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Re: [TRNSYS-users] Fixed outlet flowrate of collector?

essalamo alaykom Mm Meriem
voici les données concernant le capteur stockeur (surface d'entrée=1.7 m²,surface de réflecteur=3.5 m²,surface de ballon=1.9 m² ) ce qui donne un facteur de concentration =1.85.
j'ai essayé dans les simulations ci joint :
-de changer le type 536 par le type 1257
-de modifier le programme de la pompe on diminuant le nbre des points et le temps de remplissage et de soutirage.
-de changer les pompes
-d'ajouter un ballon de stockage
svp comment je peut trouvé le type 980  





Le Mercredi 12 mars 2014 19h32, David BRADLEY <d.bradley@tess-inc.com> a écrit :
Meriem,
  I think you can use Type536 itself but you need to make sure of a few things. First, make sure that you account for the capacitance of the collector and use a short time step. If you run a pump to put hot fluid into the collector then turn off the pump, the liquid is going to get hot very very quickly (both in the simulation and in reality). Second, you need to fully define your control strategy. For example what happens after you extract the liquid; does another batch go in and start heating?

  If you have access to the TESS Controls library you can use Type980 (on/off time calculator) for the timer between "filling" and "extracting" If you don't then I think you can use an integrator (Type24) and the built-in variable TIME.
Kind regards,
 David


On 3/12/2014 04:51, MERIEM SOUSSI wrote:
Dear Trnsys users,
Is it possible to model a solar collector with a fixed outlet flowrate at a precise time?
Actually, I want to analyse the effect of storing the hot solution in a parabolic concentrating collector (type 536) . So, I don't need hourly results. I want to fill the solar collector with the hot solution in the early morning, then extract it after a period of time.
How can I do it, and with which types?
Thank you in advance for any help.
Cordially

Meriem SOUSSI



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