Methods for installing a wind turbine blade on a wind turbine hub include hoisting the wind turbine blade towards the wind turbine hub; bringing the wind turbine blade and the wind turbine hub into contact through an adaptable resilient body such that the adaptable resilient body is compressed between the wind turbine blade and the wind turbine hub; reducing a dimension of the adaptable resilient body such that the wind turbine blade approaches the wind turbine hub; and mounting the wind turbine blade to the wind turbine hub. Also, assemblies for assisting in mounting the wind turbine blade to the wind turbine hub and adapted wind turbine hubs are provided.

A wind turbine comprising one or more wind turbine blades arranged to perform pivot movements between a minimum pivot angle and a maximum pivot angle, each wind turbine blade extending between an outer tip and an inner tip, wherein each wind turbine blade has an outer portion extending between the hinge and the outer tip and having a first length, and inner portion extending between the hinge and the inner tip and having a second length, wherein a coning angle of the blade carrying structure is larger than zero and/or a tilt angle of the rotor axis is larger than zero, and wherein a horizontal distance from the tower at a vertical position defined by a position of the hinge at tower passage to a point of connection between the blade carrying structure and the hub is equal to or less than the second length.

A modular, electricity generating apparatus comprises an elongate, central member comprising a first end and a second end; at least one foil disposed about the central member in fluid interacting relation thereto; the solar foil comprising an outer surface having photovoltaic properties; the first end and the second end dimensioned and configured to be connected to a connecting node; and, the elongate central member at least partially formed of an electrically conductive material and configured to conduct electricity from at least one of the connecting nodes to the other of the connecting nodes.

A heating deicing system for a blade and a control method thereof, a blade and a wind turbine are provided according to the present disclosure. The heating deicing system for the blade includes an isolating device, which is arranged in a blade cavity and divides a part of the blade cavity close to a leading edge of the blade into multiple sub-cavities sequentially distributed along a length direction of the blade, and each of the sub-cavities is provided with a heating device. The heating deicing system for the blade includes a controller, which is configured to separately control opening and closing of each set of multiple sets of heating devices in each sub-cavity to heat the multiple sub-cavities in response to a blade deicing instruction.

Invention relates to renewable Wind energy combining drag and lift forces into usable torque, having adjustable blades panels with sub blades. Its unique feature is to convert reverse drag into usable lift and combine the two forces in to one cohesive force. The system comprises output drive rotor arranged on a tower base, with its rotating arms with blade panel assemblies mounted rotatably. Each blade panel assembly comprises an auxiliary rotary shaft having sub-blade panels pivotable at one or more pivot points with primary or secondary control arrangements for blocking and/or allowing wind to pass through the blade panels partially or fully. The system further includes sensors to collect control information, coupled to Main Control Unit (MCU) and secondary control arrangements, configured to provide one or more energy forms.

An electric generating precipitation collection system comprising a collection tank, a plurality of pipes, a plurality of valves, a piston assembly, and an outlet. The system is configured to collect a liquid, direct the liquid through the pipes and valves to pressurize the liquid with the piston assembly, and eject the pressurized liquid at the outlet. The plurality of pipes and valves are arranged relative to the piston assembly so that a piston can pressurize the liquid in the pipe connected to the outlet. The system may further comprise a generator that converts the force of the pressurized liquid from the outlet into electricity. Further, a collection basin may be included in the system to collect liquid after passing through the generator.

A turbine, in particular for harvesting energy in flowing air or flowing water, is easily adaptable to different application conditions and facilitating a comparably high degree of efficiency. This is achieved in that the basic shape of the turbine is cylindrical and is provided with blades which are parallel to an axis of the turbine. The blades are pivotally arranged in joints on the outer circumference of at least one turbine wheel. The blades are substantially L-shaped. The longer limb of the blade is curved preferably in a manner corresponding to the radius of the turbine casing, and the shorter limb lies within the surface line of the turbine.

A wind turbine includes a blade having a leading edge, a trailing edge, and opposing first and second surfaces extending between the edges. A vortex generator pair includes a base attached to the first surface and first and second spaced apart fins extending outwardly from opposing portions of the base. The fins each have a leading edge, a trailing edge, a suction side and a pressure side. Each of the suction sides have a trailing half and a leading half.

Provided is a wind turbine blade for a wind turbine, the wind turbine blade including: a first element containing carbon fibers, the first element being enclosed by a first metallic cover so as to form a Faraday cage around the same; a second element containing carbon fibers, the second element being enclosed by a second metallic cover so as to form a Faraday cage around the same; and an electrical bond connecting the first metallic cover and the second metallic cover. Elements containing carbon fibers are protected against lightning strikes allowing that such elements are placed further towards the tip, thereby making the whole blade lighter and allowing to better tailor the shape of the tip.

A runner for a hydraulic turbine configured to reduce fish mortality. The runner includes a hub and a plurality of blades extending from the hub. Each blade includes a root connected to the hub and a tip opposite the root. Each blade further includes a leading edge opposite a trailing edge, and a ratio of a thickness of the leading edge to a diameter of the runner can range from about 0.06 to about 0.35. Further, each blade has a leading edge that is curved relative to a radial axis of the runner.