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Re: [TRNSYS-users] Avarage temperature and wheghted average during operation
Bengt,
If you want to see a temperature only during collector operating times,
I think you can use an equation that sets the temperature to an arbitrary
value when the collector is not running. For example, let us say that you
have an equation that sets a variable (PumpON) to a value of 1 if the
collector pump is ON and to 0 if the collector pump is OFF. You could then
use that value as a multiplier on your collector outlet temperature
EQUATIONS 1
T_OUT = PumpON*[1,1] + 999*(1-PumpON)
the variable T_OUT will have the value of the collector outlet temperature
whenever PumpON is 1 and will have a value 999 when PumpON is 0.
If you are interested in some metrics (average temperature, min
temperature, max temperature, etc.) during specific time periods of the day
then you can use Type55 (Periodic Integrator) which is a little complicated
to set up but is designed to look at outputs only during part of the
simualtion.
Kind regards,
David
At 01:36 1/18/2007, Bengt Perers wrote:
Dear TRNSYS users,
I just have a simple question how to create a temperature output that is only
for the opering time of a solar collector for example.
I could not find a simple solution right now with just a printer or a simsum.
By first using equations then integration and finally a printer it is possible
but I was looking for a simpler solution in one component if possible.
In some cases a simultaneous weighting of the temperature by for example
energy
would also be desirable.
Just time averaging over all timesteps is efficient in Type 28 using a few
Polish notation operators for the variable. I was looking for a similar
solution.
Best Regards,
Bengt
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