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Hello Max,
I am
currently working on quite the same system
Types 537 and
538 from Tess libraries allow to set a desired output temperature. The type will
then calculates an sets the output flowrate for the whole solar loop (not the
pump).
Concerning
type 534, You might want to read the "PIO reference manual" in the TESS
documentation folder.
Hope this
helps,
Romain De : Max Werlein [mailto:maxwithhat@hotmail.com] Envoyé : mercredi 15 octobre 2008 13:09 À : trnsys users Objet : [TRNSYS-users] PID controller Dear TRNSYS users, I have a solar collector with a constant area, feeding its outputflow to a storage tank. Cold water leaves the tank through a pump (variable speed type 10) and feeds the collector. I now want to use a PID controller (or feedback controller) so as to regulate the outlet temperature of the collector to lets say 90 ºC by varing the input flowrate of the collector, hence controlling the variable speed pump. This does not seem to work, whereas testin the PID conroller (without Tank) i found out that I can control the collector inlet temperature for a constant area and flowrate trough the collector. But controlling a temperature by variing the flowrate sonhow does not work. Maybe anyone has any suggestions? Thanks and kind regards max Express yourself instantly with MSN Messenger! MSN Messenger -- Les donnees et renseignements contenus dans ce message sont personnels, confidentiels et secrets. Toute publication, utilisation ou diffusion, meme partielle, doit etre autorisee. Si vous n'etes pas le bon destinataire, nous vous demandons de ne pas lire, copier, utiliser ou divulguer cette communication. Nous vous prions de notifier cette erreur a l'expediteur et d'effacer immediatement cette communication de votre systeme. Any data and information contained in this electronic mail is personal, confidential and secret. Any total or partial publication, use or distribution must be authorized. If you are not the right addressee, we ask you not to read, copy, use or disclose this communication. Please notify this error to the sender and erase at once this communication from your system. |