solar radiation modelling

BY: I.S.GURURAGHAVENDRA RAVINDRA.R 2 nd SEM M.TECH ENERGY SYSTEMS ENGG. BVBCET, HUBBALLI

Basic concepts ,[object Object],[object Object],[object Object]

Characteristics of the solar radiation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Energy from the Sun ,[object Object],[object Object],[object Object]

Breakdown of incoming solar energy

Global solar radiation ,[object Object],[object Object],[object Object],[object Object],[object Object]

Attenuation of beam radiation ,[object Object],[object Object],[object Object],[object Object]

Model development and description ,[object Object],[object Object],[object Object],[object Object],[object Object],Where , G h =The hourly global solar irradiation on a horizontal surface(W m -2 ) N=The Julian day of the year T =The hour of the day K=The cloudiness degree.

Hourly global solar radiation Where , GD =The daily global solar radiation. t1 and t2 = The sunset and the sunrise hours, respectively. Gh =The hourly global radiation in horizontal surface

Hourly solar radiation for julian day N=52,1997 and K<=0.5 Hourly global radiation for julian day N=47, 1997 and 0.5<K<1

The monthly global solar radiation can be estimates by ,[object Object],Where, d 1 and d e are ,respectively the first and the latest day of the month RMSE = {[ Σ (G ical – G imes ) 2 ]/n} 1/2

Comparison with Sivkol Model ,[object Object],[object Object],[object Object]

Conclusions ,[object Object],[object Object],[object Object],[object Object],[object Object]

References ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object]

solar radiation modelling

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solar radiation modelling