A flow reactor is structured to increase the overall heat transfer coefficient, which represents the efficiency of heat exchange with respect to a reactive fluid to be treated. This flow reactor is provided with three flow passages, which are a first flow passage, a second flow passage, and a third flow passage which spirally circulate within a space formed between an inner tube and an outer tube. The flow passages are compartmented by an inner heat transfer body and an outer heat transfer bodies. The heat transfer bodies spirally circulate, have a screw-like cross-sectional shape in an axial cross-sectional view, and are assembled in a screw-like configuration. By changing the shapes of a male-thread portion and a female-thread portion, the flow passage area of the first flow passage is changed, the second flow passage and the third flow passage are spirally formed, and heat exchange and reaction take place through the heat transfer bodies.

The subject matter of this specification can be embodied in, among other things, a heat exchanger module that includes a tubular housing, a first fluid conduit, a second fluid conduit, fluidically isolated from the first fluid conduit, a thermal conductor configured to convey heat energy between the first fluid conduit and the second fluid conduit, a first fluid connector assembly, the first fluid connector assembly having a first fluid port fluidically connected to the first fluid conduit, and a second fluid port fluidically connected to the second fluid conduit, and a second fluid connector assembly, the second fluid connector assembly having a third fluid port fluidically connected to the first fluid conduit, and a fourth fluid port fluidically connected to the second fluid conduit.

A counter-flow heat exchanger comprising a heat exchanger core including an inner wall and an outer wall radially outward and spaced apart from the inner wall. A first flow path is defined within the inner wall and a second flow path is defined between the inner wall and the outer wall. The heat exchanger core includes a primary flow inlet, a primary flow outlet and a middle portion therebetween. The inner and outer walls are concentric at the primary flow inlet of the heat exchanger core. The inner wall defines a first set of channels extending axially from the primary flow inlet to the middle portion of the heat exchanger core diverging away from a radial center of the heat exchanger core. The inner wall and the outer wall define a second set of channels extending axially from the primary flow inlet to the middle portion of the heat exchanger core converging toward the radial center of the heat exchanger core.

A heat exchanger includes a plurality of tube assemblies. Each tube assembly includes an inner tube extending within an outer tube and configured for the flow of a first fluid therein. The inner tube and the outer tube are sized to facilitate capillary action fluid flow of a second fluid in an annular space between an outer surface of the inner tube and an inner surface of the outer tube, facilitating indirect heat exchange of the second fluid, through the inner tube and indirect heat exchange of the second fluid through the outer tube.

A heat exchanger includes a hollow pillar shaped honeycomb structure, a first outer cylindrical member, an inner cylindrical member, an upstream cylindrical member, a cylindrical connecting member, and a downstream cylindrical member. The heat exchanger further includes a valve mechanism having an on-off valve located on a downstream end portion side of the inner cylindrical member. The valve mechanism is rotatably supported by a bearing arranged on a radially outer side of the downstream cylindrical member, and the on-off valve is fixed to a shaft arranged so as to penetrate the downstream cylindrical member and the inner cylindrical member.

A heat exchanging member including a hollow pillar shaped honeycomb structure having partition walls defining cells, the cells penetrating from a first end face to a second end face to form flow paths for a first fluid, an inner peripheral wall, and an outer peripheral wall; and a covering member being configured to cover the outer peripheral wall of the pillar shaped honeycomb structure. The heat exchanging member is configured to perform heat exchange between the first fluid and a second fluid flowing through an outer side of the covering member. In the heat exchanging member, in a cross section of the pillar shaped honeycomb structure perpendicular to a flow path direction of the first fluid, the cells are radially provided, and each of the inner peripheral wall and the outer peripheral wall has a thickness larger than that of each of the partition walls.

A flow-guiding rod includes a cooling channel provided in a rod portion of the flow-guiding rod, and a coolant inlet pipe and a coolant outlet pipe provided on end(s) of the flow-guiding rod. The coolant inlet pipe and the coolant outlet pipe are communicated with the cooling channel.

A heat exchanger includes a plurality of tube assemblies. Each tube assembly includes an inner tube extending within an outer tube and configured for the flow of a first fluid therein. The inner tube and the outer tube are sized to facilitate capillary action fluid flow of a second fluid in an annular space between an outer surface of the inner tube and an inner surface of the outer tube, facilitating indirect heat exchange of the second fluid, through the inner tube and indirect heat exchange of the second fluid through the outer tube.

A tube-in-tube heat exchanger utilizes a selectively permeable tube having a selective permeable layer to allow the refrigerant to transfer into an ionic liquid to generate heating or cooling. The ionic liquid then provides heating or cooling to a heat transfer fluid through a non-permeable layer or tube. The system may be configured as a shell and tube design, with the third fluid free to flow on the outside of the shell, or as a shell and tube-in-tube, with a central tube containing a first liquid, a second tube containing a second liquid, and an outer shell containing the third liquid. The selectively permeable tube may include an anion or cation selectively permeable layer and this layer may be supported by a support layer or tube.

A heat exchange device may include a first pipe including a first inlet, a first outlet, and a first sidewall extending therebetween; a second pipe including a second inlet, a second outlet, and a second sidewall extending therebetween; and a plurality of dimples extending between the first sidewall and the second sidewall. The second sidewall may surround and extend about the first sidewall, the first sidewall may define a first fluid passage configured to permit flow of a first fluid, and the second sidewall and the first sidewall may define a second fluid passage configured to permit flow of a second fluid.