Mixed flow pumps are in-line pumps, used for applications requiring high volume flow with a low discharge pressure. One application that has used this technology in recent years, is high in recent years, is high -performance jet performance jet -ski propulsion, where the pumps are used to power the water crafts with an outgoing stream…
· Centrifugal’ means directing or moving away from the axis. · Centrifugal pumps use an impeller and a volute to create partial vacuum and discharge pressure necessary to move water through the casing. · Radial flow and mixed flow pumps are commonly referred to as centrifugal pumps. · The rotating element of a centrifugal pump is called impeller. · An…
· A wind turbine is a machine for converting the kinetic energy in wind into mechanical energy. · If the mechanical energy is used directly by machinery, such as a pump or grinding stones, the machine is usually called a windmill. · If the mechanical energy is converted to electricity, the machine is called a wind turbine. · Wind…
· The Kaplan turbine is a propeller-type water turbine that has adjustable blades. It was developed in 1913 by the Austrian professor, Viktor Kaplan. · The Kaplan turbine was an evolution of the Francis turbine. Its invention allowed efficient power production in low head applications that was not possible with Francis turbines. · Kaplan turbines are now widely…
· The Francis turbine is a reaction turbine, which means that the working fluid changes pressure as it moves through the turbine, giving up its energy. · The inlet is spiral shaped. Guide vanes direct the water tangentially to the runner. The radial flow acts on the runner vanes, causing it to spin. · The guide vanes (or…
· The Pelton turbine is a tangential flow impulse turbine. · It is most efficient in high head applications. · Pelton turbines in power Pelton turbines in power plants operate with net heads ranging from 656 to 4,921 ft (200 to 1,500 m).
· The motive power in a steam turbine is obtained by the rate of change of momentum of a high velocity jet of steam impinging on a curved blade, which is free to rotate. · The steam from the boiler is expanded in a nozzle, resulting in the generation of a high velocity jet. This jet of…
· Gas turbine unit mainly comprises compressor module, turbine module, combustor and many auxiliary components. · Gas turbines find wide application as aeroengines and in power generation. · In power application, all the power developed by the turbine is used to drive the compressor, generator and the auxiliary systems of the power plant. · In aeroengines, the turbine develops…
· Combustion takes place in a combustor, which is located between the compressor and the turbine. · Combustor design requires low velocity airflow in the combustion zone, where the fuel and air are mixed and ignited. The flame holder in the combustion zone allows a stable flame front to be established and maintained. Types of Combustor There…