摘要:
A heat transfer system includes a steam chamber that communicates in an open-loop arrangement with a first steam source for supplying steam to the steam chamber, the steam chamber including a steam exit for supplying steam to air at atmospheric pressure. A heat transfer tube communicates in a closed-loop arrangement with a second steam source for supplying steam to an interior surface of the heat transfer tube, the heat transfer tube vaporizing condensate forming within the heat transfer system back to steam that is supplied to the air via the steam exit. The outer surface of the heat transfer tube is configured to contact the condensate and vaporize the condensate back into steam, wherein the heat transfer tube includes a plurality of pockets formed on the outer surface of the tube, each pocket including a pocket exit/entry portion having a smaller cross-sectional area than the cross-sectional area of the pocket at a root portion thereof adjacent the outer surface of the tube.
摘要:
An evaporator with a cool storage function includes a plurality of flat refrigerant flow tubes and at least one cool storage material container. The at least one cool storage material container includes a container main body and a plurality of convex portions. The container main body has a first wall and a second wall opposite to the first wall which are substantially parallel to a plane including a longitudinal direction and a width direction. The first wall and the second wall are connected to adjacent refrigerant flow tubes among the plurality of refrigerant flow tubes, respectively. The plurality of convex portions are provided on the first wall and the second wall to protrude outwardly from the first wall and the second wall. Two adjacent convex portions among the plurality of convex portions form each of condensed water drain passages therebetween.
摘要:
Reactor vessels with pressure and heat transfer features for producing hydrogen-based fuels and structural elements, and associated systems and methods. A representative reactor system includes a first reaction zone and a heat path, a reactant source coupled to the first reaction zone, and a first actuator coupled to cyclically pressurize the first reaction zone. A second reaction zone is in fluid communication with the first, a valve is coupled between the first and second reaction zones to control a flow rate therebetween, and a second actuator is coupled in fluid communication with the second reaction zone to cyclically pressurize the second reaction zone. First and second heat exchangers direct heat from products to reactants in the reaction zones. A controller controls the first and second actuators in a coordinated manner based at least in part on a flow rate of the second product from the second reaction zone.
摘要:
A heat exchanger is provided. The heat exchanger may include a shell; a first pipe that guides a first fluid into the shell; a plurality of spiral pipe portions, through which a second fluid, which exchanges heat with the first fluid, may pass, that have different distances from a central axis; and a second pipe that guides the first fluid outside of the shell, in which an inner spiral pipe portion of the plurality of spiral pipe portions, which is closest to a central axis, and an outer spiral pipe portion, which is farthest from the central axis, are connected by a first connection tube, and a plurality of intermediate spiral pipes, which is farther from the central axis than the inner spiral pipe portion and closer to the central axis than the outer spiral pipe portion, is connected by a second connection tube, such that the plurality of spiral pipe portions is connected while minimizing a number of connection tubes and a reduction in performance that may be generated when a difference in length of a plurality of paths is large, by minimizing a difference in length of the paths formed by the plurality of spiral pipe portions and the connection tubes.
摘要:
The invention relates to a heat exchanger including at least one elongate tube (3) adapted for the flow of a coolant, and at least one collection box (5) for such a coolant and into which one end of said tube leads, wherein the collection box includes a collector (9) having an element for receiving the end of said tube, the receiving element including a portion (19) projecting inwardly and shaped into an area for supporting said tube. According to the invention, the receiving element further includes a connection portion (21) for the inwardly projecting portion opposite the collector, and said connection portion protrudes on the side of the collector opposite the collection box such that said inwardly projecting portion (19) and said connection portion (21) have mutually opposite projecting directions.
摘要:
Heat exchanger having a housing, having a fluid inlet and having a fluid outlet, wherein the heat exchanger is in fluid communication via the fluid inlet and the fluid outlet with a fluid circuit, having a flow-guiding element in the interior of the housing, wherein the housing is formed from a substantially planar housing upper part and a substantially trough-like housing lower part, wherein the housing lower part has a base region and an encircling side wall, wherein the housing lower part is formed by a supporting structure and an encasement and the supporting structure is at least partially surrounded by the encasement, wherein the supporting structure is formed from a metallic material, and the encasement is formed substantially from a plastic, wherein the housing upper part is formed from a plastic and the housing lower part is connected to the housing upper part substantially by means of plastic-on-plastic contact.
摘要:
Compression molding of metals is used to make microchannel heat exchangers. Heat transfer can be improved by employing controlled microchannel surface roughness. Flux-free bonding is achieved using a eutectic thin-film intermediate layer. Seals are leak-tight, mechanically strong, and uniform across multiple contact areas. The metal heat exchangers may be mass-produced inexpensively, and are useful for applications including the cooling of computer chips and other high-power electronic devices, air conditioning, refrigeration, condenser plates, radiators, fuel cell heat management, and instant water heating.
摘要:
A heat exchanger provided with a plurality of plate-like fins 2 arranged in parallel with a predetermined interval and a plurality of flat-shaped heat transfer pipes 3 inserted in a direction orthogonal to said plate-like fins 2 and through which a refrigerant flows, in which said heat transfer pipe 3 has an outside shape with a flat outer face arranged along an air flow direction and a section substantially in an oval shape and first and second refrigerant flow passages 31a, 31b made of two symmetric and substantially D-shaped through holes having a bulkhead 32 between the two passages inside, which is bonded to said plate-like fin 2 by expanding diameters of said first and second refrigerant flow passages 31a, 31b by a pipe-expanding burette ball.
摘要:
A heat exchanger is provided having a tube block having a plurality of essentially parallel tubes for carrying a temperature control fluid, wherein at least the ends of the tubes are connected to one another. In addition, the heat exchanger comprises at least one header box that is designed to receive a temperature control fluid from the tubes, wherein the at least one header box has an inside height that corresponds within a tolerance range to the height of the ends of the tubes and wherein the header box is placed over the ends of the tubes and is joined thereto in a material-to-material fashion.
摘要:
Aspects of this disclosure enhance elimination problems that freezing sulfur creates with gas-liquid parallel plate separators by integrally heating the parallel plate gas-liquid separator assembly. Through integral heating the duration of time that the separator apparatus remains above the freezing temperature of elemental sulfur is prolonged, thereby, allowing the opportunity for residual liquid sulfur to drain from the parallel plate assembly during upsets in unit operations and after a sulfur recovery unit shutdown event, thereby reducing or eliminating the operation and maintenance problems that may occur with existing separator designs.