Power Generation/Hydro Power/Part5

Below are furhter equations used for calculations involving this kind of power station:

Gross plant capacity (G.C):

$$G.C = \frac{E_{potential}}{sec}$$ (in Watts) ... Equation 3.5

The firm capacity (F.C) will therefore be:

$$F.C = G.C \times {\eta}$$(in Watts) ... Equation 3.6

Thus the yearly gross out put:

$$Y.G.O = F.C \times 8760Hrs$$(in kWh) ... Equation 3.7

We can also estimate the volume of flow per annum:

$$V_{annum} = Catchment_.Area \times Annual_.Rainfall \times Yield_.Factor$$

(in kWh) ... Equation 3.8

Where:
 * η = Efficiency
 * m = mass (in Kg)
 * g = constant ≈$$9.8m.s^{-2}$$
 * h/H = water head height (metres)
 * ρ = density of water ($$m^3$$)