[TRNSYS-users] [SPAM] - HELP: Error creating the wall transfer coefficients - E-Mail in Betreffzeile gefunden

[Nikolai Artmann]

Hello Marshall

 

I am getting the same error message. Have you found a solution for this?

 

Also, there are no inputs or outputs to/from Type 56.

 

When I try to update the building variable list, I get the following
message:

 

This INF file seems to be created with a wrong version of PREBID.

 

Is this related to the problem with the wall transfer coefficients?

Thanks, Nikolai 

 

 

Nikolai Artmann

3-Plan Haustechnik AG, Winterthur
Telefon  052 / 234 70 66
Telefax  052 / 234 70 60
e-Mail: nikolai.artmann at 3-plan.ch <mailto:nikolai.artmann at 3-plan.ch> 

 

________________________________

Von: Marshall L Sweet/sweetml/O/VCU [mailto:sweetml at vcu.edu] 
Gesendet: Dienstag, 14. Juli 2009 18:11
An: trnsys-users at cae.wisc.edu
Betreff: [SPAM] - [TRNSYS-users] HELP: Error creating the wall transfer
coefficients - E-Mail in Betreffzeile gefunden

 

TRNSYS Users,

I am using TRNBuild to create a type 56 building model.  When I save the
building I get the following error message:

Error creating the wall transfer coefficients:
Unable to find a root after indication that a root exists.
Maybe the timebase is too small.
Please check the INF file for further information.

Upon checking the INF file the error is occurring at the end of the file
reading:

UNABLE TO FIND A ROOT AFTER INDICATION THAT A ROOT EXISTED
 
 CHECK THE WALL TYPE AFTER THE LAST CALCULATED WALL
 OFTEN THE WALL CAPACITY IS TO SMALL TO CALCULATE A TRANSFER FUNCTION !
 
 CHECK ALSO YOUR TIMEBASE !

The wall type after the last calculated wall is a ceiling consisting of
two layers (wall_board and R-13 insulation).  I have used this exact
same wall type in other models and it has worked fine.  The coefficients
(A, B, C, and D) of the transfer function for this specific wall type
are identical in both models.  The timebase is also the same.  The
capacity is different but I have increased the capacity and I am still
getting the same error.

What is going on here?  Where exactly is the capacity?  What is meant by
"unable to find a root after indication that a root existed?"

Thanks in advance,

Marshall

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