A heat exchanger including: a heat exchanger main body forming a flow path through which a fluid circulates; heat transfer tubes arranged side by side so as to extend in an extending direction of the flow path; and a baffle plate group having a plurality of baffle plates provided with gaps therebetween in the extending direction of the flow path while supporting the heat transfer tubes. The baffle plates are provided so as to each occupy only a portion of the flow path cross section when viewed from the extending direction of the flow path, and the baffle plates of the baffle plate group are provided such that at least a portion of mutually occupied areas do not overlap, and that the entire area of the flow path cross section is occupied by combining the mutually occupied areas, as seen from the extending direction of the flow path.

An apparatus includes an integrated heat exchanger and reactor module. The integrated heat exchanger and reactor module includes a heat exchanger channel, and a reactor channel which is thermally coupled to the heat exchanger channel. The reactor channel includes a layer of catalyst material that is configured to produce hydrogen by endothermic catalytic decomposition of ammonia, which flows through the reactor channel, using thermal energy that is absorbed by the reactor channel from the heat exchanger channel.

A return waterbox for a heat exchanger, such as a shell-and-tube heat exchanger, is provided. The return waterbox may include an insert configured to direct a fluid flow(s) in the return waterbox. In some embodiments, such as in a two-pass heat exchanger, the insert can be configured to receive water from one portion of the heat exchanger tubes in the first pass and redirect the received water to another portion of the heat exchanger tubes in the second pass.

The present invention relates to a heat exchanger (2) having a jacket (10) through which a first medium (A) can flow and which has at least one first inlet (11) and at least one first outlet (12), at least one tube (30) through which a second medium (B) can flow, the tube (30) being guided through the jacket (10) and having at least one second inlet (31) and at least one second outlet (32), wherein a deflection segment (50) or a plurality of deflection segments (50) are arranged in a row in a longitudinal axis (X) in the jacket (10), wherein the deflection segment (50) is formed from at least two partial sections (51, 52), which are arranged so as to overlap and cross, in areas, transverse to the longitudinal axis (X).

A coil-wound heat exchanger with mixed refrigerant shell side cooling that is adapted to reduce radial temperature maldistribution by providing tube sheets at one end of a warm bundle that are each connected to tube sheets in a single circumferential zone and are in fluid flow communication with a control valve. Tube sheets at the other end of the warm bundle are each connected to tube sheets in a single radial section and in multiple circumferential zones. A temperature sensor is provided in each circumferential zone. When a temperature difference is detected, one or more of the control valves is adjusted to reduce the temperature difference.

An eddy fluid heat exchange device comprises a compound tube assembly mounted with an eddy guiding structure. The compound tube assembly comprises an outer tube mounted with an inner tube. The outer tube and the inner tube have an eddy passage along an axis of the inner tube formed therebetween. The outer tube has a guiding exit at one end of the eddy passage. The eddy guiding structure is mounted at another end of the eddy passage, having a guiding entrance. Entering from the guiding entrance, high pressure fluid forms eddies surrounding the inner tube when flowing through the eddy guiding structure. A flowing path of the high pressure fluid in the eddy passage extends, simplifying structures and lowering costs of production and maintenance. Besides, increasing a heat transfer area between the high pressure fluid and the outer tube or the inner tube improves the heat transfer efficiency.

An eddy fluid heat exchange device comprises a compound tube assembly mounted with an eddy guiding structure. The compound tube assembly comprises an outer tube mounted with an inner tube. The outer tube and the inner tube have an eddy passage along an axis of the inner tube formed therebetween. The outer tube has a guiding exit at one end of the eddy passage. The eddy guiding structure is mounted at another end of the eddy passage, having a guiding entrance. Entering from the guiding entrance, high pressure fluid forms eddies surrounding the inner tube when flowing through the eddy guiding structure. A flowing path of the high pressure fluid in the eddy passage extends, simplifying structures and lowering costs of production and maintenance. Besides, increasing a heat transfer area between the high pressure fluid and the outer tube or the inner tube improves the heat transfer efficiency.

A microchannel heat exchanger structure with a nozzle and a working method thereof. The microchannel heat exchanger structure with a nozzle, includes a first heat exchange portion, a second heat exchange portion, and at least one nozzle portion between the first heat exchange portion and the second heat exchange portion, the first heat exchange portion having a high-pressure heat exchange channel, a first micro-fin array being provided inside the high-pressure heat exchange channel, and the second heat exchange portion having a low-pressure heat exchange channel, the high-pressure heat exchange channel and the low-pressure heat exchange channel being in communication through at least one nozzle disposed in the nozzle portion. The heat exchanger structure has a good heat exchange effect and can achieve a better heat flux during heat exchange.

A pipe temperature adjusting system includes: a liquid conducting pipe; a heat-insulating cover covering the liquid conducting pipe in such a manner as to define a cylindrical space between the heat-insulating cover and the liquid conducting pipe; a heat exchange flow path disposed in the cylindrical space and along the liquid conducting pipe and allowing a heat exchange medium to flow through the heat exchange flow path; and a pump configured to supply the heat exchange medium into the heat exchange flow path. Covering the liquid conducting pipe with the cylindrical space and causing the heat exchange medium to flow through the heat exchange flow path in the cylindrical space adjusts the internal temperature of the cylindrical space to thereby adjust the temperature of the liquid conducting pipe.

The invention relates to a fuel cell system (10) comprising at least one fuel cell stack (11) having an anode section (12) and a cathode section (13), an ejector (14), a fuel mixture line (15) for conveying a fuel mixture—containing primary fuel and secondary fuel—from the ejector (14) to the anode section (12), a primary fuel line (16) for supplying the primary fuel to the ejector (14), and a recirculation line (17) for returning the secondary fuel from the anode section (16) to the ejector (14), wherein at least sections of the primary fuel line (16) extend through a heat exchange volume (18) within the recirculation line (17) for a heat-transmitting connection between the secondary fuel and the primary fuel.