A large chipper/shredder is to be designed for use by commercial tree trimming companies It would be mounted on a trailer to pull behind a large truck. The rotating blades of the unit protrude from a large flywheel that is driven by a fluid motor that runs on medium machine tool hydraulic oil from a hydraulic system. This is a great application for a fluid motor given the extreme and sudden variations in torque and speed. An average of
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Applied Fluid Mechanics: Global Edition
- A single acting reciprocating pump having cylinder diameter of 150 mm and stroke300 mm is used to raise water through a total height of 30m. Find the power required todrive the pump, if the crank rotates at 60 rpmarrow_forward1.calculate the pressure in a hydraulic system if the pump delivers 180 liters /min, and the engine has a power capacity of 75kw.2.The engine has a given capacity of 60kw, calculate the power requirement in a hydraulic system tool , to know that the engine is capable to support the hydraulic system if a pump delivers 110 liters per minute and the pressure is 227bar.arrow_forwardA pump has a displacement volume of 6 in^3. It delivers 24 gpm at 1000 rpm and 1000 psi. If the prime mover input torque is 1100 in • lb, what is the theoretical torque required to operate the pump in in-lbs?arrow_forward
- A pump has a displacement volume of 6 in^3. It delivers 24 gpm at 1000 rpm and 1000 psi. If the prime mover input torque is 1100 in • lb, what is the theoretical torque required to operate the pump in in-lbs?Answer: 955 ± 1.arrow_forwardWhat is the power ratio of a pump to its 1/5 scale model if the ratio of the heads is 4 to 1?arrow_forwardASAP A centrifugal pump that is used in pumping water to a tank operates at a rate of 1 gpm. The pump is driven directly by an electric motor with an input power of 1.5 hp running at a speed of 1700 rpm. The total head loss of the system is 10 m. If the motor drives the pump at 2200 rpm, what is the rate of flow of the pump?arrow_forward
- A 10-hectare rice land is to be irrigated at the peak water requirement of 10 mm/day. The source of water is pump from a river with outlet discharge directly to the irrigation canal. If the pump operates at 10 hours per day, what should be the capacity of the pump? What should be the size of engine if the total dynamic head is 10 meters. Assume pump efficiency to be 80 percent and engine to be 75 percent.arrow_forwarda pump operating at 1750 rpm delivering 600 gpm against total head of 200 tt. changes in the piping system have increase the total head of 450 tt. At what RPM should the pump be operated to achieve thus new head at the same efficiency?arrow_forwardA centrifugal pump driven by a 160-hp motor rotating at 2400 rpm is used to pump 70°F water in a manufacturing plant. The pump operates against a head of 100 ft and has an efficiency of 70%. If this pump is used under a head of 196 ft, what power will be required?arrow_forward
- A centrifugal pump discharging 10 lps against 25 m of head and operating with an efficiency of 60% requires 4.1 kW at 1000 rpm. What is the theoretical discharge if the speed is increased to 1500 rpm assuming the efficiency remains constant? What is the theoretical head and kW at 1500 rpm?.arrow_forwardA large water pump is being designed for a nuclear reactor. The pump should deliver 2500 gpm of water at a net head of 45 ft at its best efficiency point. A motor that spins at 300 rpm is available. What kind of pump (centrifugal, mixed, or axial) should be designed? Show all your calculations and justify your choice. Estimate the maximum pump efficiency that can be hoped for with this pump. Estimate the power (brake horsepower) required to run the pump.arrow_forwardA centrifugal pump with radial inlet (alpha4 = 90°) operates with water at a flow of 0.3 m3 /s. The rotor diameter is 250 mm and the blades it is 30 mm wide at the outlet. Assume that the blades are radial at the exit. Determine the theoretical height considering infinite number of blades and power required when the pump runs at 800 rpm.arrow_forward
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