JP2006514255A - Heat exchange device and method for conditioning a working medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a state adjustment of a working medium in an as simple manner as possible.
A heat exchange device using a working medium and a heat exchange medium, wherein the working medium is heat exchanged with the heat exchange medium through a heat exchange surface in order to generate a required operating point, thereby forming a chamber. At least one conduit through which the working medium flows into the chamber and circulates the heat exchange medium penetrates and / or limits the chamber, in particular at least the surrounding chamber in its maximum longitudinal extension direction One pipe passes through.

Description

  The present invention is a heat exchange device using a working medium and a heat exchange medium, in which the working medium exchanges heat with the heat exchange medium via a heat exchange surface in the sense of generating a required operating point, and heat The invention relates to a method for conditioning a working medium with an exchange medium.

  Heat exchange devices in which a working medium is exchanged with a heat exchange medium via a heat exchange surface in the sense of generating a required operating point are known in various ways. Such a heat exchange device is, for example, a vehicle radiator, in which engine coolant is a working medium, and the ambient air that circulates is a heat exchange medium. However, a heat exchange device is also required for other working media of an engine such as an internal combustion engine. For example, it is known that combustion exhaust gas from an internal combustion engine is returned to a combustion chamber and cooled in advance via a heat exchanger. Similarly, it is known to cool compressed air to activate vehicle brakes or engine brakes.

  Known heat exchangers are individual components that are housed in their own housing and can only be partially integrated into the engine's total cooling system.

  In a heat exchanger in which the heat exchange medium flows in the region where the working medium flows in a forced flow, it is a disadvantage that a super-pressure-resistant housing that is appropriately adapted is essential. It is also essential to generate a forced flow of working medium.

  Accordingly, an object of the present invention is to provide a heat exchange device that can achieve the state adjustment of the working medium in the simplest possible manner.

  This object is achieved according to the invention in that a chamber is formed, and at least one conduit through which the working medium flows into the chamber and circulates the heat exchange medium penetrates and / or limits the chamber, in particular It is solved by surrounding.

Embodiments of the Invention

  The method according to the invention for conditioning a working medium is characterized in that the working medium flows into the chamber and that the heat exchange medium flows through at least one conduit passing through the chamber. Is also suitable for solving the problem in an advantageous manner.

  Within the heat exchange device, the working medium is conditioned by the heat exchange medium. In this case, the state adjustment is performed by heat exchange between the working medium and the heat exchange medium in the sense of generating a required operating point. For this purpose, a heat exchange surface is formed in the heat exchange device, and the heat exchange can be carried out via this heat exchange surface so that both media are separated from each other. According to the invention, a chamber is formed, and the working medium flows into the chamber. At least one conduit for circulating the heat exchange medium passes through the chamber.

  In this configuration, the working medium does not have to actively flow beside the heat exchange surface, so that heat exchange can be performed by free convection, whether it is only partially forced or not forced at all. In this case, the conditioning of the working medium can be in particular the cooling of the working medium.

  According to a preferred configuration of the present invention, at least one conduit passes through the chamber in the maximum longitudinal extension direction. The alignment of the conduits in the maximum longitudinal extension direction of the chamber provides the possibility to form the heat exchange surface as large as possible by shaping the surface area of the conduit as large as possible in the chamber. This is useful for favorable heat exchange, especially when heat exchange takes place mainly or almost exclusively by free convection.

  According to an advantageous configuration of the invention, the at least one line has heat exchange fins such as cooling fins. The heat exchange fins help to increase the pipe surface area and thus the heat exchange surface and thus the overall heat exchange between both media. According to a preferred development, the heat exchange fins are arranged on the outer surface of the duct and project from the duct into the room. Thereby, especially the surface area which contacts the working medium of the heat exchange surface formed by the heat exchange fins is enlarged. For example, by using a suitable good heat conductive material such as metal, the heat conduction in the material is increased. Even when the heat exchange fins do not circulate the heat exchange medium on the inside, the increase in the surface area works. When the transition direction of the heat exchange fin is formed perpendicular to the transition direction of the pipe line in the room, the working medium can flow into and out of the chamber according to various conditions and various requests. It is also advantageous in terms of good heat exchange. In particular, fins arranged parallel to the direction of gravity are advantageous.

  According to a preferred development of the invention, the heat exchange fin is formed in accordance with the inflow direction of the working medium into the chamber and / or in the outflow direction of the working medium from the chamber.

  According to another advantageous configuration of the invention, at least one conduit is formed in the region of the at least one inlet of the chamber. By forming a pipe line in the region of the inlet, a forced ambient flow of the pipe line is achieved, and at the same time, a certain percentage of forced convection heat exchange is achieved in addition to pure free convection heat exchange. According to the improved configuration, it is possible to provide a plurality of inlets into the room, and one pipe line extends in the region of each inlet. One common pipe line can be attached to each of the plurality of inflow ports. In particular, a case in which only a small number of pipelines are provided is possible, each pipeline extending in the region of a plurality of inlets. On the other hand, it is also conceivable that each inlet is provided with another pipe line attached solely to this inlet. In that case, at least as many conduits as the inflow ports are provided.

  Furthermore, instead of or in addition to it, at least one conduit can be formed in the region of the at least one outlet. Here again, the flow around the pipe line produces forced convection when the working medium flows out of the chamber, which supplements the free convection. In particular, a plurality of outlets can be provided, and one pipe line extends in the area of each outlet. However, it is quite possible to attach the same pipe line to a plurality of outlets. However, another pipe line can be attached to each outlet. The inlet and outlet can be the same. That is, one port can be used periodically as an inlet and then as an outlet.

  In particular, it is possible to provide various configurations in which at least one, mainly exactly one inlet and at least one outlet, mainly at least exactly one outlet, are attached to each pipeline. In particular, it is possible to attach a plurality of inlets to one pipe line, but to attach only one outlet.

  If the working medium directly circulates through the region provided with the heat exchange fins in the channel from the inlet to the outlet or the outlet, the flowability of such a region is advantageously particularly good. As a result, the forced guidance of the working medium flowing in or out is particularly good, and the efficiency of forced convection is increased.

  According to a preferred configuration of the invention, the chamber constitutes a working medium storage device. With this measure, the storage device that is necessary in some cases simultaneously becomes a heat exchange device. A separate housing for the heat exchange device is omitted. This is advantageous, in particular, because the housing of the heat exchange device presents design requirements that are at least well consistent with the storage device. The requirements for hermeticity, pressure resistance and thermal load capacity are almost consistent with each other.

  In the improved arrangement of the invention, the chamber can also form a pressure accumulator. The accumulator has the advantage that, in particular in connection with the gas working medium, the working medium under pressure allows a better heat exchange with the heat exchange medium than the working medium under atmospheric pressure.

  According to another refinement of the invention, the chamber is an integral component of an engine member or compressor member, in particular an engine exhaust duct, exhaust recirculation device or brake device. Regardless of whether or not it has a storage function, the heat exchanging device becomes a component of the functional element, thereby significantly reducing the structural expenditure for the heat exchanging device. According to an advantageous configuration, the chamber required for the heat exchange device can be formed directly in the region of the engine block or be a component thereof. As a result, the chamber can be created particularly simply.

  In the method according to the invention for conditioning a working medium by means of a heat exchange medium, the working medium flows into the chamber, the heat exchange medium flows through this chamber, and in this case in one conduit passing through the chamber Guided. This measure enables heat exchange that is not influenced by the forced circulation of the working medium in the heat exchanger. According to an advantageous implementation, the conditioning of the working medium in the chamber takes place at least in part by free convection. This heat exchange system can be produced in a particularly preferred and simple manner. According to an advantageous configuration of the method, the working medium is passed through a region with heat exchange fins at least when flowing into or out of the chamber. Passing through this region with heat exchange fins creates forced convection and increases the efficiency of the heat exchanger, but does not require the heat exchanger to specifically generate a forced flow of the working medium. Only the flow of the working medium that already exists is used. This flow occurs, in particular, in the form of a medium flow behavior that occurs automatically, particularly via a pressure gradient, or in any case through the required circulation or removal of the working medium from the chamber. According to a preferred configuration, the heat exchange fins are aligned in the direction of inflow or outflow of the working medium, and the working medium can flow between the fins in a particularly preferred manner. This alignment mode reduces flow resistance and at the same time provides good flow of air gaps between heat exchange fins.

  According to an advantageous configuration of the method according to the invention, the heat exchange fins are aligned in the direction of convection flow in the chamber. Such alignment facilitates the generation of convection flow in the room, particularly when the residence time in the room is relatively long and the room is shaped to promote convection flow in the room. become. Such flow will in turn enhance free convection with a slight flow resistance and good ambient flow of heat exchange fins. A convective flow occurs, inter alia, when the portion of the working medium that flows out is relatively small compared to the volume of the chamber and flows out at a low flow rate. With such a design of the chamber and the chamber volume, a particularly good conditioning of the working medium can be achieved. This is because, in conjunction with this, the average residence time of the working medium in the room is increased, so that a very good heat energy exchange can be achieved between the working medium and the heat exchange medium. Further, the arrangement of the inflow port and the outflow port can be performed such that generation of a convection flow is promoted by their flow direction and their positioning in the chamber.

  According to another advantageous configuration of the method, the working medium is pressurized in the chamber. It is particularly advantageous to store the working medium under pressure in the chamber when the working medium is present in the gaseous state. In this case, the application of pressure increases the particle density and at the same time an improved heat exchange by free convection is achieved. Advantageously, the working medium can be used to operate a vehicle engine (internal combustion engine), a braking device or a pressure accumulator.

  In a preferred arrangement, the method according to the invention is carried out using a heat exchange device constituted according to the invention.

  The invention is schematically illustrated in the drawings on the basis of embodiments and is described in detail below with reference to the drawings.

  1-4 show various embodiments of chambers and conduit arrangements made therein, where heat exchange fins are integrally formed in the conduit. The various configurations differ in that the configuration of the chamber 10, at least one inlet and outlet, respectively, and the positioning of the at least one conduit in the chamber is different.

  A heat exchange device 99 shown in FIG. 1 has a chamber 10 formed in a rectangular shape in cross section. This chamber constitutes a storage device for the working medium, which is particularly under pressure.

  In the illustrated embodiment, three ducts 20 are inserted into the chamber 10, and the duct 20 allows the heat exchange medium 21 to flow. The three pipe lines 20 are surrounded by heat exchange fins 22 on the outside. The working medium 13 flows into the chamber 10 through the inlet 11 in the illustrated plane. In that case, the three pipe lines 20 are attached so that the working medium 13 flowing in flows directly through the pipe lines 20 or flows through the region of the heat exchange fins. That is, in the illustrated embodiment, a plurality of pipelines 20 are attached to one inflow port 11. However, further inlets 11 can be provided in these pipes in the longitudinal direction of the heat exchanger 99, optionally or additionally with one or more outlets 12, which means that In the following, it will be explained in the longitudinal section according to FIGS.

  In the heat exchange between the working medium 13 and the heat exchange medium 21, the working medium 13 comes into contact with the heat exchange fins 22 on the one hand, and on the other hand, the working medium 13 continues to stay in the chamber 10, This is done by cooling in the form of free convection.

  In the configuration of the present invention shown in FIG. 1, the pipe line 20 is formed as a circular pipe and is similarly surrounded by a circular heat exchange fin with an outer contour. The heat exchange fins are mainly in a plane extending radially around the conduit 20, as shown for example in FIG. 5b.

  FIG. 2 shows a modification of the configuration of the exhaust heat exchange device. The heat exchange devices 99 of FIGS. 1 and 2 are substantially coincident with each other, and FIG. 2 only illustrates the difference between both configurations. In the modeling of the heat exchange fin 22 in FIG. 2, a rectangular outer contour is formed, and the heat exchange fin forms an intermittent region of the chamber, and this region includes the heat exchange fin without a gap. A separate storage device 14 is formed next to it, which does not have heat exchange fins and forms the main storage volume of the chamber 10. In other respects, the heat exchange device 99 of FIG. 2 can be shaped according to FIG. By forming the heat exchange fins in this way, the heat exchange surface is enlarged on the one hand, and on the other hand, improved guidance of the flowing working medium is achieved by the finned region.

  1 and 2 are cross-sectional views showing the structure of a heat exchange device 99 according to the present invention. 3 and 4 described below are sectional views of the chamber 10 in the vertical direction.

  FIG. 3 shows the heat exchanging device 99 and the chamber 10, and the pipe line 20 penetrates the chamber in the vertical direction. The pipe line 20 has heat exchange fins projecting into the chamber 10 on the outer surface, and the heat exchange medium 21 flows through the pipe line according to the arrow 23. As shown in the drawing, the heat exchange fins 22 protrude from the pipe line 20 in the radial direction and are aligned. The working medium 13 flows into the working chamber 10 through the inlet 11. The inflow ports 11 are arranged side by side in the longitudinal transition direction of the pipe line 20, but--as opposed to the figure--can also be arranged to be shifted from each other in the vertical direction, and are therefore not necessarily attached to the same pipe line 20. There is no need to keep it. The working medium 13 that flows in first reaches the region of the duct 20 and the heat exchange fins 22 and circulates them according to the flow arrows 16. Furthermore, the chamber 10 still has a storage area 14, in which no heat exchange fins 22 project, and this storage area stores the working medium 13 for the maximum volume. In this region, the working medium is conditioned by free convection and heat exchange continues between the working medium and the heat exchange medium. It may be that cooling or heating of the working medium is a problem in all the diagrams of conditioning of the working medium by heat exchange with the heat exchange medium. The mode of conditioning depends only on the direction in which the temperature difference is dominant. Regardless of whether heating or cooling is performed, the basic structure of the heat exchange device according to the invention is not affected thereby.

  FIG. 3 shows the arrangement of two outlets 12 which can be used selectively or simultaneously. One outlet 12 is arranged on the extension of the outlet 11 arranged in the vertical direction, whereas the other outlet is drawn from the storage area in the axial direction. At the outlet 12 pointed out first, the working medium 13 flowing out again flows through the region having at least one pipe line 20 and the heat exchange fins 22, whereas at the second outlet, the working medium is It flows through the outlet 12 and leaves directly from the storage area 14, and does not flow directly again through the heat exchange fins 22 and the pipe line 20. Valves 15 can be provided at both outlets, the outlet can be controlled by these valves, and the valves at the two outlets can be configured to be independently operable.

  FIG. 4 also shows the chamber 10 of the heat exchanger or pressure cooler, again in longitudinal section. The inlet 11 and the outlet 12 are alternately arranged on the long side surface of the chamber 10. A void 18 is first formed in the chamber 10 when viewed in the inflow direction 16. A separation abdomen 19 is disposed in the gap 18, and the separation abdomen separates a region attached to the inlet of the gap 18 and a region attached to the outlet.

  The working medium flowing into the chamber 10 first flows in the inlet 11 according to the flow arrow 16, then flows through the gap 18 and first reaches the region having the heat exchange fins 22. At that time, the periphery of the pipe 20 also flows. The working medium then reaches into the overflow area 14. In this configuration of the present invention, it is particularly preferable that the heat exchange fins 22 protrude and align in a radial direction with respect to the longitudinal extension direction of the pipe line 20, thereby acting as a flow guide, and heat exchange fins 22 forming a heat exchange surface are particularly preferable. Long contact with is guaranteed at the same time. Further conditioning of the working medium 13 by free convection occurs in the overflow region 14. Conditioning of the working medium by free convection also takes place in the air gap 18. The working medium flows to the outlet 12 according to the flow arrow 17, and the region of the pipe line 20 and the heat exchange fins 22 is also allowed to flow or flow around.

  Furthermore, an outlet 12 can be provided which is directly away from the overflow area 14. In an alternative configuration, it is also possible to arrange only the inlet 11 in the transverse direction, in which case the gap 18 is separated from one another by a separating abdomen 19 between the two inlets and mixing of the individual working fluid streams flowing in. Occurs for the first time in the overflow region 14. Outflow in this case takes place through individual outlets 12 that leave directly from the overflow area 14, which were previously referred to as additional outlets and are withdrawn longitudinally from the chamber 10.

  The fins 22 shown in FIG. 5 protrude from the tube 20 in the radial direction, and extend around the tube in a disk shape, for example. The use of fins 22 aligned in this way is advantageous, in particular, because the inflow or outflow of the working medium occurs perpendicular to the direction of extension of the tube 20 and the working medium 13 is circulated in order to flow through the tube 20 at the inflow or outflow. This is when cross current occurs. The heat exchange fins are formed in particular parallel to the direction of gravity action. The fin height is mainly 1 mm to about 40 mm, and the fin interval is 0.1 to about 20 mm.

  Another embodiment of a heat exchange device 100 according to the present invention is shown in FIG. 6, which substantially corresponds to the implementation of FIG. The working medium 113 flows into the chamber 110 through the inflow port 111. The pipe line 120 inserted into the chamber 110 can circulate the heat exchange medium 121 and is surrounded by the heat exchange fins 122. The wall 130 of the chamber 110 is provided with another line 140 for the heat exchange medium 121 for additional heat exchange between the heat exchange medium 121 and the working medium 113. Limited. The conduit 140 is formed so as to surround at least a part of the chamber 110. Wall 130 has heat exchange fins 150 to increase the heat exchange surface between chamber 110 and conduit 140, in this embodiment the heat exchange fins are parallel to conduit 120 inserted through chamber 110, and The heat exchange fins 122 are aligned vertically.

  The heat exchanging device 200 shown in FIG. 7 is different from the heat exchanging device 100 of FIG. 6 in that the heat exchanging fins 222 of the pipe line 220 substantially block the transverse section of the chamber 210. This is because the heat exchange surface further increases between the working medium 213 and the heat exchange medium 221 as in the heat exchange apparatus 99 shown in FIG.

  FIG. 8 shows the heat exchange device 300 in a longitudinal sectional view. This heat exchange device 300 substantially corresponds to the heat exchange device 100 of FIG. 6, and has an inlet 311 for the working medium 313, a chamber 310 and an outlet 312, an inlet 324 for the heat exchange medium 321, a pipe line 320 and 340 and an outlet 325. The pipes 320 and 340 are provided with heat exchange fins 322 or 350.

  The working medium stream 313 flows into the chamber 310 through the inlet 311 and is guided by the heat exchange fins 322 along the arrows 355 to the heat exchange fins 350 and then moves in the direction of the arrow 360, for example one of the arrows 365, 366. Then, the heat flows again through the heat exchange fins 322 and finally flows out of the chamber 310 through the outlet 312. The fins 322 and 350 are arranged in this way to form a flow guide means for the working medium 313, thereby enhancing heat exchange between the working medium 313 and the heat exchange medium 321 flowing along the arrow 370, It can be controlled depending on the circumstances.

  In this heat exchange apparatus 300, the inlet 311 is not explicitly attached to one of the outlets 312, so that the working medium 313 in the chamber 310 is optionally supplied through one or more inlets 311 and / or A plurality of outlets 312 can be taken out.

  FIG. 9 shows a simplified implementation of the heat exchange device 300 of FIG. The heat exchange device 400 includes a chamber 410, a heat exchange medium 421 pipe 420 inserted into the chamber 410 and provided with fins 422, and a wall 430 with fins 450. The fins 450 serve to enhance heat exchange between the working medium 413 in the chamber 410 and the surroundings of the heat exchange device 400. In the example not shown, another line for the heat exchange medium is arranged on the wall 430 as in the embodiment of FIG.

  Each of the fins 450 is interrupted, and the interruption is mainly performed in the region of the inlet 411 or the outlet 412 for the working medium 413 respectively, and the flow resistance for the working medium 413 is reduced in these regions. This advantageously reduces the pressure loss in the chamber 410 for the working medium. In addition, the functional mode of the heat exchange device 400 is the same as that described with reference to FIG.

1 is a schematic cross-sectional view of a first embodiment of a heat exchange device according to the present invention. It is a general | schematic cross-sectional view of 2nd Embodiment of the heat exchange apparatus which concerns on this invention. The structure of a 3rd heat exchange apparatus is shown with a substantially longitudinal cross-sectional view. The structure of 4th Embodiment of a heat exchange apparatus is shown with a substantially longitudinal cross-sectional view. The Example of the heat exchange fin in the pipe line area | region of the heat exchange apparatus which concerns on this invention is shown. It is a general | schematic cross-sectional view of a 5th heat exchange apparatus. It is a general | schematic cross-sectional view of a 6th heat exchange apparatus. It is a schematic longitudinal cross-sectional view of a heat exchange apparatus. It is a schematic longitudinal cross-sectional view of a modified embodiment of the heat exchange device.

Explanation of symbols

10 Chamber 11 Inlet 12 Outlet 13 Working medium 14 Storage device 15 Valve 16 Inflow direction 17 Arrow 18 Cavity 19 Separation abdomen 20 Pipe 21 Heat exchange medium 22 Heat exchange fin 23 Arrow 99, 100 Heat exchange device 110 Chamber 111 Inlet 113 Work medium 120 Pipe 121 Heat exchange medium 122 Heat exchange fin 130 Wall 140 Pipe 150 Heat exchange fin 200 Heat exchange device 210 Chamber 213 Work medium 220 Pipe 221 Heat exchange medium 222 Heat exchange fin 300 Heat exchange device 310 Chamber 311 Inlet 312 Outlet 313 Working medium 320, 340 Pipe line 321 Heat exchange medium 322, 350 Heat exchange fin 324 Inlet 325 Outlet 355 Arrow 365, 366 Arrow 370 Arrow 400 Heat exchange device 410 Chamber 411 Inlet 412 Outlet 413 Working medium 421 Heat exchange medium 422 450 fin

Claims (33)

  A heat exchange device that uses a working medium and a heat exchange medium, the working medium is heat exchanged with the heat exchange medium through a heat exchange surface in the sense of generating a required operating point, and a chamber is formed, A heat exchange device, characterized in that at least one conduit through which the working medium flows into the chamber and circulates the heat exchanging medium penetrates and / or limits the chamber and in particular surrounds it.   The heat exchange device according to claim 1, wherein at least one pipe passes through the chamber in the maximum longitudinal extension direction.   The heat exchange apparatus according to claim 1, wherein the at least one pipe line has heat exchange fins.   The heat exchange apparatus according to claim 3, wherein the heat exchange fin is disposed on an outer surface of the pipe line and protrudes into the room from the pipe line.   The heat exchange device according to claim 4, wherein the heat exchange fins are formed so as to stand vertically with respect to a transition direction of the at least one pipe line, and particularly project in a radial direction.   6. The heat exchange device according to claim 4, wherein the heat exchange fins are formed in accordance with an inflow direction of the working medium into the chamber.   The heat exchange device according to any one of claims 4 to 6, wherein the heat exchange fins are formed in accordance with a flow direction of the working medium from the chamber.   A heat exchange device according to any one of the preceding claims, characterized in that the at least one conduit is formed in the region of at least one inlet of the chamber.   The heat exchange device according to claim 8, wherein a plurality of inlets are provided, and one pipe line extends in a region of each inlet.   The heat exchanger according to claim 9, wherein one common pipe line is attached to each of the plurality of inflow ports.   The heat exchanger according to claim 9, wherein a separate pipe is attached to each inflow port.   The heat exchange device according to any one of the preceding claims, characterized in that the at least one conduit is formed in the region of at least one outlet.   The heat exchange device according to claim 12, wherein a plurality of outlets are provided, and one pipe line extends in a region of each outlet.   14. The heat exchange device according to claim 13, wherein one common pipe line is attached to each of the plurality of outlets.   The heat exchanger according to claim 13, wherein another outlet is attached to each outlet.   Each pipe line is provided with at least one inlet and at least one outlet, mainly having at least one, in particular, exactly one inlet and exactly one outlet. The heat exchange device according to any one of the preceding claims.   A heat exchange device according to any one of the preceding claims, characterized in that at least one pipe line surrounding the chamber is arranged on the wall of the chamber, the wall in particular comprising heat exchange fins. .   18. The heat exchange device according to claim 17, wherein the heat exchange fin of the wall forms a flow guide means for the working medium with the heat exchange fin of the pipe passing through the chamber.   The heat exchange device according to any one of the preceding claims, wherein the working medium flows through a region having heat exchange fins in a flow path from the inflow port to the outflow port.   The heat exchange device according to any one of the preceding claims, wherein the chamber forms a storage container for a working medium.   The heat exchange device according to claim 20, wherein the chamber forms a pressure accumulator.   The heat exchange device according to any one of the preceding claims, wherein the chamber is a component of a vehicle functional element.   23. A heat exchanging device according to claim 22, characterized in that the chamber is an integral component of an engine member, in particular an engine exhaust duct, an exhaust recirculation device, a brake device or a compressor.   24. A heat exchange device according to claim 23, characterized in that the chamber is formed directly in the region of the engine block or is a component thereof.   The heat exchange device according to any one of the preceding claims, characterized in that the fin height is 1 mm to about 40 mm and the fin interval is 0.1 to about 20 mm.   A method for conditioning a working medium with a heat exchange medium, wherein the working medium flows into a chamber and the heat exchange medium flows through at least one conduit passing through the chamber.   27. A method according to claim 26, characterized in that the conditioning of the working medium in the room is performed at least in part by free convection.   28. A method according to claim 26 or 27, characterized in that the working medium flows through the region with heat exchange fins at least when flowing into or out of the chamber.   The method according to claim 28, characterized in that the heat exchange fins are aligned in the inflow or outflow direction of the working medium.   29. The method of claim 28, wherein the heat exchange fins are aligned in the direction of convective flow in the chamber.   31. A method according to any one of claims 26 to 30, characterized in that a working medium is stored in the chamber and the working medium is pressurized in the chamber.   32. A method as claimed in any one of claims 26 to 31, characterized in that the working medium serves to operate a vehicle engine or braking device. The method according to any one of claims 26 to 32, characterized in that the method is carried out using the heat exchange device according to any one of claims 1 to 23.

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