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Re: [EnergyPlus_Support] Re: Custom Weather Files - Radiation

At 04:14 PM 10/5/2010, hollywas wrote:
Hi Linda,
Thank you for both replies.  Could you possibly elaborate on the view factor calculations making E+ crash? 

It started out with a complex building showing odd, negative values at nights.  See attached for one of the zones.  As you can see, it has no floor, it has not "opposite" surfaces so the view factors ended up being the cause of the negative numbers.

We changed some of the criteria for accepting the "fixed" view factors.  (modified after the original approximate view factors).  And sometimes actually using the approximate though they don't work for all cases.


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