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[EnergyPlus_Support] Re: Surface Solar Incident

This is exactly what you would expect, at least outside of the Tropical zone. This is because the sun is lower in winter than in summer, and therefore its angle of incidence on a south vertical surface is lower in winter. Hence the direct irradiance component (i.e., DNI multiplied by the cosine of this angle) is much higher in winter.


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "yclmrl" <yucel_meral@...> wrote:
> Hi there;
> I made a simple model that has one zone on nothern hemisphere and I simulated it for 21 June and 21 January design days.For output files Energy Plus calculated surface solar incident. But at the south wall in 21 January, surface solar incident is higher than 21 June. Is that possible? 
> meral


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