The turbine capable of working under the high potential head of water is the Pelton Wheel Turbine which works on the head greater than 300 m.
The runner consists of a circular disc with a suitable number of double semi-ellipsoidal cups known as buckets which are evenly spaced around its Periphery.
One or more nozzles are mounted so that, each directs a jet along the tangent to the circle through the centers of the buckets called the Pitch Circle.
For more information, visit https://mechanicalstudents.com/pelton-wheel-turbine/
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/
This Presentation is about working principle of Pumps.Basic Presentation regarding pumps , will definitely help beginners to learn pump types , their working , their parts etc.
A steam turbine is a prime mover in which the potential energy of the steam is transformed into kinetic energy and later in its turn is transformed into the mechanical energy of rotation of the turbine shaft
Basics of centrifugal. Topics covered are operating principles, energy conversion, components in centrifugal pump, the concept of NPSH, pump rating calculation and affinity laws
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/
This Presentation is about working principle of Pumps.Basic Presentation regarding pumps , will definitely help beginners to learn pump types , their working , their parts etc.
A steam turbine is a prime mover in which the potential energy of the steam is transformed into kinetic energy and later in its turn is transformed into the mechanical energy of rotation of the turbine shaft
Basics of centrifugal. Topics covered are operating principles, energy conversion, components in centrifugal pump, the concept of NPSH, pump rating calculation and affinity laws
Presentation includes working principle of waterjet propulsion, geometry of the components and the Pro's and cons of the system along with the hintory of the system.
Modal 04: Hydraulic Turbines (Question Number 7 a - 7 b & 8a - 8b)
i. Definition
ii. Classification of Hydraulic Turbines
iii. Various efficiencies of Hydraulic Turbines and Various types of Head
iv. Pelton Wheel – Principle of working,
Velocity triangles,
Maximum efficiency
Design parameters,
Numerical problems.
v. Francis turbine – Principle of working
Velocity triangles
Design parameters
Numerical problems
vi. Kaplan and Propeller turbines - Principle of working
Velocity triangles
Design parameters
Numerical Problems.
vii. Theory and types of Draft tubes.
Vibration Monitoring and its Benefits was presented in the article in a detailed way. For more details, Visit https://mechanicalstudents.com/what-is-the-theory-of-vibration-isolation-and-transmissibility/
Rolling Process under Metal Forming Process was presented in the article in a detailed way. For more details, Visit https://mechanicalstudents.com/metal-forming-process-rolling-forging-extrusion-principle-applications/
Radial Drilling Machine-Parts, Working,Advantages,disadvantages,applications was explained in a detailed way. For more information, Visit https://mechanicalstudents.com/radial-drilling-machine-working-principle-construction-mechanism-types/
Grinding process, Specifications of Grinding wheel was explained in a detailed way. For more information, Visit https://mechanicalstudents.com/surface-grinding-machine-grinding-process-specifications-of-grinding-wheel/
Introduction to Refrigeration and Air Conditioning was explained in a detailed way. For more information, Visit https://mechanicalstudents.com/refrigeration-introduction-vapor-compression-refrigeration-system-vapor-absorption-refrigeration-system/
Types of Pattern in Casting Process was explained in a detailed way.
For more information, visit https://mechanicalstudents.com/sand-casting-process-die-casting-shell-mold-casting-investment-casting-process/
The explanation of Performance parameters of IC engines is as follows.
1.Indicated power (I.P):
The total Power developed by the combustion of the fuel in the combustion chamber is called as Indicated power.
2.Break power (B.P):
The Power developed by an engine at the output shaft is called break power.
For more information, visit https://mechanicalstudents.com/ic-engines/
Lamont boiler is a high-pressure water tube boiler with internally fired furnace and the circulation is of forced type. An external agency(pump) is used to circulate throughout the tubes of the boiler. This boiler was invented in 1925 by the famous person Walter Douglas La-Mont.
For more information, visit https://mechanicalstudents.com/high-pressure-boilers-benson-boiler-lamont-boiler/
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/
In the Lamont boiler, the main difficulty experienced is the formation and attachment of bubbles on the inner surface of the heating tubes. The attached Bubbles to the tube surfaces reduce the heat flow and steam generation, as it offers high thermal resistance than Water film.
Benson in 1922, argued that, if the boiler pressure was raised to critical pressure, the steam and water have the same density and therefore, the danger of bubble formation can be eliminated.
For more information, visit https://mechanicalstudents.com/high-pressure-boilers-benson-boiler-lamont-boiler/
Fitting Definition: Fitting is the process of assembling various parts manufactured in the machine shop. The various types of tools used in Engineering Workshop are as follows.
For more, Click https://mechanicalstudents.com/fitting-workshop/
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Final project report on grocery store management system..pdfKamal Acharya
In today’s fast-changing business environment, it’s extremely important to be able to respond to client needs in the most effective and timely manner. If your customers wish to see your business online and have instant access to your products or services.
Online Grocery Store is an e-commerce website, which retails various grocery products. This project allows viewing various products available enables registered users to purchase desired products instantly using Paytm, UPI payment processor (Instant Pay) and also can place order by using Cash on Delivery (Pay Later) option. This project provides an easy access to Administrators and Managers to view orders placed using Pay Later and Instant Pay options.
In order to develop an e-commerce website, a number of Technologies must be studied and understood. These include multi-tiered architecture, server and client-side scripting techniques, implementation technologies, programming language (such as PHP, HTML, CSS, JavaScript) and MySQL relational databases. This is a project with the objective to develop a basic website where a consumer is provided with a shopping cart website and also to know about the technologies used to develop such a website.
This document will discuss each of the underlying technologies to create and implement an e- commerce website.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
2. Pelton Wheel Turbine:Components, Working, Advantages
& Disadvantages
Pelton Wheel Turbine-Components, Working, Advantages & Disadvantages: This is the only impulse type of
hydraulic turbine named after Lester A.Pelton, the American engineer. It is well suited for operating under high
heads.
● The turbine capable of working under the high potential head of water is the Pelton Wheel
Turbine which works on the head greater than 300 m.
● The runner consists of a circular disc with a suitable number of double semi-ellipsoidal cups
known as buckets which are evenly spaced around its Periphery.
● One or more nozzles are mounted so that, each directs a jet along the tangent to the circle
through the centers of the buckets called the Pitch Circle.
● A casing is provided only to prevent the splashing of water and for discharging the water to
the tailrace.
3. Components of the Pelton Wheel Turbine:
The Components of Pelton Wheel Turbine are as follows.
1. Penstock
2. Nozzle and Spear
3. Runner and buckets
4. Casing
5. Breaking Jet
The explanation of the above components is as follows.
1.Penstock:
It is a channel or pipeline which controls the flow of water or it also acts as directing medium for the fluid flow.
4. 2.Nozzle and Spear:
Nozzle:
The nozzle is used to increase the kinetic energy of water which is used to strike the buckets attached
to the runner.
Spear: Spear is used to control the quantity of water striking the buckets. It is a conical needle installed
inside the nozzle to regulate the water flow that is going to strike on the buckets or vanes of the runner.
It is operated by a handwheel
The rate of water flow increases and decreases when the spear is moved in a backward direction and
forward direction respectively and that can be handled by means of a hand wheel(It is operated in the
axial direction).
The setup of Spear along with nozzle is shown in the below figure.
5. 3.Runner and buckets:
The runner with buckets is shown in the figure given above.
● The rotating part of the turbine is a runner which is a circular disc and on the periphery
of which a number of buckets are evenly spaced.
● The buckets are made of two hemispherical cups joined together. The splitter acts as
a wall joining two hemispherical cups which can splits the water into two equal
parts(i.e.on to the hemispherical cups.) deflected through an angle of 160 degrees to
170 degree.
● The buckets of the Pelton turbine are made up of cast iron, cast steel bronze or
stainless steel.
6. 4.Casing:
The case(outer cover) in which turbine is placed so that water can not splash outside(surroundings) called casing. The Pelton
turbine with the casing is shown in the figure given below.
● It also safeguard and helps the water to discharge to the trail race.
● In order to make the casing, Cast iron or fabricated steel plates are used.
5.Braking Jet:
● The spear is pushed in a forward direction into the nozzle so that there should be no water jet impinging onto the
blades of the turbine and making the turbine to stop. but the runner keeps moving due to the inertia.
● To stop the runner in the shortest period of time, a small nozzle is provided which directs a jet of water at the back of
the vanes and that stops the runner of the turbine called as breaking jet.
8. Working of Pelton Wheel turbine:
Water flows from the nozzle with high kinetic energy along the tangent to the path of the runner and when the jet of water
comes in contact with the bucket, it exerts a force on the bucket called as Impulse force.
In order to control the quantity of water striking the runner, the nozzle fitted at the end of penstock is provided with a
spear or needle fixed to the end of a rod.
In this process, the momentum of the water is transferred to the turbine. The impulse force produced due to this
momentum of water causes the turbine to rotate.
The double Semi ellipsoidal buckets split the water jet into two halves which helps in balancing the wheel(runner). This
ensures a smooth transfer of the fluid jet to the turbine wheel.
For maximum power and efficiency, the turbine is designed such that, the water Jet velocity is twice the velocity of the
bucket.
9. Advantages of a Pelton turbine:
● It is easy to maintain
● Intake and exhaust of water takes place at atmospheric pressure hence no draft tube is required
● No cavitation problem
● It has simple construction
● It can work on high heads and low discharge
10. Disadvantages of a Pelton turbine:
● It requires a high head for operation
● Its efficiency decreases quickly with time
● Turbine size is generally large
● Due to the high head, it is very difficult to control variations in the operating head.
11. For Detailed information, click on the given link
https://mechanicalstudents.com/pelton-wheel-turbine/