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Manrique,<br>
If you are modeling a tempering valve, then the control signal for
the mixing valve is actually calculated at the diverter where the
flow of liquid splits into the portion that will go to the heat
source and the portion that will be used to temper the heat source
if it gets too hot. Have a look at Type11b. You can then use a
simple flow mixer (i.e. not a controlled one) in order to remix the
two liquid streams. If your situation is different then you can
always write an equation that takes the temperature of the two
streams as inputs and computes the fraction of each that is needed
in order to arrive at your desired temperature.<br>
kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 4/21/2015 7:04 AM, Manrique Delgado
Benjamin wrote:<br>
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<p class="MsoNormal"><span lang="EN-US">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I want to implement a
flow mixer with a defined outlet temperature. The
description of Type 11d seems to be what I need:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">“This instance of the
Type11 model uses mode 3 to model a controlled flow mixer in
which two inlet liquid streams are mixed together according
to an internally calculated control function so as to
<b>maintain the mixed outlet temperature at or below a user
specified value</b>.”<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">However, there isn’t any
input where to specify the outlet temperature. Do I need to
calculate separately the control signal? If so, then what is
the advantage of using this type instead of a simple
Tee-piece?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Benjamin Manrique<o:p></o:p></span></p>
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***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
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