More and more vehicles are being electrified. Mobile working machines and heavy trucks are not excluded, and these machines are often hydraulically intense. Electrification entails new requirements for the hydraulic system and its components, and these requirements must be taken into consideration. Hydraulic systems have looked similar for a long time, but now there is an opportunity to advance. Many things change when a diesel engine is replaced with an electric motor. For example, variable-speed control becomes more relevant, electric regeneration becomes possible, and the use of multiple prime movers becomes an attractive alternative. The noise from the hydraulic system will also be more noticeable when the diesel engine is gone. Furthermore, the introduction of batteries to the system makes the energy more valuable, since batteries are heavy and costly compared to a diesel tank. Therefore, it is commercially viable to invest in the hydraulic system. This thesis revolves around the heart of the hydraulic system, that also is the root of all evil. That is the pump. Traditionally, a pump has had either a fixed displacement or a continuously variable displacement. Here, the focus is on something in between, namely a pump with discrete displacement. The idea of discrete displacement is far from unique, but has not been investigated in detail in combination with variable speed before. In this thesis, a novel design for a quiet pump with discrete displacement is presented and analysed. The results show that discrete displacement is relevant from an energy perspective for machines working extensively at high pressure levels and with low flow rates, and that a few discrete values are enough to make a significant difference. However, for other cycles, the possible energy gains are very limited, but the discrete displacement can be a valuable feature if downsizing the electric machine is of interest.

Sustainable Energy Conversion for Electricity and Coproducts Comprehensive and a fundamental approach to the study of sustainable fuel conversion for the generation of electricity and for coproducing synthetic fuels and chemicals Both electricity and chemicals are critical to maintain our modern way of life; however, environmental impacts have to be factored in to sustain this type of lifestyle. Sustainable Energy Conversion for Electricity and Coproducts provides a unified, comprehensive, and a fundamental approach to the study of sustainable fuel conversion in order to generate electricity and optionally coproduce synthetic fuels and chemicals. The book starts with an introduction to energy systems and describes the various forms of energy sources: natural gas, petroleum, coal, biomass, and other renewables and nuclear. Their distribution is discussed in order to emphasize the uneven availability and finiteness of some of these resources. Each topic in the book is covered in sufficient detail from a theoretical and practical applications standpoint essential for engineers involved in the development of the modern power plant. Sustainable Energy Conversion for Electricity and Coproducts features the following: Discusses the impact of energy sources on the environment along with an introduction to the supply chain and life cycle analyses in order to emphasize the holistic approach required for sustainability. Not only are the emissions of criteria pollutants addressed but also the major greenhouse gas CO2 which is essential for the overall sustainability. Deals with underlying principles and their application to engineering including thermodynamics, fluid flow, and heat and mass transfer which form the foundation for the more technology specific chapters that follow. Details specific subjects within energy plants such as prime movers, systems engineering, Rankine cycle and the Brayton–Rankine combined cycle, and emerging technologies such as high-temperature membranes and fuel cells. Sustainable energy conversion is an extremely active field of research at this time. By covering the multidisciplinary fundamentals in sufficient depth, this book is largely self-contained suitable for the different engineering disciplines, as well as chemists working in this field of sustainable energy conversion.

Detailed coverage of the concepts of Hydraulics, Pneumatic, Control valves, Lever systems. Objective type questions included in each chapter. Detailed study of each and every topic in the chapter.

Handbook of Agricultural and Farm Machinery, Third Edition, is the essential reference for understanding the food industry, from farm machinery, to dairy processing, food storage facilities and the machinery that processes and packages foods. Effective and efficient food delivery systems are built around processes that maximize efforts while minimizing cost and time. This comprehensive reference is for engineers who design and build machinery and processing equipment, shipping containers, and packaging and storage equipment. It includes coverage of microwave vacuum applications in grain processing, cacao processing, fruit and vegetable processing, ohmic heating of meat, facility design, closures for glass containers, double seaming, and more. The book's chapters include an excellent overview of food engineering, but also regulation and safety information, machinery design for the various stages of food production, from tillage, to processing and packaging. Each chapter includes the state-of-the art in technology for each subject and numerous illustrations, tables and references to guide the reader through key concepts. - Describes the latest breakthroughs in food production machinery - Features new chapters on engineering properties of food materials, UAS applications, and microwave processing of foods - Provides efficient access to fundamental information and presents real-world applications - Includes design of machinery and facilities as well as theoretical bases for determining and predicting behavior of foods as they are handled and processed

This book comprises select peer-reviewed proceedings of the 9th International and 49th National Conference on Fluid Mechanics and Fluid Power (FMFP 2022). This book brings together scientific ideas and engineering solutions put forth by researchers and practitioners from academia and industry in the important and ubiquitous field of fluid mechanics. The contents of this book focus on fundamental issues and perspective in fluid mechanics, measurement techniques in fluid mechanics, computational fluid and gas dynamics, instability, transition and turbulence, fluid-structure interaction, multiphase flows, microfluidics, bio-inspired fluid mechanics, aerodynamics, turbomachinery, propulsion and power and other miscellaneous topics in the broad domain of fluid mechanics. This book is a useful reference to researchers and professionals working in the broad field of mechanics.

A COMPLETE GUIDE TO FLUID POWER PUMPS AND MOTORS Written by an expert in the field of fluid power, this book provides proven methods for analyzing, designing, and controlling high-performance axial-piston swash-plate type machinery. Fluid Power Pumps and Motors: Analysis, Design, and Control offers a comprehensive mechanical analysis of hydrostatic machines and presents meticulous design guidelines for machine components. Detailed diagrams and useful formulas are included throughout. Using the results and techniques employed in this practical resource will reduce product delivery lead-time and costs to increase overall efficiency. COVERAGE INCLUDES: Fluid properties | Fluid mechanics | Mechanical analysis Piston pressure | Steady-state results | Machine efficiency Designing a cylinder block, valve plate, piston, slipper, swash plate, and shaft | Displacement controlled pumps Pressure controlled pumps

Animal electricity -- A world of cells, molecules, and atoms -- The animal battery -- Hodgkin and Huxley before the war -- The mystery of nerve conduction explained -- Heart to heart -- Nerve to muscle -- Use it or lose it -- Broadcasting in the volume conductor -- The bionic century