Question

The pump shown in Figure delivers a head of 250 ft to the water. One wants to determine the power that the pump adds to the water. The difference in elevation of the two ponds is 200 ft Assume Re 7.7 x 105, Density is 1.94 slug/ft? and viscosity is 2.34x10%bs/ft2 a. State assumptions and setup Bernoulli equation between two reservoirs (5 b. Derive equation which relates friction factor, f and velocity from the above result (10 c. Derive Re in term of velocity [5] d. Calculate velocity, Re and friction factor via trial and error [15] e. Calculate major and minor losses [10) f. Calculate the pump power [5] Pump K,1.5 Lelbow 5.0 Pipe length 500 ft Pipe diameter 0.75 ft K, Lvalve Kn 0.8 Pipe roughness0 ent

Fluid mechanics.
please answer all the questions.

Answer 1

Sol uen data, ho » 25o t D-o.75t Z. - z - 200 ft 500 ft KL 1.0 2. Y29 2. 2. 29 D 29 ろー 200 와 Total heat I exit value -5.0 + 0.8 + 1.5 212.8

pat values n ee 500 2. 0.75 + 12.8 r 2A 32. 2 2R 32. h 0.35 vf + 0.1987V V. 10.35 f t 0.1987) 50 Rayndldis no Re PVD VD 5 T- 60 F 61983. u7Iv 5 l.21 x tO O.015 4) eA 136673 , 55 Re 61983-471 .885 Re 786613.55 and 0 8.20

2. 8.20 = 0.0121 12.4437 = ax 2 Lu 5.497 12.44 37 τ (0.75) → Fowe, added bY the pump peiie eight V wsta イヌ60F 62.4 « 5. 497 x 250 ft s 85753.2 | 85753.2化Ib ft.lb 550 s P.155.9 h