An apparatus for supplying and dissipating heat, for carrying out reactions and for mixing and dispersing flowing media in a housing with an internal diameter for a medium and comprising internal fittings made up of a bundle of tubes with an external diameter or made up of other elongate elements oriented parallel to the longitudinal axis of the housing is provided. The apparatus includes crosspieces or crosspiece layers installed crosswise between the elongate elements. The crosspieces are inclined in relation to the longitudinal axis of the housing and are not in contact. After axially successive crosspieces, or a length, the crosspieces are installed between the tubes and turned by preferably 90°. A heat-transfer medium can flow in a co-current or counter-current mode. This results in a mixer/heat exchanger or reactor with an extremely large heat-transfer capacity and almost plug flow.

An apparatus for supplying and dissipating heat, for carrying out reactions and for mixing and dispersing flowing media in a housing with an internal diameter for a medium and comprising internal fittings made up of a bundle of tubes with an external diameter or made up of other elongate elements oriented parallel to the longitudinal axis of the housing is provided. The apparatus includes crosspieces or crosspiece layers installed crosswise between the elongate elements. The crosspieces are inclined in relation to the longitudinal axis of the housing and are not in contact. After axially successive crosspieces, or a length, the crosspieces are installed between the tubes and turned by preferably 90°. A heat-transfer medium can flow in a co-current or counter-current mode. This results in a mixer/heat exchanger or reactor with an extremely large heat-transfer capacity and almost plug flow.

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 heat exchanger includes: a heat exchanger body, the heat exchanger body being provided with first micro-channels and second micro-channels; and a header assembly, including a first header and a second header. The first header is provided with a first header channel which is used for providing a first refrigerant flow to the first micro-channels and/or collecting a first refrigerant flow flowing through the first micro-channels, and the second header is provided with a second header channel which is used for providing a second refrigerant flow to the second micro-channels and/or collecting a second refrigerant flow flowing through the second micro-channels, and heat is exchanged between the first refrigerant flow flowing through the first micro-channels and the second refrigerant flow flowing through the second micro-channels.

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.

An aftercooler device with ribs for aligning cooling tubes in a twelve-pass configuration provides a heat exchanger that transfers optimal amount of heat from combustion air through use of a tortuous, back-and-forth arrangement of twelve rows of tubes carrying a coolant fluid, and creating agitation therein for efficient cooling. The cooling tubes are organized into separate rows through heat exchanger body. A top cover fastens to the top end of heat exchanger body. The top cover includes six top ribs that segregate cooling tubes into six rows at top end of the heat exchanger. Four of the top ribs are linear, and two of the top ribs have angled configurations. A bottom cover fastens to the bottom end of the heat exchanger. The top cover includes five bottom ribs that segregate the cooling tubes into six rows at bottom end of heat exchanger. The bottom ribs have a linear configuration.

An aftercooler device with ribs for aligning cooling tubes in a twelve-pass configuration provides a heat exchanger that transfers optimal amount of heat from combustion air through use of a tortuous, back-and-forth arrangement of twelve rows of tubes carrying a coolant fluid, and creating agitation therein for efficient cooling. The cooling tubes are organized into separate rows through heat exchanger body. A top cover fastens to the top end of heat exchanger body. The top cover includes six top ribs that segregate cooling tubes into six rows at top end of the heat exchanger. Four of the top ribs are linear, and two of the top ribs have angled configurations. A bottom cover fastens to the bottom end of the heat exchanger. The top cover includes five bottom ribs that segregate the cooling tubes into six rows at bottom end of heat exchanger. The bottom ribs have a linear configuration.

Heat exchangers, heat exchanger systems, and hypersonic vehicles are provided. For example, a heat exchanger is provided that comprises a first chamber for receipt of a flow of cool fluid and a second chamber for receipt of a flow of hot fluid. The heat exchanger further comprises a buffer fluid flowpath for circulation of a buffer fluid therethrough. The buffer fluid circulates within the buffer fluid flowpath disposed between the first chamber and the second chamber to transfer heat from the hot fluid to the cool fluid. In certain embodiments, a hypersonic vehicle comprises such a heat exchanger, and the cool fluid is cryogenic or near-cryogenic fuel of the hypersonic vehicle and the hot fluid is engine bleed air from a hypersonic propulsion engine of the vehicle.

An aspect of the present disclosure provides a flow channel cap plate that constitutes a combustion chamber assembly including a combustion chamber and a plurality of insulating pipelines disposed on left/right side surfaces of the combustion chamber, the flow channel cap plate forming an insulating flow channel by covering the front surface of the combustion chamber, the flow channel cap plate including an inlet part including an inlet, and an inlet flow channel cap covering the front surface of the combustion chamber, an inlet space part is formed by covering the front surface of the combustion chamber with the inlet flow channel cap, the inlet is an entrance of the insulating flow channel, the plurality of insulating pipelines include a plurality of inlet insulating pipelines, and the inlet space part is a space that communicates the inlet with the plurality of inlet insulating pipelines.

An additively manufactured heat exchanger configured to transfer heat between a first fluid and a second fluid includes a first channel with a first wall configured to port flow of a first fluid and a second channel with a second wall configured to port flow of a second fluid. The heat exchanger also includes a barrier channel containing unprocessed build powder provided by the additive manufacturing process and is located between the first wall and the second wall. The barrier channel is configured to prevent mixing of the first fluid and the second fluid when one of the first wall and the second wall ruptures.