The present disclosure is directed to a rotor blade that includes a shell defining an interior cavity. The rotor blade also includes exterior surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge. Each of the pressure side, the suction side, the leading edge, and the trailing edge extends between a tip and a root. The shell defines a span and a chord. A shear web is positioned in the interior cavity and coupled to the shell. The shear web includes a lattice structure.

A rotor blade for a wind turbine is provided, wherein the rotor blade includes serrations along at least a portion of the trailing edge section of the rotor blade. The serrations include a first tooth and at least a second tooth, and the first tooth is spaced apart from the second tooth. The area between the first tooth and the second tooth is at least partially filled with porous material such that generation of noise in the trailing edge section of the rotor blade is reduced. Furthermore, the embodiments relate to a wind turbine including at least one such a rotor blade.

An electrical generation system includes a plurality of wind generators. Each of the wind generators extends upwardly out of a body of water. Each of the wind generators is rotated by wind thereby facilitating each of the wind generators to generate electricity. A platform is slidably coupled to each of the wind generators. The platform travels upwardly and downwardly along the wind generator when the body of water raises and lowers. A plurality of motion units is operationally coupled between an associated one of the wind generator and the platform. Each of the motion units converts the upward and downward motion of the platform into electrical energy. A plurality of solar cells is coupled to the platform to convert sunlight into electricity.

A system for extracting potential and kinetic energy from sea waves is located in offshore constructions. The system includes at least one extraction unit with a supporting structure suspended from the construction, fixed at the top to a first platform and closed at the bottom by a base, and an energy-generating mechanism inside the supporting structure. The mechanism includes a half-submerged lower buoy connected to a closed-circuit pumping mechanism, a turbine and respective tanks connected to the pumping mechanism of the at least one unit and located on a second machine platform, (5.2) which is located above the first platform and fixed at the top to the marine construction. The supporting structure has an automatic adjustment mechanism for adjusting the height and waterline of the buoy.

The present invention features a flood damage prevention apparatus having a modular equilateral triangular prism enclosure with an interlocking system used to interlock and position additional modules of the apparatus during flood damage prevention deployment. The interlock system enables additional modules of the flood damage prevention apparatus to be locked in position. Each module may be protected from flood debris damage by way of a protective covering over each enclosure. The apparatus may be filled with fluid via a seal tight opening located on the surface of the enclosure which in turn may be closed using a seal tight apparatus.

An airfoil for a wind turbine apparatus includes an airfoil body having an arcuate shape extending between a first end and a second end and an airfoil support secured to a midpoint on the airfoil body and connected to the outer end of the support arm. The airfoil body includes a first portion adjacent to the first end and a second portion adjacent to the second end. The first end and the second end are secured to the support arm, and the body of the airfoil is comprised of material capable of flexing in response to wind pressure. The first and second portions of the airfoil body extend away from each other in an extended position and collapse together in a collapsed position, and the orientation of the airfoil relative to the direction of the wind causes the airfoil to move between the open and closed positions.

A wind driven electricity generator may have a tower with a set of stationary airfoils mounted thereon. Each airfoil may have a slot on a low pressure side of the airfoil. Air flow may through the slot relative to an inside of the airfoil. Air flowing through the airfoil may flow through the tower. The air flowing through the tower may turn a rotor (or propeller). The rotor may turn an electrical generator to generate electricity. Each airfoil may have a slot on a high pressure side. Air flowing through the slot on the high pressure side may turn the rotor.

The present invention features a flood damage prevention apparatus having a modular equilateral triangular prism enclosure with an interlocking system used to interlock and position additional modules of the apparatus during flood damage prevention deployment. The interlock system enables additional modules of the flood damage prevention apparatus to be locked in position. Each module may be protected from flood debris damage by way of a protective covering over each enclosure. The apparatus may be filled with fluid via a seal tight opening located on the surface of the enclosure which in turn may be closed using a seal tight apparatus.

A strake for a wind turbine tower is provided A strake for a wind turbine tower is disclosed, whereby the strake is realized as a detachable strake to be mounted to a wind turbine tower to reduce vortex induced vibrations. The strake includes an outer structure and the outer structure defines three sides that are interconnected by three angles, so that the strake includes a mainly triangular shape in its cross-cut perpendicular to its longitudinal direction. The strake includes at least one element that includes a contiguous cavity that is filled with a fluid.

A diffuser component for a gas turbine is provided, where a fluid flow in the direction of a combustion chamber of the gas turbine can be slowed down by the diffuser component, and a flow cross-section of the diffuser component, which is defined by a diffuser wall is widened to do so. The diffuser wall is at least locally braced, in that at least one stiffening element with a lattice-type structure is provided on the diffuser wall.