CALCULATIONS OF WATER POWER PLANTS
The main dam is already in place, as we chose a site with a pre-existing dam. However, in the spot where our power plant will sit, there will be a head of 21 feet. The dam is an integral part of the power plant. These calculations are concerned with the river or stream flow and the available head through which the water falls to generate the electric power. It is what controls the water; by damming up the water, the amount of water used to create power can be determined. Water in motion possesses three forms of energy; kinetic energy due to its velocity, pressure energy due to its pressure and potential energy due to its height.
Kinetic energy =V2/2, Nm per kg of water.
Pressure energy = p/ρ, Nm per kg of water.
Potential energy = gH, Nm per kg of water