[TRNSYS-users] Air denisty inside TrnFlow

[Ayman Sarwa]

Hi every
body 
According
to define the fan inside Trnflow, the air density is defined at test condition. 
Anyone have
Knowledge about how the air density treated inside Trnflow ?
Is it
considered constant or calculated internally? if it is calculated, what is the
mathematical method used?
thanks 
Regards
Ayman
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