Re: [TRNSYS-users] Fatal Error in Automatic Heat Transfer Calculation

["Matt Duffy" <duffy@tess-inc.com>]

Dear Rebecca,

The automatic heat transfer calculation can only be used for interior surfaces. For the exterior surfaces, you may use the recommended 64 kJ/hm2K, or we sometimes use a correlation in an equation block that is a function of the wind speed.

Best regards,

Matt Duffy

----- Original Message -----
From: "Rebecca Ward" <rmw61@cam.ac.uk>
Sent: Thu, June 16, 2011 7:02
Subject: [TRNSYS-users] Fatal Error in Automatic Heat Transfer Calculation

Hi,

 

I’m having the following problem:

 

*** Fatal Error at time   :         0.000000

    Generated by Unit     :    56

    Generated by Type     :    56

    Message               : Error in automatic heat transfer calculation for surface   6 or its adjacent surface!: Automatic heat transfer calculation is only allowed on surfaces within a zone. Please check building input file (.bui)!

 

I see fro! m the forum that other people have had this problem before, so I’ve set all the wall convective heat transfer coefficients to user-defined, but I still get the same result. 

 

Can anybody help?

 

Thanks,

 

Rebecca

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