A duct comprising: an inlet; an outlet; a shell having a tubular form extending between the inlet and the outlet; a main flow path (H) within the shell for conveying a main flow between the inlet and the outlet; and a heat exchange structure, wherein the heat exchange structure comprises: an intake port provided in the shell; an output port provided in the shell; and a secondary flow path (C) within the shell for conveying a secondary flow between the intake port and the output port, wherein the secondary flow path is spirally intertwined with the main flow path for a section of the duct to provide a heat exchanger within the duct.

The present invention is related to cooling systems for electronic devices used in downhole operations. In this scenario, the present invention provides a downhole electronic device cooling system comprising a first heat exchanger element (1) internal to a heat exchanger vessel (3), and a second heat exchanger element (2) associated with the electronic device (4), wherein the first (1) and second (2) heat exchanger elements are in fluid communication by a cooling fluid, wherein the heat exchanger vessel (3) allows the circulation of a secondary cooling fluid,

The present invention is related to cooling systems for electronic devices used in downhole operations. In this scenario, the present invention provides a downhole electronic device cooling system comprising a first heat exchanger element (1) internal to a heat exchanger vessel (3), and a second heat exchanger element (2) associated with the electronic device (4), wherein the first (1) and second (2) heat exchanger elements are in fluid communication by a cooling fluid, wherein the heat exchanger vessel (3) allows the circulation of a secondary cooling fluid,

A condensation heat exchanger including at least one helically-coiled tube, inside which a fluid to be heated can circulate, a deflector, and a shell mounted inside which the tube, the shell having a gas-discharge sleeve having a bottom and a facade for feeding and/or producing a hot gas, inside the shell. The shell comprises a tubular metallic shroud closed at its two ends by a facade and a bottom, wherein the bottom is made of composite plastic, the rear edge of the shroud has a plurality of fastening tongues, the bottom has, at its periphery, a plurality of fastening slots arranged along at least part of its circumference, each fastening slot bordered longitudinally by a first longitudinal rib projecting outwardly, and wherein each fastening tongue is inserted into a fastening slot and folded twice around the first rib.

A heat exchanging apparatus is adapted for differences in piping conditions at installation sites, reducing man-hours for manufacturing, management and installation for cost reduction. The heat exchanging apparatus includes a case open upward, a heat exchange unit housed in the case, and a storage tank arranged at an upper section of the case. A heat transfer medium inlet and a heat transfer medium outlet are open in the same direction at both ends of a heat transfer medium circulation pipe. A heat exchange fluid discharge port for discharging heat exchange fluid having dropped in the case is formed on one of side walls of the case either in the same direction as or in the opposite direction to the opening direction of the heat transfer medium inlet and the heat transfer medium outlet so that the heat exchange unit can be vertically taken in and out of the case.

A heat exchanging apparatus is adapted for differences in piping conditions at installation sites, reducing man-hours for manufacturing, management and installation for cost reduction. The heat exchanging apparatus includes a case open upward, a heat exchange unit housed in the case, and a storage tank arranged at an upper section of the case. A heat transfer medium inlet and a heat transfer medium outlet are open in the same direction at both ends of a heat transfer medium circulation pipe. A heat exchange fluid discharge port for discharging heat exchange fluid having dropped in the case is formed on one of side walls of the case either in the same direction as or in the opposite direction to the opening direction of the heat transfer medium inlet and the heat transfer medium outlet so that the heat exchange unit can be vertically taken in and out of the case.

A heat exchanger includes a first fluid pathway enclosed in a heat exchanger body to convey a first fluid through the heat exchanger body and a second fluid pathway enclosed in the heat exchanger body to convey a second fluid through the heat exchanger body and facilitate thermal energy exchange between the first fluid and the second fluid. The first fluid pathway and the second fluid pathway together are arranged in a spiral arrangement extending along a central axis of the heat exchanger.

A heat exchange array arranged to be used in a heat exchange unit and further arranged to recover energy from an exhaust gas, comprising: a first heat exchange tube and a second heat exchange tube, each arranged to carry a heat exchange medium and further each comprising a series of external fins; and wherein the first heat exchange tube comprises a left-handed helically coiled tube having an first elastic stress, and the second heat exchange coil comprises a right-handed helically coiled tube having a second elastic stress, and wherein the first and second heat exchange tubes are interconnected such that the first elastic stress opposes the second elastic stress.

Methods, apparatus and systems using heat exchanger reactors to form polymer derived ceramic materials, including methods for making polysilocarb (SiOC) precursors.

The disclosure provides a high-efficiency heat exchanger for a temperature control system of a fuel cell and a processing device thereof. The processing device includes a frame body and a power box. A bottom of the frame body is fixed to the ground by screws, and the power box is arranged at a side of the frame body for intelligent control. A displacement screw is arranged on a top of the frame body, and a sliding block driven by electricity is arranged on a surface of the displacement screw. Two ends of the displacement screw are respectively provided with a limit switch for controlling a limit position of the sliding block. A drive motor is arranged on a surface of the sliding block, and a displacement sensor is arranged on one side surface of the sliding block.