Berg josh (11 risultati)

Paperback or Softback. Condizione: New. In the Weeds. Book.

Condizione: New.

Condizione: New.

Hardcover. Condizione: New. *NEW* pictorial hardcover. Fresh from a distributor with no price tags and no remainder marks.

Condizione: 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). …

Taschenbuch. Condizione: Neu. Neuware - Eric is a regular teenager. His existence is filled with drinking, apathy and awkwardness. One fateful night his life is inexorably altered as he accidentally tumbles through a hole in space-time only to emerge into a fantastical world beyond his wildest imaginings. Suddenly Eric finds himself in the company of an eccentric Goblin while being hunted by scheming corporations, insane assassins, ravenous demons and dangerous mutations. Meanwhile within the towering confines of Tirileth city, known by locals as 'The Tier', the mercenary Xanshudan tackles daring missions with the help of his team of diverse professionals. Hired to protect this gangling teen, Xan and his team quickly find that there is much more to Eric than they first thought. Now Xan and his gang of unlikely heroes must race against time in a desperate attempt to search for the answers that will unravel the mysteries of Eric's fate and hopefully lead him back home before it's too late. 'The Tier' is set within the world of Errant realms. A discordant futuristic place dotted with fantastical mega-cities seething with diverse and enigmatic beings, road-warrior brigands, powerful magics, volatile deities, fantastic monsters and conniving corporations.…

Condizione: New.

71 pp.; 38.3 x 27.4 cm.; loose leaves; black-and-white; edition size unknown; unsigned and unnumbered; offset-printed; September 24-30, 1980 issue of SoHo News. Issue edited by Josh Friedman. Cover stories include: "Film Special: Bringing Godard Back Home," an interview with Jean-Luc Godard by Jonathan Rosenbaum; "Jurasas: Exile on B'Way," by Spencer Golub; "Slow Death at Sydenham," by Tim Weiner; "Your Own TV Station for $30,000," by Bob Brewin; "Underground Upstate: Viva's Tales of Hoffman," Viva on Johanna Lawrenson and Abbie Hoffman. Art reporting includes "Pfaff Made Pfathomable," John Perreault on Judy Pfaff; "Art Reviews," William Zimmer on Italo Scanga, Frank Kolbert, Ed McGowin, and Peter Berg and "The Nude Stripped Bare: Irving Penn," by Andy Grundberg. Cover photograph by Sonia Moskowitz. Good. Folded in two. Moderate yellowing of paper from age and overall bumping and tearing of page edges. 7.5 cm. dog-ear to lower right corner of recto. Multiple 5 mm. tears to spine edge and to edges of page 35-38.…

Paperback / softback. Condizione: New. This item is printed on demand. New copy - Usually dispatched within 5-9 working days.

Paperback. Condizione: Brand New. 74 pages. 9.00x6.00x0.17 inches. This item is printed on demand.

Paperback / softback. Condizione: New. This item is printed on demand. New copy - Usually dispatched within 5-9 working days.