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Re: [TRNSYS-users] Capacitance clarification in TYPE536

Dev,
  The capacitance should account for the thermal capacitance of the entire array (collectors, manifolds, fluid etc.). A single differential equation governs the array; there are not separate but coupled differential equations for the fluid and for the array itself. Since we do not have a second differential equation, we distribute the capacitance of the entire array into the number of collector nodes.
Kind regards,
 David
 

On 2/26/2014 09:57, Sharma Dev wrote:

Dear Admins,

 

Parameter 14 : Capacitance of Collector, is “Capacitance of a solar collector” or “Capacitance of the array of collectors” ?

 

My confusion arises from the fact that in variable details, it is specified as “The capacitance of the solar collector and fluid it contains” i.e Single collector. Whereas in source code, nodal capacity is calculated by dividing this parameter by the number of collectors (number of series * number in parallel ).  

 

Thanks

 

Dev Sharma

Institute for Renewable Energy

 

EURAC research

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