Answer to Question #268240 in Mechanical Engineering for Russell Domingo

Question

Tank A which is at a pressure of 1200 kPa, supplies 400 L/min of medium fuel oil to operate a hydraulic press via a 1” schedule 40 steel pipe. The medium fuel oil then exits the hydraulic press and returns to the pressurized tank A via a pump through 2” schedule 40 steel pipes. The pump is rated at 10 hp and has an efficiency of 90%. If the following data are known:

 

·        Energy loss from tank A to the hydraulic press inlet is 5.4 Nm/N.

·        Energy loss from hydraulic press outlet to the pump inlet is 0.8 Nm/N.

·        Energy loss from outlet of pump to tank A inlet is 1.8 Nm/N.

 

 

 

Ignoring all other losses, compute the following:

 

1.        Pressure at the hydraulic press inlet.

2.        Pressure at the pump outlet.

3.        Pressure at the pump inlet.

4.        Pressure at the hydraulic press outlet.

5.        Power removed from the fluid by the hydraulic press

Answer 1

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