Re: [TRNSYS-users] error running type56

[David Bradley <bradley@tess-inc.com>]

Edward,
  The sky temperature is an effective value of temperature used for 
radiation calculations between a given surface and the surrounding sky. The 
sky temperature is always equal to or less than the ambient temperature. 
From what little hard information is in the discussion to which you refer, 
it looks as if your simulation is getting into some iterative trouble in 
finding a window pane temperature at 2414.25 hours due to radiation to the 
sky but that using a higher sky temperature for the radiation calculation 
(and thus obtaining less radiative loss) "fixes" the problem. Is there a 
chance you could send your project files in for us to have a look at them 
and see if any improvements can be made in the iteration scheme.
Kind regards,
 David


At 21:30 8/22/2006, Edward Halawa wrote:
> Dear All,
>
> I have a problem running TYPE56 with windows and I traced the following
> discussion:
>
> http://sel.me.wisc.edu/trnsys/mailinglist/archive1999-2002/msg00393.html
> http://sel.me.wisc.edu/trnsys/mailinglist/archive2003/msg00319.html
>
> Christian pointed out that the problem might be that the windows had no
> physical values (height and width). I checked and yes I had not put the
> value (as I just take from the "SINGLE" from library.). However, even
> after I put these values, my simulation stopped at 2414.25 hrs.
>
> I follow Torsten's suggestion to disconnect the FSKY temperature and
> replace it with ambient temperature from weather data reader. The
> simulation is "successful".
>
> But, what does this mean ??? Can anybody help ?
>
> Regards,
>
>
> ehalawa
>
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