[Equest-users] Wall Parameters

[Karen Walkerman]

Hi All,

I'm experimenting with using a sun-space as a thermal buffer for a
residence.  I would like to circulate air from the greenhouse into the rest
of the building using the "wall parameters" dialog.  I haven't tested it too
much yet, but it doesn't seem to have much effect.  Has anyone used it
much?  Can you offer some advice?

I have assigned the "wall parameter" to the appropriate construction type,
so that is not the issue.  Sometimes I get an error that looks like this:

 ***ERROR***********************************************************************
In routine TEMDEV for ZONE GH ZONE                          on  1/ 1 hr 22
(InitialFlg =  7)
  SUNSPACE INTERIOR-WALL calculations produced bad values:
  CSSVEC (convection) =       -3211. CSSVEC (conduction) =           0.
  This would cause a  -25. degree ZONE temperature change.   Values are
being ignored.
  Check wall definitions for errors and report this inp/lib/wth to DOE-2
support.


I have seen the eror with varying degrees of conduction difference...
reducing my airflow to a very low airflow makes this error go away.  I guess
that it can't model cycling for the hour it is called on.

Any additional help or observations are appreciated.

Thanks,

--
Karen
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