turbines nozzles compressors and pumps

liquid ring vacuum pumps, compressors and systems_conventional and hermetic design

Ngày tải lên : 02/04/2014, 15:36

... units and their control 146 The three phases of evacuation 146 Vacuum pumps in series 147 Names and definitions of vacuum pumps and their accessories 150 Liquid Ring Vacuum Pumps and Liquid Ring Compressors ... Electric heating and insulation on pumps and plants 279 Names and definitions vacuum systems, components and equipment 281 Components for Pump Units with Liquid Ring Vacuum Pumps and Compressors ... with liquid ring compressors 231 Safety standards for rotating machines 232 Characteristics and fields of applications of liquid ring vacuum pumps and compressors 234 Vacuum and Compressor Plants...

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Hydrodynamic and performance of low power turbines: conception, modelling and experimental tests

Ngày tải lên : 05/09/2013, 15:28

... 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...

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Evaluation of heat pumps usage and energy savings in residential buildings

Ngày tải lên : 05/09/2013, 16:10

... 140 and 205 m2) and large size (more than 205 m2) As shown in Figure 2, the percentages of the house sizes in the test group are 54%, 40%, and % for large, medium and small homes respectively and ... 33%, 62%, and 5% for large, medium and small homes respectively The percentages of 1-4 years old, 5-8 years old and 9-12 years old homes in the control group sample are 40% , 46 % and 14 % respectively ... homes that have utilized and relied on heat pumps as their main heating source (test group) and homes that have relied on other heating alternatives such as gas, electricity and a combination of...

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Optimal placement of horizontal - and vertical - axis wind turbines in a wind farm for maximum power generation using a genetic algorithm

Ngày tải lên : 05/09/2013, 17:03

... 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...

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Tài liệu PUMPS AND FANS pptx

Ngày tải lên : 27/01/2014, 16:20

... 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 ... head, and power will vary with angular frequency as follows: Qoc N H * N2 P*N3 55.4 55.4.1 PUMPSELECTION Basic Types: Positive Displacement and Centrifugal (Kinetic) Positive displacement pumps...

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Tài liệu iPounder’s Marine Diesel Engines and Gas Turbines Eighth edition docx

Ngày tải lên : 13/02/2014, 16:20

... 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...

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Know and Understand Centrifuga I Pumps docx

Ngày tải lên : 05/03/2014, 17:20

... Know and Understand Cent r ifuga I Pumps Know and Understand Centr ifuga I Pumps by Larry Bachus and Angel Custodio ELSEVIER UK USA JAPAN Elsevier ... Vertical pumps w Lift pumps and pumps in suction lift conditions w Pumps in vacuum w Pumps operating to the right of their best efficiency point (BEP) This is explained in Chapters and Turbulence ... fires and chasing emergencies This book is directed toward the understanding of industrial pumps and their systems It won’t be a guide on how to correctly design pumps, nor how to rebuild and repair...

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Báo cáo Y học: Inhibition of the SERCA Ca21 pumps by curcumin Curcumin putatively stabilizes the interaction between the nucleotide-binding and phosphorylation domains in the absence of ATP pot

Ngày tải lên : 08/03/2014, 23:20

... activities (X) and Ca2þ uptake (B) in a variety of microsomes are presented: (A) and (B), skeletal muscle SR; (C) and (D), cardiac SR; (E) and (F), platelet microsomes; and (G) and (H), cerebellar ... acid, 0.25% (w/v) copper sulfate, and 0.2 M sodium acetate Twohundred and ﬁfty microliters of 5% (w/v) ammonium molybdate was then added and mixed thoroughly and 0.25 mL of ELAN solution was added ... ﬂuorescence level and the addition of 1.25 mM EGTA and 1.5 mM CaCl2 (Fluo-3) or mM CaCl2 (Magnesium green) determines Fmin and Fmax, respectively The Kd values used for Fluo-3 and Magnesium green...

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Báo cáo khoa học: Multidrug efﬂux pumps: drug binding – gates or cavity? Emily Crowley and Richard Callaghan pdf

Ngày tải lên : 22/03/2014, 21:20

... cytotoxicity and photolabelling Result: Mutations in TM9 produce a distinct resistance pattern similar to TM6 TM9 and TM6 may co-operate in IAAP labelling Ligand: [3H]propafenone and analogues ... environment – implicate TM3, TM5, TM8 and TM11 forming DBS Strategy: ABCB1 chimera assessed by cytotoxicity and photolabelling Result: Loop between TM11 and TM12 (EC0) modulates resistance spectrum ... helices (TM1, TM4-7 and TM9-12) may line the central cavity, contribute to the drug-binding pocket and ⁄ or regulate conformational coupling within ABCB1 It is worth noting that TM6 and TM12 have consistently...

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Báo cáo khoa học: Multidrug efflux pumps: The structures of prokaryotic ATP-binding cassette transporter efflux pumps and implications for our understanding of eukaryotic P-glycoproteins and homologues ppt

Ngày tải lên : 22/03/2014, 21:20

... 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...

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Báo cáo Y học: Inhibition of SERCA Ca2+ pumps by 2-aminoethoxydiphenyl borate (2-APB) 2-APB reduces both Ca2+ binding and phosphoryl transfer from ATP, by interfering with the pathway leading to the Ca2+-binding sites ppt

Ngày tải lên : 31/03/2014, 23:20

... M H3PO4, and left to dry, then placed in scintillant and counted physics, model SX17 MV) as described by Longland et al [13] Brieﬂy, the sample handling unit possesses two syringes, A and B (drive ... spectrophotometer and the absorbance was monitored at 422 and 390 nm, and the difference taken Ca2+-binding to the ATPase was measured using the dual labeling technique of Longland et al [13] ATPase ... catalytic and regulatory sites were unchanged (i.e 9.4 ± 2.8 and 1.3 ± 0.5 mM, respectively) The Vmax values, however, were reduced The catalytic and regulatory Vmax values were 2.5 ± 0.1 and 5.4...

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audeltm pumps and hydraulics all new 6th edition

Ngày tải lên : 02/04/2014, 15:31

... 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...

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centrifugal pumps for petroleum, heavy duty chemical, and gas industry services

Ngày tải lên : 02/04/2014, 15:32

... Forces and Moments 2.4.1 Steel and alloy steel horizontal pumps, and their baseplates, and vertically suspended pumps shall be designed for satisfactory performance when subjected to the forces and ... seals and glands for all pumps, except vertically suspended pumps shipped without drivers mounted, shallbe installed in the pump before shipment and shall be clean and ready initial service On pumps ... Suction and Top Discharge Nozzles 2-8 2-6"Coordinate System for the Forces and Momentsin Table 2.1A (2.1B): Horizontal Pumps with Top Nozzles 2-9 2-7-Relationship Between Flow and Vibration...

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small wind turbines [electronic resource] analysis, design, and application

Ngày tải lên : 31/05/2014, 02:01

... 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...

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engineering - pumps & hydraulic turbines

Ngày tải lên : 12/06/2014, 16:47

... at pumps suction and discharge nozzles The subscripts "x" and "y" are used for variables at points in each inlet and outlet subsystem and usually are suction and discharge vessels Also "x" and ... negligible in equipment nozzles Note that the subscripts "i" and "o" are used for variables at pumps and HPRTs inlet and outlet nozzles, respectively, while the subscripts "s" and "d" are used only ... 12-13 show series and parallel pumps curves, a system curve, and the effect of operating one, two or three pumps in a system In both figures, the operating points for both pumps "A" and "B" are the...

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Know and Understand Centrifugal Pumps potx

Ngày tải lên : 27/06/2014, 17:20

... Know and Understand Cent r ifuga I Pumps Know and Understand Centr ifuga I Pumps by Larry Bachus and Angel Custodio ELSEVIER UK USA JAPAN Elsevier ... Vertical pumps w Lift pumps and pumps in suction lift conditions w Pumps in vacuum w Pumps operating to the right of their best efficiency point (BEP) This is explained in Chapters and Turbulence ... fires and chasing emergencies This book is directed toward the understanding of industrial pumps and their systems It won’t be a guide on how to correctly design pumps, nor how to rebuild and repair...

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intuition pumps and other tools for thinking - daniel c. dennett

Ngày tải lên : 10/07/2014, 23:46

... 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...

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Hydraulic Turbines and Pump-Turbines Performance Test Codes ppt

Ngày tải lên : 08/08/2014, 13:20

... 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...

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