A kinetically driven machine for pressurizing water containing kinetically driven pressure pumps containing a front and rear part. The front part contains a pump mounted with thrust bearings, so the pump can rotate around itself. The pump is fitted with a front wing set, that can rotate the front part of the pressure pump. The rear part contains a gearbox that is mounted on the pump. The very gear is mounted on the drive shaft of the pump. A protective tube is fitted around the gearbox and attached with thrust bearings, so that the protective tube can rotate around the gearbox. The rear wing set, constructed like the front wing set, is mounted on the protective tube whereby the rear wing set can rotate the gear. The wing sets rotate in opposite directions, so the energy of the water is transformed into rotational energy that thereby drives the pump.

An apparatus comprising a meter device with a rotating component configured to rotate in response to a flowing fluid, an indexing unit coupled with the meter device and configured to process signals from the meter device resulting in values for measured parameters of a flowing fluid, and an energy harvester coupled to the pair of impellers, the energy harvester comprising a first harvesting unit and a second harvesting unit that co-operate to generate an electrical signal, the first harvesting unit configured to co-rotate with the pair of impellers, the second harvesting unit comprising a hollow, magnetic core disposed proximate the first harvesting unit.

Example implementations relate to a fan module. The fan module may include an outer impeller having a first plurality of radial blades arranged between an inner circumference of the outer impeller and an outer circumference of the outer impeller. The outer impeller may be rotatable about a first axis of rotation. The fan module may include an inner impeller having a second plurality of radial blades, the inner impeller disposed within the inner circumference of the outer impeller and rotatable about a second axis of rotation.

A floating type offshore wind power generation facility includes: a wind power generation unit which is installed to be horizontally rotatable about a vertical rotation center while being placed in an inclined state on an offshore structure or installed to be rotatable in two directions about a horizontal rotation center of the offshore structure, and converts rotational kinetic energy of blades caused by sea wind into electrical energy; and a driving unit which is connected to a lower end of the wind power generation unit in a state in which the driving unit is installed on the offshore structure, and changes a pivoting angle or a rotating angle of the wind power generation unit by generating driving power.

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.

Propellor system which is suitable for kinetic interaction with a fluid that flows unidirectionally through a channel, wherein the propellor system comprises a supporting body which is configured to be integrated within the channel in a fixed position, and a kinetic interaction system which is provided on the supporting body such that the kinetic interaction system extends in an interior area of the channel when the supporting body is integrated in the fixed position, wherein the kinetic interaction system is provided with cither at least one pair of rotatory blades, or a single rotatory blade, and wherein each rotatory blade performs a combinatory rotation.