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Re: [TRNSYS-users] type 71 evacuated collector: problem with radiation on 24 hr



Giuseppe,

  I am not sure what you mean by your first question. As far as your second question is concerned though I think you only need to change the simulation time step. Note that you will leave the data interval unchanged in Type9 (the data interval stays 1 hour). I am not sure that I would set the simulation time step lower than about 1 minute however. The algorithms that interpolate solar radiation data are appropriate for timesteps between about 1 minute and 1 hour but they do an increasingly poor job of predicting the split between beam and diffuse radiation at timesteps less than one minute.

Kind regards,

 David

 

 

 

On 2014-06-27 09:41, Giuseppe Filippini wrote:

Dear TRNSYS-users,
I simulated my model with TYPE 71,3,4,9,15 and plotter Type 65 (more information in attachement);
My time simulation consists in:
TIME STOP: 24hr
TIME STEP: 1hr
And my data reader type 9e reads 24 values of Total Radiation (as a particular day with 24 hr of continuity total radiation) ;
so my problems are:
1. How can I obtain inlet/outlet temperature (in a plotter) from the collector, without the difference between daytime and nighttime of the collector?
2. How can I write "Total Radiation data file" in a component to read them in seconds (and not in hours) by the collector TYPE 71?
Best regards.
Giuseppe

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