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<p>Charles,</p>
<p> I'd recommend that you contact your distributor and include
your project files as well as a more detailed description of what
you mean when you say "it does not seem to work out." Is there an
error? Are the results not what you're expecting? The more detail
you can provide them with, the better chance they'll be able to
help.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<br>
<div class="moz-cite-prefix">On 01/26/2017 09:37, Charles Smith via
TRNSYS-users wrote:<br>
</div>
<blockquote
cite="mid:CAMdxMm2jByFf-GeaSoBxD2sb+AZSp6vn1dVUpG=k9dbDwd5tRA@mail.gmail.com"
type="cite">
<div dir="ltr">
<p class="MsoNormal">Dear TRNSYS users,<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">I am trying to model a solar water heating
system (SWHS) based
on some data that I have, but I am facing two problems related
to the temperature
control. <span></span></p>
<p class="MsoNormal">First, I would like the temperature at
outlet of the tank (Type
534) to be greater than or equal to the DHW supply temperature
measured every
hour (which I read using Type9a from a data file). <span></span></p>
<p class="MsoNormal">Second, I know the supply and return
temperatures of the
radiant floor as well as the flow rate. So I created an
equation to model the
radiant floor. The equation takes the temperature at HX outlet
(Type 534) and
subtract what the radiant floor uses in real life to get the
return
temperature, which is linked to inlet temperature for HX (Type
534). I would
like to use a controller so that the return temperature
calculated is never
below that measured. <span></span></p>
<p class="MsoNormal">I tried different controllers, but it does
not seem to work
out. Does anyone can help me please? <span></span></p>
<p class="MsoNormal">Thank you very much.<span></span></p>
<p class="MsoNormal">Best regards,<span></span></p>
<p class="MsoNormal"><span> </span></p>
<p class="MsoNormal">Charles <span></span></p>
</div>
<br>
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</pre>
</blockquote>
<br>
<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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