Berg ian (13 Ergebnisse)

Zustand: Good. Contemporary reprint. 34, [2] pages. Contains Introduction, Assessable Kinetic Energy of a Synchronous Generator, Accessible Stored Energy in A Wind Turbine, Use Cases, Financial Recovery, Conclusions, References, and Distribution. Also includes Figures, a Table, and Nomenclature. The primary focus of this paper is the use of stored rotational energy in the wind turbine without the need to spill wind--that is, the need to reduce output below its maximum output to gain the ability to increase its power output on demand. This idea has not been exploited to near its potential. Dr. Guttromson was the Manager, Energy Storage and Transmission Analysis at Sandia National Laboratories. This paper discusses the broad use of rotational kinetic energy stored in wind turbine rotors to supply services to the electrical power grid. The grid services are discussed in terms of zero-net-energy, which do not require a reduction in power output via pitch control (spill), but neither do they preclude doing so. The services discussed include zero-net-energy regulation, transient and small signal stability, and other frequency management services. The delivery of this energy requires a trade-off between the frequency and amplitude of power modulation and is limited, in some cases, by equipment ratings and the unresearched long-term mechanical effects on the turbine. As wind displaces synchronous generation, the grid's inertial storage is being reduced, but the amount of accessible kinetic energy in a wind turbine at rated speed is approximately 6 times greater than that of a generator with only a 0.12% loss in efficiency and 75 times greater at 10% loss. The potential flexibility of the wind's kinetic storage is also high. However, the true cost of providing grid services using wind turbines, which includes a potential increase in operations and maintenance costs, have not been compared to the value of the services themselves. Staple bound (upper left corner).…

Zustand: New. In English.

Zustand: New. In English.

Zustand: New. In English.

Zustand: New. This is a Brand-new US Edition. This Item may be shipped from US or any other country as we have multiple locations worldwide.

Pictorial wrappers. Zustand: Very Good +. First Edition. A sharp copy of this 1962 "Who's Who of the Britsh Traditional Jazz Scene". Clean and VG+ to Near Fine in its pictorial wrappers, with just a touch of very light chipping at the spine ends. 12mo, crisp, first-rate black-and-white photos throughout.…

paperback. Zustand: Good. Most items will be dispatched the same or the next working day. A copy that has been read but remains in clean condition. All of the pages are intact and the cover is intact and the spine may show signs of wear. The book may have minor markings which are not specifically mentioned.…

Paperback. Zustand: Brand New. reprint edition. 151 pages. 9.25x6.10x0.40 inches. In Stock.

Zustand: Used. pp. 142.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - This book is concerned with an investigation of severe school attendance problems. The purpose of this study is to integrate and synthesize related research carried out over the last ten years on this important social problem. The research describes the first use of randomly controlled trials by the courts in Great Britain and the psychiatric assessment of a non-clinical population of poor attenders. The approach provides new and interesting data and a good methodological example of the use of randomized experiments by the courts.…

paperback. Zustand: Good. Our good condition books are generally good for reading but not for gifting or collecting. They could have imperfections such as creasing, fanning, inscriptions, margin notes, yellowing, staining on edge or cover or pages, bumps, scuffs, etc etc (sometimes multiple of these). It's a wide category that encompasses anything that isn't almost-new down to anything that is slightly better than poor. We would NOT recommend gifting Good books - these should be considered reading copies. Our books are dispatched from a Yorkshire former cotton mill. We list via barcode/ISBN so please note that the images are stock images and may not be the exact copy you receive, furthermore the details about edition and year might not be accurate as many publishers reuse the same ISBN for multiple editions and as we simply scan a barcode or enter an ISBN we do not check the validity of the edition data when listing. If you're looking for an exact edition please don't order (at least not without checking with us first, although we don't always have time to check). We aim to dispatch prompty, the service used will depend on order value and book size. We can ship to most countries, see our shipping policies. Payment is via Abe only.…

Zustand: Used. pp. 142.

Hardcover. Zustand: gut. 1980. Out of School: Modern Perspectives in Truancy and School Refusal (Wiley Series on Studies in Child Psychiatry) In englischer Sprache. pages.