A method and system for operating fiber optic monitoring systems utilizing solar panels, batteries, and an interrogator system with associated electronics for operating in cold climates.

A method and system for operating fiber optic monitoring systems utilizing solar panels, batteries, and an interrogator system with associated electronics for operating in cold climates.

A gravity-assisted heat pipe cooling source cold storage system and chiller set. The cold storage system includes a gravity-assisted heat pipe, a cold storage pool, a heat exchanging and cold condensing device, and a heat exchanger pipe. A lower end of the gravity-assisted heat pipe is arranged in the cold storage pool, and an upper end of the gravity-assisted heat pipe is arranged in the heat exchanging and cold condensing device. The heat exchanger pipe is buried underground, and includes a central pipe and a side pipe. Upper ends of the central pipe and the side pipes are communicated with an inlet and outlet of the heat exchanging and cold condensing device, respectively. Lower ends of the central pipe and the side pipes are communicated with each other. The system employs the heat exchanger pipe to provide a cooling source for the gravity-assisted heat pipe.

A heat-pipe type heat extraction integrated with combined cooling power and heating exploitation-utilization integrated geothermal system includes an underground heat pipe, a steam pump, a first absorption bed, a second absorption bed, a first condenser, an electronic expansion valve, an evaporator, a liquid storage tank, a balance valve, a steam turbine, an generator connected to the steam turbine, a second condenser, a heat utilization device connected to the second condenser, a pressurizing pump connected to the second condenser, and relevant linkage valve assemblies. The system controls a flow direction and a flow rate after heat pipe steam is extracted from the ground through the steam pump and the regulating valves on the refrigeration side and the power generation side, so as to select the refrigeration/electric heating single-mode heat utilization or adjust flow distribution during refrigeration/electric heating dual-mode combined use.

A heat-pipe type heat extraction integrated with combined cooling power and heating exploitation-utilization integrated geothermal system includes an underground heat pipe, a steam pump, a first absorption bed, a second absorption bed, a first condenser, an electronic expansion valve, an evaporator, a liquid storage tank, a balance valve, a steam turbine, an generator connected to the steam turbine, a second condenser, a heat utilization device connected to the second condenser, a pressurizing pump connected to the second condenser, and relevant linkage valve assemblies. The system controls a flow direction and a flow rate after heat pipe steam is extracted from the ground through the steam pump and the regulating valves on the refrigeration side and the power generation side, so as to select the refrigeration/electric heating single-mode heat utilization or adjust flow distribution during refrigeration/electric heating dual-mode combined use.

The present disclosure relates to a multi-well geothermal syphoning system, comprising at least one injection well and at least one production well, the at least one injection well having an inlet valve for controlling a volume of a fluid medium entering the system and the at least one production well having an outlet valve for controlling the volume of the fluid medium exiting the system, each of the wells having a well bore extending downwardly from a ground surface to define a plurality of substantially vertical bore sections, a first well bore comprising a first vertical bore section turning through 90 degrees and extending parallel to the ground surface to thereby define a horizontal bore section, the first well bore intersecting with the vertical bore sections of each of the remaining wells to fluidly interconnect each well of the system such that the fluid medium at a first temperature is introduced into the at least one injection well and the fluid medium at a second temperature is drawn from the at least one production well.

In an embodiment, a method of operating a geothermal energy system includes selectively connecting each of a plurality of borehole heat exchangers to any other of the plurality of borehole heat exchangers thereby to permit flow of a working fluid between the borehole heat exchangers and to selectively distribute the working fluid within the plurality of borehole heat exchangers. Each borehole heat exchanger has an elongate tube having a closed bottom end and first and second adjacent elongate coaxial conduits interconnected at the bottom end, the first conduit being tubular and surrounded by the second conduit which is annular. Each borehole heat exchanger has a major portion thereof extending in a substantially inclined orientation at an angle of from 3 to 95 degrees from vertical, the borehole heat exchangers being connected to a manifold for the working fluid.

A method for estimating a location on the ocean bottom for drilling a well for exploring a geothermal reservoir, includes receiving data sets indicative of the geothermal reservoir and ocean conditions above the geothermal reservoir, selecting plural factors represented in the data sets and indicative of the geothermal reservoir, associating each factor of the plural factors with one or more criterion that indicates a desirability of drilling the well at the location of the geothermal reservoir, assigning to each factor an individual score based on the one or more criterion, aggregating the individual scores into a single overall score, and selecting the location of the geothermal reservoir when the single overall score is larger than a given threshold.

A method for estimating a location on the ocean bottom for drilling a well for exploring a geothermal reservoir, includes receiving data sets indicative of the geothermal reservoir and ocean conditions above the geothermal reservoir, selecting plural factors represented in the data sets and indicative of the geothermal reservoir, associating each factor of the plural factors with one or more criterion that indicates a desirability of drilling the well at the location of the geothermal reservoir, assigning to each factor an individual score based on the one or more criterion, aggregating the individual scores into a single overall score, and selecting the location of the geothermal reservoir when the single overall score is larger than a given threshold.

A geothermal plant, for extracting energy from a geothermal reservoir located below the ocean bottom, includes a floating platform; a riser that extends from a well drilled into the geothermal reservoir, to the floating platform; an electrical pump having a mechanical actuation part located in a bore of the riser, and an electronic part located outside the riser, wherein the electrical pump is configured to pump a geothermal liquid from the geothermal reservoir to the floating platform; and a power plant located on the floating platform and configured to use a steam produced by the geothermal liquid to generate electrical power. The electrical pump is placed at a depth of the riser where the geothermal liquid is in a single-phase.