4. An impulse turbine which has a diameter, D = 5 ft, speed N = 7 rev/sec, bucket angle, ß = 150 ,coefficient of velocity, Cv = 0.9760, relative speed, Ø = 0.470, a generator efficiency, em = 0.90,and a jet diameter from nozzle of 0.625 feet. Compute the power input in HP.5. The catchment area for the reservoir of a hydro-electric power plant is 14 x 108 sq mhaving an average rainfall per annum of 125 cm 70% of the rainfall is available for powergeneration and the mean operating head is 30 meters. Calculate the maximum plantcapacity h.p. to be installed. Assume that 5% of the head is lost is penstock, the turbineefficiency is 85%, the generator efficiency is 90% and the annual load factor is 50%.

In given problem, power input can be find by simply formula. We will write formula and then find the…

4. An impulse turbine which has a diameter, D = 5 ft, speed N = 7 rev/sec, bucket angle, B = 150o, coefficient of velocity, Cv = 0.9760, relative speed, Ø = 0.470, a generator efficiency, em = 0.90, and a jet diameter from nozzle of 0.625 feet. Compute the power input in HP.

4. An impulse turbine which has a diameter, D = 5 ft, speed N = 7 rev/sec, bucket angle, B = 150o, coefficient of velocity, Cv = 0.9760, relative speed, Ø = 0.470, a generator efficiency, em = 0.90, and a jet diameter from nozzle of 0.625 feet. Compute the power input in HP.

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

A double overhung impulse turbine of 85% efficiency is direct-connected to a 30-MW generator of 93% efficiency. Elevation of head water level is 832 m above sea level, elevation of tailwater level is 384 m above sea level, turbine setting is 3.7 m, velocity of flow in penstock is equal to 0.025√2gh, loss of head due to friction is 2% of gross head. Compute:a) Flow in second metre through penstock.b) Flow in second metre through turbine.c) Diameter of jet in mm if nozzle efficiency is 98%.d) Diameter of wheel in metres.e) Rotative speed in rpm if peripheral speed is 0.45√2gh.f) Specific speed of turbine in rpm. Pls. see the solution in hand written.Thanks
A double overhung impulse turbine of 85% efficiency is direct-connected to a 30-MW generator of 93% efficiency. Elevation of head water level is 832 m above sea level, elevation of tailwater level is 384 m above sea level, turbine setting is 3.7 m, velocity of flow in penstock is equal to 0.025√2gh, loss of head due to friction is 2% of gross head. Compute:a) Flow in second metre through penstock.b) Flow in second metre through turbine.c) Diameter of jet in mm if nozzle efficiency is 98%.d) Diameter of wheel in metres.e) Rotative speed in rpm if peripheral speed is 0.45√2gh.f) Specific speed of turbine in rpm.
Water is drawn from a reservoir, in which the water level is 240 m above datum, at the rate of 0.13 m3/sec. The outlet of the pipeline is at datum level and is fitted with a nozzle to produce a high-speed jet to drive a turbine of the Pelton wheel type. If the velocity of the is 66 m/sec, calculate a) The power of the jet, b) The power supplied from the reservoir, c) The head used to overcome losses, d) The efficiency of the pipeline and nozzle in transmitting power.
A Pelton wheel develops 12,900kW at 425rpm under a head of 505m. The efficiency of the machine is 84%. Find (1) discharge of the turbine, (2) diameter of the wheel, and (3) diameter of the nozzle. Assume Cv = 0.98, and ratio of bucket speed to jet speed ¼ 0.46 Draw the schematic diagram and full solution showing formulas use.
A certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. If two of this pump is connected in series to deliver water to a system whose head requirement is 615 ft, what will be the operating discharge rate in ft3/s of either pumps?
The average wind speed in a proposed wind farm with a horizontal axis wind turbine (HEWT) is 16.2 m/s. The power coefficient of each wind turbine is estimated at 0.462, and the combined efficiency of the gearbox and generator is 86.2%. When the wind velocity at a speed of 16.2 m/s, calculate the required diameter of the wind turbine (impeller or rotor) for each turbine, as it should produce 2.62 MW of electrical power from each turbine. Find the mass flow rate of the air passing over the wind turbine. Take the density of air 1.162 kg/m3. Since 30 turbines installed in the wind farm and a house in the area have an average electrical power consumption of about 1.62 kW, Calculate how many houses of the power requirement. that can be met? For calculation, take into account an additional efficiency of 96.2% for power transmission losses. Solve the problem by making the necessary assumptions and drawing the schematic figure.
FLUID POWER TRCHNOLOGY 2) Describe Kaplan, Francis and Pelton turbines based on working principle and flow path.
[4] A generator is driven by a small, single-jet Pelton turbine designed to have a power specific speed ΩSP = 0.20. The effective head at nozzle inlet is 120 m and the nozzle velocity coefficient is 0.98. The runner rotates at 880 rev/min, the turbine overall efficiency is 88% and the mechanical efficiency is 96%. If the blade speed to jet speed ratio, θ = 0.47, determine (i) the shaft power output of the turbine; (ii) the volume flow rate; (iii) the ratio of the wheel diameter to jet diameter.
An inward flow reaction turbine has an external and internal diameters of runner 67.5 cm and 50 cm, respectively, and corresponding widths or breadths 15 cm and 22.5 cm, respectively. The effective head is 21 m. If the velocity of flow at inlet is 3 m/s and the guide vane angle is 12°, the runner vane is radial at inlet. Assume that the turbine discharges radially at outlet also. A. Find the outlet vane angle, in degree. B. Find the Power developed, in kilowatts.
A certain centrifugal pump was tested and its performance curves can be approximated as follows: H = 340 - 1.2(Q2), in feet BP = (0.0521Q3) + (1.25Q2) + (11.042Q) + 134.5, in horsepower where Q is in ft3/s. If two of this pump is connected in series to deliver water to a system whose head requirement is 615 ft, what will be the operating discharge rate in ft3/s of either pumps? Assuming the head is equally divided between the two pumps, what is the efficiency of either pumps (in %)? Take the specific weight of water to be 62.4 lbf/ft3.
A fan delivers 5.226 m^3/sec at a static pressure of 6.895 cm of water when operating at a speed of 450.941 rpm. The power input required is 3.97 kW. If 9.15 m^3/s are desired in the same fan and installation, find the pressure in cm of water
A single-stage, single-acting air compressor with runs at speed 600 rpm. It has a polytropic index of 1.26. The induced volume flow rate is 0.94 cubic meters per min and the air must be delivered at a pressure of 660 kPa. The free air conditions are 101.3 kPa and 15°C. The clearance volume is 6% of the stroke volume and the stroke/bore ratio is 1.6/1. 1. Calculate the delivery air temperature (in °C) 2. The volume of air induced into the compressor is ____ m3