[TRNSYS-users] pane temperature is diverting

[David Bradley]

Michael,
   I ran into this one time when I was working with a controlled natural 
ventilation system and ended up having to turn off the automatic 
calculation of the internal convection heat transfer coefficient on the 
window pane. I used Type80 instead (an external version of the same 
algorithm as I understand) and I delayed the pane temperatures by one time 
step (five minute time steps) so as to get some effect of the changing 
temperature.
Kind regards,
  David


At 08:17 4/1/2007, Hartl Michael wrote:
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>Hello TRNSYS-Users,
>
>I am modelling a multizone building connected with a simple radiator model 
>and a heat pump!
>
>Outputs of the radiator model are the convective and the radiative power 
>emitted. I connected these outputs to Type 56 as zone gains.
>
>Basically that works fine but as soon as I try to control the room 
>temperature, e.g. with a thermostat, the pane tmperatures of certain 
>surfaces of the building are diverting.
>
>I guess the problem is that under certain conditions, like the heat pump 
>is turned on and off very often and quick, the pane temperatures can't be 
>properly calculated in one time step . May be there is a possibilty to 
>change the tolerances anyhow??
>
>Every suggestion would be helpful!
>
>Thanks in advance,
>Michael
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