controller cycling

[Fernando Varela Diez <fdmfernando@xxxxxxxxxxx>]

Dear TRNSYS users,

trying to avoid cycling in the solar collector loop, I wrote a TRNSYS 
component implementing the collector one node capacitande model, which is 
solved by finite diferences.

Response of the collector dynamical model is damped, but cycling persists, 
even highly decreasing the time step. This behaviour, apparently, has not 
physical meaning and I think is due to numerical effects.

Can somebody tell me more about this or related questions?

Is there any paper describing (more detailed than in the TRNSYS user manual) 
the numerical algorithms behind TRNSYS?

Thank you in advance.

Fernando Domínguez Muñoz
Graduate Student
Escuela Superior de Ingenieros Industriales
Universidad de Málaga (Spain).

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