Preliminary wind-chamber tests and computer modeling have shown that preferred embodiments the disclosed technology is expected to be comparable if not superior in performance to current state-of-the-art wind turbines of similar size – at approximately half the system cost. This is an agreement of 88 percent, and helps to justify the theoretical deduction as a viable means of scaling up the measured values for a larger-scale model, especially because the theory is offset on the conservative side and would predict a lower power output than can reasonably be expected.
Theoretical calculations based on preferred embodiments predict that a Wind Fin measuring 20 feet tall by 3 feet wide on a thirty foot mast in a 20 mph wind would generate slightly over IkW of electricity. The second theoretical Wind Fin system designed for modeling consisted of a fiberglass fin measuring 20 ft.
Dolores Musculares Causas
Preferred embodiments of the invention exploit the kinetic energy of an aerodynamic, oscillating apparatus, rather than relying on a rotating wind turbine. For a rotating motion of the embodiment shown in Figs. Preliminary wind-chamber tests and computer modeling of preferred embodiments of the invention have shown that it is comparable if not superior in performance to current state-of-the- art wind turbines of similar size – at approximately half the system cost. In preferred embodiments, the momentum of wing structure 12 movement affects a shift in the position of flap 22, which is shown over a complete oscillation in Fig.
In preferred embodiments, the invention comprises three major components: (1) a mast, which both anchors the structure and also serves as a pivot axis for the vertical, hinged wind fin; the mast can be guyed for stability or can be free standing; (2) a vertical, hinged fin, attached to the mast by a sleeve, which allows the fin to swing freely about the mast; these aerodynamic wing elements automatically orient downwind and respond readily to wind with an oscillating motion; the fin’s oscillating action is self-sustaining in the wind and needs no mechanical assist and is self-starting; fins can be constructed in several different ways; for example, they can be built-up like an aircraft wing with a skin made of fiberglass or other durable membrane that conforms to symmetrical wing ribs, or constructed of a rigid material within a frame; because these fins are not subject to the enormous, alternating, bending stresses of wind turbine blades, they can be less complex and much less costly to manufacture; fins also can easily be designed in many different color schemes and patterns, making them more visually appealing than wind turbines and able to fit less obtrusively into both built and natural environments; and (3) a power- extraction system that is attached to the mast so that it is not affected by the wind direction; the reciprocating motion of the hinged fin drives a concentric shaft that turns two stacked, opposing, overrunning clutches; these clutches convert oscillating motion to continuous motion and, in turn, drive a bevel gear that turns a generator, producing electricity.
- Lumbamed® sacro Órtesis pélvica con almohadillas de masaje
- Tumores óseos,
- Pasar la aspiradora por la casa
- Estenosis espinal. Esta condición hace que el canal espinal se estreche
- La toracocentesis es por lo general un procedimiento seguro
In preferred embodiments, system 10 generates power without posing the danger to birds that a traditional windmill poses. 1,002 watts. The estimated year 2005 labor and materials cost related to the construction of a prototype 20 ft. Figs. 14A through 14D are plan views of a preferred embodiment of the invention illustrating how the gearing arrangement constrains the form of the invention and transfers forces. In another preferred embodiment, the invention is an apparatus for extracting power from a moving fluid stream, said apparatus comprising: a mast assembly; a leading airfoil portion (e.g., leading form) having a leading edge that is connected to said mast assembly and a following edge; a plurality of following airfoil portions (e.g., following forms), each of which has a front edge and a rear edge, the front edge of a first of said following airfoil portions being pivotably attached to the following edge of said leading airfoil portion, and the front edge of each other following airfoil portion being pivotably attached to the rear end of another following airfoil portion; and a power take-off mechanism that is driven either directly by a pivoting movement of said mast and said first airfoil portion or by a pivoting movement of said first airfoil portion with said mast remaining stationary; wherein said airfoil portions are configured to, in combination, present airfoil surfaces to the moving fluid stream that generate lift first in one direction that is transverse the direction of movement of the moving stream and then in another direction that is opposite said one direction during an oscillation of said airfoil portions in the moving fluid stream.