A pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb. The pump and its motor have an overall efficiency of 55 %.   a. Assuming that the large open reservoir is open to the atmosphere as well, what is the mechanical energy balance eq for the system?  b. What is the Reynolds number for the flow ?

Problem 5: A pressurized tank of water has a 10-cm-diameter nozzle at the bottom, where the liquid discharges to the atmosphere. The liquid level is 2.5 m above the outlet and the tank diameter can be assumed to be much larger than the diameter of the discharge nozzle. The air pressure in the space above the liquid is 250 kPa (absolute) while the atmospheric pressure is 100 kPa. Neglecting frictional effects, determine the rate of discharge (kg/sec) of liquid from the tank when the liquid level is 2.5m Air 250 kPa 25m 10 cm

Water is to be pump from a reservoir with a temperature of 32°C at sea level. Friction loss at suction is 0.3m and the suction elevation is 2.45m below pump centerline. Determine the available NPSH for this pump installation if at 32°C, Psat=4.798kPa & specific volume is 0.001006m^3/kg.

A cylinder tank with 6-meter radius and 8-meter height is to be filled with fuel. The density of the fuel is 0.85 MT/m 3.The pumps that will be used to fill-up the tank are rated at 300 cubic meter per hour and 200 cubic meter per hour. 1.Calculate the combined pump rates of the 2 pumps. 2.calculate the time it will take to fill up 90% of the tank 3.calculate the amount of fuel it took to fill up 90% of the tank

A pump is used to increase the pressure of water from 105 kPa to 800 kPa at a rate of 160 L/min. If the shaft power input to the pump is 3 kW, the efficiency (expressed in decimals, such as 0.25; don't write 25%) of the pump is ?

What is the pressure drop in the turbine? Answer: 1176.91 kPa (replace “turbine pressure drop” for “pump pressure increase”)

A pump takes water at 60°F from a large reservoir and delivers it to the bottom of an open elevated tank 25 ft above the reservoir surface through a 3 inch ID pipe. The inlet to the pump is located 10 ft below the water surface, and the water level in the tank is constant at 160 ft above the reservoir surface. The pump delivers 150 gal/min. If the total loss of energy due to friction in the piping system is 35 ft·lbf/lb. The pump and its motor have an overall efficiency of 55 %. i. Determine Delta Z (Z2 - Z1) in ft. ii. What is the actual shaft work needed for this particular mass flow rate in (ft-lbf)/s. iii. What is the mass flow rate of the water in lbm/s?

Water flows through a garden hose at a rate of 1 l/s.  The upstream diameter of the hose is 2.5 cm, and the nozzle outlet has a diameter of 1 cm.  Determine the upstream pressure (gage pressure).

The water is flowing through a pipe having diameters 20 cm and 10 cm at sections 1and 2 respectively. The rate of flow through pipe is 35 litres/s. The section 1 is 6 m above datum and section 2 is 4 m above datum. If the pressure at section 1 is 39.24 N/cm2, find the intensity of pressure at section 2. Sketch the arrangement.

On a trip to the beach (Patm 1 atm or 101.3 kPa), a car runs out of gasoline and it is necessary to siphon gasoline from a Good Samaritan's car. The siphon is a hose with a small diameter and to start the action it is necessary to insert one end into the tank full of gasoline, fill the hose with it through suction and then put the other end in a can that is placed under the tank level. The difference in pressure between point 1 (on the free surface of the gasoline in the tank) and point 2 (at the outlet of the tube) causes the liquid to flow from the highest elevation to the lowest. In this case, point 2 is located 0.75 m below point 1, and point 3 is 2 m above 1. The siphon diameter is 4 mm and friction losses in it must be ruled out. Determine: a) theminimum time to bring 4 L of gasoline from the tank to the can and b) the pressure at point 3. The density of the gasoline is 750 kg / m3.