Bøker av Kameshwar Upadhyay

The book aims to impart basic knowledge of vibration and its effects on the process, functions and life of industrial machinery and acceptable limits of vibration, derived from different international standards. It highlights characteristics of vibration amplitude (displacement, velocity and acceleration), frequency and phase.It explains the basics of vibration theories of free & forced, single and double degree, damped and un-damped vibration systems, mode shapes, critical speeds of rotor and presents solution of complex vibrations in simplified mathematical models. Vibration measurement techniques, various types of transducers and their applications are also illustrated briefly.The book elaborates fault diagnosis & condition analysis techniques through simplified tabular charts for machines and mechanical modelling solution of vibration on complex bodies. Condition analysis by machine performance like efficiency, water rate, fuel consumption, or output and specific functional deviation(s) in machine is elaborated specially for setting alarms at suitable parameter of vibration.The static and dynamic balancing techniques are explored for single plane balancing, using only amplitude, amplitude and phase, or only phase for practical applications. In situ two-plane balancing by graphical, mathematical and computerized techniques are described in a simplified manner to achieve acceptable value of unbalance (reference international standards for different types of machines). The case studies of single or multi-degree freedom, damped or un-damped, torsional, and translational vibration are described for understanding, trouble diagnosis and their remedial actions to resolve the problems.

Numerous developments have taken place in centrifugal pumps to transfer liquids for different applications in efficient manner. A safe, cost effective & efficient operation at rated capacity, efficiency and high reliability is the basic requirement of pumps. To meet the objective, the book deals with basic concept of theory added working principle, different type of pump & their application, constructional features, design guide lines & rotor dynamics, selection, erection, trouble diagnosis & remedial actions in abnormal situations. The metallurgical requirements and developments for pump components had been discussed briefly for acquaintance of plant engineers to help in selection &, procurement. Concept of NPSH, specific speed, sealing system and Characteristic curves of pump with the help of graphs, theoretical formulae, sketches and examples may promote understanding in field applications. Operation and Maintenance philosophy is presented to cover wide domain of pumping system The systematic and predictive maintenance programs & their applications are discussed related to centrifugal pumps. A brief out line discussions are presented on electric system involved in pump installation and maintenance. Since, alignment of pump, especially the multi stage pumps with driver (motor or steam turbine) plays a vital role in smooth operation and machine life, author has dealt separately the alignment methods and practices with illustrative practical examples. The book is formatted in the form of Work Book to help the working engineers as reference at any stage of their task performance.

Fundamental principles and theoretical aspect of turbine operation are presented first to provide a basic knowledge of working principle of turbine; followed by other principal divisions - turbines construction, installation, governing system, lubrication & controls, operation and maintenances for ease of understanding. The book is divided in twelve chapters dealing with basics of turbine, cycles of operation, theory of turbine, construction of turbine, installation, metallurgy of steam turbine, governing system, lubrication and controls, operation, maintenance, condition monitoring by performance, and electrical systems. Author has tried his best to cover all important aspects of various disciplines in power plant to accomplish a single complementing book for engineers working in power plant. The book is formatted as work book, dealing precisely with the help of sketches, tables, graphs and troubleshooting charts to enable readers to use it as practical reference book in their work area. The readers may get acquainted to adopt the standard operating procedures, installation, predictive & predictive maintenance practices to operate STG at full capacity and optimum thermal efficiency. The book familiarizes from erection to commissioning activities and subsequent operation and maintenance of steam turbo-generators and auxiliaries. Some aspects related to STG e.g. DCS, Centrifugal pumps, Cooling Towers are not covered in this book as these parts are described in details in other publications of author.