A sheet material is used for a heat exchange between a first fluid and a second fluid, and inducing a phase change in the fluids. Additionally, the sheet material is folded to form a plurality of slits to constitute flow paths of the fluids. Further, the slits for the first fluid, through at least one seal, are closed. Furthermore, the slits for the second fluid, through at least one seal, are fully or partly open for fluid outflow.

A refrigerant distributor (4) includes: a box body (42); a refrigerant inlet (41) arranged on an upper surface (421) of the box body (42); liquid exit openings (46) evenly arranged on a lower surface (422) of the box body (42); and end plates arranged at both ends of the box body (42) in a length direction and enclosing the box body (42) from the two ends; wherein, in a height direction from the lower surface (422) of the box body (42) to the upper surface (421) and within a predetermined height range starting from the lower surface (422), a width of the box body (42) increases gradually; and a pre-distributor (3) is arranged inside the box body (42).

Heat exchanger fins and heat exchangers are disclosed. The heat exchanger fins disclosed herein comprise louvers and winglet-type vortex generators arranged to improve heat transfer efficiency.

The invention relates to a removal device (10) for removing a fluid from a refrigeration system, comprising a cooling device (11), through which the fluid is to flow and which has a pipeline assembly (12), which has a plurality of pipeline elements (24, 26) connected to each other, a fluid inlet (28) arranged above the pipeline elements, and a fluid outlet (30) arranged below the pipeline elements, the removal device having a compressor (14), which is arranged before the cooling device (11) in the flow direction and through which the fluid can flow and which is connected to the fluid inlet (28), is easier to clean because the pipeline elements are each arranged at an inclination of an angle (alpha) from the horizontal in such a way that all fluid entering through the fluid inlet (28) is moved to the fluid outlet (30) by gravity.

A cooling device capable of preventing inflow of bubbles to a pump even in a zero-gravity space and a space structure including the cooling device are obtained. In a cooling device, a pump, a cooler, and a radiator are connected sequentially by a refrigerant flow path. An accumulator is connected to the refrigerant flow path connecting the pump and the radiator. The accumulator includes a container storing refrigerant, a cooling section cooling a base-end side of the container, and a heating section heating a front-end side of the container.

A heat exchanger (10) of heat pipe configuration for transferring heat between a first and second process streams via a heat transfer fluid comprises: at least one first process stream passage (19); at least one second process stream passage (29); and a shell (11) enclosing the first and second process stream passages (19, 29) within a volume (55). The volume (55), as a result of a heat transfer process, is fully filled with both vapour and liquid phases of the heat transfer fluid. The first and second process stream passages (19, 29) are spaced by a disengagement zone (50) enabling gravitational separation of said vapour and liquid phases and limiting accumulation of liquid phase heat transfer fluid about the first process stream passage(s) (19). Such heat exchangers can be used, among other applications, to replace a flash cooling stage in a Bayer process plant.

A heat exchanger with a uniquely designed header system which allows tubes carrying independent products to exchange heat with a product in one common shell. Multiple tube sheets provide for tubes carrying different independent products to exchange heat with the product passing through the shell side of the exchanger. The design advantages to this heat exchanger system are threefold, this exchanger design eliminates the need for multiple heat exchangers that perform the same task, it greatly reduces the size and footprint of a traditionally designed multiple heat exchanger systems, which rely on multiple independent heat exchangers to perform the same task, and lastly this new designed heat exchanger reduces the high cost of having to use multiple exchangers to obtain the same results.

Aliphatic materials and their use in passive heating and cooling applications are generally disclosed. In some embodiments, dibasic acids and esters (diesters) thereof and their use in passive heating and cooling applications are disclosed. In some embodiments, C.sub.18 dibasic acids and esters thereof are disclosed, including their use in passive heating and cooling applications. In some embodiments, various olefins, including alkenes and olefinic acids and esters, are disclosed, including their use in passive heating and cooling applications.

The invention relates to a heat exchanger for indirect heat exchange between a first medium and a second medium, comprising a shell surrounding a shell space which extends along a longitudinal axis. The shell space serves for accommodating the first medium. A tube bundle is arranged in the shell space having multiple tubes for accommodating the second medium. The tubes are helically coiled in multiple tube layers onto a core tube. The tube bundle has a multiplicity of inner tube layers, surrounding the core tube, and a multiplicity of outer tube layers, surrounding the inner tube layers. The heat exchanger discharges a part of a gaseous phase out of the shell space from the region of the inner tube layers via a gas discharge device, and/or supplies a gaseous phase into the shell space in the region of the outer tube layers via a gas supply device.

A refrigeration system and a heat exchanger are provided. The refrigeration system includes a compressor, a micro-channel condenser, a micro-channel evaporator and at least one throttling device which are connected by pipelines. Each of the micro-channel condenser and the micro-channel evaporator includes an inlet manifold and an outlet manifold, and a plurality of flat tubes being connected between the inlet manifold and the outlet manifold. The inlet manifold of the micro-channel evaporator is provided with a baffle, and the inlet manifold of the micro-channel evaporator is divided by the baffle into multiple manifold sections, and the manifold sections of the inlet manifold are isolated from each other by the baffle, and are each in communication with a certain number of the flat tubes, and are each not provided with a distribution pipe configured to distribute flow rate into the flat tubes in communication with the manifold sections.