specific speed
•Download as PPTX, PDF•
20 likes•16,727 views
The document discusses specific speed, which is a metric used to compare different types of turbines. Specific speed is defined as the speed of a geometrically similar turbine that produces 1 unit of power under 1 unit of head. The specific speed ranges are provided for common turbine types: Pelton wheel turbines have a specific speed of 80-50, Francis turbines range from 50-250, and Kaplan turbines have the highest specific speed range of 250-850. Specific speed is one factor used to select the appropriate turbine type for installation based on factors like head, part load operations, number of units, cost, and more. Turbines are also classified as having high, medium, or low specific speeds based on these defined ranges.
Report
Share
Report
Share
Recommended
Classification of Turbines
Watch Video of this presentation on Link: https://youtu.be/xIGlZ3UvLdw
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Specific Speed of Turbine | Fluid Mechanics
Watch Video of this presentation on Link: https://youtu.be/I0fHo0z6EgA
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Fluid machinery ppt
we have discussed about the fluid machinery as like turbine ,centrifugal pump,reciprocating pump,impact of jet
Turbomachine Module02.pptx
This document discusses energy transfer in turbomachines. It begins by defining turbomachines and how they are classified based on flow type (axial, radial, mixed). It then discusses velocity triangles which represent the velocity components of fluid flow. The bulk of the document covers Euler's turbine equation, which relates the energy transfer rate in a turbomachine to the inlet and outlet tangential velocity and absolute velocity components of the fluid. Several forms of the equation are derived from the impulse-momentum principle. Velocity triangles and their use in analyzing fluid flow in turbomachines are also explained.
Hydro electric power plant
This document summarizes different types of hydroelectric power plants and turbines. It describes impulse and reaction turbines, including Pelton, Francis, and Kaplan turbines. It provides diagrams of hydroelectric and pump storage plants. Key concepts covered include gross and net heads, discharge, water power, brake power, efficiency, and speed. Fundamental equations for hydroelectric systems are given. Common terms are defined. Sample problems demonstrate calculations for hydroelectric plant design and performance analysis.
Pelton turbine
This document provides an overview of the Pelton turbine. It describes the Pelton turbine as an impulse type water turbine invented by Lester Allan Pelton in the 1870s. The key parts of a Pelton turbine discussed include the penstock, runner, casing, spear rod, deflector, nozzle, and brake nozzle. It also briefly discusses the specific speed of turbines and notes that China produces the most hydroelectric power worldwide.
open channel flow
- Open channel flow occurs in natural settings like rivers and streams as well as human-made channels. It is characterized by a free surface boundary.
- Flow can be uniform, gradually varied, or rapidly varied depending on changes in depth and velocity over distance. Uniform flow maintains constant depth and velocity.
- Important parameters include the Froude number, specific energy, and wave speed. Hydraulic jumps and critical flow occur when the Froude number is 1.
- Flow is controlled using underflow gates, overflow gates, and weirs. Measurement relies on critical flow assumptions at weirs.
Francis Turbine
The Francis turbine is an inward flow reaction turbine with radial discharge at the outlet. It is a mixed-flow turbine where water enters the runner radially and exits axially. Francis turbines are used in applications with medium head between 45-250 meters. They have medium specific speeds between 50-250 and a vertically oriented shaft. Francis turbines are widely used worldwide due to their high efficiencies between 80-94%. However, they also have high costs due to their complex design and cavitation can be an issue.
Recommended
Classification of Turbines
Watch Video of this presentation on Link: https://youtu.be/xIGlZ3UvLdw
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Specific Speed of Turbine | Fluid Mechanics
Watch Video of this presentation on Link: https://youtu.be/I0fHo0z6EgA
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Fluid machinery ppt
we have discussed about the fluid machinery as like turbine ,centrifugal pump,reciprocating pump,impact of jet
Turbomachine Module02.pptx
This document discusses energy transfer in turbomachines. It begins by defining turbomachines and how they are classified based on flow type (axial, radial, mixed). It then discusses velocity triangles which represent the velocity components of fluid flow. The bulk of the document covers Euler's turbine equation, which relates the energy transfer rate in a turbomachine to the inlet and outlet tangential velocity and absolute velocity components of the fluid. Several forms of the equation are derived from the impulse-momentum principle. Velocity triangles and their use in analyzing fluid flow in turbomachines are also explained.
Hydro electric power plant
This document summarizes different types of hydroelectric power plants and turbines. It describes impulse and reaction turbines, including Pelton, Francis, and Kaplan turbines. It provides diagrams of hydroelectric and pump storage plants. Key concepts covered include gross and net heads, discharge, water power, brake power, efficiency, and speed. Fundamental equations for hydroelectric systems are given. Common terms are defined. Sample problems demonstrate calculations for hydroelectric plant design and performance analysis.
Pelton turbine
This document provides an overview of the Pelton turbine. It describes the Pelton turbine as an impulse type water turbine invented by Lester Allan Pelton in the 1870s. The key parts of a Pelton turbine discussed include the penstock, runner, casing, spear rod, deflector, nozzle, and brake nozzle. It also briefly discusses the specific speed of turbines and notes that China produces the most hydroelectric power worldwide.
open channel flow
- Open channel flow occurs in natural settings like rivers and streams as well as human-made channels. It is characterized by a free surface boundary.
- Flow can be uniform, gradually varied, or rapidly varied depending on changes in depth and velocity over distance. Uniform flow maintains constant depth and velocity.
- Important parameters include the Froude number, specific energy, and wave speed. Hydraulic jumps and critical flow occur when the Froude number is 1.
- Flow is controlled using underflow gates, overflow gates, and weirs. Measurement relies on critical flow assumptions at weirs.
Francis Turbine
The Francis turbine is an inward flow reaction turbine with radial discharge at the outlet. It is a mixed-flow turbine where water enters the runner radially and exits axially. Francis turbines are used in applications with medium head between 45-250 meters. They have medium specific speeds between 50-250 and a vertically oriented shaft. Francis turbines are widely used worldwide due to their high efficiencies between 80-94%. However, they also have high costs due to their complex design and cavitation can be an issue.
Se prod thermo_examples_compressor
The document provides 10 examples of calculations related to compressors. The examples calculate various parameters such as indicated power, cylinder bore, volumetric efficiency, power required, heat transferred, swept volume, delivery temperature, and ratio of cylinder diameters for maximum efficiency. The examples involve single-stage and two-stage compressors operating at various pressures and temperatures.
Hydraulic turbines
This document summarizes three common types of hydraulic turbines: Pelton, Kaplan, and Francis turbines. It describes their basic workings, key features, and differences. The Pelton wheel uses high-pressure jets to spin buckets on a single wheel. The Kaplan turbine resembles a ship propeller and is used for lower heads. The Francis turbine has many curved blades inside a closed casing and operates under mixed radial and axial flow. It also compares impulse and reaction turbines and provides details on the Kaplan and Francis turbines.
Hydraulic Turbines-Classification,Impulse and Reaction Turbine, Layout of Hyd...
Hydraulic Turbines-Classification,Impulse and Reaction Turbine, Layout of Hyd...Mechanicalstudents.com
Hydraulic turbines are machines which convert hydraulic energy into mechanical energy. If the machine transforms mechanical energy into hydraulic energy it is called a pump. Thus in turbines, fluid does work on the machine and machine produces power. but, the pump absorbs the power and work is done on the fluid.
For more information, visit https://mechanicalstudents.com/hydraulic-turbines-classification-impulse-and-reaction-turbine-layout-of-hydroelectric-power-plant/Hydraulic machines
This document provides an overview of hydraulic machines and turbines. It defines hydraulic machines as machines that convert hydraulic energy (water energy) to mechanical energy or vice versa. Turbines are hydraulic machines that convert hydraulic energy to mechanical energy, while pumps convert mechanical energy to hydraulic energy. The document then discusses various types of turbines in more detail, including impulse turbines like the Pelton turbine and reaction turbines like the Francis turbine and Kaplan turbine. It covers the basic workings, components, applications and efficiencies of these different turbine types. Finally, it introduces the concept of performance characteristic curves for turbines.
Turbo machinery
This document discusses turbomachinery and hydraulic machinery. It defines turbomachinery as machines that transfer energy between a rotor and fluid, including turbines and compressors. Turbomachines can be open or closed, and categorized by flow type as axial, radial, or mixed. They are further classified as machines that absorb energy (pumps, fans, compressors) or produce energy (turbines). Hydraulic machinery uses liquid fluid power to do work, with pressurized hydraulic fluid controlled by valves and distributed through hoses to hydraulic motors and cylinders. Hydraulic machinery is popular due to its ability to transfer large power through small tubes and hoses.
Basic Mechanical Engineering- Hydraulic turbines
The document discusses different types of hydraulic turbines used to convert hydraulic energy from falling or flowing water into mechanical energy. It classifies turbines based on the type of energy at the inlet as either impulse turbines (only kinetic energy) or reaction turbines (both pressure and kinetic energy). It describes the Pelton wheel and Francis turbine as examples of each type. It further classifies turbines based on the main flow direction and provides ranges for suitable head based on specific speed. In summary, the document provides an overview of common hydraulic turbine classifications and examples like the Pelton and Francis turbines used for high and medium heads respectively.
Pelton Wheel Turbine Part 2
Watch Video of this presentation on Link: https://youtu.be/bHKaPBgDk6g
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Fluid MechanicsVortex flow and impulse momentum
1. The momentum equation relates the total force on a fluid system to the rate of change of momentum as fluid flows through a control volume.
2. Forces can be resolved into components in different directions for multi-dimensional flows. The total force is equal to the sum of pressure, body, and reaction forces.
3. Examples of applying the momentum equation include calculating forces on a pipe bend, nozzle, jet impact, and curved vane due to changing fluid momentum. Setting up coordinate systems aligned with the flow is important for resolving forces into components.
Hydraulic Turbines
1. The document discusses various topics related to hydraulic turbines including their classification, selection, design principles of Pelton, Francis and Kaplan turbines, draft tubes, surge tanks, governing, unit quantities, characteristic curves, similitude analysis and cavitation.
2. Hydraulic turbines are classified based on the type of energy at the inlet, direction of flow through the runner, head at the inlet, and specific speed. Pelton wheels are impulse turbines suitable for high heads while Francis and Kaplan turbines are reaction turbines for lower heads.
3. The design of each turbine type involves guidelines related to jet ratio, speed ratio, velocities, discharge, power and efficiency calculations. Characteristic curves show the performance of a
Hydraulic turbine
Turbines convert hydraulic energy from flowing water into mechanical energy via a shaft. Francis turbines, invented in 1848, are a common type of inward reaction turbine that convert both kinetic and pressure energy. They have main components like a spiral casing, guide vanes, runner, and draft tube. Pelton wheels are impulse turbines that use nozzles to convert water's pressure energy into kinetic energy before it strikes buckets on the runner to rotate it. They are suitable for high head applications.
Selection of Turbine With Respect to Head VS Specific Speed
The document discusses the selection of turbines based on head and specific speed. It defines turbines as devices that extract energy from fluid and describes the main types as impulse and reaction turbines. Impulse turbines use velocity to move the runner while reaction turbines develop power from pressure and moving fluid. Turbines are selected based on the specific conditions like head and flow. High head turbines operate over 250m head with low flow. Francis turbines are used for medium heads from 45-250m. Kaplan turbines are suitable for low heads under 45m with high flow. Specific speed is also used to select turbines, with low specific speed turbines like Pelton used for high heads and high specific speed propeller turbines for low heads.
Hydraulic turbines
Hydraulic turbines use the energy of flowing water to rotate a runner wheel and convert the energy into mechanical rotation. They are classified in several ways:
1. Based on the hydraulic action - Impulse turbines convert water's kinetic energy before striking the runner, while reaction turbines use both pressure and kinetic energy.
2. Based on flow direction - Radial flow turbines have inward or outward flow, axial flow is parallel to rotation, and tangential flow strikes the runner tangentially.
3. Based on head and flow - High, medium, low, and very low head turbines include Pelton, Francis, Kaplan, and propeller turbines respectively.
Velocity Triangle for Moving Blade of an impulse Turbine
Impulse turbines use steam jets to transfer momentum to rotating blades, while reaction turbines use the pressure of steam flowing over stationary and moving blades to rotate the shaft. Both use velocity triangles to analyze steam flow at the inlet and outlet of curved blades. The power produced depends on the change in steam whirl velocity as it flows through the blades. Reaction turbines experience axial thrust from the change in steam flow velocity from inlet to outlet.
Francis turbine
The document discusses the Francis turbine, which is the most commonly used water turbine today. It was invented in Lowell, Massachusetts by James Francis in 1849. He was able to redesign the existing Boyden turbine to significantly increase its efficiency from 65% to 88%.
The key components of a Francis turbine include a scroll casing, guide vanes, runner, and draft tube. Water enters the scroll casing and is directed by the guide vanes to spin the radial vanes of the runner, which is connected to a shaft to power a generator. The draft tube recaptures pressure from the water exiting the runner.
Francis turbines can operate over a wide range of heads from 10-650 meters and
Turbomachinery presentation
Turbomachines are devices that transfer energy between a rotating element and a fluid due to dynamic action, resulting in changes to the fluid's pressure and momentum. Turbomachines have various applications including fluid transfer, electrical power generation, and aircraft propulsion. They can be classified based on the direction of energy transfer, flow direction, fluid condition, and position of the rotating shaft. Principal components include a rotating element, stator, input/output shafts, and a housing. Modern turbomachines can generate over 250 MW of power and accommodate high pressures and temperatures.
Turbine.ppt
Turbines work by converting the kinetic energy of a moving fluid like water, steam, gas or wind into mechanical rotational energy. There are different types of turbines that are designed based on how the fluid interacts with the turbine blades including impulse turbines where the fluid hits the blades at high speed, and reaction turbines where the pressure of the fluid changes as it passes through the rotor blades. Common types of turbines include water turbines like the Pelton, Francis and Kaplan turbines, steam turbines used in power plants, gas turbines that power aircraft and generators, and wind turbines that convert wind energy into electricity.
Classification of Hydraulic Turbines
from this ppt you can almost aware about the operation of hydraulic turbines and various specification releated to it...
if you want to attains the knowledge about the turbines then must watch this ppt,... thankyou!
if you want to follow me on twitter then contact me at
ishantgautam51@yahoo.com
Lecture 13 torsion in solid and hollow shafts 1
The document discusses stresses in beams and shafts subjected to torsion. It covers torsional deformation of circular shafts, shear stresses and strains from torques, polar moment of inertia, torsional rigidity, and stresses in shafts under combined bending and torsion loads. Key formulas are presented relating torque to shear stress, polar modulus, bending stress, and principal stresses under combined loading. Applications to solid and hollow circular shafts and bars subjected to forces, bending moments, shear forces, and torques are described.
Francis Turbine
Watch Video of this presentation on Link: https://youtu.be/nt9-q5SDaqk
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Hydraulic turbines
contains pelton turbine , kaplan turbine , and francis turbine with their working. contains GIF and videos of working
Performance of-turbines
hi, I am sujon I just completed graduate at International University of Business Agriculture and Technology in Bangladesh Department of Mechanical Engineering
MRE 510 ppt... 2 Hydraulic Turbines.pptx
Hydraulic turbines convert the potential energy of water into electrical energy. They are classified based on factors like head, flow rate, direction of water flow, and specific speed. Common turbine types include impulse (Pelton) and reaction (Francis, Kaplan) turbines. Proper turbine selection depends on site conditions like head and flow. Draft tubes recover exit energy in mixed and axial flow turbines. Cavitation can damage turbine blades and is avoided through design techniques. Pump-turbines (PATs) provide a low-cost option for micro-hydro sites, but have performance limitations compared to dedicated turbines.
More Related Content
What's hot
Se prod thermo_examples_compressor
The document provides 10 examples of calculations related to compressors. The examples calculate various parameters such as indicated power, cylinder bore, volumetric efficiency, power required, heat transferred, swept volume, delivery temperature, and ratio of cylinder diameters for maximum efficiency. The examples involve single-stage and two-stage compressors operating at various pressures and temperatures.
Hydraulic turbines
This document summarizes three common types of hydraulic turbines: Pelton, Kaplan, and Francis turbines. It describes their basic workings, key features, and differences. The Pelton wheel uses high-pressure jets to spin buckets on a single wheel. The Kaplan turbine resembles a ship propeller and is used for lower heads. The Francis turbine has many curved blades inside a closed casing and operates under mixed radial and axial flow. It also compares impulse and reaction turbines and provides details on the Kaplan and Francis turbines.
Hydraulic Turbines-Classification,Impulse and Reaction Turbine, Layout of Hyd...
Hydraulic Turbines-Classification,Impulse and Reaction Turbine, Layout of Hyd...Mechanicalstudents.com
Hydraulic turbines are machines which convert hydraulic energy into mechanical energy. If the machine transforms mechanical energy into hydraulic energy it is called a pump. Thus in turbines, fluid does work on the machine and machine produces power. but, the pump absorbs the power and work is done on the fluid.
For more information, visit https://mechanicalstudents.com/hydraulic-turbines-classification-impulse-and-reaction-turbine-layout-of-hydroelectric-power-plant/Hydraulic machines
This document provides an overview of hydraulic machines and turbines. It defines hydraulic machines as machines that convert hydraulic energy (water energy) to mechanical energy or vice versa. Turbines are hydraulic machines that convert hydraulic energy to mechanical energy, while pumps convert mechanical energy to hydraulic energy. The document then discusses various types of turbines in more detail, including impulse turbines like the Pelton turbine and reaction turbines like the Francis turbine and Kaplan turbine. It covers the basic workings, components, applications and efficiencies of these different turbine types. Finally, it introduces the concept of performance characteristic curves for turbines.
Turbo machinery
This document discusses turbomachinery and hydraulic machinery. It defines turbomachinery as machines that transfer energy between a rotor and fluid, including turbines and compressors. Turbomachines can be open or closed, and categorized by flow type as axial, radial, or mixed. They are further classified as machines that absorb energy (pumps, fans, compressors) or produce energy (turbines). Hydraulic machinery uses liquid fluid power to do work, with pressurized hydraulic fluid controlled by valves and distributed through hoses to hydraulic motors and cylinders. Hydraulic machinery is popular due to its ability to transfer large power through small tubes and hoses.
Basic Mechanical Engineering- Hydraulic turbines
The document discusses different types of hydraulic turbines used to convert hydraulic energy from falling or flowing water into mechanical energy. It classifies turbines based on the type of energy at the inlet as either impulse turbines (only kinetic energy) or reaction turbines (both pressure and kinetic energy). It describes the Pelton wheel and Francis turbine as examples of each type. It further classifies turbines based on the main flow direction and provides ranges for suitable head based on specific speed. In summary, the document provides an overview of common hydraulic turbine classifications and examples like the Pelton and Francis turbines used for high and medium heads respectively.
Pelton Wheel Turbine Part 2
Watch Video of this presentation on Link: https://youtu.be/bHKaPBgDk6g
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Fluid MechanicsVortex flow and impulse momentum
1. The momentum equation relates the total force on a fluid system to the rate of change of momentum as fluid flows through a control volume.
2. Forces can be resolved into components in different directions for multi-dimensional flows. The total force is equal to the sum of pressure, body, and reaction forces.
3. Examples of applying the momentum equation include calculating forces on a pipe bend, nozzle, jet impact, and curved vane due to changing fluid momentum. Setting up coordinate systems aligned with the flow is important for resolving forces into components.
Hydraulic Turbines
1. The document discusses various topics related to hydraulic turbines including their classification, selection, design principles of Pelton, Francis and Kaplan turbines, draft tubes, surge tanks, governing, unit quantities, characteristic curves, similitude analysis and cavitation.
2. Hydraulic turbines are classified based on the type of energy at the inlet, direction of flow through the runner, head at the inlet, and specific speed. Pelton wheels are impulse turbines suitable for high heads while Francis and Kaplan turbines are reaction turbines for lower heads.
3. The design of each turbine type involves guidelines related to jet ratio, speed ratio, velocities, discharge, power and efficiency calculations. Characteristic curves show the performance of a
Hydraulic turbine
Turbines convert hydraulic energy from flowing water into mechanical energy via a shaft. Francis turbines, invented in 1848, are a common type of inward reaction turbine that convert both kinetic and pressure energy. They have main components like a spiral casing, guide vanes, runner, and draft tube. Pelton wheels are impulse turbines that use nozzles to convert water's pressure energy into kinetic energy before it strikes buckets on the runner to rotate it. They are suitable for high head applications.
Selection of Turbine With Respect to Head VS Specific Speed
The document discusses the selection of turbines based on head and specific speed. It defines turbines as devices that extract energy from fluid and describes the main types as impulse and reaction turbines. Impulse turbines use velocity to move the runner while reaction turbines develop power from pressure and moving fluid. Turbines are selected based on the specific conditions like head and flow. High head turbines operate over 250m head with low flow. Francis turbines are used for medium heads from 45-250m. Kaplan turbines are suitable for low heads under 45m with high flow. Specific speed is also used to select turbines, with low specific speed turbines like Pelton used for high heads and high specific speed propeller turbines for low heads.
Hydraulic turbines
Hydraulic turbines use the energy of flowing water to rotate a runner wheel and convert the energy into mechanical rotation. They are classified in several ways:
1. Based on the hydraulic action - Impulse turbines convert water's kinetic energy before striking the runner, while reaction turbines use both pressure and kinetic energy.
2. Based on flow direction - Radial flow turbines have inward or outward flow, axial flow is parallel to rotation, and tangential flow strikes the runner tangentially.
3. Based on head and flow - High, medium, low, and very low head turbines include Pelton, Francis, Kaplan, and propeller turbines respectively.
Velocity Triangle for Moving Blade of an impulse Turbine
Impulse turbines use steam jets to transfer momentum to rotating blades, while reaction turbines use the pressure of steam flowing over stationary and moving blades to rotate the shaft. Both use velocity triangles to analyze steam flow at the inlet and outlet of curved blades. The power produced depends on the change in steam whirl velocity as it flows through the blades. Reaction turbines experience axial thrust from the change in steam flow velocity from inlet to outlet.
Francis turbine
The document discusses the Francis turbine, which is the most commonly used water turbine today. It was invented in Lowell, Massachusetts by James Francis in 1849. He was able to redesign the existing Boyden turbine to significantly increase its efficiency from 65% to 88%.
The key components of a Francis turbine include a scroll casing, guide vanes, runner, and draft tube. Water enters the scroll casing and is directed by the guide vanes to spin the radial vanes of the runner, which is connected to a shaft to power a generator. The draft tube recaptures pressure from the water exiting the runner.
Francis turbines can operate over a wide range of heads from 10-650 meters and
Turbomachinery presentation
Turbomachines are devices that transfer energy between a rotating element and a fluid due to dynamic action, resulting in changes to the fluid's pressure and momentum. Turbomachines have various applications including fluid transfer, electrical power generation, and aircraft propulsion. They can be classified based on the direction of energy transfer, flow direction, fluid condition, and position of the rotating shaft. Principal components include a rotating element, stator, input/output shafts, and a housing. Modern turbomachines can generate over 250 MW of power and accommodate high pressures and temperatures.
Turbine.ppt
Turbines work by converting the kinetic energy of a moving fluid like water, steam, gas or wind into mechanical rotational energy. There are different types of turbines that are designed based on how the fluid interacts with the turbine blades including impulse turbines where the fluid hits the blades at high speed, and reaction turbines where the pressure of the fluid changes as it passes through the rotor blades. Common types of turbines include water turbines like the Pelton, Francis and Kaplan turbines, steam turbines used in power plants, gas turbines that power aircraft and generators, and wind turbines that convert wind energy into electricity.
Classification of Hydraulic Turbines
from this ppt you can almost aware about the operation of hydraulic turbines and various specification releated to it...
if you want to attains the knowledge about the turbines then must watch this ppt,... thankyou!
if you want to follow me on twitter then contact me at
ishantgautam51@yahoo.com
Lecture 13 torsion in solid and hollow shafts 1
The document discusses stresses in beams and shafts subjected to torsion. It covers torsional deformation of circular shafts, shear stresses and strains from torques, polar moment of inertia, torsional rigidity, and stresses in shafts under combined bending and torsion loads. Key formulas are presented relating torque to shear stress, polar modulus, bending stress, and principal stresses under combined loading. Applications to solid and hollow circular shafts and bars subjected to forces, bending moments, shear forces, and torques are described.
Francis Turbine
Watch Video of this presentation on Link: https://youtu.be/nt9-q5SDaqk
For notes/articles, Visit my blog (link is given below).
For Video, Visit our YouTube Channel (link is given below).
Any Suggestions/doubts/reactions, please leave in the comment box.
Follow Us on
YouTube: https://www.youtube.com/channel/UCVPftVoKZoIxVH_gh09bMkw/
Blog: https://e-gyaankosh.blogspot.com/
Facebook: https://www.facebook.com/egyaankosh/
Hydraulic turbines
contains pelton turbine , kaplan turbine , and francis turbine with their working. contains GIF and videos of working
What's hot (20)
Hydraulic Turbines-Classification,Impulse and Reaction Turbine, Layout of Hyd...
Hydraulic Turbines-Classification,Impulse and Reaction Turbine, Layout of Hyd...
Selection of Turbine With Respect to Head VS Specific Speed
Selection of Turbine With Respect to Head VS Specific Speed
Velocity Triangle for Moving Blade of an impulse Turbine
Velocity Triangle for Moving Blade of an impulse Turbine
Similar to specific speed
Performance of-turbines
hi, I am sujon I just completed graduate at International University of Business Agriculture and Technology in Bangladesh Department of Mechanical Engineering
MRE 510 ppt... 2 Hydraulic Turbines.pptx
Hydraulic turbines convert the potential energy of water into electrical energy. They are classified based on factors like head, flow rate, direction of water flow, and specific speed. Common turbine types include impulse (Pelton) and reaction (Francis, Kaplan) turbines. Proper turbine selection depends on site conditions like head and flow. Draft tubes recover exit energy in mixed and axial flow turbines. Cavitation can damage turbine blades and is avoided through design techniques. Pump-turbines (PATs) provide a low-cost option for micro-hydro sites, but have performance limitations compared to dedicated turbines.
3. water turbine (intro)
This document discusses water turbines used in hydroelectric power plants. It defines key terms like specific energy, gross head, gross specific hydraulic energy, and gross power. It also describes different types of turbines like impulse turbines (Pelton, Turgo) and reaction turbines (Francis, Kaplan, Bulb) and compares their characteristics. It discusses concepts like specific speed, speed number, unit and specific quantities that are used to classify and select turbines based on factors like head, rotational speed, efficiency and more. It also provides examples of problems calculating speed number, specific speed and selecting the suitable turbine type.
STUDY AND ANALYSIS OF STEAM TURBINE AND TURBINE LOSSES
This document provides an abstract for a mini-project presentation on studying and analyzing steam turbines and turbine losses at a thermal power plant (KTPS). The abstract introduces the objectives of studying steam turbine performance and evaluating turbine losses. It also briefly discusses the basic components and working of a steam turbine power plant. The document further includes sections on turbine theory, classifications, construction, components, losses, data collection and calculations for turbine efficiency.
Hydraulic turbines
This document discusses hydraulic turbines and pumps. It defines turbines as machines that convert hydraulic energy to mechanical energy, and pumps as the opposite, converting mechanical to hydraulic energy. It describes the key components and classifications of impulse and reaction turbines like the Pelton wheel and Francis turbine. It also covers turbine characteristics such as head, power, and efficiency. Characteristic curves are presented to show turbine and pump performance under varying operating conditions.
Reaction turbbine
This presentation discusses reaction turbines. It defines a reaction turbine as a type of turbine that develops torque by reacting to the pressure or weight of a fluid based on Newton's third law of motion. The document outlines the working principle of reaction turbines and describes the main types - radial flow, axial flow, and mixed flow turbines. Examples of specific reaction turbines are provided, including the Francis, Kaplan, and propeller turbines. The advantages and disadvantages of reaction turbines are summarized. Key concepts like pressure compounding, turbine blade stages, and the pressure-velocity diagram for reaction blades are also explained briefly.
Hydel lecture-2
This document discusses different types of hydraulic turbines used in hydroelectric power plants. It describes how impulse turbines like Pelton wheels use jet water to drive the turbine, while reaction turbines like Francis and Kaplan turbines use both pressure and velocity of water filling the runner casing. It provides details on Pelton, Francis, and Kaplan turbine designs and applications based on specific speed. For a case study river with 80m head and 400L/s flow, the document recommends using a Francis turbine instead of a single Pelton wheel, since the specific speed calculated is outside the typical Pelton wheel range.
MODULE-V_STEAM TURBINES.pptx
1) A steam turbine uses the dynamic action of steam to convert the energy of high pressure and high temperature steam into mechanical power. Steam is expanded in nozzles which converts pressure energy to kinetic energy.
2) There are two main types of steam turbines - impulse turbines which use the kinetic energy of steam and reaction turbines which use continuous pressure drop of steam as it passes through fixed and moving blades.
3) Compounding involves arranging steam expansion in multiple stages to reduce rotor speed. Methods include velocity compounding using multiple moving blades, pressure compounding with partial expansion at each nozzle, and pressure-velocity compounding combining both.
200118 chapter 8 hydromechanical
The document provides information on hydro-electric power plants and their components. It discusses the working principles of hydro-electric power plants, how they utilize the potential energy of stored water to run turbines and generators. It also describes the layout of hydroelectric plants and different types of turbines used, including Pelton, Francis, Kaplan and bulb turbines. The document discusses the components, working principles and applications of these various turbine types. It further covers topics like specific speed, governing systems, generators, pumps and factors that influence turbine selection for a hydroelectric project.
CH4 Turbine selection.pptx
This document discusses turbine selection and capacity determination. It covers turbine classifications based on how hydraulic energy is converted, including impulse and reaction turbines. It also discusses specific speed as an important criterion for turbine selection. Specific speed is defined as the speed at which a turbine produces 1 kW of power given a head of 1 m. Turbines have optimal efficiency ranges that correspond to their specific speed ranges. The document provides specific speed ranges for common turbine types like Pelton, Francis and Kaplan turbines. It also discusses other selection factors like cavitation, rotational speed determined by generator speed, and maximum efficiency.
Hydraulic Turbines – II: Governing of turbines – Surge tanks – Unit and speci...
Hydraulic Turbines – II: Governing of turbines – Surge tanks – Unit and specific turbines – Unit speed
– Unit quantity – Unit power – Specific speed – Performance characteristics – Geometric similarity –
Cavitation. Selection of turbines
Hydal power plant
The document provides information about hydropower technology. It discusses different types of hydropower turbines including impulse turbines like Pelton wheels and reaction turbines like Francis turbines. It describes components of hydropower plants such as dams, diversion facilities, and pumped storage. It also covers topics like site selection, classification of hydropower plants based on various factors, and technologies used in large, small, and micro hydropower systems.
HVAC Pumps and End Suction Pumps
Callaghan Pumps offers the best HVAC Pumps and End Suction Pumps in United States. We have the best quality products you can install in your home.
W-2-Ch-2-Intro to Power plants.ppt
The document discusses the history and evolution of military vehicle power plants. It traces the development from modified agricultural tractors in WWI with 50-90 BHP and 5-8 MPH speeds to modern power plants with 1000-2000 BHP. Key requirements for military vehicle power plants include compactness, high power output, reliability, multi-fuel capability, and ability to operate under extreme conditions. The document compares power plants of various current and historic military vehicles and outlines future trends toward higher power-to-weight ratios and potential shifts toward gas turbine engines.
Selection of Turbine | Fluid Mechanics
This document provides a comparison of different types of hydraulic turbines and considerations for selecting the appropriate turbine for a hydroelectric power plant. It compares Pelton, Francis, and Kaplan turbines based on criteria such as head, discharge required, efficiency, and more. The key points for selection include considering the specific speed to match the generator speed, choosing the turbine with the highest efficiency, ability to operate at part loads, available head and fluctuations, and shaft orientation. The turbines are recommended for different head ranges, with Pelton used for very high heads and Kaplan for heads below 30 meters.
Gas Turbine PPT
A gas turbine, also called a combustion turbine, is a type of internal combustion engine. It has an upstream rotating compressor coupled toa downstream turbine, and a combustion chamber in-between. Energy is added to the gas stream in the combustor, where fuel is mixed with air and ignited. In the high-pressure environment of the combustor, combustion of the fuel increases the temperature. The products of the combustion are forced into the turbine section
Visit https://www.topicsforseminar.com to Download
Bera Syul Hydro power project Presentation
The document summarizes key details about a 198 MW hydroelectric power plant including its components and operating principles. It describes the plant having 3 units each with 60 MW capacity upgraded to 66 MW. Key components discussed are the Francis turbine that converts kinetic energy of water to mechanical energy, the spherical valve, the rotor cooled by pressurized oil and the stator cooled by water from the turbine outlet. The output of the stator depends on factors like frequency which relates to rotor speed, and power which relates to head and water flow from the dam reservoir through tunnels.
Steam turbine
The document discusses the working principles of steam turbines. It explains that steam turbines extract thermal energy from pressurized steam to produce rotary motion. It describes the ideal Rankine cycle that steam turbines follow, involving isentropic compression, heating, expansion, and cooling processes. There are two main types - impulse turbines that convert steam pressure to velocity and reaction turbines that use both pressure and the reaction force of steam. The document classifies steam turbines and discusses their applications in power generation.
Turbine and it's classification.pptx
A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. The work produced by a turbine can be used for generating electrical power when combined with a generator.
Turbines are the hydraulic machines which convert hydraulic energy into mechanical energy.
Hydraulic turbines1
This document provides an overview of hydraulic turbines, including their history, classification, and key types. It discusses Pelton, Francis, Kaplan, and propeller turbines, comparing their components, working principles, efficiencies, applications, and variations. Hydraulic turbines convert the potential energy of water into rotational mechanical energy via impulse or reaction, and selection depends on factors like head, flow rate, and specific speed. Cavitation, runaway speed, and efficiencies such as hydraulic, mechanical, and overall are also defined.
Similar to specific speed (20)
STUDY AND ANALYSIS OF STEAM TURBINE AND TURBINE LOSSES
STUDY AND ANALYSIS OF STEAM TURBINE AND TURBINE LOSSES
Hydraulic Turbines – II: Governing of turbines – Surge tanks – Unit and speci...
Hydraulic Turbines – II: Governing of turbines – Surge tanks – Unit and speci...
Recently uploaded
学校原版美国波士顿大学毕业证学历学位证书原版一模一样
原版一模一样【微信：741003700 】【美国波士顿大学毕业证学历学位证书】【微信：741003700 】学位证，留信认证（真实可查，永久存档）offer、雅思、外壳等材料/诚信可靠,可直接看成品样本，帮您解决无法毕业带来的各种难题！外壳，原版制作，诚信可靠，可直接看成品样本。行业标杆！精益求精，诚心合作，真诚制作！多年品质 ,按需精细制作，24小时接单,全套进口原装设备。十五年致力于帮助留学生解决难题，包您满意。
本公司拥有海外各大学样板无数，能完美还原海外各大学 Bachelor Diploma degree, Master Degree Diploma
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
artificial intelligence and data science contents.pptx
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
Hematology Analyzer Machine - Complete Blood Count
The CBC machine is a common diagnostic tool used by doctors to measure a patient's red blood cell count, white blood cell count and platelet count. The machine uses a small sample of the patient's blood, which is then placed into special tubes and analyzed. The results of the analysis are then displayed on a screen for the doctor to review. The CBC machine is an important tool for diagnosing various conditions, such as anemia, infection and leukemia. It can also help to monitor a patient's response to treatment.
Software Engineering and Project Management - Introduction, Modeling Concepts...
Introduction, Modeling Concepts and Class Modeling: What is Object orientation? What is OO development? OO Themes; Evidence for usefulness of OO development; OO modeling history. Modeling
as Design technique: Modeling, abstraction, The Three models. Class Modeling: Object and Class Concept, Link and associations concepts, Generalization and Inheritance, A sample class model, Navigation of class models, and UML diagrams
Building the Analysis Models: Requirement Analysis, Analysis Model Approaches, Data modeling Concepts, Object Oriented Analysis, Scenario-Based Modeling, Flow-Oriented Modeling, class Based Modeling, Creating a Behavioral Model.
BRAIN TUMOR DETECTION for seminar ppt.pdf
BRAIN TUMOR DETECTION
AND CLASSIFICATION USING
ARTIFICIAL INTELLIGENCE
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Climate change's impact on the planet forced the United Nations and governments to promote green energies and electric transportation. The deployments of photovoltaic (PV) and electric vehicle (EV) systems gained stronger momentum due to their numerous advantages over fossil fuel types. The advantages go beyond sustainability to reach financial support and stability. The work in this paper introduces the hybrid system between PV and EV to support industrial and commercial plants. This paper covers the theoretical framework of the proposed hybrid system including the required equation to complete the cost analysis when PV and EV are present. In addition, the proposed design diagram which sets the priorities and requirements of the system is presented. The proposed approach allows setup to advance their power stability, especially during power outages. The presented information supports researchers and plant owners to complete the necessary analysis while promoting the deployment of clean energy. The result of a case study that represents a dairy milk farmer supports the theoretical works and highlights its advanced benefits to existing plants. The short return on investment of the proposed approach supports the paper's novelty approach for the sustainable electrical system. In addition, the proposed system allows for an isolated power setup without the need for a transmission line which enhances the safety of the electrical network
Null Bangalore | Pentesters Approach to AWS IAM
#Abstract:
- Learn more about the real-world methods for auditing AWS IAM (Identity and Access Management) as a pentester. So let us proceed with a brief discussion of IAM as well as some typical misconfigurations and their potential exploits in order to reinforce the understanding of IAM security best practices.
- Gain actionable insights into AWS IAM policies and roles, using hands on approach.
#Prerequisites:
- Basic understanding of AWS services and architecture
- Familiarity with cloud security concepts
- Experience using the AWS Management Console or AWS CLI.
- For hands on lab create account on [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
# Scenario Covered:
- Basics of IAM in AWS
- Implementing IAM Policies with Least Privilege to Manage S3 Bucket
- Objective: Create an S3 bucket with least privilege IAM policy and validate access.
- Steps:
- Create S3 bucket.
- Attach least privilege policy to IAM user.
- Validate access.
- Exploiting IAM PassRole Misconfiguration
-Allows a user to pass a specific IAM role to an AWS service (ec2), typically used for service access delegation. Then exploit PassRole Misconfiguration granting unauthorized access to sensitive resources.
- Objective: Demonstrate how a PassRole misconfiguration can grant unauthorized access.
- Steps:
- Allow user to pass IAM role to EC2.
- Exploit misconfiguration for unauthorized access.
- Access sensitive resources.
- Exploiting IAM AssumeRole Misconfiguration with Overly Permissive Role
- An overly permissive IAM role configuration can lead to privilege escalation by creating a role with administrative privileges and allow a user to assume this role.
- Objective: Show how overly permissive IAM roles can lead to privilege escalation.
- Steps:
- Create role with administrative privileges.
- Allow user to assume the role.
- Perform administrative actions.
- Differentiation between PassRole vs AssumeRole
Try at [killercoda.com](https://killercoda.com/cloudsecurity-scenario/)
一比一原版(CalArts毕业证)加利福尼亚艺术学院毕业证如何办理
CalArts毕业证学历书【微信95270640】CalArts毕业证’圣力嘉学院毕业证《Q微信95270640》办理CalArts毕业证√文凭学历制作{CalArts文凭}购买学历学位证书本科硕士,CalArts毕业证学历学位证【实体公司】办毕业证、成绩单、学历认证、学位证、文凭认证、办留信网认证、（网上可查，实体公司，专业可靠）
(诚招代理)办理国外高校毕业证成绩单文凭学位证,真实使馆公证（留学回国人员证明）真实留信网认证国外学历学位认证雅思代考国外学校代申请名校保录开请假条改GPA改成绩ID卡
1.高仿业务:【本科硕士】毕业证,成绩单（GPA修改）,学历认证（教育部认证）,大学Offer,,ID,留信认证,使馆认证,雅思,语言证书等高仿类证书；
2.认证服务: 学历认证（教育部认证）,大使馆认证（回国人员证明）,留信认证（可查有编号证书）,大学保录取,雅思保分成绩单。
3.技术服务：钢印水印烫金激光防伪凹凸版设计印刷激凸温感光标底纹镭射速度快。
办理加利福尼亚艺术学院加利福尼亚艺术学院毕业证文凭证书流程：
1客户提供办理信息：姓名生日专业学位毕业时间等（如信息不确定可以咨询顾问：我们有专业老师帮你查询）；
2开始安排制作毕业证成绩单电子图；
3毕业证成绩单电子版做好以后发送给您确认；
4毕业证成绩单电子版您确认信息无误之后安排制作成品；
5成品做好拍照或者视频给您确认；
6快递给客户（国内顺丰国外DHLUPS等快读邮寄）
-办理真实使馆公证（即留学回国人员证明）
-办理各国各大学文凭（世界名校一对一专业服务,可全程监控跟踪进度）
-全套服务：毕业证成绩单真实使馆公证真实教育部认证。让您回国发展信心十足！
（详情请加一下 文凭顾问+微信:95270640）欢迎咨询！子小伍玩小伍比山娃小一岁虎头虎脑的很霸气父亲让山娃跟小伍去夏令营听课山娃很高兴夏令营就设在附近一所小学山娃发现那所小学比自己的学校更大更美操场上还铺有塑胶跑道呢里面很多小朋友一班一班的快快乐乐原来城里娃都藏这儿来了怪不得平时见不到他们山娃恍然大悟起来吹拉弹唱琴棋书画山娃都不懂却什么都想学山娃怨自己太笨什么都不会斟酌再三山娃终于选定了学美术当听说每月要交元时父亲犹豫了山娃也说爸算了吧咱学校一学期才转
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Medical image analysis has witnessed significant advancements with deep learning techniques. In the domain of brain tumor segmentation, the ability to
precisely delineate tumor boundaries from magnetic resonance imaging (MRI)
scans holds profound implications for diagnosis. This study presents an ensemble convolutional neural network (CNN) with transfer learning, integrating
the state-of-the-art Deeplabv3+ architecture with the ResNet18 backbone. The
model is rigorously trained and evaluated, exhibiting remarkable performance
metrics, including an impressive global accuracy of 99.286%, a high-class accuracy of 82.191%, a mean intersection over union (IoU) of 79.900%, a weighted
IoU of 98.620%, and a Boundary F1 (BF) score of 83.303%. Notably, a detailed comparative analysis with existing methods showcases the superiority of
our proposed model. These findings underscore the model’s competence in precise brain tumor localization, underscoring its potential to revolutionize medical
image analysis and enhance healthcare outcomes. This research paves the way
for future exploration and optimization of advanced CNN models in medical
imaging, emphasizing addressing false positives and resource efficiency.
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
This document serves as a comprehensive step-by-step guide on how to effectively use PyCharm for remote debugging of the Windows Subsystem for Linux (WSL) on a local Windows machine. It meticulously outlines several critical steps in the process, starting with the crucial task of enabling permissions, followed by the installation and configuration of WSL.
The guide then proceeds to explain how to set up the SSH service within the WSL environment, an integral part of the process. Alongside this, it also provides detailed instructions on how to modify the inbound rules of the Windows firewall to facilitate the process, ensuring that there are no connectivity issues that could potentially hinder the debugging process.
The document further emphasizes on the importance of checking the connection between the Windows and WSL environments, providing instructions on how to ensure that the connection is optimal and ready for remote debugging.
It also offers an in-depth guide on how to configure the WSL interpreter and files within the PyCharm environment. This is essential for ensuring that the debugging process is set up correctly and that the program can be run effectively within the WSL terminal.
Additionally, the document provides guidance on how to set up breakpoints for debugging, a fundamental aspect of the debugging process which allows the developer to stop the execution of their code at certain points and inspect their program at those stages.
Finally, the document concludes by providing a link to a reference blog. This blog offers additional information and guidance on configuring the remote Python interpreter in PyCharm, providing the reader with a well-rounded understanding of the process.
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
22CYT12-Unit-V-E Waste and its Management.ppt
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Unit-III-ELECTROCHEMICAL STORAGE DEVICES.ppt
Batteries -Introduction – Types of Batteries – discharging and charging of battery - characteristics of battery –battery rating- various tests on battery- – Primary battery: silver button cell- Secondary battery :Ni-Cd battery-modern battery: lithium ion battery-maintenance of batteries-choices of batteries for electric vehicle applications.
Fuel Cells: Introduction- importance and classification of fuel cells - description, principle, components, applications of fuel cells: H2-O2 fuel cell, alkaline fuel cell, molten carbonate fuel cell and direct methanol fuel cells.
Recently uploaded (20)
artificial intelligence and data science contents.pptx
artificial intelligence and data science contents.pptx
Hematology Analyzer Machine - Complete Blood Count
Hematology Analyzer Machine - Complete Blood Count
Software Engineering and Project Management - Introduction, Modeling Concepts...
Software Engineering and Project Management - Introduction, Modeling Concepts...
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
Electric vehicle and photovoltaic advanced roles in enhancing the financial p...
4. Mosca vol I -Fisica-Tipler-5ta-Edicion-Vol-1.pdf
4. Mosca vol I -Fisica-Tipler-5ta-Edicion-Vol-1.pdf
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Redefining brain tumor segmentation: a cutting-edge convolutional neural netw...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
Use PyCharm for remote debugging of WSL on a Windo cf5c162d672e4e58b4dde5d797...
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
IEEE Aerospace and Electronic Systems Society as a Graduate Student Member
specific speed
- 1. SPECIFIC SPEED CREATED BY : RITU GOSWAMI ROLL NO : 18545 DEPARTMENT : APPLIED SCIENCE (IT)
- 2. WHAT IS SPECIFIC SPEED ? – Specific speed of a turbine is defined as the speed of a geometrically similar turbine which produce a unit power when working under a unit head. – By geometrically similar means that turbine is identical in shape, dimensions, blade angles and gate opening etc. it is denoted by the symbol Ns. The specific speed is used in comparing the different type of turbines as every of turbine has different specific speed.
- 3. SPECIFIC SPEED SR. NO. TYPES OF TURBINE SPECIFIC SPEED 1. Pelton wheel with single jet(nozzle) 80-30 2. Pelton wheel with multiple jet(nozzle) 30-50 3. Francis turbine 50-250 4. Kaplan turbine 250-850
- 4. SELECTION OF TURBINE – 1. HEAD – 2. SPECIFIC SPEED – 3. PART LOAD OPERATIONS – 4. NUMBER OF UNITS – 5. CAVITATION – 6. POSITION OF TURBINE SHAFT – 7. COST
- 5. SELECTION OF TURBINE ON THE BASIS OF SPECIFIC SPEED – The specific speed of a pump is defined as the speed of geometrically similar pump that delivers units discharge under units head. – Thus the specific speed , Ns is given as Ns = N√Q/H3/4 – Where N is the speed of the pump in r.p.m – Q is discharge in m3/s and H is head in meters.
- 6. CLASSIFICATION OF HYDRAULIC TURBINES. ACCORDING TO THE SPECIFIC SPEED – According to the specific speed, turbines may be classified as: – (a) high specific speed turbine – (b) medium specific speed turbine – (c) low specific speed of a turbine
- 7. HIGH SPECIFIC SPEED TURBINE. – Specific speed of these turbines are 250 to 850. so these are called as high specific speed turbines. Kaplan and propeller turbine are the examples of high specific speed turbines.
- 9. MEDIUM SPECIFIC SPEED TURBINE. – Specific speed of these turbines are 50 to 250 . So these are called medium specific speed turbine. Francis turbine turbine is the example of medium specific speed turbine.
- 10. Francis turbine
- 11. LOW SPECIFIC SPEED TURBINE – Specific speed of these turbines are 8 to 30 with single nozzle and up to 50 with nozzles. So these are called low specific speed turbines. Pelton turbine is the example of low specific speed.
- 12. Pelton turbine
- 13. Table gives the values of specific speed of different types of pump. Specific speed of centrifugal pump SR. NO. PUMP SPEED SPECIFIC SPEED 1. Radial flow Slow Medium High 10-30 30-50 50-80 2. Mixed flow 80-160 3. Axial flow 160-425
- 14. THANK YOU
- 15. REFERENCES – https://en.wikipedia.org/wiki/Specific_speed – www.engineeringtoolbox.com/specific-speed-pump-fan-d_637.html – Basics of mechanical engineering by vineet jain