[EnergyPlus_Support] infiltration through closed windows

[idoebber <idoebber@xxxxxx>]

Sorry to keep emailing out like this but I promise this is the last one...at 
least for the next 15 minutes.

I had 2 questions on the cracks created surrounding the perimeter of the 
windows/doors.

1.  When my air mass flow coefficient (Cq) per meter of crack is less then 
0.0005, energy plus specifies no air flow through these cracks and I get 
numerous warning messages about my inside surface heat balance not converging 
since my maximum temperature differences is greater then the 0.002 temperature 
minimum.  Is there a requirement for this field that the value be greater or 
equal to 0.0005 and why is it effecting my surface heat balance.

2.  When I do have Cq = 0.0005, I have bidirectional flow through the cracks 
which I thought energy plus only modeled for large vertical openings.  Can you 
explain to me why I have bidirectional flow for cracks around my 
windows/doors.

Thanks
Ian


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