A solar powered pump that maximizes available energy usage under variable insolation conditions is disclosed. It also permits the integration of parameters such as minimum flow control, set point operation, etc., without the use of additional sensors, thereby reducing the overall cost of the system. It comprises a solar array or other intermittent power source, a motor drive system that provides the power to an electric motor through a variable output power module and a flow loop comprising a pump coupled to the motor, valves and one or more sensors for flow control. The variable output power module uses data from at least one of the sensors to maximize power utilization by maximizing the flow rate in the fluid circuit/loop.

A portable pump system for use over a wellbore, the system having a utility trailer with a trailer bed and two wheels, a reel around which is wound a length of flexible pipe, an array of solar panels, a submersible pump, front outrigggers extending laterally from opposite sides of a front end of the trailer bed, and rear outriggers extending laterally from opposite sides of a rear end of the trailer bed. The reel is situated at a rear end of the trailer bed. The array of solar panels is situated in the front half of the trailer bed. The submersible pump is attached to a distal end of the flexible pipe. The array of solar panels is configured to supply power to the submersible pump. The reel is mechanically coupled to a sprocket system situated on top of the trailer bed and adjacent to the reel.

A thermal pump system energized by a daytime heating phase and a night time cooling phase associated with a naturally occurring environmental heating and cooling cycle includes a hydraulic fluid source, a thermal fluid expansion chamber having a fixed internal volume, and a hydraulic accumulator at least partially filled by a compressible gas. A first unidirectional flow valve connected to a first duct permits flow only out of the hydraulic fluid source during the night time cooling phase. A second unidirectional flow valve connected to a second duct permits flow only out of the thermal fluid expansion chamber upon expansion of the hydraulic fluid trapped in the thermal fluid expansion chamber due to heating during the daytime heating phase. The thermal fluid expansion chamber has a thermally conductive wall communicating thermal energy from the naturally occurring heating and cooling cycle to the hydraulic fluid trapped in the fixed internal volume.

A chemical delivery system connects to a chemical tank and includes a union connected to the tank outlet and providing an antirotation feature, in addition to threads, to prevent rotation of the assembly in response to asymmetric loads. A measuring tube alternately receives liquid from the tank and is isolated from the tank. While isolated from the tank, liquid is withdrawn from the tube by a pump under conditions allowing the pump to be calibrated. The assembly is cantilevered from the tank outlet and is of reduced length and weight producing a device which is not prone to overstress the tank outlet.

According to examples of the disclosure there is provided a heat-driven pumping system and a method of pumping. The heat-driven pumping system comprises a closed circuit for a first liquid. The closed circuit comprises a vaporization portion. The vaporization portion is configured to receive heat from an external source. The vaporization portion is configured to cause vaporization of first liquid within the vaporization portion. Vaporization of first liquid within the vaporization portion thereby increases an amount of gas in the closed circuit. The closed circuit is sealed such that the increase in the amount of gas increases a pressure exerted on the first liquid. The heat-driven pumping system comprises a transfer means. The transfer means is configured to convert the pressure exerted on the first liquid into a pumping force. The pumping force is transferred to a pumping vessel for pumping a second liquid.

Embodiments for groundwater and solar energy usage optimization for an agricultural region in an Internet of Things (IoT) computing environment by one or more processors are described. An amount of water required for an agricultural region and an amount of solar energy required to pump the water in a water pumping system for the agricultural region may be determined according to groundwater characteristics, weather data, weather forecasts, solar energy forecasts, historical water pumping data, crop and soil characteristics, agricultural management strategies, or a combination thereof.

Example embodiments relate to a water feature. The water feature includes a vessel and an electrically powered submersible pump within the vessel, an outlet fluidly connected to the pump, a solar panel, and a battery. The water feature also includes a controller, a processor, and a non-transitory computer-readable medium which stores a set of program instructions which cause the water feature to perform operations. The operations include receiving a predetermined time to operate the pump on the battery. Based on the predetermined time, the operations include allocating a percent of a total electrical power generated by the solar panel to charge the battery and a remainder of the total electrical power generated to operate the pump. The operations additionally include determining that the battery has reached a threshold power level associated with the predetermined time to operate the pump and allocating the total electrical power generated to operate the pump.

A pumped storage hydropower apparatus includes a housing and at least one pump disposed within the housing. The at least one pump is configured to operate in a first mode of operation or a second mode of operation based on an operation condition including at least one of a time or a price of electrical power from a remote electrical power source. In the first mode of operation, the at least one pump receives a first flow of water from a first water storage unit, transports the first flow to a second water storage unit, and generates electrical power for transmission to the remote electrical power source. In the second mode of operation, the at least one pump receives a second flow of water from the second water storage unit, and transports the second flow to the first water storage unit using electrical power from the remote electrical power source.

A portable solar powered water pumping system having plumbing parts manually coupled together to provide a water tight interference fit for allowing the pump to be assembled and disassembled without tools. The system includes a solar powered pump having an intake chamber and an outflow nozzle. The system also includes a discharge output assembly coupled to the outflow nozzle assembly for directing the water flow to a location selected by a user. The system further includes at least one solar powered connecter for connecting to at least one solar panel to directly power the pump with DC power generated from the solar panel.

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.