[TRNSYS-users] Storage tank type 534

[HUCHEDE, Romain]

Hello M. Thornton, 

Well its not exactly what I had configured at first... Really sorry for these inconsistences and this "weird" file.
I guess the data file I've sent you has been saved while defining the model.
Anyway, here is the latest file I am using, and I hope its more consistent.
My model has one inlet, one outlet, a heat exchanger at the bottom and an auxiliary heater, as shown in the picture.

It still crashs, and the point is I cannot check my data file because I don't know which line equals what parameter. 

I thank you for your precious help. Regards,

Romain Huchedé

-----Message d'origine-----
De : Jeff Thornton [mailto:thornton at tess-inc.com] 
Envoyé : lundi 19 mai 2008 20:14
À : HUCHEDE, Romain; trnsys-users at engr.wisc.edu
Objet : Re: [TRNSYS-users] Storage tank type 534

> Has anyone ever used type 534 to modelize vertical storage tanks ?
> Trnsys often crashes when I try to configure it. I finally managed to
specify some
> parameters but still, I've got these errors :

I took a minute and looked at your data file for Type 534 and it's not surprising that the model was generating an error.  Here are the things that I found:

1) You have 5 nodes but are telling the model that the first flow stream exits out of node 8.
2) The sum of the inlet flow fraction for flow stream 2 do not equal one, but rather 0.625
3) For HX1, you haven't told the model where the HX is located and have simply set the fraction of HX nodes in each tank node to zero.
4) For HX2, you have not specified where the HX is in the tank and have set the tank node and fraction of HX length to zero for each of the HX nodes.

Type 534 is a powerful tank model but does take a few minutes to make sure you understand the model and have things set correctly.  The way it is configured now, the tank has three inlets, three outlets and two heat exchangers - is that really the configuration of the tank that you want to model?

Jeff


Jeff Thornton
President - TESS, LLC

2916 Marketplace Drive - Suite 104
Madison WI 53719 USA

Phone: 608-274-2577
Fax: 608-278-1475
E-mail: thornton at tess-inc.com
Web: www.tess-inc.com


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