This is compared with a reference speed, governor whose main activity is to control the speed of the steam by closing and opening of the control valve ie if the differential speed is low,then the control valve is opened to let out the steam at high. Mechanical engineering ebooks download mechanical engineering notes. Valentini gas turbine power plants 1 introduction i have written these notes for italian speaking students in the last year of high school for the course of applied mechanics and fluid machinery. The motive power in a steam turbine is obtained by the rate of change in momentum of a high velocity jet of steam impinging on a curved blade which is free to. Steam turbine working principle and types of steam turbine. This is a typical layout of a steam turbine plant which you studied perhaps in the first level course on thermodynamic. In the last discussion lecture we talked about compressible flows. Advantages and disadvantages of a thermal power plant advantages. Power plant engineering notes pdf ppe notes pdf book starts with the topics introduction, boiler, classification of boilers, fire tube boiler, water tube boilers, introduction, classification of a steam turbine, simple impulse turbines. Alwash lecture notes university of babylon electrical machines mechanical department d. Chaplin encyclopedia of life support systems eolss both of these have double casings with the exhaust steam circulating in the annular space between the casings as in the case of the high pressure turbine. Steam turbine types steam turbine types based on blade geometry and energy conversion process are.
Development of gas turbine types of gas turbines gas turbine cycle gas turbine combustor new gas turbine combustors for clean environment. Steam lines evaporation powerpoint format, steam turbine, steam boiler. Purpose this manual can be used for preliminary selection, steam and cooling water planning for steam turbines in basic and detail engineering stages. May 19, 2015 mar 24, 2020 steam turbine notes, mechanical engineering, semester notes edurev is made by best teachers of. Lecture 2 steam turbine free download as powerpoint presentation.
Ppt steam turbines powerpoint presentation free to. Impulse and reaction principles, compounding, velocity diagrams for simple and multistage turbines, speed regulationsgovernors and nozzle governors. Feb 26, 2017 lecture series on steam and gas power systems by prof. Pdf power plant lecture notes chapter3 steam generator. Pdf power plant lecture notes chapter2 steam power plant.
Reaction turbine blading and conditions figure 3 shows, at the top. Impulse turbines an impulse turbine uses the impact force of the steam jet on the blades to turn the shaft. Chapter 4 steam turbine classification of steam turbines. Compilation of lecture notes on steam turbines for engineering students. So now we will see what happens in steam and gas turbines, what are the. In case of turbines with cooling water preheating and lowpressure lp bypass, prior to supplying steam the regeneration and dumping systems have to be. Note that the velocity triangles are drawn for the inlet and outlet of the rotor at. Chaplin encyclopedia of life support systems eolss accommodated and this requires special nozzles and reinforcing of the casing in these areas. 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. This manual does not for designing steam turbine and the related parts. Therefore, the highpressure air leaving the compressor can be heated by the hot exhaust gases in a counterflow heat exchanger a regenerator or a recuperator. Steam turbine is a type of turbomachine which is an assembly of nozzles and blades.
Ger4190 steam turbine thermal evaluation and assessment. Turbine type of energy head discharge direction of. The incoming steam is at a temperature higher than that generally prevailing in. Steam expands as it passes through the nozzles, where its pressure drops and its. Rocket turbine design emphasizes power density, because of the overriding concern for mass saving.
A highvelocity steam is coming from the nozzles and it strikes the rotating blades which are fitted on a disc mounted on a shaft. Steam turbine notes, mechanical engineering, semester notes. Engine general working principle mit opencourseware. Process 23the turbine cannot handle steam with a high moisture content because of the impingement of liquid droplets on the tu rbine blades causing erosion and wear. Steam consumption of steam turbine is depending to required output power and efficiency of the turbine. A typical turbine governing system has two unloaders one activated by low condenservacuum. For impulse turbine the blade height at a particular section of a turbine will be function of mass flow rate m, specific volume v, area a, and velocity of steam. Pdf lecture 27 model steam turbine gov system abdul hadi. Efficiency will depend on turbine size or rotor diameter, blade geometries, speed, extreme condition of steam and other losses.
Latest technologies and future prospects for a new steam. Apr 03, 2020 steam turbine lecture notes, mechanical engineering, semester mechanical engineering notes edurev is made by best teachers of mechanical engineering. Steam turbine a steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into useful mechanical work. Pdf lecture 27 model steam turbine gov system abdul. Chaplin encyclopedia of life support systems eolss in distinguishing between impulse and reaction blading it is necessary to consider what happens to the steam in passing through one stage of fixed and moving blades. Feb 19, 2017 lecture series on steam and gas power systems by prof. This paper introduces the latest steam turbine technologies applied to this stateoftheart steam turbine including the complete. Prior to supplying steam to the turbine, the steam supply pipelines have to be drained and heated up. The steam expands in the turbine, and this expansion work drives the turbine and generator to produce electricity. Anna university regulation 20 eee me6701 ppe notes, power plant engineering lecture handwritten notes for all 5 units with download link for eee 5th sem me6701 power plant engineering lecture handwritten notes are listed down for students to make perfect utilization and score maximum marks with our study materials. Chaplin encyclopedia of life support systems eolss figure 4. Beyond the turbine end of the gas generator is a freely rotating turbine. Latest technologies and future prospects for a new steam turbine. Impulse turbines, reaction turbines, the impulse principle, the.
Pdf power plant lecture notes chapter4 steam turbine. Turbine is a general term for any device that extracts mechanical energy from a fluid generally converting it to rotating energy of a turbine wheel. Only slight change in water temp through pump the steam generator consists of boiler twophase heat transfer and superheater turbine outlet is highquality steam condenser is cooled by water eg. Power plant lecture notes chapter2 steam power plant cycles. Good morning, i welcome you all for the last topic of the course on fluid dynamics and turbo machines, that is steam and gas turbines. Three basic phases can be distinguished in the process of steam turbine unit start. Thermal stations can be private industrial plants and central station. I have attached pdf on fundamentals of steam turbine. Steam turbines, turbine blades, velocity diagrams, impulse, reaction. If you are looking this types pdf you can download it for your course. The hydraulic turbines can be classified based on type of energy at the inlet, direction of flow through the vanes, head available at the inlet, discharge through the vanes and specific speed. Pdf steam turbine find, read and cite all the research you need on researchgate. This document is highly rated by students and has been viewed 568 times.
Good morning, i welcome you all for the last topic of the course on fluid dynamics and turbo machines, that is steam and. Steam turbine notes, mechanical engineering, semester. Steam turbine lecture notes, mechanical engineering. Reaction turbines steam condenser and circulating water systems.
Approval issue module 2347 the turbine governing system. This highvelocity steam produces dynamic pressure on the blades in which blades and shaft both start to rotate in the same direction. Unit iii unit iii steam nozzles and turbines flow of steam through nozzles, shapes of nozzles, effect of friction, critical pressure ratio,supersaturated flow. Theacti vatedunloader acts similarly to the loadlimiter, ie. The principles of correct conducting startups have been developed over the longterm operation of steam turbines and contain experience of turbine designers, constructors and operators. In an extracting type turbine, steam is released from variousin an extracting type turbine, steam is released from various stages of the turbine, and used for industrial process needs or sentstages of the turbine, and used for industrial process needs or sent to boiler feed water heater to. This document is highly rated by mechanical engineering students and has been viewed 866 times. The runner note that the terms stator and rotor are usually used for the fixed. Unesco eolss sample chapters thermal power plants vol.
Mar 24, 2020 steam turbine notes, mechanical engineering, semester notes edurev is made by best teachers of. Unesco eolss sample chapters thermal power plants steam turbine components and systems r. Introduction to turbine machinery univerza v ljubljani. Power plant engineering notes pdf ppe notes pdf notes. Engineering ebooks download engineering lecture notes. E book for steam turbine fundamentals of steam turbine. Lecture series on steam and gas power systems by prof. Alternatively the exhaust steam may be used for process purposes. Steam turbine convert a part of the energy of the steam evidenced by high. Pdf power plant lecture notes chapter2 steam power. Despite efforts to develop alternative energy converters, electricity from steam will continue, for many years, to provide the power that energizes the united states and world economies. Powerpoint presentation on steam turbine powerpoint.
Pdf power plant lecture notes chapter3 steam powerpoint format. The curtis stage turbine, as it came to be called, is composed of one stage of nozzles as the singlestage turbine, followed. The steam for process purposes is extracted from a certain section of turbine and the remaining steam is allowed to expand in the turbine. Turbine type of energy head discharge direction of flow specific name type speed pelton. Working principle of steam turbine depends on the dynamic action of steam. The main aim is to give them the chance to follow one module of their mechanics course all in english. Me6701 ppe notes, power plant engineering lecture handwritten. Efficiency, while clearly a consideration, takes a less prominent role than in aircraft turbine design.