The present invention relates to a modular reflux sampler, including a condenser container and a vortex tube. The condenser container is enclosed outside a gas pipeline to be cooled; the vortex tube has a cold air nozzle; the cold air nozzle extends into the condenser container to inject cold air in order to cool the gas pipeline; the vortex tube is connected with a compressed air duct to input compressed air as a cold air raw material; wherein the compressed air duct has a section to pass through the condenser container; and the vortex tube cools the compressed air duct while cooling the gas pipeline, so that the temperature of the compressed air flowing into the vortex tube is reduced, the temperature of the cold air ejected by the cold air nozzle is reduced, the cold air with a lower temperature is input to the condenser container to repeat cooling operation, and a better cooling effect is achieved.

An energy harnessing system comprising a solar collector, a solar-energy heat circulation system, a heat engine, and a refrigerant circulation system. The solar-energy heat circulation system includes a first heat exchanger 11 associated with the solar collector and communicated with at least two second heat exchangers 18a, 18b, 18c, 18d. The heat engine has at least two carbon-dioxide-sublimation-and-deposition chambers 17a, 17b, 17c, 17d, a turbine 30, and an expansion chamber 32. Each carbon-dioxide-sublimation-and-deposition chamber 17a, 17b, 17c, 17d contains one of the second heat exchangers 18a, 18b, 18c, 18d. The refrigerant circulation system is configured to cool the expansion chamber 32 and each sublimation-and-deposition chamber 17a, 17b, 17c, 17d.

An energy harnessing system comprising a solar collector, a solar-energy heat circulation system, a heat engine, and a refrigerant circulation system. The solar-energy heat circulation system includes a first heat exchanger 11 associated with the solar collector and communicated with at least two second heat exchangers 18a, 18b, 18c, 18d. The heat engine has at least two carbon-dioxide-sublimation-and-deposition chambers 17a, 17b, 17c, 17d, a turbine 30, and an expansion chamber 32. Each carbon-dioxide-sublimation-and-deposition chamber 17a, 17b, 17c, 17d contains one of the second heat exchangers 18a, 18b, 18c, 18d. The refrigerant circulation system is configured to cool the expansion chamber 32 and each sublimation-and-deposition chamber 17a, 17b, 17c, 17d.

Systems and methods of generating power in a wellbore extending through a subterranean formation are described. A swirling flow of pressurized fluid is passed through a vortex tube to generate a temperature differential between first and second outlets of the vortex tube. The temperature differential is applied to a thermoelectric generator configured to convert the temperature differential into a voltage. The thermoelectric generator produces electrical power that is transmittable to down-hole tools within the wellbore such as an inflow control valve.

Example apparatus for regulator heat transfer are disclosed. An example apparatus includes a regulator including a body, a stem disposed therein, a first inlet and a first outlet. The regulator regulates a pressure of a fluid flowing from the first inlet to the first outlet. The example apparatus comprises a vortex generator disposed within the body to convey heat to a valve of the regulator. The stem controls the regulator and the vortex generator.

Example apparatus for regulator heat transfer are disclosed. An example apparatus includes a regulator including a body, a stem disposed therein, a first inlet and a first outlet. The regulator regulates a pressure of a fluid flowing from the first inlet to the first outlet. The example apparatus comprises a vortex generator disposed within the body to convey heat to a valve of the regulator. The stem controls the regulator and the vortex generator.

Example apparatus for regulator heat transfer are disclosed. An example apparatus includes a housing including an inlet, an outlet, a first valve, and a stem disposed therein. The example apparatus includes a vortex generator disposed in the housing. A fluid is to flow from the inlet through the vortex generator. The example apparatus includes a second valve disposed in the vortex generator. In the example apparatus, the vortex generator is to generate heat prior to the fluid flowing through the second valve to the outlet. The stem is to control the first valve and the second valve to regulate an amount of the heat conveyed to the first valve.

Example apparatus for regulator heat transfer are disclosed. An example apparatus includes a housing including an inlet, an outlet, a first valve, and a stem disposed therein. The example apparatus includes a vortex generator disposed in the housing. A fluid is to flow from the inlet through the vortex generator. The example apparatus includes a second valve disposed in the vortex generator. In the example apparatus, the vortex generator is to generate heat prior to the fluid flowing through the second valve to the outlet. The stem is to control the first valve and the second valve to regulate an amount of the heat conveyed to the first valve.

Processes and devices for recovering natural gas liquid from a hydrocarbon containing gas are provided by introduction of compressed air to a vortex tube. The vortex tube generates a cold air stream that is introduced into a heat exchanger. A hydrocarbon containing gas of higher temperature than the cold air stream is introduced into the heat exchanger, so that the cold air stream in the heat exchanger cools the hydrocarbon containing gas to condense natural gas vapors in the hydrocarbon containing gas to liquid hydrocarbons. In this manner, liquid hydrocarbons and dry hydrocarbon containing gas are obtained.

Processes and devices for recovering natural gas liquid from a hydrocarbon containing gas are provided by introduction of compressed air to a vortex tube. The vortex tube generates a cold air stream that is introduced into a heat exchanger. A hydrocarbon containing gas of higher temperature than the cold air stream is introduced into the heat exchanger, so that the cold air stream in the heat exchanger cools the hydrocarbon containing gas to condense natural gas vapors in the hydrocarbon containing gas to liquid hydrocarbons. In this manner, liquid hydrocarbons and dry hydrocarbon containing gas are obtained.