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An Investigation of PV Powered Brushless DC Motors for Solar Pumping. An autonomous and elegant integration of electric motor and pump for use with a solar domestic hot water system

Автор:   Lukas S.
мягкая обложка
144 страниц
2008 год
Издательство:   Книга по Требованию
Цена:
2413 руб
отсутсвует
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Описание:Typical solar domestic hot water systems use a liquid working fluid to transfer heat from the solar collectors to the hot water storage tank. This book presents the results of a detailed investigation of a unique design and integration of electric motor and pump to circulate the liquid working fluid. The motor's energy source is electricity that is generated from the sun by a photovoltaic module, creating an autonomous heating system. The design under review is a brushless DC motor that utilizes the magnet of a "mag-drive" pump as its rotor. This motor and pump technology, and integrated design results in both increased component utilization and increased reliability. The power switching devices of the motor perform commutation and maintain the photovoltaic module at the maximum power point. The pump magnet acts as the magnetic coupling and the motor rotor. Increased reliability is achieved through the use of solid state power electronics for commutation and the replacement of a dynamic pump seal with a static O-ring seal. This investigation reviews each major component's characteristics under a variety of conditions to identify appropriate design choices and areas for improvement.


Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка Orthomol Immun Junior Сила иммунитета на страже Вашего ребенка

2990 руб
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The World is Flat

To get all the savings, you needed to redesign enough buildings. You needed to have long, low, cheaper-to-build single-story factories, with small electric motors powering machines of all sizes. Only when there was a critical mass of experienced factory architects and electrical engineers and managers, who understood the complementarities among the electric motor, the redesign of the factory, and the redesign of the production line, did electrification really deliver the productivity breakthrough in manufacturing, David wrote. The same thing is happening today with the flattening of the world. Many of the ten flatteners have been around for years. But for the full flattening effects to be felt, we needed not only the ten flatteners to converge but also something else. We needed the emergence of a large cadre of managers, innovators, business consultants, business schools, designers, IT specialists, CEOs, and workers to get comfortable with, and develop, the sorts of horizontal collaboration and value-creation processes and habits that could take advantage of this new, flatter playing field ...»

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Подставка для колец Zoola "Кролик", хром.
Серия стильных и функциональных держателей для украшений от Umbra. Они предназначены как для хранения украшений, так и общего декора
590 руб
Раздел: Подставки для украшений
Подгузники Moony, 6-11 кг, экономичная упаковка, 62 штуки.
Максимально удобны и просты в применении. "Дышащая поверхность" подгузников обеспечивает доступ воздуха к коже ребенка, а
1423 руб
Раздел: 6-10 кг
Рамка деревянная со стеклом, формат 40х40 см, арт. 2N66.
Размер: 40х40 см. Цвет: клён. Материал: дерево.
404 руб
Раздел: Багетные рамы, для икон


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