Presentation on JET PUMP
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This seminar presentation discusses jet pumps. It begins with an introduction and includes sections on types of jet pumps, advantages, and applications. Jet pumps use a high velocity primary stream to transfer momentum to a secondary stream and entrain it. They have no moving parts, comprising only a nozzle and diffuser assembly. Common types include deep well, shallow well, convertible, and miniature jet pumps. Advantages include higher speed before cavitation and improved shallow water operations. Disadvantages can include lower efficiency at low speed and higher cost compared to propellers. Applications include use in marine vessels to transfer seawater and in homes to move wastewater to sewer lines.
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JET PUMPS.pptx
Jet pumps are centrifugal pumps with an impeller and diffuser that use a jet ejector to increase suction beyond normal limits. They operate using Bernoulli's principle where an increase in fluid speed causes a decrease in pressure. Jet pumps have simple, lightweight structures with no moving parts that can wear, providing long life at low maintenance costs and high production rates, making them suitable for deviated wells. However, their efficiencies are lower than other pumps, requiring more power and higher injection rates of the power fluid.
Pumping Equipment
This document provides an overview of pumping equipment used in construction projects. It discusses the main types of pumps - positive displacement pumps like reciprocating and rotary pumps, which apply direct pressure, and centrifugal pumps, which use rotational velocity to increase pressure. Reciprocating pumps are useful for high pressure applications and variable viscosity liquids, while centrifugal pumps are best for high flow rates and moderate pressure increases. Selection of the appropriate pump depends on factors like dependability, maintenance requirements, power needs, and providing the necessary flow at lowest cost.
Micro hydropower plant
Micro-hydro power is a type of hydroelectric power that typically produces up to 100 kW of electricity using the natural flow of water. These power plants can provide power to an isolated home or small community. They use various components like an intake, penstock, turbine, and generator to harness the kinetic energy of flowing water. Different types of turbines are used depending on the head and flow available, including impulse turbines like the Pelton wheel for high head, and reaction turbines like the Francis turbine for medium head. Micro-hydro systems complement solar energy installations in areas where water flow is highest when solar energy is lowest.
Suction modes and force mode pumps
This document summarizes different types of pumps used in Bangladesh including centrifugal pumps, submersible pumps, and vertical turbine pumps. It describes the basic design and operation of each type of pump, including key components like impellers and casings. The advantages and disadvantages of each pump type are outlined, along with their common applications. Force pumps and centrifugal pumps are described as pumping water from below ground level. Submersible pumps are designed to operate fully submerged, while vertical turbine pumps require above-ground motor housings but can reach greater depths than other pump types. Pump selection depends on factors like installation and maintenance requirements, efficiency, and startup characteristics.
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Presentation on JET PUMP
- 1. SEMINAR PRESENTATION ON JET PUMP SUBMITTED BY: NAME:
- 2. CONTENT INTRODUCTION FIGURE TYPES OF JET PUMP ADVANTAGES DISADVANTAGES CONCLUSION
- 3. JET PUMP • Jet pump is used to transfer momentum from a high velocity primary stream to a secondary stream that gets entrained. It is packaged with the advantage of geometrical simplicity without any moving parts. • A jet pump essentially comprises a nozzle and a diffuser assembly. • The pressure energy of water converted into kinetic energy and accordingly the pressure gets reduced • Water and air have been used as fluids in the primary and secondary streams respectively. Nozzle profiles selected is conical. The mean diameter of nozzles are kept to be 4mm and 6mm. • A stream of high pressure water from delivery pipe of the pump or from an independent supply reservoir is allowed to flow through the nozzle section.
- 4. figure
- 5. TYPES OF JET PUMP • There are four main types of jet pumps, which vary based on application and size. • Deep well-Jet pumps are used in high volume applications, such as oil wells, which range from 800-15,000 feet in depth. The ejectors in these pumps are put down the well. • Shallow well-Pumps are used in applications where the media is close to the surface, such as residential wells. The ejectors in these pumps are bolted to the nose of the pump. • Convertible-Jet pumps are "convertible", meaning they can be set up to be used for either deep or shallow well applications. • Miniature-Jet pumps are used for smaller (typically commercial) applications, such as aquariums.
- 6. ADVANTAGES • Higher speed before the onset of cavitation because of the raised internal dynamic pressure • High power density (with respect to volume) of both the propulsor and the prime mover (because a smaller, higher-speed unit can be used) • Protection of the rotating element, making operation safer around swimmers and aquatic life • Improved shallow-water operations, because only the inlet needs to be submerged • Increased maneuverability, by adding a steerable nozzle to create vectored thrust
- 7. DISADVANTAGE • Can be less efficient than a propeller at low speed • More expensive • The intake grill can become clogged with debris; e.g., seaweed. The effects of this can be mitigated by having a reversing gearbox between the engine and the water jet.
- 8. APPLICATION • In Marine applications, jet pumps are used to transfer seawater. • 2.In Home applications, they are used to move wastewater up to the sewer line.
- 9. Thank you for your attention…!!!