The mission of nptel is to enhance the quality of engineering education in the country by providing free online courseware. Governor is a heart component of the turbine which controls it during steady state and transient conditions. 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. Introduction,types,classification of governor,centrifugal governor, types of governors, governor types,centrifugal governor,inertia governor,explanation of governors,governor lecture. Engine governors theory of machines engineering reference. Centrifugal pumps designs and application by robert r. This machine is a centrifugal propulsion machine, which uses simple mechanical motion to generate centrifugal force meant to propel the machine. Porter governor construction, working, equation of height. 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.
Free download engineering ebooks pdf ppt lecture notes. Introduction to fluid machines and compressible flow nptel. F t, f c forces are defined based on actual machining conditions. Asok kumar mallik department of mechanical engineering iit kanpur. Amitabha ghosh department of mechanical engineering iit kanpur for more details on nptel visit. 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 is achieved in older units using mechanical and hydraulic arrangements mechanical. It consists of a rotor and a set of rotating blades which are attached to a shaft and the shaft is placed in. Please see all the questions attached with the last module. The governor can be classified into the following types. 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 theory of machine duration. Download centrifugal pumps design and application by.
Classification of governors and concept of centrifugal governors video lecture. This outward movement pulls the lever arm down, which raises its other end. Design of machine elements lecture series on design of machine elements i by prof. Deliver much higher flow rates than positive displacement compressors.
Kinematics of machines nptel online videos, courses. 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. Department of mechanical engineering don bosco college of engineering and technology, adbu 1friday, january. Steam turbine governing and its mechanism ece tutorials. 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. The governor does this function by controlling the steam flow through the turbine by adjusting the control value. Hartnell governor watt governor it is the simplest form of a centrifugal governor, which is known as watt governor. Steam turbine working principle and types of steam turbine. 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. Nptel mechanical engineering fluid mechanics video introduction and. 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. Nptel mechanical engineering video lecture online study. The experiments shall be performed on following centrifugal type governors.
A speed governor is a device which senses speed deviation from its. This document is highly rated by mechanical engineering students and has been viewed 2914 times. This is a questionnaire with answers that covers all the modules and could be attempted after listening the full course. Mechanical engineering video lectures from nptel, iit, mit. Centrifugal governors watt and porter governors,spring loaded governors. 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. The governor is a control component with advanced protections for the turbine. It is similar to watt governor with slight modification.
Controlling force is the inward radial force exerted on each ball of a centrifugal governor by the arms, spring, etc. This single invention has changed all our lives for the better in many ways, from transport to manufacturing. In this type of governor, the action of governor depends upon the centrifugal effects produced by the masses of two balls. 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. Nptel provides elearning through online web and video courses various streams. It is the original form of the governor used by watt on early steam.
Difference between flywheel and governor difference between. It consists of a a centrifuge arm, a thrusting arm, and a. There is no piston rod,flywheel or slide valves attached to the turbine. Chakraborty, department of mechanical engineering, iit kharagpur. Mechanical engineering interview questions answers pdf. This results in the decrease of centrifugal force on the balls. Porter governor is dead weight loaded type of gravity controlled centrifugal governor. 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. Notes on flywheels and governors for mechanical engineering gate, psu and ese exams. Classification of governors and concept of centrifugal governors.
Design of machine elements nptel online videos, courses. It is then said that the governor is more sensitive than the governor b. The steam turbine is one kind of heat engine machine in which steams heat energy is converted to mechanical work. People with either electrical or mechanical backgrounds. 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. Engine speed governors speed control governor speed. At any equilibrium speed the controlling force is equal and opposite to the centrifugal force. Created by the best teachers and used by over 51,00,000 students. A hand power drill is a tool primarily used for making round holes or driving fasteners.
The balls are operated by actual change of engine speed in case of centrifugal governor. Learn for free, pay a small fee for exam and get a certificate. Understanding nitrogen related risks in industrial process heating is crucial to avoid accidents and failures. Steam turbine 1 content chapter description page i purpose 2 ii steam turbine types 2 2. It is fitted with a bit, either a drill or driver, depending on the application. Reaction turbine 2 iii steam turbine operating range 2 3.
To find a simple analytical model for centrifugal compressors in turbochargers why. Me mechanical online portal for mechanical engineering. When the load on the engine increases, the engine and the governor speed decreases. 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. Nptel provides elearning through online web and video courses in engineering, science and humanities streams. Calculating centrifugal force mechanical engineering. When a heavy central load is attached to the sleeve of watt governor, it becomes a porter governor. All related mechanical engineering pdf files could be downloaded and viewed from following forum. Nptel, online courses and certification, learn for free.
Divided into three parts, this book lays emphasis on explaining the logic and physics. What is the difference between a flywheel and a governor. In a centrifugal pump the liquid enters the pump a. 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. 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%. 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. Flywheels and governors study notes for mechanical engineering.
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