Question

Hydraulic Press 11.0ft Flow 10.0 ft 2.0ft 6 3.0 ft Filter Pump Flow The diagram on the next slide shows a fluid power system for a hydraulic press The following is known: The volume flow rate is 35 gpm. The hydraulic fluid has a specific gravity of 0.87 The power input to the pump is 20 hp. The pump efficiency is 80 percent. The filter has a resistance coefficient K-1.85 based on the velocity head in the suction line All piping is 2-in schedule 40 steel The total length of all piping is 55 feet The valve before the pump is a fully open globe value The check valve after the first 90" standard elbow is a swing type check valve. Compute the following The power removed from the fluid by the hydraulic press The pressure at point 2 at the pump inlet The pressure at point 3 at the pump outlet The pressure at point 4 at the press inlet The pressure at point 5 at the press outlet Clearly show all work, any assumptions made and intermediate steps in your derivation. Show the individual energy losses. results in US units (feet, psi, etc) Report all

Answer 1

ot: giem Data. 2b Yo 54-29 t3 2 2 29 o-078 ts 0. 0218 2 8 2(32.2)

no; tah -2 tot 21.50 ±3.25 i-33-53 P p 5 5 0 Po 15 13 hP R.

2 2 2 9 2. ft/s 3.5 2-(3.58) 2 2. P2 54 29 lb -3. 144 im2 2.22 psi こ 13 2 2 g 2 9

2. 2 2 <b 2 g 2 54 29-11P13 252