Presently most electrical/electronic equipment (EEE) is not designed for recycling, let alone for circulation. Plastics in these products account for 20% of material use, and through better design, significant environmental and financial savings could be gained. Technological solutions and circular design opportunities already exist, but they haven’t been implemented yet. Some challenges, such as ease of disassembly, could be resolved through better communication and by sharing learnings across the value chain.Instead of WEEE, we should focus on developing CEEE: Circular Electrical and Electronic Equipment.The case examples of this report show how different stages of the lifecycle can be designed so that plastics circulation becomes possible and makes business sense. It is time to take a leap in material flow management and scale up these circular solutions across the industry.
In one complete volume, this essential reference presents an in-depth overview of the theoretical principles and techniques of electrical machine design. This timely new edition offers up-to-date theory and guidelines for the design of electrical machines, taking into account recent advances in permanent magnet machines as well as synchronous reluctance machines. New coverage includes: Brand new material on the ecological impact of the motors, covering the eco-design principles of rotating electrical machines An expanded section on the design of permanent magnet synchronous machines, now reporting on the design of tooth-coil, high-torque permanent magnet machines and their properties Large updates and new material on synchronous reluctance machines, air-gap inductance, losses in and resistivity of permanent magnets (PM), operating point of loaded PM circuit, PM machine design, and minimizing the losses in electrical machines> End-of-chapter exercises and new direct design examples with methods and solutions to real design problems> A supplementary website hosts two machine design examples created with MATHCAD: rotor surface magnet permanent magnet machine and squirrel cage induction machine calculations. Also a MATLAB code for optimizing the design of an induction motor is provided Outlining a step-by-step sequence of machine design, this book enables electrical machine designers to design rotating electrical machines. With a thorough treatment of all existing and emerging technologies in the field, it is a useful manual for professionals working in the diagnosis of electrical machines and drives. A rigorous introduction to the theoretical principles and techniques makes the book invaluable to senior electrical engineering students, postgraduates, researchers and university lecturers involved in electrical drives technology and electromechanical energy conversion.
In one complete volume, this essential reference presents an in-depth overview of the theoretical principles and techniques of electrical machine design. This timely new edition offers up-to-date theory and guidelines for the design of electrical machines, taking into account recent advances in permanent magnet machines as well as synchronous reluctance machines. New coverage includes: Brand new material on the ecological impact of the motors, covering the eco-design principles of rotating electrical machines An expanded section on the design of permanent magnet synchronous machines, now reporting on the design of tooth-coil, high-torque permanent magnet machines and their properties Large updates and new material on synchronous reluctance machines, air-gap inductance, losses in and resistivity of permanent magnets (PM), operating point of loaded PM circuit, PM machine design, and minimizing the losses in electrical machines> End-of-chapter exercises and new direct design examples with methods and solutions to real design problems> A supplementary website hosts two machine design examples created with MATHCAD: rotor surface magnet permanent magnet machine and squirrel cage induction machine calculations. Also a MATLAB code for optimizing the design of an induction motor is provided Outlining a step-by-step sequence of machine design, this book enables electrical machine designers to design rotating electrical machines. With a thorough treatment of all existing and emerging technologies in the field, it is a useful manual for professionals working in the diagnosis of electrical machines and drives. A rigorous introduction to the theoretical principles and techniques makes the book invaluable to senior electrical engineering students, postgraduates, researchers and university lecturers involved in electrical drives technology and electromechanical energy conversion.
Presently most electrical/electronic equipment (EEE) is not designed for recycling, let alone for circulation. Plastics in these products account for 20% of material use, and through better design, significant environmental and financial savings could be gained. Technological solutions and circular design opportunities already exist, but they haven’t been implemented yet. Some challenges, such as ease of disassembly, could be resolved through better communication and by sharing learnings across the value chain.Instead of WEEE, we should focus on developing CEEE: Circular Electrical and Electronic Equipment.The case examples of this report show how different stages of the lifecycle can be designed so that plastics circulation becomes possible and makes business sense. It is time to take a leap in material flow management and scale up these circular solutions across the industry.
Farming is the foundation of our food system. While the prerequisite for farming is a clean environment and a diverse nature, agriculture is currently the cause of major environmental problems, including greenhouse gas and nitrogen emissions. The challenge to protect our environment and feed the world sometimes seem insurmountable, but solutions might be just around the corner. This report describes two food system scenarios for Denmark, Finland, Norway and Sweden, where the majority of food is produced within the region using organic farming practices and where livestock is mainly fed on grass and by-products not suitable for human consumption. The results show that we could feed the projected Nordic population in 2030 on organic food, mostly grown within the region, while reducing the climate and nitrogen footprints of our food system.
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