A turbine is designed to operate under a net head of 80 m when the volumetric fl
ID: 1717200 • Letter: A
Question
A turbine is designed to operate under a net head of 80 m when the volumetric flow rate of water is 2 m3/s. The performance of this design is to be tested in the laboratory by using a 1/4 scale model to be run at the same efficiency as the prototype. The model turbine is operating under a head of 10 m, yielding a power output of 3.5 kW. Determine the volumetric flow rate for the model and the efficiency of the prototype neglecting the Reynolds number effects for similar operating points. If the Reynolds number effects are not neglected, estimate the efficiency of the prototype.Explanation / Answer
(Ans: a) 0.04419 m3/s, b) 80.7%, c) 84.41% )