fans pumps and steam turbines

... in fluid systems Tables and figures for pressure losses of water, steam, and air in pipe and duct systems are readily available from a number of references (See Figs 55.1 and 55.2.) 55.2.5 Systems ... application and is desirable for pump and fan selection and system analysis for constant flow applications The curve to be plotted is H versus Q, where H=[ET(3}-ET(2}]/g (55.3) Assume that V1 = O and ... will be discussed in Sections 55.6 and 55.7.) 55.3 55.3.1 CHARACTERISTICS OF ROTATING FLUID MACHINES Energy Transfer in Rotating Fluid Machines Most pumps and fans are of the rotating type In a...

Ngày tải lên: 27/01/2014, 16:20

... 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

... 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

... between TM helices and and between TM helices and provide noncovalent interactions with sites on the NBD These latter two linker regions, called intracellular loops and (ICL1 and ICL2) can both ... of cross-linking data and ligand docking, chiefly because of the NBD–TMD reverse domain order, the lack of conserved structural motifs ICD2 and ICD3, and shorter TMD helices and low sequence identity ... pair of motions to align the NBDs, thus forming the nucleotide sandwich dimer, and a concomitant retraction of TM1 and TM2 from TM3 and TM6, generating an outward facing configuration of the TMDs...

Ngày tải lên: 22/03/2014, 21:20

... 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

... Special-Service Pumps Service Pumps Chemical and Process Pumps 265 265 270 viii Contents Pumps for Medical Use Pumps for Handling of Sewage Other Special-Service Pumps Magma Pumps Sump Pumps Irrigation Pumps ... Rotary Pumps Principles of Operation 177 177 Gear-Type Pumps Vane-Type Pumps Piston-Type Pumps 177 180 187 Construction Gear-Type Pumps Vane-Type Pumps Piston-Type Pumps Installation and Operation ... information, and constructive criticism Special thanks to TAT Engineering and Sherwood Pumps xvii Part I Introduction to Basic Principles of Pumps and Hydraulics Chapter Basic Fluid Principles Pumps...

Ngày tải lên: 02/04/2014, 15:31

Ngày tải lên: 27/04/2014, 15:32

... solid objects, colors and smells and tastes, voices and shadows, plants and animals, and people and all their stuff: not only tables and chairs, bridges and churches, dollars and contracts, but ... knowledge and learning and understanding If you attempt to make sense of the world of ideas and meanings, free will and morality, art and science and even philosophy itself without a sound and quite ... doesn’t understand that you can’t be an only child and have an older brother living in Cleveland really doesn’t understand the sentence he asserted, and what you really don’t understand you may...

Ngày tải lên: 10/07/2014, 23:46

... 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

... NGUYỄN HÙNG TÂM , 2007, Giáo trình Bơm Quạt Máy nén ứng dụng • ASHRAE handbook, 2004 Systems and Equipment Chương16,18 ASHRAE handbook, 2001 Fundamental Chương,12,32,34,35 • Lê Chí Hiệp 2001 Kỹ ... điện…gồm: • Quạt, đường ống+co nối, mơtơ+điều khiển, thiết bị đo, thiết bị đầu cuối (Bộ TĐN, ĐHKK ) • Fans: H< 1136mmWG • (tỷ số nén 1.2 )...

Ngày tải lên: 20/03/2015, 13:55

... 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

... CONTENTS Pumps 7.1 PART The Pumping World Introduction I 7.] Types of Positive Displacement Rotary Pumps / 7.] Vane pumps / 7.2 Flexible member pumps / Lobe type pumps / 7.3 Gear pumps / 7.5 Screw pumps ... accuracy and speed One of the reasons for the writing of this book was to produce a handbook for water pumps and systems that would provide basic design and application data and embrace the many and ... Sludge and Effluent CHAPTER 18 Performance I 20.4 Sludge and Grit Pumps Pumps for Animal Waste Disposal Systems I 20.1 I 20.3 Main Flow Pumps I 19.1 I 19.1 pump station Preinstallation of Water Pumps...

Ngày tải lên: 08/03/2018, 15:36

... Handbook The Mc Grawhill Companies JAPANESE MINISTRY OF TRADE AND INDUSTRY 1968 Japanese Industrial Standards: Testing methods for fans and blowers Tokyo, Japan NELIK, LEV 1999 Centrifugal and ... • • • • • • • ASHRAE handbook 2004 Systems and Equipment Chương 16,18, 34, 39, 41, 42 ASHRAE handbook 2005 Fundamental Chương 2,14, 32, 34, 35 BLEIER, FRANK P 1997 Fans Handbook The Mc Grawhill ... phân loại: Bơm (pump): Bơm thể tích (positive displacement pumps) Bơm bánh ăn khớp ngoài, Bơm cánh dẫn, động học ( dynamic pumps) Quạt (fans, blowers): Máy nén khí (compressor): Các thông số đặc...

Ngày tải lên: 20/03/2015, 14:53

Ngày tải lên: 08/08/2012, 17:20

... groups: turbo pumps and volumetric engines The pumps distinguish themselves by the form and the type of impeller, which can be classified as: radial or centrifugal pump, mixed and axial pumps (Figure ... 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 ... centrifugal pumps and rotary pumps, some conclusions can be drawn (Figure 4): (i) the rotary are more appropriate to viscous fluids and to discharges until 200 l/s, while the centrifugal pumps can...

Ngày tải lên: 05/09/2013, 15:28