Re: [EnergyPlus_Support] Solar radiation data in weather files

["Abeer M. Eisa" <abeermme@xxxxxxxxx>]

Dear Linda,
  Just to check:
  1-"The Direct Avg line is the direct normal solar average per day for  each month. That is a sum for a day." 
  So this "Direct Avg."value gives the sum of  a representative 24 hours of each month, right?
   
  2-"The diffuse avg line is again the average diffuse horizontal solar,  average sum for the days in the month."
So Differently from, "direct avg." this "Diffuse Avg."value gives the sum of  all days or all hours of each month?
   
  3- Global radiation is similar (in calcualtion basis to either direct or diffuse?)
   
  Thank you, Beat regards
  Abeer
  
Linda Lawrie <linda@xxxxxxxxxx> wrote:
          The monthly solar statistics (not for the location you are looking 
at):

- Monthly Statistics for Solar Radiation (Direct Normal, Diffuse, 
Global Horizontal) Wh/m²
Jan Feb Mar Apr May Jun
Jul Aug Sep Oct Nov Dec 
Direct Avg 3783 4026 4563 4514 4020 4101
3780 3840 3410 3805 3730 3468 

Direct Max 7675 7530 7791 8717 6490 6347
5662 5158 5732 5892 7310 6782 
Day 27 14 27 20 31 26 
27 3 30 11 8 31 

Diffuse Avg 1636 2050 2307 2596 2933 2953
3056 2820 2613 2229 1774 1663 

Global Avg 3732 4554 5408 5828 5923 6051
5932 5698 5083 4653 3899 3502 
- Maximum Direct Normal Solar of 8717 Wh/m² on Apr 20

The Direct Avg line is the direct normal solar average per day for 
each month. That is a sum for a day.

The direct Max is the sum of solar for a particular day -- and the 
day number is shown on the line below.

The diffuse avg line is again the average diffuse horizontal solar, 
average sum for the days in the month.

Global average is the Global Horizontal solar (included if the data 
source includes that) likewise.

The maximum direct normal solar is the total (sum) for one day -- 
maximum value shown.

Linda



         


Abeer M. Eisa
Visiting Scholar
School of Architecture
University of Sheffield
Western Bank
Sheffield S10 2TN, UK
tel. 0114 2220372 , Mob. 0789 44 69159
  

       
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