A geothermal well is provided including a first tube including at least one opening in a first depth; a second tube having a closed bottom in a second depth; and a third tube having a closed bottom in a third depth. The first tube is inside the second tube, which is inside the third tube, wherein the first tube has at least one opening in fluid communication with a first interspace between the first tube and the second tube; wherein the third depth and the first depth are smaller than the second depth. Through-holes are formed in the second tube above the bottom of the third tube, which allow fluid communication between the first interspace and a second interspace between the second tube and the third tube. A first sealing element and a heat insulating material are disposed in the first interspace above the through-holes.

A heat exchanger for flammable refrigerants has a housing in which refrigerant lines are situated. The housing is provided with fins on the inside of a closed side face, and at least a portion of the outside of the closed side face can be brought into operative connection with a passenger compartment of a vehicle. The housing is designed as a module which can be partitioned off from the passenger compartment in a gas-tight manner, where only permanently sealed sections of the refrigerant lines are situated in the interior of the housing, the connection points of which refrigerant lines are each situated completely outside the housing. The housing has sealing frame and/or sealing plates such that the connections of the refrigerant lines are sealed off from the passenger compartment and are ventilated outward to the surroundings.

A heat exchanger including a shell having a longitudinal axis, a plurality of baffles, such as elliptical sector-shaped baffles, each mounted in the shell at a helix angle H.sub.B to guide a fluid flow into a helical pattern through the shell. Each of the plurality of baffles includes an outer circumferential edge, a proximal radial edge, a distal radial edge, a proximal side, a distal side, and a plurality of spaced apart holes that are traversed by a plurality of axially extending tubes. Each of the first plurality of seal strips is disposed from a proximal of the plurality of baffles to a distal of the plurality of baffles.

A heat exchanger arrangement having at least a first heat exchanger and having a second heat exchanger, wherein the first heat exchanger has a first heat transfer matrix with a first air intake surface and with a first air outlet surface, and wherein the second heat exchanger has a second heat transfer matrix with a second air intake surface and with a second air outlet surface, wherein the first heat exchanger and the second heat exchanger are arranged adjacent to one another in such a manner that the first air outlet surface is opposite the second air intake surface and the two heat exchangers are arranged one behind the other in a primary direction of airflow, wherein at least one sealing strip is arranged on at least one lateral side region of the two heat exchangers or on both lateral side regions of the heat exchangers.

A thin vapor chamber is provided. The thin vapor chamber includes an upper plate, a lower plate, and a plurality of solid columns. The lower plate is opposite to the upper plate, and the upper plate and the lower plate are combined to form a closed space. The solid column is formed on the upper plate and extends to the lower plate. The solid columns are located in the closed space. The solid columns respectively have at least one capillary groove, and a first portion of an inner surface of the capillary groove faces a second portion of the inner surface.

A liquid cooling head includes a bottom plate, a heat dissipation plate, a partition plate and an upper cover plate. The bottom plate includes an opening, and the heat dissipation plate, the partition plate and the upper cover plate are fixed to the bottom plate. The partition plate divides the opening into a plurality of cooling chambers, and each cooling chamber is equipped with a cooling liquid inlet, a cooling liquid outlet, a pump and an electric control device. The cooling liquid inlet and the cooling liquid outlet are formed in the upper cover plate, the pump is fluid-connected to the cooling liquid outlet, and the electric control device drives the pump to rotate, so that the cooling liquid flows through the cooling chamber to cool one heat source below the heat dissipation plate. In addition, a liquid cooling device with the liquid cooling head is also disclosed therein.

A liquid cooling head manufacturing method includes the following steps. First, a liquid channel main body is provided. Then, a heat dissipation bottom plate and a heat sink are disposed in different recessed indentations in the liquid channel main body. The heat dissipation bottom plate and the heat sink are welded in the liquid channel main body and a cover plate is sealed on the liquid channel main body.

The present invention refers to a device to repair leakage in high pressure shell-and-tube heat exchanger using gasket and tensioning by cases. The device aims to repair leakages in heat exchangers in flanged connections of large diameter where there is the gap or channel to allow for gasket placement. The device is fully screwed, with no risk of flash during its implantation and can be used at high temperatures and pressure, in addition to presenting an ease of manufacture/assembly, reducing implementation costs. Basically, the device comprises an adjustment screw holder, gasket compression ring, stabilizer support, and compression adjustment screws.

A three-dimensional heat dissipating device includes a vapor chamber, a heat pipe, a working fluid and a solder bonding portion. The vapor chamber includes an inner cavity and a first joint. The first joint is formed with a passage being in communication with the inner cavity. The heat pipe is provided with a pipe space and a second joint. The pipe space is in communication with the inner cavity through the passage. The second joint is sleeved to surround the first joint such that one end surface of the second joint is directly contacted with one surface of the vapor chamber. The working fluid is filled within the pipe space and the inner cavity. The solder bonding portion connected to the second joint and the surface of the vapor chamber for integrating the heat pipe and the vapor chamber together.

A three-dimensional heat dissipating device includes a vapor chamber, a heat pipe and a working fluid. The vapor chamber includes an inner cavity, a first capillary structure disposed within the inner cavity, and a first joint connected with the inner cavity. The heat pipe includes a pipe body, a second capillary structure, and a second joint disposed at the pipe body and connected to the first joint, such that a pipe space of the pipe body is in communication with the inner cavity. The second capillary structure includes a first section and a second section. The first section is fixedly disposed within a pipe space and connected to the second section. The second section is curvedly extended from one end of the first section, and connected to the first capillary structure. The working fluid is filled within the pipe space and the inner cavity.