Re: [EnergyPlus_Support] SolarRadiation - further question

[Han Yan <hannahyan@xxxxxxxxx>]

I have a question related to solar radiation too.

In predicting comfort such as PMV and two node model,
will EnergyPlus count the solar radiation into MRT if
sun is present and the zone has exterior windows?


Hannah

--- Linda Lawrie <linda@xxxxxxxxxx> wrote:
> At 10:32 AM 12/3/2002, Alexander Beisteiner wrote:
> >Looking at the variable report of the direct and
> diffuse solar radiation, 
> >I found that the period of solar radiation is
> steadily reduced in the 
> >variable report. In other words, my weather file
> specifies a direct and 
> >diffuse radiation for the period 5:00 to 19:00 each
> day. In the variable 
> >report that period is reduced to 6:00 to 19:00
> after about 8 month of 
> >simulation and further to 7:00 to 17:00 after 10
> month and finally to 9:00 
> >to 16:00 after 11 month. I wonder if the source
> code uses these truncated 
> >periods of radiation or the original from the
> weather file.
> 
> Without seeing your weather file and your idf, I can
> only guess.  Even if 
> diffuse and direct are put in the weather file,
> EnergyPlus does an internal 
> calculation (based on several factors including
> latitude, longitude, etc) 
> to determine when the sun is up.  When the sun is
> not up, it resets any 
> values for diffuse and direct to 0.0
> 
> In V1.0.3:
> 
> a)  Solar interpolation has changed (hopefully for
> the better)
> 
> b)  you will be able to report out the solar
> altitude, azimuth and hour angle
> 
> 
> Linda
> 
> EnergyPlus WebSite: http://www.energyplus.gov
> Owner: EnergyPlus_Support list
> Member: EnergyPlus Development Team
> 
> 


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