|
Dear Clement
Rebillard,
we are also
simulating CSHPSS with type 342. There is a German thesis available from Stefan
Raab from 2006 (Simulation, Wirtschaftlichkeit und Auslegung solar unterstützter
Nahwärmesysteme mit Heißwasser ? Wärmespeicher, Cuvillier Verlag, GöttingenISBN 3-86727-048-1) in which a validation of the XST model is done with
measurement data of the CSHPSS in Hannover-Kronsberg, where the storage volume
is 2750 m³. The conclusion is that 30 segments give the highest
accuracy for the case given. Furthermore it is adviced not to use any
connections at the bottom segment, because this leads to an overestimation of
the heat loss rate of the storage bottom. For details you should check the
thesis.
Hope this helps. Best regards,
Mathieu
Riegger
Ein Unternehmen im Verbund der
Steinbeis-Stiftung Von: REBILLARD, Clement (Stagiaire CRPE) [mailto:Clement.REBILLARD@veolia.com] Gesendet: Dienstag, 5. Mai 2009 11:54 An: trnsys-users@cae.wisc.edu Betreff: [TRNSYS-users] Type342 parameters Dear
users, In my study on CSHPSS, i use tye342
from Transsolar to model a seasonal storage. Does anyone have a better
explanations of the parameter?s meaning than the explanation given in the Manual
(Type_342_en.pdf) ? I tend to understand most of the
parameters, but some remain very unclear, namely the value of parameter 2 :
« segments ». As the parameter?s value rises (10, 50, 100 for
example), the temperatures in the storage tend to decreases, and hence the Solar
Fraction decreases ? What is the meaning of this
parameter and what values are acceptable ? It seems that transsolar doesn?t
have any other paper/manual than the one i have (37 pages in wich 5 list-pages
present the parameters (only names), then 12 text-pages present the principle
(very unclear) and then, schemes, drawings, graphs
?). Many thanks for your
help,
Veolia
Environment Protegeons ensemble l'environnement : avez-vous besoin d'imprimer ce courrier electronique ? ___________________________________________________________________________________ Les informations figurant sur cet e-mail ont un caractere strictement confidentiel et sont exclusivement adressees au destinataire mentionne ci-dessus.Tout usage, reproduction ou divulgation de cet e-mail est strictement interdit si vous n'en etes pas le destinataire. Dans ce cas, veuillez nous en avertir immediatement par la meme voie et detruire l'original. Merci. This e-mail is intended only for use of the individual or entity to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure under applicable law. Any use, distribution or copying of this e-mail communication is strictly prohibited if you are not the addressee. If so, please notify us immediately by e-mail, and destroy the original. Thank you. |