Steam nozzles ppt Reaction or Impulse Reaction Turbine IMPULSE TURBINE: In impulse turbine the steam expands in the nozzles and its pressure does not alter as it moves over the moving blades. And dont forget to share Chapter 11 Nozzles, Fire Streams, and Foam. As the steam Steam boiler - Download as a PDF or view • Download as PPT, PDF The secondary air to create turbulence and supply oxygen for thorough combustion of coal is supplied through nozzles located directly above the Steam Nozzle - Download as a PDF or view online for free. calculate for a mass flow of 1 kg/s, and symmetrical blading: a- the blade inlet angle b- the driving force on the wheel. Share. The critical pressure ratio of a nozzle is the ratio of downstream to Lecture 11 : Steam Nozzles I: Mollier diagram, nozzle shape, Convergent-Divergent nozzles, area change and flow properties, Critical pressure. Pi 8. It defines stagnation properties as those obtained when flow velocity is brought to zero isentropically. Adjustable-gallonage: Allow the operator to select a desired flow. The document discusses steam turbines. The water flows downward through the annular can below the drum level Further steam passes through a small corrugated scrubber attached with BASIC PRINCIPLES OF STEAM TURBINE1. It summarizes thermal modeling and analysis that was conducted to compare Steam Nozzle. is that steam follows an isentropic law pvk= const. The main function of steam nozzle in steam Steam power plant - Download as a PDF or view online for free. These high velocity steam jets issued from nozzle are allowed to strike over the blades mounted on the rotor of steam turbine. Turbine is a flow device develops a variable pressure form inlet to outlet. Types and Shapes of nozzles, Flow of steam through nozzles, Critical pressure ratio, Variation of mass flow rate with pressure ratio. Announcements. Download ppt "Nozzles and Fire Streams" Similar presentations . 78. 4. 1 of 57. Turbine is an Engine that converts Energy of Fluid into Mechanical energy & The View Steam Nozzles PPTs online, safely and virus-free! Many are downloadable. What exactly is the turbine?. American Pressure Steam jet refrigeration system - Free download as Powerpoint Presentation (. Steam Turbine Nozzles. In general, a steam turbine, essentially, consists of the following two parts: 1. Download now 8. Physical Principles: Steam Turbines:. Steam ejectors use steam or gas instead of moving parts to compress a gas. Dead legs Dead Leg: “An area of entrapment in a vessel or piping run that could lead to contamination of the product Any branch of a line through which liquid does not flow during CIP or steam during SIP Includes ME3451-Thermal Engineering Department of Mechanical Engineering 2023-2024 SANCET 2 COURSE OUTCOMES (COs) CO 1 Apply thermodynamic concepts to different air standard cycles and solve problems. Thischange the directiuo of steam issuing from nozzles. ppsx, . Downloaded 3,060 times. Fire Apparatus How Steam Ejectors Work. Nozzles, fundamental components in fluid dynamics, play a pivotal role in controlling the flow of fluids, making them crucial in various applications. Expansion of steam makes the rotor to rotate and produces mechanical energy. The resulting centrifugal force causes the higher density water from a layer against the cylinder walls and the steam moves to the core of the cylinder and then upward. The Steam Turbine The more modern method of extracting mechanical energy from thermal energy is the steam turbine. 77. A flowing steam develops work transfer due to movement of steam from High inlet pressure (Live 14. The nozzle in which the heat energy of high pressure steam is converted into kinetic energy, so that the steam issues from the nozzle with Example 2 Calculating Exit Area of a Steam Nozzle Find: The exit area. Not much power can be Presentation on theme: "Nozzles, Fire Streams, and Foam"— Presentation transcript: 1 Nozzles, Fire Streams, and Foam but can change to steam Excellent tools for hydraulic ventilation Large quantities of smoke removed by MR. At the inlet of turbine, P. Nozzle governing opens and closes sets of nozzles to control steam flow. A . The outlet angle of the buckets should be the smallest possible. Steam Turbine Steam turbine convert a part of the energy of the steam evidenced by high temperature and pressure into mechanical power-in turn electrical power The steam from the boiler is expanded in a nozzle, resulting in the emission of a high velocity jet. It explains that steam turbines convert the high temperature if the fluid is steam, then the nozzle is called as Steam nozzle. The document discusses the properties of steam nozzles, including stagnation properties, mass flow rate, critical pressure ratio, and choked flow. The shape of the nozzle is designed such that it will perform this conversion of energy with minimum loss. Its major function is to produce steam jet with high velocity to drive steam turbines A diffuser is a device 3. Share yours for free! PowerPoint PPT presentation | free to view . TURBINE CASINGS The casing shape and construction details depend on whether it is a High Pressure(HP) or Low Pressure (LP) casings. 9 Each year, billions of cubic meters of flare gas is burned globally which generates a significant amount of greenhouse gases. Steam Turbine is device where Kinetic Energy (Heat) converted into Nozzles Give fire streams shape and direction Classified into groups: Low-volume Handline Master stream Shut-offs Quarter-turn valve Rotary control valve . txt) or read online for free. In other words, the steam is continually expanding as it flows over the blades. It also discusses the key parts like nozzles, blades, bearings, seals, monitoring systems, and control valves. de Laval developed a simple impulse turbine, using a convergent-divergent (supersonic) nozzle which ran the turbine to a maximum speed of 100,000 rpm. simple impulse turbine is not so common • since the whole pressure drop takes place in single row of nozzles , the velocity of the steam entering the turbine is very high. In figure illustrates an impulse, radial flow, auxiliary turbine such as may be used as a nozzle is used when the pressure ratio, — is less than 0. The design and The steam flows through the nozzle and impinges on the moving blades. The main components are a flash chamber, steam nozzles, ejector, and What is meant by super saturation in steam nozzles? Owing to the high velocity, the residence time of steam in the steam nozzle is small, and there may not be sufficient time for necessary heat transfer and the formation of liquid droplet. Boiler Capacity Boiler Horsepower - BHP The Boiler Horsepower (BHP) is the amount of energy required to produce 34. No source of power is required other 25. pptx files. These jets contain significant kinetic energy, which the rotor blades, shaped like buckets, convert into shaft rotation as the steam jet changes direction. Relevance To show learners the importance of using STEAM to make a good project. 60 terms. ppt, Subject Mechanical Engineering, from Vellore Institute of Technology, Length: 24 pages, Preview: Steam Nozzle Steam nozzle is an insulated passage of varying cross-sectional area through which heat energy (Enthalpy), pressure of Steam turbine nozzles are critical components in a steam turbine system that control the flow of steam from the boiler to the turbine blades, converting thermal energy into mechanical energy. Lecture 06: Steam Generators: Download Verified; 7: Lecture 07: Fire Tube Boilers: Download Verified; 8: Lecture 08: Water Tube Boilers: Download Verified; 9: Lecture 17: Nozzles and Diffusers - Momentum and Continuity Equations : Download Verified; 18: Lecture 18: Nozzles and Diffusers- Efficiency and Critical Pressure : Download steam nozzle - Free download as Powerpoint Presentation (. Steam turbines. Other Types of Nozzles Piercing nozzle Cellar nozzle Water curtain nozzle . A steam nozzle converts the heat energy of steam into kinetic energy by accelerating steam through a tapered duct. Rankine cycle, steam generators and their accessories, Performance of Boilers and combustion of fuel, high pressure boilers, flow through steam and gas nozzles, different type of steam turbines for power • A good approx. STEAM NOZZLE. 135 • Steam initially superheated, k = 1,3 Nozzles 1 1 1 2 kk c kp p When steam entering the nozzle is dry saturated: When steam entering the nozzle is dry saturated: 577. Steam turbines have been the norm in various land based power plants for many years. By-Pass Governing: Occasionally the turbine is overloaded for short durations. The steam at boiler pressure enters the first set of nozzles and expanded partially. The document discusses different types of steam nozzles and turbines. ♦ Steam Inlet ♦ Fixed Blades (Nozzle Diaphragm) ♦ Moving Blades (Rotor Blades) ♦ Rotor Rotation ♦ Steam Exit ♦ Steam Inlet: Pressurized steam enters the turbine through the inlet. 1 The velocity of steam leaving the nozzles of an impulse turbine is 900 m/s and the nozzle angle is 20 . 9. In a jet or ejector, a relatively high-pressure gas, like steam or air, expands through a nozzle. the nozzle ring. The design and characteristics of a nozzle influence the behavior of the fluid passing through it, and engineers carefully consider these factors to optimize performance. Steam Turbines A steam turbine is a prime mover in which rotary motion is obtained by the gradual change of momentum of the steam. Er Anmol Singh Mangat. • Steam Nozzle: It is a passage of deviate cross-section; which converts heat energy of steam into kinetic energy with a minimum Loss. 6491, s fg4 =7. Purpose of Steam Injectors: Steam Injectors are often used to heat water or other liquid media in the production cycle. 2825 categories Any pressure Example. In modern power plant, boilers produce steam at a high pressure and temperature. Idealized Steam Nozzles - Free download as Powerpoint Presentation (. 2-2 atm) Medium pressure ( upto 40 atm ) High pressure (above 40 atm ) 2. The document discusses nozzles and diffusers. 6. Large Steam - Title: Natural Cycle of Universe Author: P. pptx - Free download as Powerpoint Presentation (. This causes a change of momentum The document discusses the principles of impulse and reaction steam turbines. An efficient nozzle is designed to have higher velocity, greater mass flow and minimum inlet losses. The phenomenon of supersaturation in steam nozzles is also called as supersaturated flow or metastable flow in steam nozzle. Principles of operation •The 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 rotate. QA September 2001 Fire Topic. Lube oil system: Ensure proper oil levels and quality. Pressure Compounding: These are the rings of moving blades which are keyed on a same shaft in series, are separated by the rings of fixed nozzles. The steam is partially 3. Corner Tap : In this arrangement, openings for the pressure taps are located in the upstream and downstream flanges holding the Flow nozzle Flange Tap : This design places one pressure tap hole 1 inch upstream and the other 1 inch down-stream form the nozzle. View Steam Nozzles PPTs online, safely and virus-free! Many are downloadable. The high pressure steam impinges and expands across a number of sets of blades in the ESF Nozzle PPT questions. Handling such heavy casing is very difficult also the turbine as Steam Jet Ejector - Free download as Powerpoint Presentation (. It explains that impulse turbines use nozzles to convert steam pressure entirely into velocity before striking moving blades, while reaction turbines use both fixed and moving blades to gradually convert pressure to velocity. ppt / . The result is a small increase in velocity over that of the moving blades. M. 10. The nozzle design ensures constant steam pressure and velocity at the point where steam contacts the liquid or slurry, eliminating the potential for pressure upsets and ensuring smooth heater operation. 5 mm SU-46 Modified Full cone Wide angle (70 Deg) Air atomizing 46 This Course provides a simple understanding of the steam and gas power systems. Steam Turbine is device where Kinetic Energy (Heat) converted into Mechanical Energy (in shape of rotation). 2) Impulse and reaction turbines, how they work, Steam Nozzles - Free download as Powerpoint Presentation (. ♦ Fixed Blades (Nozzle Chapter 5 Nozzle - Free download as Powerpoint Presentation (. Maximum flow rate through the nozzle • Further reduction of the back pressure below the critical value dose not affect the mass flow which remains at its maximum value. Learn new and interesting things. Steam Turbine Compounding / Multi-staging Necessary to reduce rotational speed of turbines without sacrificing power developed or efficiency. 25 WATER AS STEAM VS 13-3 10 feet (3 m) 50 feet (15 m) 96 feet (29 m) • At 212ºF (100ºC) water expands to approximately 1,700 times its original volume. The force due to change of momentum causes the rotation of the turbine shaft. calculate for a mass flow of 1 kg/s, and . Principle of steam jet refrigeration system : – • PRINCIPLE - "The boiling point of a liquid changes with change in external pressure. x. Share yours for free! Toggle navigation. Variable steam adjustment. Basically,in a steam turbine pressure energy of UNIT II STEAM NOZZLES AND INJECTOR ME3451 Thermal Engineering Notes. Steam power plant • Download as PPTX, PDF • 149 likes • 31,801 views. Steam turbines use the steam as a working fluid. • Steam absorbs more heat faster, cooling fuel below ignition temperature. c- the axial thrust d- the diagram Internally modulated direct-contact steam heaters inject metered amounts of steam into the process fluid through a variable-area steam nozzle. There are two main types of nozzles: Steam nozzle - Free download as Powerpoint Presentation (. Ejector; it is a pumping device which extract the vapor from the flash chamber 4. Besides greenhouse gases, inefficient gas flaring can also produce toxic combustion by- products. The nozzle angle, or the angle of the steam nozzle with relation to the plane of the wheel, should be as small as possible. Steam nozzles convert the heat energy of steam into kinetic energy. The nozzle converges first to the smallest section and then diverges up to exit. The fluid acceleration comes on the account of a pressure drop along the nozzle. According to the action of steam: Impulse turbine: In impulse turbine, steam coming out through a fixed nozzle at a very high velocity strikes the blades fixed on the periphery of a rotor. 4, Sample Problem 2 Steam enters a nozzle operating at steady state at p1 = 140 lbf/in2 and T1 = 600oF with a velocity of 100 ft/s. The blade velocity is 300 m/s and the blade velocity coefficient is 0. The document provides lecture notes on steam nozzles and power plants. 2) Divergent nozzle :- It is a nozzle with small entrance and tapers gradually to a large section at exit. 4 Flow Through Steam Nozzles From the point of view of thermodynamics, the steam flow through nozzles may be spoken as adiabatic expansion. Lecture 12 : Steam Nozzles II: Nozzle shape, Convergent-Divergent nozzles, Mass flow rate and choking of nozzles, design pressure ratios for nozzle, Nozzle efficiency, Velocity coefficient, Discharge coefficient, steam nozzles, In the reaction turbine, the steam is expanded in fixed nozzles and also in the moving nozzles. Ejectors are considered an alternative to mechanical vacuum pumps for a number of reasons: 1. nozzle and diffuser - Free download as Powerpoint Presentation (. Sort by: Steam Turbine UNIT I : STEAM NOZZLE Steam Nozzles and Turbines Steam Nozzles Solved Problems: Steam Nozzles and Turbines UNIT II : BOILERS UNIT III : STEAM TURBINES Steam Turbines Solved Problems: Steam Nozzles and Turbines UNIT IV : COGENERATION AND RESIDUAL HEAT RECOVERY UNIT V : REFRIGERATION AND AIR CONDITIONING Refrigeration and Air Steam Traps . Please check back in a few minutes. Working Principle of Impulse Turbine • The steam is made to fall in its pressure by expanding in a nozzle. The steam glides over the moving vanes with pressure and kinetic energy. Impulse Turbine b. What is Steam Turbine? A Steam Turbine is a device that extracts Thermal Energy from pressurized Steam and uses it to do Mechanical Energy on a rotating output shaft. 2) Friction within the nozzle reheats the steam, reducing enthalpy drop and velocity while increasing dryness 2. Introduction • Fires usually extinguished by water • Foam added to improve water’s extinguishment ability • For fires where water ineffective • Water and foam delivered using nozzles and fire streams • Nozzle selection important • Each fire situation requires different appliance. if this velocity is utilized in single row of turbine blades , the speed of rotation of wheel will be too high to be useful for practical purposes, as there is the danger of structural failures due to excessive 2. - The two main types: impulse turbines which use nozzles to direct steam onto rotor blades, and reaction turbines which use fixed blades to expand steam before it hits moving blades. 17. Add to Cart Compare. The resulting impulse (as described by Newton's second law of motion) spins the turbine Steam Nozzle major function is to produce steam jet with high velocity to drive steam turbines. 7. Steam nozzle; in which steam is supplied by the boiler at higher pressure and temperature. Isentropic Efficiencies of Turbines, Compressors and Nozzles. 1) Not always practically 5. Unit III. thus generating steam. The steam may or may not be admitted over the whole 6. Effect of friction. The steam ejector utilizes high pressure steam to compress low pressure vapors or gases to create a vacuum. Students also viewed. The blades change the direction of steam flow without changing its pressure. A flowing steam develops work transfer due to movement of steam from High inlet pressure (Live Steam path components: Examine blades, nozzles, and diaphragms for damage. Flow of steam through nozzles: The flow of steam through nozzles may be regarded as adiabatic expansion. This is due to the time lag in the condensation of steam and the steam remains in dry state instead of wet. The steam possesses a very high velocity at the end of the expansion, and the enthalpy decreases as expansion occurs. This provides a correctly shaped introductory section and converging diffuser section to handle the high velocity flow of fluids. Power Output, economy is greatly dependent on the effectiveness of the fuel injection system. Combination governing uses two methods, typically bypass and nozzle. 5. UNIT-III Steam Turbines: Classification - Impulse turbine; Mechanical details - Velocity diagram - Effect of friction - Power developed, Axial thrust, Blade or diagram efficiency - Condition for maximum efficiency. The rapidly moving particles of the steam enter the rotating part of the turbine, where it undergoes a 6. Since the ejected vapour and motive steam condensed in the condenser, the magnitude of heat transfer is about 3 to 4 times that needed in the vapour compression system per tone per hour. Hence when the steam passes over the fixed blades, it expands 3. Radial Flow: A turbine may also be constructed so that the steam flow is in a radial direction, either toward or away from the axis. S Last modified by: hp Created Date Steam jet refrigeration system - Free download as Powerpoint Presentation (. High Pressure Steam expands through a governor valve and a nozzle. The moving blades have a converging steam nozzle. High pressure steam expands through the nozzle, entraining Flow of steam through nozzles, shapes of nozzles, effect of friction, critical pressure ratio,supersaturated flow. The force due to change of momentum causes the Flow Through Nozzles - Free download as PDF File (. The energy conversion is brought about in the following ways: 1. Hence pressure remain constant when the fluid pass over the rotor blades. 5 pounds of steam per hour at a pressure and temperature of 0 Psig and 212 oF, with feed The Blades whichand its direction of motion changed. The critical Unit 3 - Steam Nozzles - Free download as PDF File (. Latest seminar topic index - Report ,PPT Download Mechanical Subjectwise Basic Concept Notes ,Articles 13 nozzle: The crossectional area of the duct increases from inlet to the outlet then it is called as divergent nozzle. The steam is then piped to a turbine. Nozzles • Download as PPT, PDF Air/Steam atomizing 79 – gallon per hour (300 Kg/Hr) Hole size 3. Example. Impulse and reaction principles, compounding, velocity diagrams for simple and multistage turbines, speed regulations-governors and 4. ppt, . pps, . This document is currently being converted. Hence, there is a partial decrease in pressure of the incoming steam. Dry saturated steam at 15 bar enters a nozzle and This document discusses flow through nozzles used in steam turbines. The document provides an overview of steam turbines and key concepts: 1) It describes the major components of a thermal power plant including the boiler, turbine, and generator and how they work together • Download as PPTX, PDF Reaction steam turbine: A reaction turbine utilizes a jet of steam that flows from a nozzle on the rotor. 11. Features include soft flexible mask, extension tube, drain tank, convenient indicator light, aromatheraphy tank, This document provides information about a group presentation on the steady flow energy equation (SFEE). A steam nozzle is a duct or passage of smoothly varying cross sectional area which converts heat energy of steam into kinetic energy. Each stage of a compounded steam turbine has its own set of nozzles and rotors. ppt), PDF File (. The nozzles are of converging or diverging or converging-diverging type as per the design. Metastable flow. It describes: 1) Convergent, divergent, and convergent-divergent nozzles and their functions in steam turbines. 3(kJ/kg), s 3 =s g. • Working: During the first part of the nozzle, the steam increases its velocity. 117 terms. CLASSIFICATION OF STEAM TURBINE There are several ways in which the steam turbines may be classified According to the action of steam: a. Robotics Tooling and Grippers. Several flare designs have been developed to improve combustion efficiency including flares using assistant media such as air 4. When superheated steam flows through a nozzle and expands upto the back pressure such that exit state of steam lies in wet region, then during expansion steam vapours expand isentropically and slowly get condensed up to Steam Nozzles: Function of nozzle - Applications and Types- Flow through nozzles- Thermodynamic analysis. spraying water. A nozzle with a straight, smooth tip, designed to produce a A PPT using HTML 5 Steam Nozzles PPT. certain mathematical relation should exist between the nozzle angle, the velocity of the steam-jet, the peripheral velocity of the turbine wheel, and the inlet angle of the buckets. The steam impinges on the buckets with kinetic energy. This includes stagnation temperature, pressure, and enthalpy. The arrangement allows either the steam pressure or the jet velocity to be absorbed • Stage 2: The second stage is the thermodynamic process. 5019, h f4 =191. Steam jet ejectors Introduction:- Steam jetejectors offer a simple,reliable,low- cost way to produce vacuum. Stagnation properties refer to the temperature, pressure, and enthalpy that would result if a 18 Single Stage Impulse Turbine IMPLUSE STAGE It is usually called De-Laval turbine The steam is fed through one or several convergent-divergent nozzles The nozzles do not extend completely around the circumference of the rotor, so that only part of the blades are impinged upon by the steam. It uses steam ejectors instead of mechanical compressors to compress the refrigerant vapor. Straight Stream. Steam nozzles use the expansion of steam to convert pressure energy into kinetic energy via Document STEAM_NOZZLES_4. When dry and saturated steam is caused to expand in a nozzle, the actual measured steam flow is found to be greater than the theoretical calculated flow. A high-velocity steam is coming from the nozzles and it strikes the rotating blades which are fitted on a disc mounted on a shaft. V. Definition of Fire Stream • Fire Steam turbines may be of two kinds, namely (i) impulse turbine In Impulse turbine, the enthalpy drop (pressure drop) completely occurs in the nozzle itself and when the fluid pass over the moving blades it will not suffer pressure drop again. Download now. mayankmaroliya1 Follow. The steam jet refrigeration system uses water as a refrigerant. Due to this fall in pressure, a certain amount of heat energy is converted into kinetic energy, which sets the steam to flow with a greater velocity. Midterm-II: Friday, Nov. Ideal for aromatherapy. These are arranged in series, either keyed to the common shaft or fixed to the casing. Steam Nozzle Read less. Mixture passes through the Turbo separator. Impulse & Reaction turbines An impulse turbine has fixed nozzles that orient the steam flow into high speed jets. Nozzles are classified as: Convergent nozzles– can deliver steam at subsonic velocity Convergent-divergent nozzles – can deliver steam at supersonic velocity. P. This document discusses steam nozzles used in power plants. This time lag is caused due to the 10. The steam or air converts that pressure or potential energy to velocity or kinetic energy. From 3-4, isentropic expansion: s. Nozzle Governing: In nozzle governing the flow rate of steam is regulated by opening and shutting of sets of nozzles rather than regulating its pressure. In steam turbines, high pressure steam from the boiler is expanded in nozzle, in which the enthalpy of steam being converted into kinetic energy. Read more. (k is isentraopic index for steam; not ratio of sp. 25. The heat from combustion of the coal boils water in the boiler to produce steam. Steam Turbine Flow The Steam Turbine The more modern method of extracting mechanical energy from thermal energy is the steam turbine. The document discusses the properties of steam nozzles, including stagnation properties, Objectives: design an optimal vapor power cycle. These Steam Heaters usually work in closed circuits, in tanks or other pipelines. Smooth Bore Nozzle. The steam is partially expanded in the nozzle ring. Velocity and heat drop, Mass discharge through a nozzle, Critical pressure ratio and its significance, Effect of friction, Nozzle efficiency, 8. Steam Nozzles PowerPoint PPT Presentations. Steam nozzle is an insulated passage of varying cross-sectional area through which heat energy (Enthalpy), pressure of steam is converted into kinetic energy. Velocity compounding High velocity steam Pre commissioning steam turbines load trial - Download as a PDF or view online for free • Download as PPT, PDF Problems faced on site included low dump values due to nozzle chest welding issues and high CEP current due to pump-motor misalignment. =5. It describes the main types of steam turbines such as condensing, extraction, and reheat turbines. " • In normal conditions, pressure exerted on the surface of a liquid is the atmospheric pressure. It has no converging portion at entry. UNIT III STEAM NOZZLES AND TURBINES Flow of steam through nozzles, shapes of nozzles, effect of friction, critical pressure ratio,supersaturated flow and reaction principles, compounding, velocity diagrams for simple and multistage turbines, speed regulations-governors and nozzle governors. Steam Nozzle A steam nozzle may be defined as a passage of varying cross section, through which heat energy of steam is converted to kinetic energy. Being closely located to the face of the flange, they are accessible for inspection. For the steam turbine maintenance checklist, key steps to prevent breakdowns follow these steps. A nozzle is a duct by flowing through which the velocity of a fluid increases at the expense of pressure drop. shows the schematic diagram of Impulse turbine. pptm and . The steam first flows through the guide mechanism and then through the moving blades. NOZZLE BASICS REVIEW • Nozzle produces thrust • Convert thermal energy of hot chamber gases into kinetic energy and direct that energy along nozzle axis • Lec 28: Use of nozzles in steam power plant, flow analysis of steam in nozzle: PDF unavailable: 32: Lec 35: Steam Turbines: types and analysis using velocity triangles: PDF unavailable: 33: Lec 36: Analysis of Impulse Steam Turbine: PDF unavailable: About the course: This Course provides a simple understanding of the steam and gas power systems. This document discusses steam turbines and steam nozzles. The exit pressure remains at pc, and Step 2 High pressure steam to Velocity energy Step 3 Open ended pipe Step 4 Closed ended pipe - Side inlet Typical example of the final design of an SJT Steam Jet Thermocompressor: High pressure motive steam enters the SJT Steam Jet Thermocompressor and passes through the nozzle where the high pressure steam energy is converted into kinetic energy. consider all theoretical and practical limitations and redesign the cycle accordingly . Working principle of steam turbine depends on the dynamic action of steam. Based on method of governing Throttle governing Nozzle governing According to heat drop process Condensing turbines with generators Back pressure turbines Topping turbines Low pressure turbines Mixed pressure turbines According to steam conditions at inlet Low pressure (1. In impulse turbine pressure drop per stage is more than reaction turbine. Submit Search . Get ideas for your own presentations. The document discusses steam turbines, including: - Their basic principle of converting steam energy into rotational energy through fixed and moving blades in stages. Vortex Tube Refrigeration It consists of nozzle, diaphragm, valve, hot-air side, cold-air side. For low and moderate inlet steam pressure up to 120 bar, a single shell casing is used With a rise in inlet pressure the casing thickness as to be increasing. Soothing steady vapor. This jet of steam impinges on the moving vanes or blades, mounted on a shaft. From table A-5, when T=45. M. It can efficiently recover or repair the PowerPoint files objects which are using in creating a presentation files such as tables, columns, media files, images, photos, word art, banners, animations and 11. TFD 24-1 Ground Ladders. 4 = (s 4-s f4)/s fg4 . 3 =6MPa, 100% saturated vapor x 3 =1, from saturated table A-5, h 3 =h g =2784. Bypass governing introduces steam into later turbine stages during overloads. 8°C (why?). Automatic adjusting: Deliver a wide range of flows. Dont miss to check out the updates. GrateGrate: it is a platform in the furnace upon: it is a platform in the furnace upon which fuel is burntwhich fuel is burnt FurnaceFurnace: it is the chamber formed by the: it is the chamber formed by the space above the grate and below the boilerspace above the grate and below the boiler shell, in which combustion takes place. Dead legs Dead Leg: “An area of entrapment in a vessel or piping run that could lead to contamination of the product Any branch of a line through which liquid does not flow during CIP or steam during SIP Includes Tees Closed valve branches Vessel nozzles Target ratio: L/D ≤2 (extension from flow path / inner diameter) (BPE 2009, SD3. 8, h fg4. Many artists use specific STEAM concepts to create their work. pptx), PDF File (. The final velocity without friction losses is calculated. The maintenance of high vacuum in the evaporator is necessary for proper functioning of the system. It then describes the three main types of nozzles: convergent, divergent, and convergent-divergent. Chamber is a portion of nozzle that facilities the tangential entry of high velocity air Faculty of Mechanical Engineering SMEX1009-THERMAL ENGINEERING. Thus, velocity of steam is increased. The high-pressure, high-temperature steam first expands in the nozzles Steam Nozzles - Free download as Powerpoint Presentation (. During such operation, bypass valves are opened and fresh steam is introduced into the later stages of the The document discusses steam turbines, including their basic components and operating principles. The document discusses implementing a sustainable solution for frequent steam trap failure at a plant. Handling such heavy casing is very difficult also the turbine as 2. S Last modified by: hp Created Date 3. Thus, the steam at high velocity at the exit of nozzle impinges over the moving blades (rotor) which cause to change the flow direction of steam and thus cause a PowerPoint Recovery Software is an advance utility to recover PPT file and embedded with a strong algorithm to Repairs PowerPoint files such as . Show: Recommended. CLASSIFICATION OF STEAM TURBINES According to the action of steam: Impulse turbine: In impulse turbine, steam coming out through a fixed nozzle at a very high velocity strikes the blades fixed on the periphery of a rotor. Gurin Steam Inhaler - The Gurin steam inhaler provides a natural, safe and effective therapy to relieve symptoms due to: allergies, bronchitis, colds, flu, laryngitis, rhinitis, sinustis and more. The mixture of steam and water vapour passes through the venturi-tube of the ejector and gets compressed. Nozzles • A nozzle is a device used to accelerate a flowing fluid by varying the cross-sectional area in the direction of flow. pptx - Download as a PDF or view online for free. Dry saturated steam at 15 bar enters a nozzle and exits at 2 bar with a dryness fraction of 0. - The steamhas a very high velocity at the end of the expansion, and the enthalpy decreases as expansion takes place. Throttle governing reduces steam pressure through a restricted passage before entering the turbine. Disadvantages: Move large volumes of air, which can result in a sudden heat inversion that pushes hot steam and gases onto fire fighters If used incorrectly, can push fire into unaffected areas. The document discusses the properties of steam nozzles. 19. It consists of a steam chest, steam nozzle, air chamber, and diffuser. It contains the following key points: 1) A nozzle converts the potential energy of steam into kinetic energy by accelerating the steam through a 48 Impulse Turbine A turbine that is driven by high velocity jets of water or steam from a nozzle directed on to vanes or buckets attached to a wheel. Fig. It defines steady and unsteady flow, derives the SFEE, and discusses its applications to nozzles, diffusers, steam turbines, throttling valves, heat exchangers, and systems with multiple outlets. Downloaded 3,727 times. The kinetic energy of the steam thus obtained is absorbed by moving blades. It summarizes that currently many of the plant's steam traps are unhealthy. With 10% friction losses, the reduction in final velocity is determined. 3. 1) Nozzles convert high pressure, low speed steam flow to low pressure, high speed flow through adiabatic expansion. Read less. 89 (kJ/kg K). use idealized Carnot cycle as the model . heats) • Steam initially dry saturation, k = 1. The te rature e high pressure steam from the boiler is pas the steam nozzles reby ou increasing its velocity. The higher steam pressure is expanded in the nozzle which convert the thermal energy of the steam into kinetic energy of the steam 3. Solution. Formulas are provided for calculating steam velocity through a nozzle and the discharge rate. Not suitable for water temperature below 4ºC. The Fuel/Steam mix exits the nozzle in a series of conic tangents, fuel reversals inside the fuel cone allow efficient mixing with air over a wide 'Turn-Down ratio (20:1). 8. Quick view. •The steam from the boiler is expanded in a nozzle, resulting in the emission of a high velocity jet. 76 Fog Stream Nozzles (4 of 4) Types of fog Download ppt "Fire Hose, Nozzles, Streams, and Foam" Similar presentations 9. Nimesh Gajjar. 13 Example 2 continued From Table A-4, h1=3213. f4 =0. Rankine cycle, steam generators and their accessories, Performance of Boilers and combustion of fuel, high pressure boilers, flow through steam and gas nozzles, different type of steam turbines for power generation and condensers. 3, 08. Steam Nozzle. titanslg0722. It allows steam to efficiently drive steam turbines. J. 4 =T 1. All Time. It is done by the fixed blades which act as nozzles. S. ARCS Project-Based STEAM Learning Planning Sheet Objective Example Attention To focus learner’s attention to making a STEAM project. Lubrication maintenance: Proper lubrication is essential to ensure the longevity of a steam turbine. Submit Search. Using specific STEAM concepts is a good way to gain skills you will Steam nozzles are great for removing moisture as well as oil from steel surfaces. The Blades which change the directiuo of steam issuing from nozzles. • The steam from the boiler is expanded in a nozzle, resulting in the emission of a high velocity jet. 1 of 74. • In case of carburetion, fuel is atomized by processes relying on the air speed greater than fuel speed at the fuel nozzle whereas in Fuel-injection the fuel speed at the point of delivery is greater than the 14. Preview. The inlet narrows to form a throat, which is followed by an enlarging form so that atmospheric pressure is reached by adiabatic expansion, producing a flat jet $38. PATIL Steam Nozzles and Turbines Steam Nozzle: A steam nozzle is a passage of varying cross-sectional area in which heat energy of the steam is converted into kinetic energy. Move large volumes of air, which can result in a sudden heat View Steam Nozzles PPTs online, safely and virus-free! Many are downloadable. Nozzles - Download as a PDF or view online for free. txt) or view presentation slides online. 0 Fog Stream Nozzles (4 of 4) Types of fog stream nozzles: Fixed-gallonage: Deliver a preset flow in gpm at the rated discharge pressure. 8°C, s. The steam coming from the boiler is fed to the first set of fixed blades i. These nozzles are designed to expand the steam, increasing its velocity as it passes through, which is essential for driving the turbine blades and generating power. =2392. It covers the classification and construction of steam turbines, as well as the components and working of steam nozzles. 96. 6 kJ/kg Microsoft PowerPoint - ME 200 Lecture 17-18 Spring 2016_ Illustrations_1. shell, in which combustion takes place. 7 th , 11 am, in class 10 problems from Chapters 4,5,6 4 from Ch. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright It is done by the fixed blades which act as nozzles. CO 2 To solve problems in steam nozzle and calculate critical pressure ratio. It defines a nozzle as a device that increases 3. UNIT III STEAM AND GAS TURBINES ME3451 Thermal Engineering Important Questions Steam turbine - Machine components - Download as a PDF or view online for free Carl G. ppt [兼容模式] Author: 6. Pressure drop occurs in the nozzle and not in the blades. During the flow of steam through the nozzle, heat is neither supplied nor rejected. r28ngzx6pd. 2. 58 (critical). It uses steam 4. This leads to high operational costs in steam/energy bills and 16. Such a steam is called supersaturated steam. 1. The flow of steam through nozzles may be taken as adiabatic expansion. 7. Assumptions: » steady state ». They are especiallyeffectivein the chemicalindustry where an on-site supply of the high-pressure motivegas is available. Lecture # 28 Nov. 89(kJ/kg K). It discusses: 1) The basic components and energy conversion process in thermal power plants, The document discusses different types of nozzles used in steam turbines, including convergent, divergent, and convergent-divergent nozzles. e. A Steam Turbine is a device that extracts Thermal Energy from pressurized Steam and uses it to do Mechanical Energy on a rotating output shaft. The steam expands equally in all rows of fixed blade. 95. Compounding is to be done for impulse turbines to increase their efficiency while no compounding is necessary in reaction turbine. And then the later part of the nozzle, in which the steam derives more in volume than in velocity. Author & Editor. =45. In 1897 he constructed a velocity-compounded impulse turbine (a two-row axial nobine with a row of In impulse turbine velocity (or kinetic energy) of steam increases in nozzle while this work is to be done by fixed blades in the reaction turbine. Marine Boilers and steam engineering . Friction exists between the steam and the sides of the nozzle; heat is While passing through the nozzle, pressure energy of steam is converted in to kinetic energy. • If this atmospheric pressure is reduced on the surface of a liquid, by some means, then the liquid will start boiling at lower temperature, 16. = 3. 3 =s 4. Nishkam Dhiman Follow. Semi-solid stream that is produced by a fog nozzle. There is pressure and velocity loss in the moving blades. Hey, I author of the blog thank you for reading my blog and making it popular, its your contribution that this blog is being visited by a number of people from all around the world. It begins with an introduction to nozzles and their applications, including producing steam jets to drive turbines. Steam Nozzles - Free download as Powerpoint Presentation (. Steam power plant, thermal power plant, coal handling plant, Ash handling plant, Feeders, Stokers, burners Read less. The steam turbine is steam driven rotary engine. ppt - Free download as Powerpoint Presentation (. The course contains the analysis of vapour power cycle i. P. »ΔPE = 0? 1. This high-velocity steam produces dynamic pressure on the blades in which blades and shaft both start to rotate in the same direction. Heating processes can find place in only one step or in closed circuits with a defined Start- and Final Temperature. PowerPoint PPT presentation | free to view . 3) convergent - divergent nozzle :- convergent - divergent nozzle is widely used in steam turbines. DISADVANTAGES 1. • Nozzles The first stage is accomplished with the devices called steam nozzles. 1 of 47. Jun 24, 2022 • 0 likes • 22 views. pdf), Text File (. CO 3 Explain the flow in steam turbines, draw velocity diagrams, flow in Gas In steam turbine design, compounding is a method of extracting steam energy in multiple stages rather than a single one. Principles of operation • The 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 rotate. This high velocity steam in the ejector would entrain the water vapours from cooling the rest of water. From 4-1, isothermal process, T. Steam Nozzle_unit 2 (1) - Free download as Powerpoint Presentation (. Introduction to Fuel Injection System • Engine Performance i. Help; Preferences; Sign up; Log in; Advanced. Fired pressure vessels It is a PV which is completely or partially exposed to fire( Burners or combustion gases) Boiler: Generating steam Thermal oil heater Un-fired pressure vessels As per I. This is the heart of an ejector since it converts the energy of pressure to velocity and directs the flow of motive steam into the diffuser. INLET DIFFUSER. Actually, the steam is directed into the moving blades by fixed blades designed to expand the steam. Turbine is an engine that converts energy of fluid into mechanical energy. jdb rpwd dghldf nrak fizcf kyrgzfw kfhkqy uuejgvb ejbzd itdfayq