In a pumping system handling water, the surface level of water in the open suction tank is 3m below the pump centerline, and the surface level in the open discharge tank is 21m above the pump centerline. The inlet piping is 7.62cm in diameter has an equivalent length of 26m of steel pipe. The discharge line is 6.35cm in diameter has an equivalent length of 72m. The motor delivers 7.5kW power to the pump. The pump discharge rate is 12.6 L/s. Consider head losses in the suction pipe and in the discharge pipe. Use the friction of 0.024 for both inlet and discharge pipes. Find the TDH, WP, and the efficiency of the pump. Answers: 49.135m; 6.071kW, 80.95%

In a pumping system handling water, the surface level of water in the open suction tank is 3m below the pump centerline, and the surface level in the open discharge tank is 21m above the pump centerline. The inlet piping is 7.62cm in diameter has an equivalent length of 26m of steel pipe. The discharge line is 6.35cm in diameter has an equivalent length of 72m. The motor delivers 7.5kW power to the pump. The pump discharge rate is 12.6 L/s. Consider head losses in the suction pipe and in the discharge pipe. Use the friction of 0.024 for both inlet and discharge pipes. Find the TDH, WP, and the efficiency of the pump. Answers: 49.135m; 6.071kW, 80.95%

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

The water needs of a small farm are to be met by pumping water from a well that can supply water continuously at a rate of 50 L/min. The water level in the well is 13 m below the ground level, and water is to be pumped to the farm by a 2-cm internal diameter pipe. The required length of piping is measured to be 20 m, and the total head loss in the piping system is estimated to be 10 m. a) Using Bernoulli equation, determine the pressure difference between the two points (A & B). b) Taking the efficiency of the pump to be 70 percent, determine the rated power of the pump that needs to be purchased.
Q3: Two tank are connected with piping system as shown. If the pump characteristics are given by: hp- 31-120000 and, 7p--190000Q+8590Q Where hp is in meters and Q in m³/s and np is the pump efficiency (%).Estimate the operational cost of the pumping (10000) m² of water to the upper tank if the cost of IKwh is 2000 ID. Neglecting the minor losses. H=15mm 0-150mm
A pump is required to transfer water at the rate of 350 kg/s from an open sump to an open storage tank located 30m above the pump. The sucLon pipe is 350mm in diameter and 12m in length and the delivery pipe is 550mm in diameter and 40m in length. Calculate:(a) The maximum height at which the pump may be placed above the sump, so that pressure at the inlet is not less than -80 kPa (gauge) (b) the energy to be supplied by the pump per unit mass of water transferred (c) The input power required by the pump, which is 60 % efficient
Water is pumped from a reservoir to a pressurized storage tank (P = 150 kPa gauge) atop a building by means of a centrifugal pump. There is a 70-m difference in elevation between the water surface in the reservoir and the end of the discharge line. The piping system consists of 80m of 5" SCH 40 steel pipe containing two 90o elbows, one gate valve, one rotary water meter, and six couplings from the reservoir to the pump; 3" SCH 40 steel pipe for 86m to the tank. The 3" pipe contains two gate valves, four 90o elbows, and ten couplings. It is desired to maintain a flow of water into the tank of 2.4 m3/min. Water temperature is 25oC. If the pump-motor set has efficiency of 65%, what would be the pumping costs be in pesos per day if electricity costs PhP 10.50/kW-hr?
The suction diameter of 60 mm reads 2 psi vacuum and 50 mm diameter discharge with 250 kpag. The suction water level is 5 m above water pump centerline with friction head loss of 0.5 m at suction pipes and discharge water level is 25 m above water pump centerline and head los at discharge pipe is 3 m. If discharge is 0.01 m^3/s, find the horsepower needed to pump the water for 70 percent pump efficiency.
A new pump is required for the water supply system of a high-rise office building. The system requires 0.06 m³/s of water pumped to a reservoir at the top of the tower 340 m above the street. City water pressure at the street-level pump inlet is 400 kPa gage. The piping is to be commercial steel, the overall length is 20 percent greater than the tower height, and there are fittings every 10 m with loss coefficients of 0.2. Determine the minimum diameter required to keep the average water velocity below 3.5 m/s in the pipe. Calculate the pressure rise required across the pump and estimate the minimum power needed to drive the pump.
A pump receives water from a tank. If the pump needs 24 n of NPSHA, how high must the water level be above the pump centerline if the water saturated at 1724 kpa ? The friction loss in the pipe averages 0.3m for each 6m height and the flow is 23 lps in a 15024 cm id pipe.
In the diesel oil transfer facility (ρ rel = 0.85), from the storage tank to the consumption tank, we want to install a pump to circulate a flow of 45 lt / s. The 400m long pipe is cast 150mm in diameter and consists of a check valve, a gate valve and 2 commercial medium radius elbows. The consumption tank is pressurized to 3.8 bar of manometric pressure. Determine the drive power of the pump in kW if its performance is 68%. Additional data, load loss factors: 1. Check valve Kr = 1.5 2. Gate valve open Kv = 0.21 3. Commercial elbow of mean radius Kc = 0.75, for each elbow 4. Storage tank outlet sharp angles Ks = 0.5 5. Entrance to consumption tank Ke = 1 6. Pipe friction factor f = 0.025
times A cenrifugal pump having outer diameter equal two the inner diameter and running at 1200rpm works agaist a total head of 32m. The velocity of flow through the impeller is constant and equal to 3m/s. The vanes are set back at an anhgle of 30°at the outlet. If the outer diameter of the impeller is 600mm and width at outlet is 50mm, determine: a- Vane angle at inlet. b- Work done per second by impeller. c- Manometric efficiency.
The length and diameter of a suction pipe of a single-acting reciprocating pump are 5m and 10 cm respectively. The pump has a plunger of diameter 15cm and a stroke length of 35 cm. The center of the pump is 3 m above the water surface in the pump. The atmospheric pressure head is 10.3 m of water and pump is running at 3r rpm. Determine: a. Pressure head due to acceleration at the beginning of the suction stroke, b. maximum pressure head due to acceleration and c. pressure head in the cylinder at the beginning and at the end of the stroke
2. In a pumping system handling water, the level in the suction tank is 3m below the pump shaft centerline; and the level in the discharge tank is 21m above the pump shaft centerline. The inlet piping is 7.62cm in diameter and together with its valves fittings is equivalent to 26m straight pipe. The discharge line, 6.35 cm in diameter, with its valves and fittings is equivalent to 72 m straight pipe. If the motor delivers 7.1 kW to the pump shaft, what is the pump efficiency for discharge rate of 12.6 Ips? Assume f = 0.024 %3D
A square bottomed tank measures 25*25*160cm and is positioned with the bottom of the tank 1m above sea level and at 20degreesC. The tank is 90% filled with water and 10% air. A water inlet enters the centre of the tank of 10mm diameter, and no other inlet or outlet is open within the tank. A pump drives water at a starting rate of 450ml/min at 0 Pa lowering to 350ml/min as the pressure increases to 800 kPa. The pump and tank are connected by a 10mm diameter pipe with k=0.15 for all fittings and tubing. It should be assumed this is the maximum flow and pressure provided by the pump. The pump will stop instantaneously once the pressure reaches 800kPa. The relationship between flow and pressure from the pump should be assumed linear. What will be the volume of compressed air inside the tank and how long will it take to fill?