A power generation process is disclosed, the process comprises dissolving a solute (10) into an unsaturated stream (140) to produce a high concentration stream (130) and converting latent mixing energy present in a high concentration input stream (130) into power by passage through a power unit (20) in which the concentration of the high concentration input stream (130) is reduced. The process comprises using a reduced concentration output stream (140) derived from the high concentration input stream (130) following passage through the power unit (20) as the unsaturated stream (140). A first fraction of the high concentration stream (130) is passed to the power unit (20) for use as the high concentration input stream (130) and a second fraction of the high concentration stream (130) is output from the process.

A natural enhanced geothermal system (NAT-EGS) that uses a hot sedimentary aquifer (HSA) is disclosed. An example method may include pumping, via an extraction well, heated water from an extraction depth of a HSA, wherein the HSA satisfies a threshold geothermal characteristic. The example method may include extracting, via an energy conversion unit, heat from the heated water to capture energy, resulting in cooled water. The example method may include injecting, via an injection well, the cooled water at an injection depth of the HSA, wherein the injection depth is deeper than the extraction depth.

A stainless steel pipe of a predetermined composition is provided that has an axial tensile yield strength of 689 MPa or more, an axial compressive yield strength/axial tensile yield strength ratio of 0.85 to 1.15, and a microstructure that is 20 to 80% ferrite phase by volume with the remainder containing an austenite phase, the stainless steel pipe having pipe end portions at least one of which has a fastening portion for an external thread or an internal thread, and having a curvature radius of 0.2 mm or more for a corner R formed by a bottom surface of a thread root and a pressure-side flank surface of the thread, measured in an axial plane section of the fastening portion.

Systems and generating power in an organic Rankine cycle (ORC) operation to supply electrical power. In embodiments, an inlet temperature of a flow of gas from a source to an ORC unit may be determined. The source may connect to a main pipeline. The main pipeline may connect to a supply pipeline. The supply pipeline may connect to the ORC unit thereby to allow gas to flow from the source to the ORC unit. Heat from the flow of gas may cause the ORC unit to generate electrical power. The outlet temperature of the flow of the gas from the ORC unit to a return pipe may be determined. A bypass valve, positioned on a bypass pipeline connecting the supply pipeline to the return pipeline, may be adjusted to a position sufficient to maintain temperature of the flow of gas above a threshold based on the inlet and outlet temperature.

A system can include isolation devices, a flow control device, and an energy transfer device. The isolation devices can be positioned between a wall of a wellbore and a tubular positioned in the wellbore for carrying fluid for geothermal energy transfer. The flow control device can be positioned in the wellbore and between the isolation devices for controlling flow of the fluid between zones of the wellbore for transferring geothermal energy to a surface of the wellbore. The energy transfer device can be positioned at the surface of the wellbore for transferring the geothermal energy from the fluid into usable energy.

Systems and techniques may be used for incorporating direct air carbon dioxide capture capabilities into a working fluid condensing process of a geothermal power plant. An example technique may include causing, using fans, air to flow across condenser coils of a condensing unit, through which power cycle working fluid is circulated, and through a direct air capture (DAC) filtration component, which separates carbon from the air, capturing heat from a geothermal working fluid, and using the heat as thermal energy input to the DAC filtration component or using electrical energy generated from the geothermal power plant as electrical energy input to power the condensing unit and the DAC filtration component. The example technique may include gathering the carbon separated from the air to be injected into a geothermal reservoir or repurposed for another industrial process.

An assembly for supporting one or more cables in coiled tubing deployed in a well is described. The assembly includes a receptacle connected to an upper opening of the coiled tubing. A receptacle clamp is connected to the receptacle to provide a circumferential lateral extension surface. A separate extension column having a base portion is supported on the lateral extension surface. The extension column has an upper platform surface separated vertically from the base portion. A cable clamp is supported on the upper platform surface and configured to reversibly grip the one or more cables. The assembly is useful for any process requiring support of cables in coiled tubing deployed in a well, such as a process for assembling a heater for providing underground heat.

The present invention relates to tactile warning panels, and in particular to tactile warning panels that are designed and built with multifunction/multipurpose capabilities that serve the visually impaired and enable the deployment of smart city technology by integrating tactile warning systems and subsurface enclosures that can withstand pressures of five (5) tons up to and exceeding sixty (60) tons and incorporate small cells, beacons, sensors, Fog Computing, electric energy generation, rechargeable power supplies, wireless M2M communication and a plethora of other smart city technologies.

A system and method of transferring heat from the ground is described. At least one heat pipe is provided that has a hollow interior, a heat output end, and a heat input end. The heat output end is positioned higher that the heat input end. The hollow interior contains a working fluid that transfers heat from the input end to the output end. The working fluid is a liquid at a first temperature and a gas at a second temperature where the second temperature is greater than the first temperature. The working fluid becomes a gas as it is heated at the heat input end and returns to a liquid at the heat output end of the pipe when the heat is transferred out of the heat pipe. The heat transferred from the heat output end of the heat pipe is captured for future use.

A geothermal system includes an outer vessel having a sidewall that is in contact with surrounding ground material. A geothermal pile is disposed within an interior volume of the outer vessel, wherein a first heat conducting liquid at least partially fills a space between an inner surface of the sidewall of the outer vessel and an outer surface of the geothermal pile when in an installed condition. A conduit disposed within an interior space of the geothermal pile conducts a second heat conducting liquid along a flow path within the geothermal pile toward a bottom end thereof and then back to an outlet at a top end thereof. During operation, heat is transferred from the surrounding ground to the second heat conducting liquid via the first heat conducting liquid within the space between the inner surface of the sidewall of the outer vessel and the outer surface of the geothermal pile.