In one embodiment, a concentrated solar power system includes a solar tower, multiple solar receivers mounted to the solar tower at different vertical elevations, and a plurality of heliostats provided on the ground within a heliostat field, wherein each heliostat is configured to concentrate solar radiation on any of the solar receivers mounted to the solar tower.

In one embodiment, a concentrated solar power system includes a solar tower, multiple solar receivers mounted to the solar tower at different vertical elevations, and a plurality of heliostats provided on the ground within a heliostat field, wherein each heliostat is configured to concentrate solar radiation on any of the solar receivers mounted to the solar tower.

The present disclosure first uses a pumping device to retrieve water using an internal power source from a water source. Then, in accordance with a wind parameter and a solar parameter, wind-powered and solar-powered pumping devices are selectively engaged to replace the pumping device. The water is stored in the water storage device in a higher place. As the water runs through an inlet pipe, it is pressurized to drive a first hydraulic generation device. Then the water's potential energy is used to drive a second hydraulic generation device as the water is recycled to the water source. The produced electricity is delivered to the pumping device and, if any remaining, then to a light device for illumination.

The present disclosure first uses a pumping device to retrieve water using an internal power source from a water source. Then, in accordance with a wind parameter and a solar parameter, wind-powered and solar-powered pumping devices are selectively engaged to replace the pumping device. The water is stored in the water storage device in a higher place. As the water runs through an inlet pipe, it is pressurized to drive a first hydraulic generation device. Then the water's potential energy is used to drive a second hydraulic generation device as the water is recycled to the water source. The produced electricity is delivered to the pumping device and, if any remaining, then to a light device for illumination.

A turbine (1) with flow diverter (2) comprises a support frame (25) adapted to be anchored to a fixed or movable structure, an impeller (3) rotatably mounted about a rotation axis (R) to the support frame (25) and having a front inlet section for the flow and a plurality of blades (4, 4′, 4″, . . . ) adapted to move continuously upon the rotation produced by the flow between a pushing position and an advancing position in correspondence of the front section, a main flow diverter (2) adapted to be anchored to the support frame (25) and having a peripheral wall (7) adapted to at least partially blind the front section with respect to the flow auxiliary diverter (13) extending from a first section (14) facing one or more blades (4′) in the advancing position to a second section (15) facing one or more blades (4) in pushing position. The auxiliary diverter (13) comprises a plurality of substantially curvilinear conduits (16) in reciprocal side by side position along a substantially radial direction, each conduit (16) having a first opened end (16′) facing the blades (4′) in the advancing position and a second opened. end (16″, 16′″) placed in correspondence of the conveying duet (8).

A system for extracting work from the expansion of a working fluid includes a vessel having at least a portion of the working fluid, a heating device in thermal communication with the portion of the working fluid in the vessel for heating the portion of the working fluid in the vessel and expanding the working fluid, and a conversion tool. The conversion tool is in fluid communication with the vessel and is configured to receive working fluid from the vessel when the working fluid expands. The conversion tool is further configured to extract work from the expanded working fluid.

A system for extracting work from the expansion of a working fluid includes a vessel having at least a portion of the working fluid, a heating device in thermal communication with the portion of the working fluid in the vessel for heating the portion of the working fluid in the vessel and expanding the working fluid, and a conversion tool. The conversion tool is in fluid communication with the vessel and is configured to receive working fluid from the vessel when the working fluid expands. The conversion tool is further configured to extract work from the expanded working fluid.

A system for extracting work from the expansion of a working fluid includes a vessel having at least a portion of the working fluid, a heating device in thermal communication with the portion of the working fluid in the vessel for heating the portion of the working fluid in the vessel and expanding the working fluid, and a conversion tool. The conversion tool is in fluid communication with the vessel and is configured to receive working fluid from the vessel when the working fluid expands. The conversion tool is further configured to extract work from the expanded working fluid.

In an example, an engine includes a thermal expansion unit comprising expansion material that expands in response to a temperature increase of the expansion material and contracts in response to a temperature decrease of the expansion material. The engine includes a structure comprising a heat receiving region, wherein at least a portion of the thermal expansion unit is disposed within the structure. The heat receiving region is configured to transfer thermal energy from a source of thermal energy to the expansion material through a first thermal energy transference path. The transfer of thermal energy to the thermal expansion unit causes expansion of the expansion material within the thermal expansion unit. The expansion of the expansion material causes an increase in length of the thermal expansion unit. The increase in length of the thermal expansion unit causes establishment of a second thermal energy transference path through which thermal energy is transferred from the expansion material to outside the thermal expansion unit.

A system for extracting work from the expansion of a working fluid includes a vessel having at least a portion of the working fluid, a heating device in thermal communication with the portion of the working fluid in the vessel for heating the portion of the working fluid in the vessel and expanding the working fluid, and a conversion tool. The conversion tool is in fluid communication with the vessel and is configured to receive working fluid from the vessel when the working fluid expands. The conversion tool is further configured to extract work from the expanded working fluid.