Be familiar with the main steam cycle in conventional and nuclear plants. Propulsion architecture is based on the power required, the duty cycle, environmental concerns and many other factors. Its modern manifestation was invented by sir charles parsons in 1884. Steam turbine coastal liners of the west coast san. The results of previous identification and quality assessment of waste heat energy sources of a cst conventional steam turbine plant are presente. This article focuses on marine steam turbines and their applications. A marine lng engine is a dual fuel engine that uses natural gas and bunker fuel to convert chemical energy in to mechanical energy. Advances in steam turbines for marine propulsion journal. Model steam turbines steam turbines have come very much to the fore during recent years, especially for marine propulsion. When it comes to making changes to individual components or tools, the cad data can be swiftly updated and used as a reference for incoming parts inspection. Steam turbines were fueled by coal or, later, fuel oil or nuclear power. Furthermore a turbine can be provided for any power rating likely to be required for marine propulsion. Us3033002a marine propulsion steam turbine installations.
The superheated steam enters the high pressure hp stage the astern turbine is on the same shaft and. Marine turbine engines how does a steam turbine work on ships. Another attractive alternative is combined gas and steam turbine cogas drive. Hp turbine 6681rpm at 95 propeller rpm lp turbine 3444rpm at 95 propeller rpm astern power 11,800 hp. This system consists of high pressure boilers which produce steam used to power steam turbines. Marine power and propulsion mechanical engineering mit. Aug 01, 2012 hindi steam turbine types of steam turbine which type of steam turbine used in power plants.
For more than 40 years, aeroderivative gas turbines have played a crucial role in propelling vessels. Elements of gas turbine propulsion engineering books library. The steam turbine is a device for obtaining mechanical work from the energy stored in steam. Marine propulsion is the mechanism or system used to generate thrust to move a ship or boat across water. Advances in steam turbines for marine propulsion somes, a. With the latest reheatregenerative cycle systems and stateofthe art technologies to improve plant efficiency, our ultra steam turbine plant ust delivers the best economic and environmental performance to all customers. In recent years combined systems consisting of a gas turbine and a steam turbine have started to be used as marine propulsion systems. Merchant marine exam third assistant engineer illustrations. A steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion. Steam turbines books related to steam turbine auxiliaries, design and operation and maintenance for power plant professionals. This site is like a library, use search box in the widget to get ebook that you want. Steam turbine diagram steam turbine generator steam turbine parts and functions pdf steam turbine parts pdf steam turbine pdf download. Comparing combined gas tubrinesteam turbine and marine.
Steam turbine propulsion was the norm for nearly 40 years propulsion system capable of burning gas higher consumption fed by higher boiloff rates bor tri fuel diesel electric propulsion. This was mainly because of the great difference in fuel consumption, even modern oilfired steam boilers consumption was up to 30% more than that of todays big diesels. Gas turbine, an internal combustion engine ice, working in a brayton cycle, derived from aviation turbines, able to burn marine diesel, kerosene, or jet fuel, are used in some fast ships e. A detail analysis of main propulsion steam turbine from the marine steam power plant at several loads is hard to find in the scientific and professional literature. Apr 28, 2015 the subject of this paper is the thermodynamic design of a 25,000 shp combined steam and gas turbine cogas powerplant for marine propulsion. Steam turbine propulsion steam turbine propulsion involves the usage of coal or other steam generating fuels to propel the vessel. Understand the main types of marine propulsion systems. The steam turbine has until recently been the first choice for very large power marine propulsion units.
Below are a few of the most popular cycles used for ship propulsion employing ge marine gas turbines. Steam merchant ships are still sailing and steam still powers nearly all electrical generation plants in the us. Development of high efficiency marine propulsion plant. Refrigeration and air conditioning technology 7th edition pdf november 24, 2018 27,321. While there have been described what are at present considered to be the preferred embodiments of this wind turbine for marine propulsion, it will be obvious to those skilled in the art that various changes and modifications may be made therein without departing from the invention, and it is aimed therefore, in the appended claims to cover all. Now its time to look into the basic steam cycle as it developed in ships using high pressure and low pressure steam turbines. Click download or read online button to get marine propulsion simulation book now. Application of steam jet injector for latent heat recovery of. Pdf exergy analysis of the main propulsion steam turbine. Marine propulsion simulation download ebook pdf, epub. There are two main types of turbine, the impulse and the. Turbine a steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Principle of working in this type of turbine, the high pressure steam does not initially expand in the nozzle as in the case of impulse turbine, but instead directly passes onto the moving blades.
Dec 20, 2011 the power turbine drives a generator via a reduction gearbox that produces electrical energy at 50 or 60 hz. The plant includes a highpressure ratio, aircrafttype gas turbine which exhausts into an unfired, lowpressure wasteheat boiler. The pursuit marine drive is a marine propulsion unit that utilises steam energy in a novel manner. Due to natural gas cleaner burning properties, the use of natural gas in merchant ship propulsion plants is becoming an option for companies in order to comply with imo and marpol environmental regulations. The major focus is steam turbine propulsion, which may be outdated, but is still important to understand. Furthermore a turbine can be provided for any power rating likely to be required for marine. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or engine turning a propeller, or less frequently, in pumpjets, an impeller.
Parsons main thrust for the steam turbine was for generating electrical power, but he also had his eyes on applying the steam turbine to drive ships of all kinds. They are an ideal power source for marine applications, being smaller and lighter than a steam turbine or diesel engine, with an excellent power to weight ratio. Advances in steam turbines for marine propulsion journal of. Enter your mobile number or email address below and well send you a link to download the free kindle app. The first generation of lng ships built in the 1960s employed steam turbine plants and, in doing so, established the technical concept for burning boiloff gas in boilers, which is still applied today. Some ships have separate machinery spaces for steam generation and turbine operations, while others combine all main propulsion machinery in one machinery space. Marine engineering is the discipline concerned with the. Application of steam jet injector for latent heat recovery.
Jan 18, 2018 general overview of late design 1976 general electric steam propulsion turbines 30,000 hp. Marine engineering may have changed greatly in 30 years especially in the navy but this is a must read for marine engineering. The main switchboard supplies all electric consumers, including 4 mwe propulsion power to the propeller and 2 mwe bowthruster load. Mediumspeed dieselelectric and slowspeed dieselmechanical drive ships are in service, and more are being built. Algebra and its applications losses in steam turbine pdf low voltage transformer m code machine design map construction marine. During the past 10 years there have been many changes in the conception and detail design of marine turbine propulsion gearing. Propulsion systems ge provides advanced gas turbine cycles for ship propulsion. In the second part of this series, the author talked about the story of the first little toy turbine. Technical innovation allows diesel generators to burn gas. Ppt steam turbines powerpoint presentation free to. Jun 24, 2015 in the second part of this series, the author talked about the story of the first little toy turbine. Marine turbine engines have mostly been replaced by large two stroke diesel engines as a means of ships propulsion. The steam plant model is based on an actual lng tanker.
The dfde propulsion system uses either oil or gas, depending on the situation. The name of motor ships are often prefixed with ms. Principles of naval engineering download free epub, pdf. Describe the principle of operation and major components of a steam propulsion plant. This paper presents the results of previously carried out analyses regarding efficiency and criteria evaluation of various propulsion plants of modern lng liquid natural gas carriers. Marine steam turbines as a m ain engine can be classified in two groups. Furthermore, a turbine can be provided for any power rating likely to be required for marine propulsion. Marine turbine engines how does a steam turbine work on. It uses an electric motor like large cruise ships and submarines, not a steam turbine, which is the traditional. Abstract the gas turbines areknown to have good efficiency when used in combined cycle.
The precise 3d point clouds of atos help gas and steam turbine operators create golden masters from thirdparty or selfmanufactured turbine blades based on a comparison of different 3d. Authority us united states prior art keywords turbine pressure high speed steam prior art date 19571108 legal status the legal status is an assumption and is not a legal conclusion. Rwg services for the marine propulsion industry rwg. The traditional steam plant is losing favor because of its low cycle efficiency. Application of steam jet injector for latent heat recovery of marine steam turbine propulsion plant. Combined gas turbine and steam turbine integrated electric drive system coges in a coges system gensets are driven by gas and steam turbines. Pressurevelocity changes over impulse steam turbine reaction steam turbine. Combined gas turbine and steam turbine integrated electric.
Steam enters the turbine with high energy content and leaves after giving up most of it. Steam propulsion conventional steam ship platforms are each configured in their own unique way to support the mission of the ship. Steam for the steam turbine generator will be raised by firing the boiler on either bog or. Fossil fuel steam plants widely used in surface combatants until the late 60s, when they began to be replaced by gas turbines nuclear fuel steam plants currently used by. Its advantages of little or no vibration, low weight, minimal space requirements and low maintenance costs are considerable. Ppt turbines powerpoint presentation free to download. Aplikasi gasturbine dikapal gas turbine marine propulsion. Should the gas turbine generator fail during maneuvering, can the steam turbine generator pick up the propulsion load. There are two primary categories of turbine, radial where steam flows from or to the turbine s center and axial where steam flows parallel to the axis of the turbine rotor.
Waste heat recovery boilers exploit the gas turbine exhaust and produce superheated steam at around 30 bar for the steam turbine genset. Main advantages of steam turbines as propulsion plants are high power simple, low weight and compact. It is based on an invention that showed that practical thrust could be generated by the injection of steam through a nozzle into water when assisted by the introduction of air. Read online ge marine gas turbine propulsion for frigates book pdf free download link book now. Marine propulsion steam turbine installations download pdf info publication number us3033002a. This document, and more, is available for download from martins marine engineering page 3 contents. This site is like a library, you could find million. The course also investigates thermodynamic analyses of rankine, brayton, diesel, and combined cycles. Parts pdf steam turbine pdf download steam turbine pdf. This textbook comprises of ten chapters ranging from brief introduction and elements of rocket propulsion, aerothermodynamics to solid, liquid and hybrid propellant rocket engines with chapter on electrical propulsion. Steam propulsion first type of propulsion to replace sail power. The first generation of lng ships built in the 1960s employed steam turbine plants and, in doing so, established the technical concept.
Steam turbine maritime propulsion system was highly utilized between the late 19t h and the early 20th century. Combined gas and steam turbine as prime mover in marine applications. Until this point was reached, the steam from the cruising turbine exhausted into the bypass belt immediately upstream of the fifth stage of the main turbine, so bypassing the first four stages. This course discusses the selection and evaluation of commercial and naval ship power and propulsion systems. Propulsion of liquefied natural gas lng ships is undergoing significant change. The steam turbine is connected to a gear which is connected to a propeller shaft with a fixed propeller. Development of high efficiency marine propulsion plant ultra. Somes turbine engineering, medium steam turbine generator and gear department, turbine division, general electric company, west lynn, mass. Ship propulsion steam turbines a few weeks ago, sunday ship history took a look at early steam powered ships that used the walking beam engine. The gas turbine is established as a naval marine propulsion power unit and the number of ships at sea using the high. All books are in clear copy here, and all files are secure so dont worry about it. Combined gas and steam turbine as prime mover in marine.
The foresighted engineer appreciated that it might be used for propulsion in a marine environment and built a demonstration ship, the steam yacht turbinia in 1894. Uses fossil fuel conventional or nuclear power to produce steam. Download ge marine gas turbine propulsion for frigates book pdf free download link or read online here in pdf. Although the steam turbine took many years of development before its practical use in marine engineering, most historians give charles parsons credit for introducing the steam turbine to world of marine propulsion. The natural gas is stored in liquid state and the boil. In naval applications such a system was used in millenium, a passenger liner. Then you can start reading kindle books on your smartphone, tablet, or computer no kindle device required. A steam turbine is a device that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Marine propulsion engines is a machine that burn fuel to create thrust, which helps ships to move across water. Steam propulsion dual fuel model the ksim engine steam propulsion dual fuel model simulates the steam propulsion plant of a typical modern, large lng tanker machinery. Ge marine gas turbine propulsion for frigates pdf book. The mechanical drive order survey is devoted to engine orders for mechanical drive applications including pumps, compressors, oil exploration machinery, rail and other industrial applications. The thermodynamic design of a combined steam and gas turbine.
Steam and gas turbines for marine propulsion 2nd edition. Its modern manifestation was invented by charles parsons in 1884 the steam turbine is a form of heat engine that derives much of its improvement in thermodynamic efficiency from the use of multiple stages in the expansion of the steam, which results. Index introduction objectives classification of gas turbine applications of gas turbine methods to improve the thermal efficiency of gas turbine jet propulsion types of jet engines rocket engine 3. Marine propulsion steam turbine installations download pdf info publication number. This elements of gas turbine propulsion book is available in pdf formate. Other types of propulsion systems steam turbines are today mostly used on lng tankers. Advances in steam turbines for marine propulsion a. Gas, steam, and water turbines have a casing around the blades that contains and controls the working fluid.
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