Question

Question 1) A Pelton wheel turbine develops 13,500kW under a water head of 500m. The wheel rotates at 430rpm. The nozzle velocity coefficient is 0.98 and the wheel to jet velocity ratio is 0.46. If the overall efficiency of the turbine is 85%, determine: (a) The diameter of the wheel. (b) The diameter of the jet. (c) The specific speed of the turbine. [Answers: 1.983m, 0.206m, 0.12745 rad/s]

          Question 1)
A Pelton wheel turbine develops 13,500kW under a water head of 500m. The wheel
rotates at 430rpm. The nozzle velocity coefficient is 0.98 and the wheel to jet velocity
ratio is 0.46. If the overall efficiency of the turbine is 85%, determine:
(a) The diameter of the wheel.
(b) The diameter of the jet.
(c) The specific speed of the turbine.
[Answers: 1.983m, 0.206m, 0.12745 rad/s]

Question 1)
A Pelton wheel turbine develops 13,500kW under a water head of 500m. The wheel
rotates at 430rpm. The nozzle velocity coefficient is 0.98 and the wheel to jet velocity
ratio is 0.46. If the overall efficiency of the turbine is 85%, determine:
(a) The diameter of the wheel.
(b) The diameter of the jet.
(c) The specific speed of the turbine.
[Answers: 1.983m, 0.206m, 0.12745 rad/s]

Added by Danielle H.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Nishant Kumar

Step 1

The theoretical power (P_th) available from the water can be calculated using the formula: \[ P_{th} = \rho g Q H \] where: - \(\rho\) is the density of water (approximately 1000 kg/m³), - \(g\) is the acceleration due to gravity (9.81 m/s²), - \(Q\) is the flow Show more…

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A Pelton wheel turbine develops 13,500 kW under a water head of 500 m. The wheel rotates at 430 rpm. The nozzle velocity coefficient is 0.98 and the wheel to jet velocity ratio is 0.46. If the overall efficiency of the turbine is 85%, determine: a) The diameter of the wheel. b) The diameter of the jet. c) The specific speed of the turbine. [Answers: 1.983 m, 0.206 m, 0.12745 rad/s]