Explanation Given: The power of the turbine ( W s ) is 100 hp . The flow rate of the turbine ( Q ) is 18 ft 3 /s . The velocity of the pipe at point B ( V B ) is 15 ft/s . Calculation: The following assumptions are made in the problem: The water from A to B is considered as a control volume. The surfaces A and B are open to atmosphere so the pressure at point A and B are zero p A = p B = 0 Since the point A is situated in large reservoir so the velocity at point A is negligible. V A = 0 . Datum line is passed through the point B so the datum level at point B is zero. z A = 80 ft and z B = 0 . Refer Appendix A, “Physical Properties of Water versus Temperature (FPS Units)”. The density of water ( ρ w ) at 32 ° F as 1.94 slug / ft 3 . Calculate the unit weight of water ( γ ) . γ = ρ w g γ = 1.94 slug / ft 3 × 32.2 ft / s 2 = 62.4 lb / ft 3 Calculate the turbine head ( h turb ) . W s = Q γ h turb 100 hp × 550 ft ⋅ lb s 1 hp = 18 × 62

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ISBN: 9780134626055

Author: HIBBELER

Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)

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Applied Fluid Mechanics

A fluid is a substance that is continuously deformed by the application of shear stress. The rate of deformation of a fluid depends on its viscosity. The fluid tries to flow when it interacts with some other system.

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Chapter 5, Problem 100P

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The head loss in the system.

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