Centrifugal pump technology involves a broad spectrum of flow phenomena, which have a profound impact on design and operation through the achieved efficiency, the stability of the head-capacity characteristic, component failure due to fatigue, as well as material damage caused by cavitation, hydro-abrasive wear or erosion corrosion. Operation and life cycle costs of pumping equipment depend to a large extent on how well these phenomena and the interaction of the pump with the system are understood. The book comprises thirteen chapters covering: theory of centrifugal pump impeller, design of mixed flow impellers, pump casing, hydraulic performance, leakage-disk friction and mechanical losses, water hammer, special operating conditions, and its applications. The book also describes cavitation in pumps, and how unacceptable cavitation can be avoided with the aid of an inducer or using a bleeding system. It explains cavitation problems such as hydraulic performance loss, hydro-dynamically or thermodynamically induced surging, and cavitation erosion/corrosion. The book aims to be simple as is compatible with reasonably complete treatment of the subject. The mathematics has been kept as elementary as possible and many of the standard proofs have been simplified. This book is intended for professional engineers, researchers, specialist students, plant operators and maintenance personnel, plant engineers, and consulting engineers.
Significantly revised and updated since its first publication in 1996, Absorption Chillers and Heat Pumps, Second Edition discusses the fundamental physics and major applications of absorption chillers. While the popularity of absorption chillers began to dwindle in the United States in the late 1990's, a shift towards sustainability, green buildings and the use of renewable energy has brought about a renewed interest in absorption heat pump technology. In contrast, absorption chillers captured a large market share in Asia in the same time frame due to relative costs of gas and electricity. In addition to providing an in-depth discussion of fundamental concepts related to absorption refrigeration technology, this book provides detailed modeling of a broad range of simple and advanced cycles as well as a discussion of applications. New to the Second Edition: * Offers details on the ground-breaking Vapor Surfactant theory of mass transfer enhancement * Presents extensively revised computer examples based on the latest version of EES (Engineering Equation Solver) software, including enhanced consistency and internal documentation * Contains new LiBr/H2O property routines covering a broad range of temperature and the full range of concentration * Utilizes new NH3/H2O helper functions in EES which significantly enhance ease of use * Adds a new chapter on absorption technology applications * Offers updated absorption fluid transport property information Absorption Chillers and Heat Pumps, Second Edition provides an updated and thorough discussion of the physics and applications of absorption chillers and heat pumps. An in-depth guide to evaluating and simulating absorption systems, this revised edition provides significantly increased consistency and clarity in both the text and the worked examples. The introduction of the vapor surfactant theory is a major new component of the book. This definitive work serves as a resource for both the newcomer and seasoned professional in the field.
This book focuses on Nuclear-Pumped Laser (NPL) technology and provides the reader with a fundamental understanding of NPLs, a review of research in the field and exploration of large scale NPL system design and applications.
Early chapters look at the fundamental properties of lasers, nuclear-pumping and nuclear reactions that may be used as drivers for nuclear-pumped lasers. The book goes on to explore the efficient transport of energy from the ionizing radiation to the laser medium and then the operational characteristics of existing nuclear-pumped lasers. Models based on Mathematica, explanations and a tutorial all assist the reader's understanding of this technology.
Later chapters consider the integration of the various systems involved in NPLs and the ways in which they can be used, including beyond the military agenda. As readers will discover, there are significant humanitarian applications for high energy/power lasers, such as deflecting asteroids, space propulsion, power transmission and mining.
This book will appeal to graduate students and scholars across diverse disciplines, including nuclear engineering, laser physics, quantum electronics, gaseous electronics, optics, photonics, space systems engineering, materials, thermodynamics, chemistry and physics.
All the expert guidance you need to understand, build, and operate GPS receivers<br> <br> The Second Edition of this acclaimed publication enables readers to understand and apply the complex operation principles of global positioning system (GPS) receivers. Although GPS receivers are widely used in everyday life to aid in positioning and navigation, this is the only text that is devoted to complete coverage of their operation principles. The author, one of the foremost authorities in the GPS field, presents the material from a software receiver viewpoint, an approach that helps readers better understand operation and that reflects the forecasted integration of GPS receivers into such everyday devices as cellular telephones. Concentrating on civilian C/A code, the book provides the tools and information needed to understand and exploit all aspects of receiver technology as well as relevant navigation schemes:<br> * Overview of GPS basics and the constellation of satellites that comprise the GPS system<br> * Detailed examination of GPS signal structure, acquisition, and tracking<br> * Step-by-step presentation of the mathematical formulas for calculating a user's position<br> * Demonstration of the use of computer programs to run key equations<br> * Instructions for developing hardware to collect digitized data for a software GPS receiver<br> * Complete chapter demonstrating a GPS receiver following a signal flow to determine a user's position<br> <br> The Second Edition of this highly acclaimed text has been greatly expanded, including three new chapters:<br> * Acquisition of weak signals<br> * Tracking of weak signals<br> * GPS receiver related subjects<br> <br> Following the author's expert guidance and easy-to-follow style, engineers and scientists learn all that is needed to understand, build, and operate GPS receivers. The book's logical flow from basic concepts to applications makes it an excellent textbook for upper-level undergraduate and graduate students in electrical engineering, wireless communications, and computer science.
be round like
a pumpkin and even orange
like a pumpkin, but this is NOT
a pumpkin! If it's not a pumpkin,
then what is it? Preschoolers and
toddlers will love knowing the
answer and enjoy the fun,
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