A logistics system for a multirotor wind turbine (1) is disclosed. The multirotor wind turbine (1) comprises two or more energy generating units (4), each mounted on an arm (3) extending from a tower (2) of the multirotor wind turbine (1). A transport system (14, 30, 31, 32, 33, 34, 36) interconnects a lower interior part of the tower (2) with each of the energy generating units (4). A plurality of transport containers (15) is connectable to the transport system (14, 30, 31, 32, 33, 34, 36) and configured to hold equipment (26) to be transported. A control unit is configured to receive information regarding contents and position of the transport containers (15), and to plan transport of the transport containers (15) via the transport system (14, 30, 31, 32, 33, 34, 36), based on a service plan for the multirotor wind turbine (1).

A logistics system for a multirotor wind turbine (1) is disclosed. The multirotor wind turbine (1) comprises two or more energy generating units (4), each mounted on an arm (3) extending from a tower (2) of the multirotor wind turbine (1). A transport system (14, 30, 31, 32, 33, 34, 36) interconnects a lower interior part of the tower (2) with each of the energy generating units (4). A plurality of transport containers (15) is connectable to the transport system (14, 30, 31, 32, 33, 34, 36) and configured to hold equipment (26) to be transported. A control unit is configured to receive information regarding contents and position of the transport containers (15), and to plan transport of the transport containers (15) via the transport system (14, 30, 31, 32, 33, 34, 36), based on a service plan for the multirotor wind turbine (1).

A wind turbine can include a first rotating ring and a second rotating ring. A first plurality of airfoils is pivotally secured between an interior rim and an exterior rim of the first rotating ring and disposed at a first angle of attack. A second plurality of airfoils is pivotally secured between an interior rim and an exterior rim of the second rotating ring and disposed at a second angle of attack. A generator is mounted between the first rotating ring and the second rotating ring and generates electricity in response to the first plurality of airfoils capturing the wind with the first angle of attack such that the first rotating ring rotates in a first direction and the second plurality of airfoils captures the wind with the second angle of attack such that the second rotating rings rotate in an opposite direction from the first rotating ring.

The invention is on the one hand a power generating apparatus exploiting wind energy, comprising a body (10), a main rotor unit (12) comprising a front rotating part being fitted with front blades being adjustable at an angle, and a rear rotating part being fitted with rear blades adjustable at an angle, said front rotating part and rear rotating part have rotation axes aligned parallel to each other, preferably being coincident with each other, a blade adjustment unit being adapted for adjusting of the front blades and the rear blades to rotate in opposite directions, a cable (18) enabling kiting of the body (10), a generator unit adapted for generating electric power from rotation of the front rotating part and the rear rotating part, and a wire adapted for conducting electric power generated by the generator unit, and the main rotor unit (12) is arranged in an opening (11) of and coupled to the body (10), and the main rotor unit (12) comprises blades being turnable into a covering position covering at least partly the opening (11). On the other hand, the invention is a method for operating the power generating apparatus.

The invention is on the one hand a power generating apparatus exploiting wind energy, comprising a body (10), a main rotor unit (12) comprising a front rotating part being fitted with front blades being adjustable at an angle, and a rear rotating part being fitted with rear blades adjustable at an angle, said front rotating part and rear rotating part have rotation axes aligned parallel to each other, preferably being coincident with each other, a blade adjustment unit being adapted for adjusting of the front blades and the rear blades to rotate in opposite directions, a cable (18) enabling kiting of the body (10), a generator unit adapted for generating electric power from rotation of the front rotating part and the rear rotating part, and a wire adapted for conducting electric power generated by the generator unit, and the main rotor unit (12) is arranged in an opening (11) of and coupled to the body (10), and the main rotor unit (12) comprises blades being turnable into a covering position covering at least partly the opening (11). On the other hand, the invention is a method for operating the power generating apparatus.

A dual rotor axis wind turbine that converts renewable energy into electrical energy. The dual rotor wind turbine addresses the counter productivity problem found in dual rotors wind turbines, which occurs due to adverse effects to the downwind rotor due to lying in the wake of the upwind rotor. The dual rotors lie on an axis with a relative angular displacement between the blades of such rotors, wherein the relative angular displacement is adjustable in order for the downwind rotor to avoid the counterproductive wake of the first rotor.

An inverted funnel-shaped columnar tower (115) includes a window region (120), a heat absorbing surface (130), an air entrance (116) and exit (117). Solar energy passes through the window region and heats the heat absorbing surface. A plurality of fans (145), each connected to a generator (150), are suspended within the tower and extract energy from convectively rising air, generating electricity. A fan (160) outside the tower intercepts wind and turns an internal fan (145′) that aids the convective flow, providing a self-starting feature. A plurality of rotors (100) with wings (705) are connected in groups to generators (725) and all are arranged adjacent the tower. The rotors intercept wind energy and deliver it to the generators for conversion to electricity. The rotors include a flap (800) that predetermines the direction of rotation of the rotor, providing a second self-starting feature. The convection and wind capture functions operate independently.

This disclosure provides an apparatus, system and method for an energy capturing pod (ECP). The ECP includes a specialized funnel shell, a first turbine, and a second turbine. The specialized funnel shell is designed to accelerate in coming wind speed and is structured with a first choke point and a second choke point for wind. The first turbine is located at the first choke point. The second turbine is located at the second choke point.

The invention relates to a device for converting wind energy into electrical energy. The device is comprised of four legs. One of the legs of the frame has an external recess for mounting on a roof ridge. The frame has a horizontally positioned rotor with a hub and at least two vanes and a generator functionally coupled to the rotor arranged in a central area of the opening formed by the frame. The axis of rotation of the rotor is perpendicular to a plane extending through the legs of the frame.

A system for using solar and wind energy for electricity generation and thermal regulation. The system may include a high altitude wind turbine, which may generate electric power and conduct cold to the ground and the rest of the system. The cold may be conducted to a crystallization tank, which may also include an input for heat, for example from solar energy. Cold and heat from the crystallization tank may then be stored or used to heat or cool one or more buildings. Generated electric power may be used in conjunction with or separately from the heating/cooling system.