The present invention is related in general to air circulators, and in particular, to an air circulator with a vein control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical veins that are attached to the outlet of a tower fan. According to a preferred embodiment, the veins are pivotally mounted in such a way that by turning a knob, the veins can either be directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between.

A shear web foot for a wind turbine blade is described. The shear web foot extends longitudinally and comprises a base for attaching to an internal surface of the blade and first and second side walls. The side walls extend respectively from opposite longitudinal sides of the base. At least part of each side wall is inclined relative to the base and inclined towards the other side wall. A web-foot interior is defined at least in part by the base and the first and second side walls. One or more internal walls are located in the web-foot interior. The one or more internal walls extend between the base and the first and/or second side walls and are spaced apart from the first and second side walls to define a plurality of chambers within the web-foot interior.

The present invention is related in general to air circulators, and in particular, to an air circulator with a vein control system to direct and adjust airflow patterns. According to an exemplary embodiment, the present invention provides adjustable, vertical veins that are attached to the outlet of a tower fan. According to a preferred embodiment, the veins are pivotally mounted in such a way that by turning a knob, the veins can either be directed into a focused air-flow pattern or adjusted to a divergent air-flow pattern, or at any setting in between.

A turbine blade is provided. The turbine blade may include: a cooling passage configured to be defined by a partition wall which partitions an internal area of the turbine blade; and an inlet passage extending from a root part of the turbine blade toward a platform part of the turbine blade and configured to supply cooling air into the cooling passage, wherein an inclined part having a diameter reduced from the root part toward the platform part is formed in the inlet passage.

The present invention relates to a turbine injector comprising an annular ring extending around a longitudinal axis and having a radially outer edge and a radially inner edge. The crown has a plurality of channels for fluidly connecting the radially outer edge to the radially inner edge, each channel extending in a radial plane of the ring and having an inlet opening near the outer edge and an outlet opening near the radially inner edge, the orientation of each channel varying progressively according to a tangential component between the inlet section of the inlet opening and the outlet section of the outlet opening.

A high performance hybrid turbine is provided which has an impeller towards which a fluid flow of water, air, or other fluid is conveyed for rotation of the impeller around an axis of rotation. The impeller exploits the thrusts that the fluid flow exerts on the elements constituting the impeller and the thrusts generated by a certain number of airfoils provided inside the elements of the impeller. The high performance hybrid turbine, if used as a wind turbine, can operate at much higher wind speeds than conventional wind turbines.

The wind collection apparatus has a wind collecting section for collecting wind taken from a front surface side into a wind outlet. The wind outlet is provided below an upper end of the front surface of the wind collecting section. The wind collecting section is configured such that a cross section of wind flow passage becomes smaller from the front surface side toward the rear surface side. The wind collecting section has a pair of left and right side wall portions, and an upper wall portion bridged between the pair of side wall portions. A plurality of support columns are arranged to penetrate the upper wall portion. The upper end portion of each support column and the upper wall portion are connected to each other by cables, and upper wall portion is suspended by the cables.

The invention relates to a method of harvesting overhead wind energy with greater efficiency and being better in terms of manufacturing technology and equipment installation. In particular, the invention relates to a method of harvesting overhead wind energy with an equipment system for indirectly catching wind, the method comprises: catching overhead wind; guiding the caught overhead wind downwards; converting the energy of the caught wind into mechanical work to rotate one or more generators on the ground.

The cost of the equipment system for indirectly catching wind is much cheaper than those of the traditional wind electricity pylon.

The present invention provides a pressure controlled wind turbine enhancement system and a method of enhancing the airflow past a wind turbine, the enhancement system including a two part conical nozzle to be located upwind or upstream of a turbine in order to augment the natural flow of air past blades of the turbine in a manner which produces increased power output from the turbine.

An airfoil includes a first end opposite a second end in a spanwise direction. A leading edge extends in the spanwise direction from the first end to the second end and a trailing edge extends in the spanwise direction from the first end to the second end and aft of the leading edge in a chordwise direction. A suction surface extends from the leading edge to the trailing edge and a pressure surface extends from the leading edge to the trailing edge. The airfoil further includes at least one channel with an inlet on a surface of the leading edge and an outlet aft of the leading edge.