steam turbines and turboexpanders

... 50MWe and then remains constant at 140bar The steam inlet temperature of the turbine is constant at 540°C for all the examined types and sizes of steam turbines Furthermore, the inlet steam flow ... the Steam Pro software module of the Thermoflow Suite 18 package [1] is used The investigation covers all three major types of steam turbines, that is, condensing, back-pressure and extraction turbines, ... 300oC and 400oC After circulating through the receivers the oil is passed through a heat exchanger where the heat it contains is extracted to raise steam in a separate sealed system and the steam...

Ngày tải lên: 05/09/2013, 14:59

... operating conditions and geometry The corresponding choking velocity (acoustic velocity in the superheated steam region) is shown in Figs 58.16 and 58.17 for superheated steam and wet steam, respectively ... useful characteristic of steam is the product of pressure and specific volume plotted versus enthalpy in Figs 58.18 and 58.19 for low-temperature/wet steam and superheated steam, ^ = ™ ,BTU/LB-R ... of air and a significant amount of steam (significant implies greater than 2-4%) Not to limit the application to air and steam, the working fluid could be the products of combustion and steam, ...

Ngày tải lên: 25/10/2013, 13:15

... regulate the steam control valve position and hence load generated  To control the initial run up and synchronization of the machine  To assist in matching the power generated to that demanded by ... OIL RESETS STOP VALVES (ESVs AND Ivs) PILOT VALVE(STARTING DEVICE) POSITION RAISED   START-UP OIL AND AUXILIARY START-UP OIL CIRCUITS ARE DRAINED ESVS OPEN AT 42% AND IVS OPEN AT 56% POSITIONS ... The control valve opening depends on secondary oil pressure and there is a definite relationship between the opening of HP control valve and IP control valve Between 40 to 200MW the turbine load...

Ngày tải lên: 03/01/2014, 19:50

... AND ABANDONED: PLYMOUTH, SYDNEY, AND NEW SOUTH WALES 1852, AND ABANDONED: INVESTIGATION OF 1851 AND 1853, AND NEW AUSTRALIAN CONTRACT IN THOMAS IN 1856: HALIFAX, NEWFOUNDLAND, BERMUDA, AND ST ... thence by land to the Red Sea, and thence to China and the East-Indies; or from England by her steam lines around the Cape of Good Hope to Australia and the EastIndies; or by slow and uncertain ... inquiry to South-America, and China, and India, and see how enormous and useless a waste of money and interest is incurred in the many millions which by sailing vessels and slow steamers is fruitlessly...

Ngày tải lên: 17/02/2014, 02:20

... Technology Characterization ii Steam Turbines Technology Characterization – Steam Turbines Introduction and Summary Steam turbines are one of the most versatile and oldest prime mover technologies ... the high pressures used in steam turbines, the casing is quite thick, and consequently steam turbines exhibit large thermal inertia Steam turbines must be warmed up and cooled down slowly to minimize ... power) and other design features enable steam turbines to be more efficient than reciprocating steam engines operating from the steam at the same inlet conditions and exhausting into the same steam...

Ngày tải lên: 24/03/2014, 05:20

Ngày tải lên: 27/04/2014, 15:32

... Engineers This code or standard was developed under procedures accredited as meeting the criteria for American National Standards The Standards Committee that approved the code or standard was balanced ... 4-4.4.1-1 4-4.4.1-2 Head Definition, Measurement and Calibration, Vertical Shaft Impulse Turbine Reference Elevation, Zc, of Turbines and Pump -Turbines Limits of Permissible Deviations ... that individuals from competent and concerned interests have had an opportunity to participate The proposed code or standard was made available for public review and comment that provides an opportunity...

Ngày tải lên: 08/08/2014, 13:20

... used in large steam turbines Each control valve supplies steam to its own control stage section; the number of these valves in large steam turbines is usually from three to six and they are opened ... permanent (on-line) and intermittent (off-line) monitoring systems Vibration generation and vibrodiagnostic symptoms Just like all rotating machines, steam turbines generate broadband vibration, so ... exhaustive and is concentrated on issues relevant to steam turbine applications For comprehensive and detailed treatment the reader is referred e.g to (Morel, 1992; Bently and Hatch, 2002; Randall,...

Ngày tải lên: 13/09/2016, 10:38

Ngày tải lên: 06/03/2017, 09:26

... the steam is prevented, even in the event of sudden or high steam demand, and high quality steam is made available continuously The large steam chamber, with a correspondingly large evaporator and ... in eco friendly, cost effective and efficient heating systems Steam boilers and waste heat boilers Steam is used in many industrial processes as an energy source and as a medium for carrying chemical ... paper and building material industry, refineries, the pharmaceutical industry and the food processing industry Steam drives turbines for the generation of power, vulcanises rubber products and...

Ngày tải lên: 09/03/2017, 14:06

Ngày tải lên: 08/08/2012, 17:20

... motor engines (turbines) and in receptor engines (pumps) [2] Despite the place where they work, the motor engines divide themselves in two different groups: action and reaction turbines When the ... flow and binary capacity depends on the size of the rod when compared to the size of the handle There is an advantage in using the largest possible rod and in reducing the length of the handle ... constant discharge) [19] 3.4 Propeller turbines The study in micro turbines is not highly developed, which allows studying its efficiency and versatility, searching and developing experimental components...

Ngày tải lên: 05/09/2013, 15:28

... G., Li X and Zhang X Optimal Micro-Siting of Wind Turbines by Genetic Algorithms Based on Improved Wind and Turbine Models Proc of Joint 48th IEEE Conference on Decision and Control and 28th ... For both HAWT and VAWT wind farms, the size of the farm considered is 50D x 50D and a wind with uniform speed of 12 m/s is considered Since each column of turbines has a width of 5D and the ground ... Journal of Energy and Environment (IJEE), Volume 3, Issue 6, 2012, pp.927-938 935 (a) Best, mean and median objective valuses for Case I (b) Standard deviations for Case I (c) Best, mean and median...

Ngày tải lên: 05/09/2013, 17:03

... Printed and bound in Great Britain v Contents Preface vii Introduction ix Theory and general principles Gas-diesel and dual-fuel engines Exhaust emissions and control Fuels and lubes: chemistry and ... circle diameters of the input and output gears are respectively = 14 POUNDER’S MARINE DIESEL ENGINES AND GAS TURBINES d1 and d and the speeds of the two shafts are n1 and n2, the circumferential ... emissions reduction and automation systems—which are driven by: ship designer demands for more compactness and lower weight; shipowner demands for higher reliability, serviceability and overall operational...

Ngày tải lên: 13/02/2014, 16:20

... 198 Cumberland, Mrs Seraphina 122 Cumberland, Miss Mildred 174, 179 Cumberland, Miss Constance 150 Cumberland, Steamer 63 A Century of Sail and Steam on the Niagara by Barlow Cumberland Currie, ... CUMBERLAND Dunain, Port Hope A CENTURY OF SAIL AND STEAM ON THE NIAGARA RIVER Chap I. The First Eras of Canoe and Sail Chap II. The First Steamboats on the River and Lake Ontario 17 Chap III. More Steamboats ... Packet 15 Duke and Duchess of York 183 Dunbarton, Scotland 38 E Early Steamer Routes and Rates 23, 24, 29, 31, 32, 134 A Century of Sail and Steam on the Niagara by Barlow Cumberland Early Passenger...

Ngày tải lên: 20/02/2014, 08:20

... BestPractices BestPractices BestPractices Steam Steam Steam Steam Steering Committee Marketing and Communications Subcommittee Technical Subcommittee Policy and Metrics Subcommittee Resource Dynamics ... Steam Generation in the Pulp and Paper, Chemical Manufacturing, and Petroleum Refining Industries 11 Steam Use in the Pulp and Paper, Chemical Manufacturing, and Petroleum ... Manufacturing, and Petroleum Refining Industries ix x Steam System Opportunity Assessment for the Pulp and Paper, Abstract This report assesses steam generation and use in the pulp and paper, chemical...

Ngày tải lên: 01/04/2014, 00:20

... furnace and convection pass, steam superheaters (primary and secondary), steam reheater, boiler or steam generating bank (industrial units only), economizer, steam drum, attemperator and steam ... fuels and combustion technology, heat transfer and fluid mechanics, materials and manufacturing technologies, structural analysis and design, fuels and water chemistry, and measurement and monitoring ... Fossil fuel steam generator components Modern steam generators are a complex configuration of thermal-hydraulic (steam and water) sections which preheat and evaporate water, and superheat steam These...

Ngày tải lên: 01/04/2014, 11:42

... the generator and rectifier and possibly the inverter and grid connection • Detailed dynamics analysis for more accurate stress calculations and fatigue analysis • Foundation design, and • Control ... engineer and aerodynamicist to attempt to match them Many of the basic control issues are shared by large and small turbines and those that are not are highlighted in the relevant chapters Small turbines ... aircraft, and hummingbirds rather than eagles The later discussion of airfoil lift and drag and blade performance calculations identifies many features particular to small turbines • Large wind turbines...

Ngày tải lên: 31/05/2014, 02:01