This outward movement pulls the lever arm down, which raises its other end. Department of mechanical engineering don bosco college of engineering and technology, adbu 1friday, january. Steam turbine governing is the procedure of controlling the flow rate of steam to a steam turbine so as to maintain its speed of rotation as constant. This is a questionnaire with answers that covers all the modules and could be attempted after listening the full course. It consists of a a centrifuge arm, a thrusting arm, and a. This single invention has changed all our lives for the better in many ways, from transport to manufacturing. Below is a video showing a beautiful little steam engine kit, the wilesco 10 which has a centrifugal governor restricting the flow of steam into the engine. Mechanical engineering video lectures from nptel, iit, mit. In a centrifugal pump the liquid enters the pump a. Governor is a heart component of the turbine which controls it during steady state and transient conditions. Learn for free, pay a small fee for exam and get a certificate. Necessity of governor, classification of governors, working principle of centrifugal governors, concept of control force, control force diagram, stability of governor, condition for stability, concept of isochronism, sensitivity of governor, characteristics of governors, hunting of governors.
Porter governor is dead weight loaded type of gravity controlled centrifugal governor. Design of machine elements lecture series on design of machine elements i by prof. From the above merchants circle diagram it is found that there are three right angled triangles are present and all the three right angled triangle possessing common hypotenuse largest side opposite to right angle in a right angled triangle. Notes on flywheels and governors for mechanical engineering gate, psu and ese exams. The governor does this function by controlling the steam flow through the turbine by adjusting the control value. Centrifugal pumps designs and application by robert r. Nptel mechanical engineering fluid mechanics video introduction and. Introduction,types,classification of governor,centrifugal governor, types of governors, governor types,centrifugal governor,inertia governor,explanation of governors,governor lecture.
This document is highly rated by mechanical engineering students and has been viewed 2914 times. To find a simple analytical model for centrifugal compressors in turbochargers why. In a practical situation the load frequently varies from the designed or economic load and thus there always exists a considerable. All related mechanical engineering pdf files could be downloaded and viewed from following forum. Centrifugal governor,also known as watt gover nor invented by james watt in 17th century to regulate the speed of steam engine by altering.
This machine is a centrifugal propulsion machine, which uses simple mechanical motion to generate centrifugal force meant to propel the machine. F t, f c forces are defined based on actual machining conditions. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Engine governors theory of machines engineering reference. Nptel provides elearning through online web and video courses various streams. Book description basic mechanical engineering covers a wide range of topics and engineering concepts that are required to be learnt as in any undergraduate engineering course. Divided into three parts, this book lays emphasis on explaining the logic and physics. Asok kumar mallik department of mechanical engineering iit kanpur.
This is achieved in older units using mechanical and hydraulic arrangements mechanical. Design of machine elements nptel online videos, courses. Effort is the mean force exerted at the sleeve due to a 1% change in the speed of the governor power is the work done at the sleeve for a 1%. The balls are operated by actual change of engine speed in case of centrifugal governor. Me mechanical online portal for mechanical engineering. It is then said that the governor is more sensitive than the governor b. There is no piston rod,flywheel or slide valves attached to the turbine. Deliver much higher flow rates than positive displacement compressors. When the load on the engine increases, the engine and the governor speed decreases.
Hartnell governor watt governor it is the simplest form of a centrifugal governor, which is known as watt governor. Controlling force is the inward radial force exerted on each ball of a centrifugal governor by the arms, spring, etc. Nptel provides elearning through online web and video courses in engineering, science and humanities streams. Difference between flywheel and governor difference between. Engine speed governors speed control governor speed. This results in the decrease of centrifugal force on the balls. In this type of governor, the action of governor depends upon the centrifugal effects produced by the masses of two balls. Steam turbine governing and its mechanism ece tutorials. Lobanoff book aimed at the pump user, pump designer, rotatingequipment engineer, and student, this book bridges the gap between scholar texts and standard engineering design material. Introduction to fluid machines and compressible flow nptel.
The governor is a control component with advanced protections for the turbine. In 20, 35 million vehicles licensed for use in great britain alone in 2012, total co 2 emissions from cars in uk was 63 million tonnes improvements to turbochargers leads to more fuel efficient cars. Lecture 2 two stroke and four stroke engines, working principles, applications types, power and efficiency heat engine is a machine for converting heat, developed by. Please see all the questions attached with the last module. Calculating centrifugal force mechanical engineering. What is the difference between a flywheel and a governor. The governor can be classified into the following types. People with either electrical or mechanical backgrounds. Understanding nitrogen related risks in industrial process heating is crucial to avoid accidents and failures.
It is the original form of the governor used by watt on early steam. A speed governor is a device which senses speed deviation from its. It is fitted with a bit, either a drill or driver, depending on the application. Created by the best teachers and used by over 51,00,000 students. The experiments shall be performed on following centrifugal type governors. Reaction turbine 2 iii steam turbine operating range 2 3. Amitabha ghosh department of mechanical engineering iit kanpur for more details on nptel visit. In general, the greater the lift of the sleeve corresponding to a given fractional. May 12, 2020 chapter 6 governor theory of machine, mechanical engineering mechanical engineering notes edurev is made by best teachers of mechanical engineering. Therefore the governor mechanically regulates through linkages, the energy provided to the engines as demanded by variation of load, so the engine speed is maintained nearly constant. Download centrifugal pumps design and application by.
At any equilibrium speed the controlling force is equal and opposite to the centrifugal force. Nptel mechanical engineering video lecture online study. Classification of governors and concept of centrifugal governors. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Introduction to fluid machines and compressible flow. Centrifugal compressor the velocity centrifugal compressors accelerates of the gases increases kinetic energy which is then converted into pressure as the air flow leaves the volute and enters the discharge pipe.
It consists of a rotor and a set of rotating blades which are attached to a shaft and the shaft is placed in. Porter governor construction, working, equation of height. Free download engineering ebooks pdf ppt lecture notes. Classification of governors and concept of centrifugal governors theory of machine duration.
Steam turbine working principle and types of steam turbine. The variation in load during the operation of a steam turbine can have a significant impact on its performance. Classification of governors and concept of centrifugal governors video lecture. Kinematics of machines nptel online videos, courses.
The mission of nptel is to enhance the quality of engineering education in the country by providing free online courseware. A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine a classic example is the centrifugal governor, also known as the watt or flyball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow. A hand power drill is a tool primarily used for making round holes or driving fasteners. The steam turbine is one kind of heat engine machine in which steams heat energy is converted to mechanical work. A governor, on the contrary, is like a speedcontroller device used to regulate the speed of a machine and is mostly used in vehicles, turbine shafts, centrifugal governor, etc. Flywheels and governors study notes for mechanical engineering. Chakraborty, department of mechanical engineering, iit kharagpur. Centrifugal governors watt and porter governors,spring loaded governors. When a heavy central load is attached to the sleeve of watt governor, it becomes a porter governor. Mechanical engineering interview questions answers pdf. It is similar to watt governor with slight modification.
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