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<p>Ali,</p>
<p> Again, hard to say without looking at the project. I suspect
that this is related to the controls problems that you mentioned
in your other email.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 08/09/2021 08:25, ali shahrouzian
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAGY_vw=MpC54QwUVH3MFxp+VqDPTcyQjesaAZcMXjPLpxt+j_Q@mail.gmail.com">
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<p class="MsoNormal">Dear TRNSYS users,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Hi,</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I’ve put a psychrometrics component
(type 33C – Dry bulb and Humidity ratio known) at the
outlet of a solar collector (type 539 or type 566) to
correct the outlet air state.</p>
<p class="MsoNormal">I’ve connected the air humidity ratio at
the fan outlet (before the collector) to the air humidity
ratio input of type 33c. However, I’ve faced the following
error:</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">TRNSYS Message 118 : The subroutine
SAT of the utility routine PSYCHROMETRICS, which calculates
the thermodynamic properties of moist air, has been called
with a temperature below absolute zero (-273 C). Please
check the TYPE routine which calls the psychrometrics
routine for possible sources of errors.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I would appreciate it if someone could
help me in this case.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks in advance,</p>
<p class="MsoNormal">Ali</p>
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<br>
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</blockquote>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<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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