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148.75 sq. ft. Making the comparison work even more favorably to the ERDA-NASA unit, let us assume that the three propeller blades are not feathered and that each blade has an overall average width of 2 ft. This will transfer wind forces into a rotational movement of the entire vertical axis/rotor. Inside the support rod are rechargeable batteries, recharged by the generator and powering a standard 12V plug 133. When facing high wind conditions, extra cables 140 may be clipped from the outside of vane 101 at an angle to the rim of the vane support wheel to give additional strength and stability to the entire assembly. When the vane travels through the upwind cycle, the wind force acting on it can raise the vane even further, allowing more wind to spill through and further increasing turbine efficiency. Then, a control device 319 may activate the gearbox 312 to lower the weight 316 and run generator 318 when there is a need for stored power.
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The system further comprises at least one heavily weighted device that is configured and disposed to be raised with rotation of a wind turbine about its vertical shaft. The additional technologies involved, essentially water pump, water tank storage, and hydroelectric technologies are simple, well-known and cost-effective. Energy storage systems are well-known in the art, however. 18, several different sets of wind turbine vane systems 326 a, b can contribute to the process for hoisting weighted railroad cars 322 up the inclined track 321. And they may also have simpler gearbox arrangements, i.e. Such systems might be employed in areas where water sources or naturally occurring higher elevations are scarce or totally unavailable. Medicina natural para dolor muscular . And only the surfaces of rotor vanes moving downwind (roughly half of the vanes employed) will capture wind energy.
Nos. 4,494,007 and 7,094,017. Notable among these are opening and closing “clam-shell” designs, which open to catch the wind in a downwind course before closing to present less surface area during the rest of the rotation. The placement of that support is indicated in FIG. The support base 5 rotates freely about its vertical axis of rotation. Such devices are sometimes technically described as having their axis of rotation transverse to the flow of fluid medium. This decreases drag or air/wind resistance on the rear surfaces of these vanes, thus increasing efficiency. Thus, instead of the high energy-capturing efficiency assumed by the inventors of these gravity-flap devices, the more realistic expectation should be that the devices will have energy-capturing efficiencies that are much lower. Pat. No. 6,740,989. This can improve efficiency by decreasing the amplification effect of drag caused by wind forces acting on the vanes rotating upwind.
ERDA-NASA turbines would need to undergo significant redesign, greatly increasing blade area through much wider blades, in order to compete with the wind energy extraction capabilities of known Savonius-type turbines. OBJECTS OF THE INVENTION It is an object of the parent invention to provide a wind turbine which can: (a) capture wind energy more effectively and efficiently (as defined above) than other vertical-or horizontal-axis wind turbines; and (b) convert that energy into rotational energy for running an electrical generator. However, recent innovations in two Savonius-type wind turbines make possible a design that may be able to address many of the above objections. The propeller blades are feathered to prevent damage in high winds (i.e., above 60 mph). For several runs, sides were attached to the flat vanes to create relatively shallow boxes in front of each vane with two different depths, either one-third the length of the side of each vane or one-half the length of the side of each vane.
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The turbine is simple in design, durable even in extreme wind speeds, with almost no moving parts and therefore, cost-effective to build and maintain. For tall building systems, the pumped and stored water could be used to supply the fresh water needs of that building and additional water electrically heated for the same building’s hot water needs. In one instance, the lower reservoir could consist of artificial tidal pools, thus harnessing tidal energy in the first phase of electric generation. Adenomiosis dolor lumbar . The size of Darrieus-type turbines that could produce economically feasible capacities of electricity would have to be quite large posing other challenges to construction, cost-effectiveness and aesthetics. FIG. 12 is a front view, ground level schematic showing four large units similar to those shown in FIG. Many, especially those closely based on the original, are not self-starting. The question remains whether this bare, unexpressed intuition can be articulated in such a manner to show that it is not only plausible, but true.
Hence, the question arises why there has been such stubborn persistence in improving such devices. Higher tip speed ratios and rotation speeds allegedly make the latter turbines more suitable for the efficient production of electricity. The subsequent release of those raised devices can then be exploited for electricity production and/or energy storage through a series of gears and generators. Using lightweight and reinforced materials in a smaller design will greatly reduce stresses within the system and make possible the production of units able to withstand extreme wind forces. This will take the form of a thought experiment. As this is the essential energy transformation feature in all such designs, they will all be included in the category of “Savonius-type” designs for present discussion purposes.