The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may be applicable to, for example, inhibiting or preventing growth formation or fouling of structures in liquid environments. Other embodiments may be applicable to, for example, an energy storage device or a tidal power energy generation system.

The above patent application describes a method for the direct unlimited use of excess electricity that occurs during periods of decline in consumption of the electrical network. Until now, excess electricity is used on a limited scale by its preliminary accumulation and storage, until a period of growth in electricity consumption begins. The proposed method includes the conversion of excess electricity directly, in unlimited volumes, into other types of energy, for example, into thermal energy or into the chemical energy of artificially produced hydrogen. Further, the converted energy enters directly, without the need for accumulation and storage, into the furnaces of boilers, gas turbines, or other heat-power equipment, partially or completely replacing the main fuel. This method allows savings of at least 250 billion US dollars annually in the USA and Canada alone. On a global scale, the annual savings will be at least $1.5 trillion.

The invention relates to an electrical energy storage system for injecting and withdrawing electrical energy, comprising at least the following components: a) an electrical connection unit for connecting the energy storage system to an electrical energy supply grid, b) a first energy converter that is electrically connected to the electrical connection unit and is configured to convert electrical energy supplied via the energy supply grid into hydraulic energy that is provided via a hydraulic medium located in the energy storage system, c) a second energy converter that is hydraulically connected to the first energy converter and is configured to convert the hydraulic energy provided by the first energy converter into gas pressure energy that is provided via a pressurized gas located in the energy storage system, d) a pressurized gas storage unit that is connected to the second energy converter via a pressurized gas connection and is configured to store the gas pressure energy provided by the second energy converter in the form of compressed pressurized gas.

The invention also relates to a method for injecting and withdrawing electrical energy by way of such energy storage system.

A renewable energy and waste heat harvesting system is disclosed. The system includes an accumulator unit having a high pressure accumulator and a low pressure accumulator. At least one piston is mounted for reciprocation in the high pressure accumulator. The accumulator unit is configured to receive, store, and transfer energy from the hydraulic fluid to the energy storage media. The system collects energy from a renewable energy source and transfers the collected energy using the pressurized hydraulic fluid. The system further includes one or more rotational directional control valves, in which at least one rotational directional control valve is positioned on each side of the accumulator unit. Each rotational directional control valve includes multiple ports. The system also includes one or more variable displacement hydraulic rotational units. At least one variable displacement hydraulic rotational unit is positioned adjacent each of the rotational directional control valves.

The present invention belongs to the field of energy harvesting, and in particular relates to an ocean wave energy collector based on magnetic force and triboelectric effect. The ocean wave energy collector includes a plurality of protective shells connected by flexible metal spring modules; a magnetic oscillation system is installed in each protective shell in a matched mode and includes an electric energy output module and a plurality of magnetic oscillators, and each magnetic oscillator includes a first supporting body, a dielectric capsule, first magnet units, second magnet units, a supporting shell, and an electrode unit.

In one aspect, a wireless transceiver is used to wirelessly connect various electrohydraulic components in a hydraulic system. In another aspect, a self-powered wireless hydraulic system includes a harvesting device for converting hydraulic energy into electrical energy. The electrical energy generated by the harvesting device can be used to power one or more electrohydraulic components and wireless transceivers. In another aspect, a self-powered wireless hydraulic system also includes a flow control device powered by the harvesting device for actively controlling the hydraulic flow through the harvesting device.

Disclosed techniques include enabling controlled refrigeration and liquefaction and energy management. A liquid is pumped into a closed chamber to compress a vapor. Pressure is increased in the closed chamber by pumping additional liquid into the closed chamber. The increasing pressure enables assimilation of the vapor into the liquid. The heat of compression is removed from the vapor simultaneously with compression. The liquid containing the vapor that was assimilated is withdrawn from the chamber. It is flashed to release at least a portion of the vapor that was assimilated. The flashing results in absorbing a latent heat of vaporization from surfaces in thermal contact with the liquid. A first and second heating/cooling circuit are controlled. Gas within the first heating/cooling circuit is cooled and compressed using a liquid piston. A gas is warmed within the second heating/cooling circuit, and expansion is accomplished using a liquid piston.

Disclosed is an apparatus that adapts the rate of its computational work to match the availability of energy harvested from a stochastic energy source; and, with respect to some types of energy harvesting, regulates the rate of energy capture, the rate of energy conversion, and the rate of consumption of stored potential energy, through its alteration, regulation, and/or adjustment, of that same computational work load.

The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may be applicable to, for example, inhibiting or preventing growth formation or fouling of structures in liquid environments. Other embodiments may be applicable to, for example, an energy storage device or a tidal power energy generation system.

The present invention relates to systems and methods for pumping or removing a fluid from a region within or on top of or in contact with a water or liquid body and applications for said systems and methods. Some embodiments may be applicable to, for example, inhibiting or preventing growth formation or fouling of structures in liquid environments. Other embodiments may be applicable to, for example, an energy storage device or a tidal power energy generation system.