I have solar irradiation data (direct and diffuse) for a horizontal surface, how can I find the data of a vertical surface?is there any specific equation?
Mr Fateh
Could you provide more data about your solar radiation measurements?
Direct solar radiation is measured by heliometer directly or by measuring total radiation by pyranometet?
If you used pyranometer , what is the tilt angle of it?
Also, how you measure diffuse radiation and at any tilt angle?
Best Regards
Amirreza,
I would begin with the following book if I were you:
M. Iqbal, "An Introduction to Solar Radiation", Academic Press 1983.
The book is a classic. Most probably you will get your answer there.
-Sanjay
Dear Amirreza,
You can also try my lecture notes on solar radiations, particularly the one attached would be much helpful.
If you are working in an urban area (buildings &trees etc. nearby), try going through the paper as well.
Good luck!
http://www.naveedurrehman.com/post/Solar_Radiations_Chap_3_from_Fundamentals_of_Solar_Energy_Engineering-158.htm
Article A novel method for determining sky view factor for isotropic...
Dear Amirreza
Calculate the theoretically receivable solar irradiation on a horizontal and subsequently, on a vertical plate in your case study. Then you can find a ratio for that: X=IT,v / IT,h.
Then you can find IT,v=X*IT,h.
Note that you need to find an average monthly value for each hour of the day for X, as incidence angle varies during the day and also over the seasons, for making better approximations.
Good Luck
Dear Sanjoy Roy,
how we can get this book freely?
Thank you
Hi Mohamed,
I am not sure how to answer that question !! :-) :-)
Perhaps you can get it procured through your library ??
All I can say is (and I am sure there are many who would support me on this !) that the book by Iqbal is an excellent reference on the conventional concepts of solar irradiation.
For relatively recent developments, we may require other references.
-Sanjay
AoA Mohamed,
There are few more books you learn from:
1. Solar Engineering of Thermal Processes
by John A. Duffie, William A. Beckman
2. Solar Energy Engineering
by S Kalogirou
3. Solar Radiation and Daylight Models
by Tariq Muneer
- NR
hi friends, I read the book but I
I read the book but I couldn't find the angle of sun and normal for the vertical plan on north,east and west ?
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