Krishna P. Singh – författare

A tubular heat exchanger exemplifies many aspects of the challenge in designing a pressure vessel. High or very low operating pressures and temperatures, combined with sharp temperature gradients, and large differences in the stiffnesses of adjoining parts, are amongst the legion of conditions that behoove the attention of the heat exchanger designer. Pitfalls in mechanical design may lead to a variety of operational problems, such as tube-to-tubesheet joint failure, flanged joint leakage, weld cracks, tube buckling, and flow induced vibration. Internal failures, such as pass partition bowing or weld rip-out, pass partition gasket rib blow-out, and impingement actuated tube end erosion are no less menacing. Designing to avoid such operational perils requires a thorough grounding in several disciplines of mechanics, and a broad understanding of the inter­ relationship between the thermal and mechanical performance of heat exchangers. Yet, while there are a number of excellent books on heat ex­ changer thermal design, comparable effort in mechanical design has been non-existent. This apparent void has been filled by an assortment of national codes and industry standards, notably the "ASME Boiler and Pressure Vessel Code" and the "Standards of Tubular Exchanger Manufacturers Association. " These documents, in conjunction with scattered publications, form the motley compendia of the heat exchanger designer''s reference source. The subject matter clearly beckons a methodical and comprehensive treatment. This book is directed towards meeting this need.

A tubular heat exchanger exemplifies many aspects of the challenge in designing a pressure vessel. High or very low operating pressures and temperatures, combined with sharp temperature gradients, and large differences in the stiffnesses of adjoining parts, are amongst the legion of conditions that behoove the attention of the heat exchanger designer. Pitfalls in mechanical design may lead to a variety of operational problems, such as tube-to-tubesheet joint failure, flanged joint leakage, weld cracks, tube buckling, and flow induced vibration. Internal failures, such as pass partition bowing or weld rip-out, pass partition gasket rib blow-out, and impingement actuated tube end erosion are no less menacing. Designing to avoid such operational perils requires a thorough grounding in several disciplines of mechanics, and a broad understanding of the inter­ relationship between the thermal and mechanical performance of heat exchangers. Yet, while there are a number of excellent books on heat ex­ changer thermal design, comparable effort in mechanical design has been non-existent. This apparent void has been filled by an assortment of national codes and industry standards, notably the "ASME Boiler and Pressure Vessel Code" and the "Standards of Tubular Exchanger Manufacturers Association. " These documents, in conjunction with scattered publications, form the motley compendia of the heat exchanger designer's reference source. The subject matter clearly beckons a methodical and comprehensive treatment. This book is directed towards meeting this need.

This book offers a comprehensive guide to the identification, detection, characterization, classification and management of plant pathogens and other beneficial microbes in agriculture. The science of plant pathology is a dynamic field and, given the growing interest in sustainable agricultural practices, plant disease management has also gained importance. Further, there has been a shift from traditional chemical-based methods to eco-friendly integrated disease management strategies with a greater focus on bio-control and other eco-friendly technologies. This book provides a comprehensive and timely account of latest concepts and advances in the field of plant pathology, including detection and diagnosis, host resistance, disease forecasting and plant biotechnological approaches. Accordingly, it will be of great interest to academics and all stakeholders working in the fields of plant pathology, microbiology, biotechnology, plant breeding, and other life sciences.