Re: [EnergyPlus_Support] Solar radiation data in weather files

["Michael J. Witte" <mjwitte@xxxxxxxx>]

No.  All three monthly stastitics for solar (direct, diffuse, and global) are 
computed the same way:

Sum the value for the entire month, then divide by the number of days in the 
month.  

This gives the average sum for 24 hrs.  It does not represent any particular 
day from the month, just an average day.

Mike


On 10 Aug 2007 at 6:41, Abeer M. Eisa wrote:

> 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
> 
> 
> 
> ---------------------------------
> Yahoo! oneSearch: Finally,  mobile search that gives answers, not web links. 
> 
> [Non-text portions of this message have been removed]
> 
> 
> 
> The primary EnergyPlus web site is found at:
> http://www.energyplus.gov
> 
> The group web site is:
> http://groups.yahoo.com/group/EnergyPlus_Support/
> 
> Attachments are not allowed -- please post any files to the appropriate folder
> in the Files area of the Support Web Site.
> 
> EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the
> Documentation link and press the "search" button.
> 
> Yahoo! Groups Links
> 
> 
> 
> 
> 


========================================================
Michael J. Witte, GARD Analytics, Inc.
EnergyPlus Testing and Support      
EnergyPlus-Support@xxxxxxxx





The primary EnergyPlus web site is found at:
http://www.energyplus.gov

The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/

Attachments are not allowed -- please post any files to the appropriate folder in the Files area of the Support Web Site.

EnergyPlus Documentation is searchable.  Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/EnergyPlus_Support/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:EnergyPlus_Support-digest@xxxxxxxxxxxxxxx 
    mailto:EnergyPlus_Support-fullfeatured@xxxxxxxxxxxxxxx

<*> To unsubscribe from this group, send an email to:
    EnergyPlus_Support-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/