A mechanical power system provides torque without using a heat engine where fossil-fuel engines have conventionally been used, by replacing the fossil-fuel burning engine with a rotary pneumatic motor and feeding pressure-regulated compressed gas to the rotary pneumatic motor. The rotary pneumatic motor can be used anywhere, and requires preferably compressed nitrogen in a non-liquid state. Automotive, marine and electrical generating applications are adaptable, and auxiliary power is available for emergencies where a supply of compressed gas has been exhausted. A screw-type compressor can be electrically powered to supply compressed gas to the pneumatic motor where tanks of compressed gas have been exhausted. An electrical generating power plant includes an array of solar panels for generating direct current (DC) and a DC/AC converter for converting the DC to alternating current (AC) and outputting a portion of the AC via a power plant output port to supply an AC load.

A system for providing access to a wireless communication network can include a plurality of renewable energy structures. Each renewable energy structure can include an electricity generation assembly, a telescoping support pole positioned to support the electricity generation assembly, and a wireless communication device configured to relay wireless communication signals between a host signal source and a client device. The electricity generation assembly can include a wind turbine assembly and/or a solar power structure. The wireless communication device can include a cellular telephone signal repeater and/or wireless internet equipment. Each structure can include a display, such as an advertisement, one or more benches, and/or a container. Each structure can optionally include a water purification system, one or more cameras, one or more lights, and/or one or more motion or voice sensors for activating or deactivating various components of the system. Each structure may be permanently installed or mobile.

A power plant (1) has an energy converter (3) for converting heat energy to another form of energy with use of a working fluid, and a heat exchanger (4) for rejecting heat from working fluid. A secondary circuit (6) provides coolant to the heat exchanger (4). The secondary circuit (6) includes a heat store (7) arranged to store coolant, a secondary heat exchanger (8), a coolant diverter (12), and a controller configured to route coolant from the working fluid heat exchanger (4) to the heat store (7) in order to reject heat to the store, or to the secondary heat exchanger (8). It chooses between these according to which provides more effective heat rejection from the coolant, and possible other factors. Typically, the controller uses the heat store during daytime and the secondary heat exchanger during night time. This means that heat working fluid is rejecting heat during day time at a temperature of the night time, thereby achieving improved plant efficiency.

An mechanical power system provides torque without using a heat engine where fossil-fuel engines have conventionally been used, by replacing the fossil-fuel burning engine with a rotary pneumatic motor and feeding pressure-regulated compressed gas to the rotary pneumatic motor. The rotary pneumatic motor can be used anywhere, and requires preferably compressed nitrogen in a non-liquid state. Automotive, marine and electrical generating applications are adaptable, and auxiliary power is available for emergencies where a supply of compressed gas has been exhausted. A screw-type compressor can be electrically powered to supply compressed gas to the pneumatic motor where tanks of compressed gas have been exhausted. An electrical generating power plant includes an array of solar panels for generating direct current (DC) and a DC/AC converter for converting the DC to alternating current (AC) and outputting a portion of the AC via a power plant output port to supply an AC load.

Cogeneration system for thermal and electric energy production from thermosolar energy, having a solar field connected to a power island, a piping system through which a heat transfer fluid flows is provided. The piping system has pipe collectors and a thermal insulating system. The system has at least a photovoltaic panel placed over the piping system, connected to at least a battery further connected to heating device placed at the pipe collectors configured to receive power from the battery and to heat the heat transfer fluid to a temperature suitable for the operation of the power island during periods of low or non-existent solar radiation. A cogeneration method is also provided, which has harvesting solar energy by photovoltaic panels, storing the energy in batteries and heating the heat transfer fluid by the heating device.

A method of operating a solar energy plant includes storing solar energy in a compressed air system of the plant by converting solar energy into electrical energy which operates a compressor of the compressed air system and produces compressed air and/or using solar energy as thermal energy that heats compressed air in the compressed air system of the plant.

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.

An apparatus including a photovoltaic panel; a first fluid container thermally attached to a bottom of the photovoltaic panel; and a temperature sensor for sensing temperature of a fluid inside the first fluid container is part of a sub-system for a power generation system using solar energy. The sub-system further includes a heating assembly, including a second fluid container, a second temperature sensor, and an electrical heating element. The second fluid container is fluidically connected to the first fluid container. The heating element is configured to heat the pre-heated fluid in the second fluid container to its vapor state. The sub-system additionally includes a turbine generator fluidically connected to the second fluid container to generate AC power from the vapor. A system employing a plurality of sub-systems and a method for using the sub-systems are also provided.

The present invention is a renewable energy utilization engine power plant comprising; a solar radiant energy collecting system, wherein the solar radiant heat collecting system comprises; a focusing apparatus for collecting solar radiant energy, and a light guide for guiding the solar radiant energy collected by the focusing apparatus to a heating chamber; a biomass processing system, wherein the biomass processing system generates thermal energy from the conversion of biomass material; a combustible fluid processing system, wherein the combustible fluid processing system generates thermal energy from the combustion of the combustible fluid within the heating chamber; and a closed-cycle thermodynamic based engine driven by the collection of the solar radiant energy and thermal energy, wherein the mechanical power generated by the closed-cycle thermodynamic based engine is converted to electrical energy.

A solar pumping system and a method for operating solar pumping system, the system comprises plurality of solar modules, at least one VFD comprising at least one convertor, at least one switching device connected to the solar module and the VFD and at least one AC motor connected to the output supply of the VFD. The switching device controls the supply of DC power transmitted to the VFD based on the input received from a controller of the VFD by varying the output voltage in accordance with the load requirement of the AC motor. The method comprising the steps of controlling the supply of voltage output of solar modules through the switching device as to provide adequate power to the solar pump based on the requirement of the motor in order to avoid tripping by increasing or decreasing the voltage output of the solar modules to a predetermined fraction of voltage for a predetermined fraction of time.