A method of improving natural gas recovery from a subterranean hydrocarbon reservoir includes at least one renewable energy source that is electrically coupled with a heat conducting element. The heat conducting element is positioned in a perforated section of a wellbore that traverses into the subterranean hydrocarbon reservoir. A temperature of the subterranean hydrocarbon reservoir is maintained above a cricondentherm temperature so that liquid condensation may be prevented at a final production time. In order to maintain the temperature within a required temperature range, an internal temperature, an internal pressure, and a set of reservoir properties are monitored and then utilized to plot a phase diagram that can be used to detect liquid condensation. If liquid condensation is detected, an electrical output of the renewable energy source is adjusted in order to control the temperature of the subterranean hydrocarbon reservoir at a producing end of a production tubing.

Provided is a power-generating apparatus comprising a box having a cavity and a lid, one or more solar panels disposed on the box, and one or more battery packs disposed within the cavity, where the one or more solar panels are configured to charge the one or more battery packs. The apparatus may further comprise a turbine configured to charge the one or more battery packs.

A method for coordinated control of a renewable electrical energy source (RES) and an electrical energy storage (EES) device utilizes a time-dependent forecast of electrical energy production by the RES and a state of charge (SOC) schedule for the EES including at least one SOC target value. A time-varying charge/discharge control signal is configured to ensure that the SOC schedule is satisfied by charging at a rate necessary to meet the SOC target value, while periodically updating the generation of the charge/discharge control signal based upon an updated time-dependent forecast of electrical energy production and/or an updated SOC schedule. A configurable refresh period may be used to limit updates of the time-varying control signal including computation and use of a new basepoint value for aggregated energy supplied from the RES-ESS facility to an electrical grid.

A method for coordinated control of a renewable electrical energy source (RES) and an electrical energy storage (EES) device utilizes a time-dependent forecast of electrical energy production by the RES and a state of charge (SOC) schedule for the EES including at least one SOC target value. A time-varying charge/discharge control signal is configured to ensure that the SOC schedule is satisfied by charging at a rate necessary to meet the SOC target value, while periodically updating the generation of the charge/discharge control signal based upon an updated time-dependent forecast of electrical energy production and/or an updated SOC schedule. A configurable refresh period may be used to limit updates of the time-varying control signal including computation and use of a new basepoint value for aggregated energy supplied from the RES-ESS facility to an electrical grid.

An energy storage includes a first container including an inner space, a plurality of pressure vessels for compressed air that are stacked in rows inside the inner space of the first container, a tank containing a heat transfer fluid arranged inside the inner space of the first container, a compressor adapted to compress air, and a plurality of pneumatic ducts for compressed air connected to the compressor. The plurality of pneumatic ducts includes a plurality of heat exchangers adapted to enable a heat exchange between compressed air contained in the plurality of pneumatic ducts and heat transfer fluid contained inside the tank. The plurality of pneumatic ducts is connected to the plurality of pressure vessels supplying pressure vessels with compressed air, an electric turbine connected by the plurality of pneumatic ducts with the plurality of pressure vessels supplying compressed air for rotating the electric turbine to generate electric current.

An energy storage includes a first container including an inner space, a plurality of pressure vessels for compressed air that are stacked in rows inside the inner space of the first container, a tank containing a heat transfer fluid arranged inside the inner space of the first container, a compressor adapted to compress air, and a plurality of pneumatic ducts for compressed air connected to the compressor. The plurality of pneumatic ducts includes a plurality of heat exchangers adapted to enable a heat exchange between compressed air contained in the plurality of pneumatic ducts and heat transfer fluid contained inside the tank. The plurality of pneumatic ducts is connected to the plurality of pressure vessels supplying pressure vessels with compressed air, an electric turbine connected by the plurality of pneumatic ducts with the plurality of pressure vessels supplying compressed air for rotating the electric turbine to generate electric current.

A width-adjustable packaging bag shaper, a bag maker, a packaging machine, and a method. The packaging machine including the bag maker, a traction device and a heat sealing device are respectively arranged above the bag maker, and a width adjustment device adjusts the distances between different sub bottom plates in a front bottom plate and a rear bottom plate by using a leadscrew and slide block mechanism, and then adjusts the width of a bottom plate. The leadscrew and slide block mechanism is used as the width adjustment device of the automatic width-adjustable noodle packaging bag shaper system, and four bottom plates are respectively fixed to the width adjustment device, so the leadscrew and slide block mechanism in operation is accurate in range of adjustment, is suitable for various widths of packaging bags, and has very important significance for the three-dimensional shaping effect of the packaging bags.

The present invention relates to the field of street lamp lighting, and more particularly to a tracking type solar and wind-solar hybrid street lamp, the current PV panels of solar and wind-solar hybrid street lamp is fixed installations and cannot be tracked, and the cost of existing tracking technology is expensive due to its complex structure, it is costly and cannot be applied to low-cost solar street lamps at all, how to solve the problem that street lamps can not only be able to tracking, but also have practical value have become a technical problem that needs to be solved urgently in the solar and wind-solar hybrid street lamp industry, the present invention provides a tracking technology that does not require a photoelectric sensor, and is constructed into a variety of tracking-type solar and wind-solar hybrid street lamp with different structures, which satisfactorily solves the above-mentioned problems.

The present invention relates to the field of street lamp lighting, and more particularly to a tracking type solar and wind-solar hybrid street lamp, the current PV panels of solar and wind-solar hybrid street lamp is fixed installations and cannot be tracked, and the cost of existing tracking technology is expensive due to its complex structure, it is costly and cannot be applied to low-cost solar street lamps at all, how to solve the problem that street lamps can not only be able to tracking, but also have practical value have become a technical problem that needs to be solved urgently in the solar and wind-solar hybrid street lamp industry, the present invention provides a tracking technology that does not require a photoelectric sensor, and is constructed into a variety of tracking-type solar and wind-solar hybrid street lamp with different structures, which satisfactorily solves the above-mentioned problems.

Electrical-power generating module, characterised in that it comprises at least one wind turbine (E) having blades (E1) forming blade tips (E11) and at least one photovoltaic surface (P) comprising an undulating rigid structure (S) covered with flexible photovoltaic panels (F), the wind turbine (E) being disposed above the flexible photovoltaic panels (F) with the blade tips (E11) passing close to the flexible photovoltaic panels (F) in order to deter birds and clean the flexible photovoltaic panels (F).