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Mavi,<br>
there are a number of things that could be a problem. The two most
common ones are that you have to assign heat exchanger nodes to tank
nodes (using a pull-down menu in the lower right hand corner of the
window). Sometimes when you change from one heat exchanger type to
another, they have different numbers of nodes and if you do not assign
all the heat exchanger nodes, they can end up getting assigned to tank
node 0 (which doesn't exist). Check the heat exchanger node assignments
first.<br>
<br>
another problem comes if you have defined a large heat exchanger. The
volume taken up by the heat exchanger is removed from the tank nodes.
If you have a big heat exchanger and a small tank, you can end up with
the heat exchanger taking up more volume than is available in the tank.<br>
<br>
If neither of these two solve your problem, please send me the project
file and tank data file and I will have a look in the code,<br>
Kind regards,<br>
David<br>
<br>
<br>
On 6/24/2010 02:33, Mavi Cambronero Vázquez wrote:
<blockquote
cite="mid:AANLkTinKCompLtAtPnhtXIIi1kbYBNwqTGcMq316pDbq@mail.gmail.com"
type="cite">
<div>Hi!!</div>
<div> </div>
<div>I´m using type 534 "Vertically cylindrical storage tank with
immersed heat exchanger" from TESS. If I change the heat exchanger type
and I choose "Serpentine tube" an inconsistency error appears....
What´s the problem if I don´t change anything else? What´s the
parameter that I´d need to modificate? Because I supose the error is
produced by an "illegal" parameter or input..., but I can´t find it...</div>
<div> </div>
<div>Thanks in advance!!</div>
<div> </div>
<div>Mavi</div>
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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
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:bradley@tess-inc.com">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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