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Re: [TRNSYS-users] external shading factor (multizone building)



Joke,


I think you should only consider the g-value of the shading device when calculating external shading factor. The g-value

of the window is handled separately. So if the g-value of your shading device is 0.23, the external shading

factor becomes 1 - 0.23 = 0.77.


Someone please correct me if I am wrong.


Kind regards,

Knut Erik Enerstvedt



>Dear trnsys-users,

 

>I’ve a question about how to calculate the external shading factor (multizone building). Is the following correct?

 

>Suppose I’ve a window with a g-value of 0,37 and a g-value of 0,23 (external shading device + window).

>The external shading factor becomes then: 1 – (gwindow+shadingdevice/ gwindow) = 1- (0.23/0.37) = 0.38

 

 

>Kind regards,

 

>Joke De Beuckelaer

>project engineer mep