Re: [EnergyPlus_Support] Re: Modifying a weather file to reflect "real" weather

[Chris <chris@xxxxxxxxxxxxxxxxxxxxxxxxxxx>]

I am curious to know what direct/diffuse separation method is used by 
this "converter", since many such methods have been proposed in the 
literature, and all are empirical and therefore climate specific.  
Typical monthly bias errors we can expect from the said methods are 
typically in the 10-20% range, with a lot of noise at the hourly level 
(50% rms). This is not a problem for a windowless building, but becomes 
a concern when the window area becomes significant, or intentional solar 
collection is used.

>
> The weather converter will currently do what you want -- create the 
> appropriate values from global horizontal.  (custom data) It works 
> with the existing data that you have.
>
> EnergyPlus Development Team
>


-- 
Chris A. Gueymard, PhD
Solar Consulting Services
P.O. Box 392
Colebrook, NH 03576, USA
Tel. (603) 237-8550
Fax  (603) 237-5314
http://www.SolarConsultingServices.com



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