Download or read book Practical Two stage Pipe Expansions for Centrifugal Pump Irrigation written by John A. Fazio and published by . This book was released on 1989 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Centrifugal irrigation pumps discharge fluids at high velocities that must be slowed to minimize energy losses due to friction. Pipe expansions make the transition to larger pipes associated with slower velocities. Expansions convert the upstream velocity head to static head in the downstream pipe. The transition to a larger pipe is commonly an abrupt or single-stage conical pipe expansion. Two-stage conical pipe expansions have been shown to be more efficient and a potential alternative. Four two-stage pipe expansions using standardly available materials were constructed and tested at common irrigation flow rates. These expansions require less space and cost less than optimum two-stage expansions. Pressure change across the pipe expansions were measured. The calculated head loss coefficients were compared to published values of abrupt, single-stage, and optimum two-stage pipe expansions. Head loss coefficients for the 50 - 100 mm and 75 - 150 mm two-stage expansions averaged 0.32 and 0.28 respectively. Loss coefficients for the 100 - 200 mm and 125 - 250 rim two-stage expansions averaged 0.16 and 0.17 respectively. The two-stage expansions operated more efficiently than abrupt and single-stage expansions and were economically practical for many pumping situations. The 50 - 100 mm two-stage expansion was only a slight improvement over a single-stage welding cone expansion. The fitting was economical as electricity prices rose over $0.05/kWh for crops requiring 3000 annual operating hours. The larger fittings became progressively better. The 75 - 150 mm expansion became economically practical at $0.03/kWh when operating more than 1,600 hours. The 100 - 200 mm and 125 - 250 mm two-stage fittings were always practical. Beginning with the 75 - 150 mm size and increasingly with the next two larger sizes, optimum two-stage fittings became economically competitive. Optimum two-stage expansions operated most efficiently, but because of their high cost were only practical for high electricity costs and long irrigation seasons. The three largest two-stage expansions tested are improvements over abrupt or single-stage expansions when constructing a pump discharge. Replacing an existing, less efficient expansion may not be cost effective because the existing fitting cost is lost. While only a small part of an irrigation system, these two-stage expansions can improve system performance with little extra cost and without requiring difficult to obtain components.

Download or read book Circular written by and published by . This book was released on 1989 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transactions of the American Society of Civil Engineers written by American Society of Civil Engineers and published by . This book was released on 1992 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. 29-30 contain papers of the International Engineering Congress, Chicago, 1893; v. 54, pts. A-F, papers of the International Engineering Congress, St. Louis, 1904.

Download or read book Masters Theses in the Pure and Applied Sciences written by W. H. Shafer and published by Plenum Publishing Corporation. This book was released on 1992 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses Listed by Discipline: Aerospace Engineering. Agricultural Economics, Sciences and Engineering. Architechtural Engineering and Urban Planning. Astronomy. Astrophysics. Ceramic Engineering. Communications Engineering and Computer Science. Cryogenic Engineering. Electrical Engineering. Engineering Mechanics. Engineering Physics. Engineering Science. Fuels, Combustion, and Air Pollution. General and Environmental Engineering. Geochemistry and Soil Science. Geological Sciences and Geophysical Engineering. Geology and Earth Science. Geophysics. Industrial Engineering. Marine and Ocean Engineering. Materials Science and Engineering. Mechanical Engineering and Bioengineering. Metallurgy. Meteorology and Atmospheric Science. 17 additional disciplines. Index.

Download or read book College of Engineering Research Activities Annual Report written by and published by . This book was released on 1990 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ASCE Combined Index written by American Society of Civil Engineers and published by . This book was released on 1991 with total page 1054 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indexes materials appearing in the Society's Journals, Transactions, Manuals and reports, Special publications, and Civil engineering.

Download or read book Research Activities Annual Report written by and published by . This book was released on 1983 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Southwest Contractor and Manufacturer written by and published by . This book was released on 1910 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Centrifugal Pumps written by Val S. Lobanoff and published by Elsevier. This book was released on 2013-10-22 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: Centrifugal Pumps: Design and Application, Second Edition focuses on the design of chemical pumps, composite materials, manufacturing techniques employed in nonmetallic pump applications, mechanical seals, and hydraulic design. The publication first offers information on the elements of pump design, specific speed and modeling laws, and impeller design. Discussions focus on shape of head capacity curve, pump speed, viscosity, specific gravity, correction for impeller trim, model law, and design suggestions. The book then takes a look at general pump design, volute design, and design of multi-stage casing. The manuscript examines double-suction pumps and side-suction design, net positive suction head, and vertical pumps. Topics include configurations, design features, pump vibration, effect of viscosity, suction piping, high speed pumps, and side suction and suction nozzle layout. The publication also ponders on high speed pumps, double-case pumps, hydraulic power recovery turbines, and shaft design and axial thrust. The book is a valuable source of data for pump designers, students, and rotating equipment engineers.

Download or read book Pump Handbook written by Igor J. Karassik and published by McGraw Hill Professional. This book was released on 2007-12-18 with total page 1826 pages. Available in PDF, EPUB and Kindle. Book excerpt: Rely on the #1 Guide to Pump Design and Application-- Now Updated with the Latest Technological Breakthroughs Long-established as the leading guide to pump design and application, the Pump Handbook has been fully revised and updated with the latest developments in pump technology. Packed with 1,150 detailed illustrations and written by a team of over 100 internationally renowned pump experts, this vital tool shows you how to select, purchase, install, operate, maintain, and troubleshoot cutting-edge pumps for all types of uses. The Fourth Edition of the Pump Handbook features: State-of-the-art guidance on every aspect of pump theory, design, application, and technology Over 100 internationally renowned contributors SI units used throughout the book New sections on centrifugal pump mechanical performance, flow analysis, bearings, adjustable-speed drives, and application to cryogenic LNG services; completely revised sections on pump theory, mechanical seals, intakes and suction piping, gears, and waterhammer; application to pulp and paper mills Inside This Updated Guide to Pump Technology • Classification and Selection of Pumps • Centrifugal Pumps • Displacement Pumps • Solids Pumping • Pump Sealing • Pump Bearings • Jet Pumps • Materials of Construction • Pump Drivers and Power Transmission • Pump Noise • Pump Systems • Pump Services • Intakes and Suction Piping • Selecting and Purchasing Pumps • Installation, Operation, and Maintenance • Pump Testing • Technical Data

Download or read book Engineering Record Building Record and Sanitary Engineer written by Henry Coddington Meyer and published by . This book was released on 1892 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook on Pressurized Irrigation Techniques written by Andreas Phocaides and published by Food & Agriculture Org.. This book was released on 2007 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing the efficiency of water use and enhancing agricultural water productivity at all levels of the production chains are becoming priorities in a growing number of countries. In particular, shifting to modern on-farm irrigation practices can contribute to a substantial increase in both water use efficiency and water productivity. The objective of this handbook is to provide a practical guide on the use of pressurized irrigation techniques to farmers, irrigation technicians, and extension workers in the field. In this second edition, the handbook has been considerably revised, including new chapters on low-cost drip irrigation and pipe distribution systems for smallholders.--Publisher's description.

Download or read book Irrigation and Drainage Engineering written by Peter Waller and published by Springer. This book was released on 2015-11-18 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook focuses specifically on the combined topics of irrigation and drainage engineering. It emphasizes both basic concepts and practical applications of the latest technologies available. The design of irrigation, pumping, and drainage systems using Excel and Visual Basic for Applications programs are explained for both graduate and undergraduate students and practicing engineers. The book emphasizes environmental protection, economics, and engineering design processes. It includes detailed chapters on irrigation economics, soils, reference evapotranspiration, crop evapotranspiration, pipe flow, pumps, open-channel flow, groundwater, center pivots, turf and landscape, drip, orchards, wheel lines, hand lines, surfaces, greenhouse hydroponics, soil water movement, drainage systems design, drainage and wetlands contaminant fate and transport. It contains summaries, homework problems, and color photos. The book draws from the fields of fluid mechanics, soil physics, hydrology, soil chemistry, economics, and plant sciences to present a broad interdisciplinary view of the fundamental concepts in irrigation and drainage systems design.

Download or read book Engineering Contracting written by and published by . This book was released on 1919 with total page 1356 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Engineering and Contracting written by and published by . This book was released on 1919 with total page 1550 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Pumps and Pumping written by Brian Nesbitt and published by Elsevier. This book was released on 2006-10-18 with total page 499 pages. Available in PDF, EPUB and Kindle. Book excerpt: Written by an experienced engineer, this book contains practical information on all aspects of pumps including classifications, materials, seals, installation, commissioning and maintenance. In addition you will find essential information on units, manufacturers and suppliers worldwide, providing a unique reference for your desk, R&D lab, maintenance shop or library. * Includes maintenance techniques, helping you get the optimal performance out of your pump and reducing maintenance costs * Will help you to understand seals, couplings and ancillary equipment, ensuring systems are set up properly to save time and money * Provides useful contacts for manufacturers and suppliers who specialise in pumps, pumping and ancillary equipment

Download or read book California Cultivator written by and published by . This book was released on 1919 with total page 896 pages. Available in PDF, EPUB and Kindle. Book excerpt: