Background:
Past DIC interns calculated solar radiation intensity. But their calculations did not match with each other. So, we recalculated it. We take readings for 2 days and measured solar radiation intensity with the help of Lux meter as well as solar power transmitter. Both devices show approximately same intensity values.
Formula:
Energy = Intensity * Time* Area
Area of lux meter= 1 m2
Time= 43200 sec (12 hours)
Observations:
Chart of data collection for 1 day given below:
Calculations:
1) Conversion of intensity ( Lux meter to W/m2) :
For eg. Intensity in lux meter = 94200
Intensity in W/ m2 = 94200*0.0079
= 744.18
2)Conversion of intensity ( W/m2 to Joule):
1 W/m2= 1 Joule
3) Average intensity = Sum of all intensities / No. of readings
= 579.63 W/m2
4) Energy of incident radiation= I*T*A
= 579.63*43200*1
= 25040016 Joule
Graphical representation of intensity vs time
Conclusion :
From above observations we have concluded that solar radiation intensity is higher in the period between 12 pm to 4 pm. Our calculations approximately matched with previous students calculations.
