[TRNSYS-users] Inside surface energy flux interpolation over the wall timebase

[Pedro Rodrigo]

> Hi all:
> 
> We have developped a TYPE56 building model for
> control
> desing purposes.
> 
> We are trying to identify transfer functions (G(s))
> for the zone energy gain, provided that only one
> external signal is exciting the zone (i.e. outside
> temp, solar radiation, etc..). 
> 
> We excited the zone with a step function, varying
> the
> temperature difference between outside and inside
> air
> from 0 to 10ºCelsius in a single simulation
> timestep.
> Simulation timestep is set to 0.02 hours.
> 
> The output for QCSURF (from TYPE56) showed a strange
> function. For each wall timebase (that is set to 1
> hour) the function starts with a high value (i.e.
> 2500
> kJ/h) and quickly decreases to get the zero value at
> the end of the hour; suddenly it jumps again to a
> high
> value and the process repeats.
> 
> We don´t find an explanation to such a extrange
> energy
> response.
> 
> Thanks for your suggestions.
> 
> Regards,
> 
> 
> 
> 
> 
> Pedro Manuel Rodrigo Cruz
> University of Jaen, Spain



Pedro Manuel Rodrigo Cruz
University of Jaen, Spain


		
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