Re: [EnergyPlus_Support] how E+ calculates solar gain

["Linda Lawrie linda@xxxxxxxxxxxxxx [EnergyPlus_Support]" <EnergyPlus_Support@xxxxxxxxxxxxxxx>]

At 10:05 AM 6/7/2016, allinson_louis@xxxxxxxxxxx
[EnergyPlus_Support] wrote:
> I've been trying to understand
> how E+ calculates solar gains from the epw weather file, but am
> struggling to find the right section in the engineering reference
> guide
>
> I want to understand how direct normal radiation is used by energy plus.
> This is the 15th value in the epw file
>
> does E+ adjust this value for the weather eg cloud cover? or is this
> value be used "as is" ie the value is a recorded value from a
> weather station?

E+ does no adjustment of values from the weather file -- except
interpolation to the timestep if weather file is hourly and simulation is
requested at sub hourly timesteps.

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Posted by: Linda Lawrie <linda@xxxxxxxxxxxxxx>

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