClassic@web133204.mail.ir2.yahoo.com" type="cite">
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<div>Dear all, </div>
<div>I am using trnsys 16 to model a cooling system. The
absorption chiller i intend to model has its generator
temperature outside the range of the default temperature
of type 107 data. What i have done was to edit the inlet
hot water temperature column of performance data of type
107 from (108.89C to 116.11C) to another range (75C to
95C), to conform with the chiller i intend to model.
Please i want to know if this is correct.</div>
<div>Thanks.</div>
<div>T. Ahmadu</div>
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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"><a href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a></a>
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