Irradiance on Inclined Plane

Question 1

What are the steps of short wave radiation on inclined plane or panel calculation?

Answer 1

1. Calculate angle of incidence (iB)
   - Need terms from table
2. Calculate diffuse irradiation (IsB)
   - Need terms from table and Ith=Ifh+Idh
3. Calculate direct irradiance (IdB)—- Remember eqn
4. Calculate ground reflected irradiance (IrB)—–Remember eqn
5. Total irradiance ItB is sum of all 3
   (If PV panel use ItB in given eqn for power)

Question 2

What is the direct solar irradiance equation?

Answer 2

IdB= (Idhcos(iB))/sin(a)

Question 3

What is the ground reflected solar irradiance equation?

Answer 3

IrB= 0.5(1-cos(90-B))(Idh+Ifh)rg