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



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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