[BLDG-SIM] TRNSYS: Reading cloudiness factor from TMY2

Pedro Rodrigo pedromanuelrc at yahoo.es
Tue Jun 7 00:15:32 PDT 2005


> Hi all,
> The sky temperature module (type 69) provides two
> options to get the fictive sky temperature: i) by
> calculating the cloudiness factor from the relation
> between sky diffuse and total readiation; ii) by
> reading the cloudiness factor from a file.
> I would like to use the second option by reading the
> total sky cover and opaque sky cover from a TMY2
> weather file using type 89d. The problem is that I
> don´t know the equation to obtain the TRNSYS
> cloudiness factor from the two read fields (total
> and
> opaque sky cover). I have searched for information
> in
> the TRNSYS documentation but no success.
> Thanks for your help,
> Regards,


Pedro Manuel Rodrigo Cruz
University of Jaen, Spain


		
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