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Barto,<br>
I would recommend that you approach this by using an online
plotter to debug the simulation. Plot the temperature and flow rate
of the liquid leaving each of the devices around your flow loops.
You can also plot the output signal from your controller. I think
you'll probably find some kind of a mismatch (likely in the flow
rates). A couple of hints: make sure that you have some piping in
your collector / pump / heat exchanger loop and that the total
volume of the pipes is greater than the amount of liquid that your
pump can transfer in one time step. This will probably mean using a
pretty short time step.<br>
Regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 4/3/2014 05:00, Barto Pene wrote:<br>
</div>
<blockquote
cite="mid:CAABktHezZvxV8M3bdPZLLRrWO_mRkjDAq17mHsemkbZCQaT48Q@mail.gmail.com"
type="cite">
<div dir="ltr">Hi all,
<div><br>
</div>
<div>I modeling solar collector system with storage tank used in
pre-heating the air (with heat exchanger water-air). </div>
<div>As a storage tank I'm using Type 60c and do the standard
connections between circ.pump, controller.... the solar
collector I connect with the heat exchanger (inside the tank).
I insert another circulating pump connecting it to the flow
and temperature at Inlet 1 of the tank and Then the flow and
temperature of Outlet 1(Type 60C) I connect to the source
inlet of the heat-exchanger (Type 5 or Type 650...) on the
other load side are defined the necessary parameters for
air.....</div>
<div>But in the simulation the outlet temperature 1 from the
storage tank and the source outlet temp. from the heat
exchanger are the same i.e. like there is no heat exchange
(also the same happens if I connect with the aux.heater Type 6
there is also no temp.increase).</div>
<div>What am I doing wrong should I change the storage tank
or...?</div>
<div><br>
</div>
<div>Regards</div>
<div>Barto </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
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