AW: error running type56

["hotline" <hotline@xxxxxxxxxxxxxx>]

Dear Arturo,
additional to Michaël would like to mention two things.

1) I bet that both surfaces are windows because this error message doesn't occur for walls.
The surface number indicated in that error message is the number of surface if you count 
the surfaces in your  *.bui file from top to the bottom. It is not the surface number shown 
in PREBID!! Which is confusing  I admit.

2) In most cases the misconnection is the sky temperature. To check this you can 
connect the ambient  temperature instead of the sky temperature. If that doesn't help. 
I would copy the IISIBAT-Project and remove step by step   
all weather connection (inputs) to TYPE56 and enter reasonable initial values instead.

regards,

Torsten Welfonder


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-----Ursprüngliche Nachricht-----
Von: Michaël Kummert [mailto:kummert@engr.wisc.edu] 
Gesendet: Dienstag, 5. August 2003 21:01
An: trnsys@relay.doit.wisc.edu
Betreff: Re: error running type56


Dear Arturo,
usually that kind of error happens when you have a wrong connection in 
TRNSYS, e.g. if you have a very high incident radiation on the surfaces. I would recommend that you check all connections to Type56 and make sure 
all input values are physically possible. You can use the "trace" 
command to identify a possible misconnected input or non-physical input 
values.

Regards,

Michaël Kummert

-- 
_________________________________________________

Michaël Kummert

Solar Energy Laboratory - University of Wisconsin-Madison
1303 Engr Res Bldg, 1500 Engineering Drive
Madison, WI 53706

Tel: +1 (608) 263-1589
Fax: +1 (608) 262-8464
E-mail: kummert@engr.wisc.edu

SEL Web Site: http://sel.me.wisc.edu
TRNSYS Web Site: http://sel.me.wisc.edu/trnsys

 > Hello TRNSYS-users,
 > Running a .dck with TYPE56 in it I get the following errors:
 > ***** ERROR *****        TRNSYS ERROR
 >  TYPE 56, ZONE  1, SURFACE  4 PANE TEMPERATURE CALCULATION IS 
DIVERGING AT
 > TIME      2.00000
 >   TDIF:  NaN         ITPANE: 31 ITCALC:  1
 >  ***** ERROR *****        TRNSYS ERROR
 >  TYPE 56, ZONE  1, SURFACE  9 PANE TEMPERATURE CALCULATION IS 
DIVERGING AT
 > TIME      2.00000
 >   TDIF:  NaN         ITPANE: 31 ITCALC:  2
 > The first is a window the second an external wall.