The hydraulic efficiency of a turbine (let pelton turbine) is given by - (power developed by runner or shaft power)/(water power)
shaft power is - (mass flow rate)*(Vw1+Vw2)*u
water power is - density*g*Q*H
My question is that the pressure head is converted into kinetic energy in nozzle then we should use water power = 0.5*m*V^2
why we use that formula.
my teacher said that energy input to runner= 0.5*m*V^2
and energy input to whole turbine system = density*g*Q*H
please explain.
shaft power is - (mass flow rate)*(Vw1+Vw2)*u
water power is - density*g*Q*H
My question is that the pressure head is converted into kinetic energy in nozzle then we should use water power = 0.5*m*V^2
why we use that formula.
my teacher said that energy input to runner= 0.5*m*V^2
and energy input to whole turbine system = density*g*Q*H
please explain.
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