CN112146477A - Efficient spiral baffle plate shell-and-tube heat exchanger and heat exchange method - Google Patents
Efficient spiral baffle plate shell-and-tube heat exchanger and heat exchange method Download PDFInfo
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- CN112146477A CN112146477A CN202010926604.4A CN202010926604A CN112146477A CN 112146477 A CN112146477 A CN 112146477A CN 202010926604 A CN202010926604 A CN 202010926604A CN 112146477 A CN112146477 A CN 112146477A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/007—Auxiliary supports for elements
- F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
- F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Physics & Mathematics (AREA)
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- Mechanical Engineering (AREA)
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a high-efficiency spiral baffle plate shell-and-tube heat exchanger and a heat exchange method, wherein the shell-and-tube heat exchanger comprises a shell, a shell side inlet pipe and a shell side outlet pipe which are arranged on the shell, a first tube plate and a second tube plate which are close to two sides of the shell, a left end socket and a right end socket, the left end socket is provided with the tube side inlet pipe, the right end socket is provided with the tube side outlet pipe, the shell is internally provided with a central tube and a plurality of heat exchange tubes and fixed on the left tube plate and the right tube plate, a continuous spiral baffle plate provided with jet holes is fixed on the central tube and is matched with the heat exchange tubes to form jet holes for enabling fluid to longitudinally flow, and the flow of the shell side. The invention can obviously improve the comprehensive heat exchange performance of the shell side of the shell-and-tube heat exchanger, reduce the dirt deposition of the shell side of the heat exchanger and ensure that the heat exchanger is more efficient and compact.
Description
Technical Field
The invention relates to the technical field of tubular heat exchangers, in particular to a high-efficiency spiral baffle shell-and-tube heat exchanger and a heat exchange method.
Background
The shell-and-tube heat exchanger is used as an important device for realizing the process flow, is widely applied to various industrial fields such as petroleum smelting, energy sources, chemical industry and the like, and generally accounts for 35-40% of the total investment of the device. The shell-and-tube heat exchanger is a dividing wall type heat exchanger, cold fluid and hot fluid are respectively positioned on two sides of the wall surface of a heat exchange tube bundle, and heat is transmitted to cold fluid from the hot fluid through the wall surface of the tube bundle. The shell side is provided with baffles which provide support for the tube bundle while allowing the shell side fluid to follow specific channels to improve the heat transfer characteristics of the shell side fluid. The heat exchanger has simple structure, low cost and easy cleaning of scale, and can be used at high temperature and high pressure.
Conventional segmental baffle shell and tube heat exchangers have inherent disadvantages: the shell side flow is repeatedly contracted and expanded, the flow direction is repeatedly changed by 90 degrees, high pressure loss and high pump work are caused, and meanwhile, a flow dead zone exists behind the baffle plate near the shell, so that scaling is easy to occur, and the local heat exchange coefficient is reduced. Therefore, the traditional bow-shaped baffle plate shell-and-tube heat exchanger cannot meet the requirements of modern industry on high efficiency, low resistance and controllability.
In recent years, researchers have proposed a spiral baffle plate shell-and-tube heat exchanger, which effectively solves the problems of flow dead zone, shell side scaling and the like of the arch baffle plate shell-and-tube heat exchanger. However, the turbulence intensity of the spiral flow of the shell-side fluid is smaller than that of the Z-shaped flow, so that the comprehensive heat exchange performance of the shell-and-tube heat exchanger cannot be fully exerted. Meanwhile, the existing technology for improving the heat exchange performance of shell side fluid focuses on a shell side single flow mode, and experiments show that the comprehensive heat exchange performance of the heat exchanger is greatly improved by the cross flow of the shell side fluid, particularly the shell side fluid of a shell-and-tube heat exchanger with continuous spiral baffles.
Disclosure of Invention
The invention aims to provide a high-efficiency spiral baffle plate shell-and-tube heat exchanger and a heat exchange method, which are used for solving the problems in the prior art and have the advantages of exquisite structural design, good heat exchange effect and high safety performance. The continuous spiral baffle plate is provided with jet holes, so that the shell side fluid is divided into longitudinal flow and spiral flow, and the two flows are mixed with each other, thereby improving the turbulence intensity of the shell side fluid and greatly improving the heat exchange efficiency of the heat exchanger. Meanwhile, a part of fluid longitudinally scours the tube bundle through the jet holes, so that the flow resistance of the shell side is further reduced, and the comprehensive heat exchange performance of the obtained heat exchanger is superior to that of a common shell-and-tube heat exchanger.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a high-efficiency spiral baffle plate shell-and-tube heat exchanger, which comprises a shell, a first tube plate and a second tube plate which are arranged at two ends of the shell, a left end socket and a right end socket, wherein the left end socket is hermetically arranged at the outer side of the first tube plate, the right end socket is hermetically arranged at the outer side of the second tube plate, a shell side inlet pipe and a shell side outlet pipe are respectively arranged at two sides of the shell, a tube side inlet pipe is arranged on the left end socket, a tube side outlet pipe is arranged on the right end socket, a continuous spiral baffle plate with jet holes is arranged at the center of the shell, the jet holes are circumferentially distributed on spiral plates of the continuous spiral baffle plate, the jet holes on each spiral plate are opposite to each other and coaxial, a central pipe is arranged at the center of the shell, the central pipe is used for fixing the continuous spiral, the heat exchange tube penetrates through the jet hole of the continuous spiral baffle plate in parallel and is fixed on the first tube plate and the second tube plate, and the continuous spiral baffle plate and the heat exchange tube are matched with each other to form the jet hole for fluid to flow longitudinally.
Preferably, the hole shape of the jet hole on the continuous spiral baffle plate is in a grid shape or a triangular shape or a square shape or a polygonal shape or a petal shape.
Preferably, the diameter D of the inscribed circle of the hole shape of the jet hole0Diameter of circumscribed circle D1Pitch P of jet holetThe relationship between them is: d0<D1<Pt。
Preferably, the inscribed circle of the jet hole is coaxial with the heat exchange tube.
Preferably, the heat exchange tube is supported by the inner edge bulge of the jet hole in addition to the first tube plate and the second tube plate.
Based on the high-efficiency spiral baffle plate shell-and-tube heat exchanger, the invention also provides a heat exchange method of the high-efficiency spiral baffle plate shell-and-tube heat exchanger, which comprises the following steps:
1) the fluid on the tube side flows in from the inlet tube on the tube side, exchanges heat with the fluid on the shell side through the heat exchange tube, and finally flows out from the outlet tube on the tube side;
2) fluid flows into the shell through the shell side inlet pipe, one part of the fluid washes the tube bundle in a spiral flowing mode along the spiral baffle plate, one part of the fluid washes the heat exchange tube bundle longitudinally through the jet holes on the continuous spiral baffle plate with the jet holes, and the total flowing mode of the shell side fluid is cross flow formed by combining longitudinal flow and spiral flow, and the shell side fluid flows out through the shell side outlet pipe after heat exchange with the tube side fluid.
Preferably, since the jet hole is opened on the continuous spiral baffle, the inner edge of the jet hole is also spiral, and the longitudinal flow of the part of the fluid is spiral longitudinal flow.
Compared with the prior art, the invention has the following beneficial technical effects:
(1) compared with the common shell-and-tube heat exchanger, the shell-and-tube heat exchanger of the invention has no flow dead zone, greatly reduces the probability of dirt deposition on the shell side, and prolongs the service life of the heat exchanger.
(2) The shell side fluid flow of the shell-and-tube heat exchanger is cross flow consisting of longitudinal flow and spiral flow, the probability of transverse scouring of the tube bundle by the fluid is further reduced, compared with a common continuous spiral baffle shell-and-tube heat exchanger, the vibration of the tube bundle is further reduced, and the structural stability of the heat exchanger is better.
(3) The shell side fluid flow of the shell-and-tube heat exchanger is cross flow consisting of longitudinal flow and spiral flow, the comprehensive heat exchange performance of the heat exchanger is improved, and the shell-and-tube heat exchanger used in large scale in energy and chemical industries is more efficient and compact.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a high-efficiency spiral baffle shell-and-tube heat exchanger according to the present invention;
FIG. 2 is a schematic view of the internal structure of the shell-and-tube heat exchanger with high-efficiency spiral baffles according to the present invention;
FIG. 3 is a side view of a baffle of a high efficiency spiral baffle shell and tube heat exchanger of the present invention;
FIG. 4(a) is a schematic view of a baffle plate structure of a high efficiency spiral baffle shell-and-tube heat exchanger according to the present invention;
FIG. 4(b) is a schematic view of another configuration of the baffles of the high efficiency spiral baffle shell and tube heat exchanger of the present invention;
FIG. 5 is a flow diagram of a conventional continuous helical baffle shell-and-tube heat exchanger when the shell side inlet mass flow is 0.5 kg/s;
FIG. 6 is a flow diagram of a high efficiency spiral baffle shell and tube heat exchanger of the present invention when the shell side inlet mass flow is 0.5 kg/s;
FIG. 7 is a graph showing the relationship between the variation of the heat exchanger comprehensive performance parameter h/Δ p and the shell side inlet mass flow;
FIG. 8 is a graph showing the relationship between the change in the EEC of the heat exchanger with the inlet mass flow rate, comparing to a conventional continuous spiral baffle shell-and-tube heat exchanger;
in the figure: 1. a tube side inlet tube; 2. a left end enclosure; 3. a first tube plate; 4. a shell-side inlet tube; 5. a housing; 6. a heat exchange pipe; 7. a continuous helical baffle; 8. a shell-side outlet pipe; 9. a second tube plate; 10. a right end enclosure; 11. a tube-side outlet tube; 12. a central tube; 13. and (4) a jet hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a high-efficiency spiral baffle plate shell-and-tube heat exchanger and a heat exchange method, which are used for solving the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The shell-and-tube heat exchanger with the high-efficiency spiral baffle plate in the embodiment is shown in fig. 1-8 and comprises a shell 5, a first tube plate 3 and a second tube plate 9 which are arranged at two ends of the shell 5, wherein the first tube plate 3 and the second tube plate 9 are used for fixing a heat exchange tube 6 and a central tube 12, a left end enclosure 2 which is hermetically arranged at the outer side of the first tube plate 3 and a right end enclosure 10 which is hermetically arranged at the outer side of the second tube plate 9, a shell side inlet tube 4 and a shell side outlet tube 8 are respectively arranged at two sides of the shell 5, a tube side inlet tube 1 is arranged on the left end enclosure.
As shown in fig. 2, a continuous spiral baffle plate 7 with jet holes 13 is installed in the center of a shell 5, the jet holes 13 are circumferentially distributed on spiral plates of the continuous spiral baffle plate 7, the jet holes 13 on each spiral plate are opposite to each other and coaxial, a central pipe 12 is arranged in the center of the shell 5, the central pipe 12 is used for fixing the continuous spiral baffle plate 7 and is fixed between a first pipe plate 3 and a second pipe plate 9, a plurality of parallel heat exchange pipes 6 are axially arranged in the shell 5, the heat exchange pipes 6 parallelly penetrate through the jet holes 13 of the continuous spiral baffle plate 7 and are fixed on the first pipe plate 3 and the second pipe plate 9, the continuous spiral baffle plate 7 and the heat exchange pipes 6 are mutually matched to form jet holes 13 for longitudinal flow of fluid, and each heat exchange pipe 6 is coaxial with a row of jet holes 13 through which the heat exchange pipe 6.
As shown in fig. 3, the hole shape of the jet hole 13 on the continuous spiral baffle 7 is a grid shape, a triangle shape, a square shape, a polygon shape or a petal shape; the inscribed circle of the jet hole 13 is coaxial with the heat exchange tube 6; for convenience of useThe heat exchange tube 6 is selected and arranged, and the diameter D of the 13-hole-shaped inscribed circle of the jet hole0Diameter of circumscribed circle D1Pitch P of jet holetThe relationship between them is: d0<D1<PtTherefore, the stability of the heat exchanger is ensured, and the type selection and installation of the heat exchange tube 6 are facilitated.
As shown in fig. 4, a continuous spiral baffle 7 with jet holes according to an embodiment of the present invention has a spiral angle of 15.8 °, a cycle number of 6, a number of inner edge protrusions of the jet hole of fig. 4(a) of 5, and a number of inner edge protrusions of the jet hole of fig. 4(b) of 3. The heat exchange tube is supported by the first tube plate and the second tube plate and is also supported by the inner edge bulge of the jet hole.
Based on the above-mentioned high-efficient spiral baffle shell-and-tube heat exchanger, this embodiment still provides a heat transfer method of high-efficient spiral baffle shell-and-tube heat exchanger, and the concrete process is as follows:
the fluid on the tube side enters the left end socket 2 of the heat exchanger from the inlet tube 1 on the tube side, the fluid is evenly distributed into a plurality of strands of fluid in the left end socket 2 to enter the heat exchange tubes 6, and after the heat exchange between the fluid on the tube side and the fluid on the shell side is carried out in the heat exchange tubes 6 through the tube wall, the fluid is converged into the right end socket 10 and flows out through the outlet tube 11 on the tube side. The shell side fluid enters the shell side of the heat exchanger from a shell side inlet pipe 4, wherein a part of the fluid scours the tube bundle in a spiral flow mode along the spiral baffle plate, a part of the fluid scours the tube bundle longitudinally through a jet hole 13 between the baffle plate and the heat exchange tube 6, the shell side fluid performs heat exchange with the fluid in the heat exchange tube 6 generally in a cross flow mode formed by spiral flow and longitudinal flow, the turbulence degree of the shell side fluid is enhanced, meanwhile, the pressure drop in a pure spiral flow mode can be reduced by a part of the fluid in a longitudinal flow mode, so that the comprehensive heat exchange performance of the shell side fluid is improved, and the shell side fluid flows out of the heat exchanger from a shell side outlet pipe 8 after heat exchange is completed.
The numerical research on the shell-and-tube heat exchanger is an experimental research depending on a computer. At present, researchers develop a large amount of numerical experiment research by means of mature commercial software ANSYS, and the method for researching the flowing heat transfer characteristic of the shell-and-tube heat exchanger is quite mature. Through numerical research, the invention is a high-efficiency spiral baffle plate shell-and-tube heat exchanger, and the contrast object is the traditional continuous spiral baffle plate shell-and-tube heat exchanger. In the research, a variable control method is adopted, and the two heat exchangers keep the same shell structure size, shell side inlet pipe structure size, shell side outlet pipe structure size, heat exchange pipe arrangement mode, and the same baffle plate helix angle, spiral cycle number, installation mode and the like. The number of projections on the inner edge of the jet hole of the high-efficiency spiral baffle shell-and-tube heat exchanger of the embodiment is 3, that is, the structure of the baffle is shown in fig. 4 (b). In a numerical experiment, water is used as a heat exchange medium of a shell pass, and the flowing heat exchange characteristics of the shell sides of two heat exchangers are simulated when the inlet flow of the heat exchanger is 0.5-1.5 kg/s under the condition that the inlet temperature of the heat exchanger and the wall temperature of a heat exchange tube are not changed. The inlet of the model is a speed inlet, and the inlet temperature is 300K. The outlet is a pressure outlet and inhibits backflow. The shell is a heat insulation wall surface with good heat preservation. The baffle is configured as a coupling wall that participates in convective heat transfer from the fluid to the baffle and heat conduction within the solid.
As shown in fig. 4 and fig. 5, the flow charts of the conventional continuous helical baffle shell-and-tube heat exchanger and the high-efficiency helical baffle shell-and-tube heat exchanger of the present embodiment are respectively shown when the inlet mass flow is 0.5 kg/s. It can be clearly seen from the two figures that the flow of the fluid on the shell side of the shell-and-tube heat exchanger of the traditional continuous spiral baffle plate is in a pure spiral flow state, the flow of the fluid on the shell side of the shell-and-tube heat exchanger of the high-efficiency spiral baffle plate is a cross flow formed by a spiral flow and a longitudinal flow, the longitudinal flow longitudinally flushes the tube bundle, the boundary layer on the surface of the tube bundle is damaged, the turbulence intensity of the fluid on the shell side is enhanced, meanwhile, the pressure drop is reduced by the flow mode of the longitudinal flow, and the comprehensive heat exchange performance on the shell side is enhanced by the cross.
The heat exchange amount Q of the shell side fluid and the wall surface of the heat exchange tube is defined as:
Q＝M·cp(Tin-Tout)
in the formula, cpIs the specific heat capacity of the shell side fluid and has the unit of J/(kg.K), M is the mass flow rate of the shell side fluid and has the unit of kg/s, Tin、ToutThe inlet and outlet temperatures, respectively, of the shell side fluid are in K.
The shell-side fluid convective heat transfer coefficient h is defined as:
wherein A is the total heat transfer area, Δ TmWhich is the log mean temperature difference between the tube wall and the fluid, they are defined as:
A＝Nt·π·d·L
in the formula, NtD is the outer diameter of the heat exchange tubes, L is the length of the heat exchange tube bundle, delta Tmax、ΔTminThe maximum and minimum temperature difference between the pipe wall and the fluid, respectively.
The pressure drop at the shell side of the heat exchanger is defined as:
Δp＝pin-pout
the EEC is used for evaluating the ratio of the gain amplification after heat exchange enhancement of the heat exchanger to the consumed pump work amplification, if the value is larger than 1, the improved heat exchanger is effective, and the EEC is defined as follows:
wherein Q is the heat exchange quantity of the shell-and-tube heat exchanger with the efficient spiral baffle plate in the embodiment, and Q is0The heat exchange quantity of the traditional continuous spiral baffle plate shell-and-tube heat exchanger is P, the power consumption of the high-efficiency spiral baffle plate shell-and-tube heat exchanger in the embodiment is P0The power consumption of the traditional continuous spiral baffle shell-and-tube heat exchanger is reduced.
As shown in FIG. 6, h/Δ P of the high-efficiency spiral baffle shell-and-tube heat exchanger of the present embodiment and the conventional continuous spiral baffle shell-and-tube heat exchanger are shown. h/delta P is the heat exchange coefficient under unit pressure drop and is used for representing the comprehensive heat exchange performance of the heat exchanger. As can be seen from FIG. 6, h/delta P of the two heat exchangers is reduced along with the increase of inlet mass flow, and simultaneously, under the same inlet mass flow condition, h/delta P of the high-efficiency spiral baffle plate shell-and-tube heat exchanger is higher than that of the traditional continuous spiral baffle plate shell-and-tube heat exchanger, and the average h/delta P of the high-efficiency spiral baffle plate shell-and-tube heat exchanger is 12.78% higher than that of the traditional continuous spiral baffle plate shell-and-tube heat exchanger within the flow range of 0.5-1.5 kg/s, thereby showing that the high-efficiency spiral baffle plate shell-and-tube heat exchanger of the.
As shown in fig. 7, for the relationship between the efficiency coefficient and the inlet mass flow obtained by comparing the high-efficiency spiral baffle shell-and-tube heat exchanger of this embodiment with the conventional continuous spiral baffle shell-and-tube heat exchanger, it can be seen from the figure that the efficiency coefficient is greater than 1, which indicates that the high-efficiency spiral baffle shell-and-tube heat exchanger of the present invention is more efficient than the conventional continuous spiral baffle shell-and-tube heat exchanger.
The principle and the implementation mode of the invention are explained by applying specific examples, and the description of the above examples is only used for helping understanding the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.
Claims (7)
1. A high-efficient spiral baffling board shell and tube heat exchanger which characterized in that: the heat exchanger comprises a shell, a first tube plate and a second tube plate which are arranged at two ends of the shell, a left seal head and a right seal head which are arranged at the outer sides of the first tube plate and are in sealing installation, a shell side inlet pipe and a shell side outlet pipe are respectively arranged at two sides of the shell, a tube side inlet pipe is arranged on the left seal head, a tube side outlet pipe is arranged on the right seal head, a continuous spiral baffle plate with jet holes is arranged at the center of the shell, the jet holes are circumferentially distributed on spiral plates of the continuous spiral baffle plate, the jet holes on each spiral plate are opposite to each other and coaxial, a central tube is arranged at the center of the shell and is used for fixing the continuous spiral baffle plate and is fixed between the first tube plate and the second tube plate, a plurality of parallel heat exchange tubes are axially arranged in the shell and parallelly penetrate through the jet holes of the, and the continuous spiral baffle plate and the heat exchange tube are mutually matched to form a jet hole for fluid to longitudinally flow.
2. A high efficiency spiral baffle shell and tube heat exchanger as set forth in claim 1 wherein: the hole shape of the jet hole on the continuous spiral baffle plate is in a folded grid shape, a triangular shape, a square shape, a polygonal shape or a petal shape.
3. A high efficiency spiral baffle shell and tube heat exchanger as set forth in claim 1 wherein: the diameter D of the inscribed circle of the hole shape of the jet hole0Diameter of circumscribed circle D1Pitch P of jet holetThe relationship between them is: d0<D1<Pt。
4. A high efficiency spiral baffle shell and tube heat exchanger as set forth in claim 1 wherein: the inscribed circle of the jet hole is coaxial with the heat exchange tube.
5. A high efficiency spiral baffle shell and tube heat exchanger as set forth in claim 1 wherein: the heat exchange tube is supported by the first tube plate and the second tube plate and is also supported by the inner edge of the jet hole in a protruding mode.
6. A method of exchanging heat for a high efficiency spiral baffle shell and tube heat exchanger as recited in any one of claims 1-5 comprising the steps of:
1) the fluid on the tube side flows in from the inlet tube on the tube side, exchanges heat with the fluid on the shell side through the heat exchange tube, and finally flows out from the outlet tube on the tube side;
2) fluid flows into the shell through the shell side inlet pipe, one part of the fluid washes the tube bundle in a spiral flowing mode along the spiral baffle plate, one part of the fluid washes the heat exchange tube bundle longitudinally through the jet holes on the continuous spiral baffle plate with the jet holes, and the total flowing mode of the shell side fluid is cross flow formed by combining longitudinal flow and spiral flow, and the shell side fluid flows out through the shell side outlet pipe after heat exchange with the tube side fluid.
7. A method for exchanging heat in a high efficiency spiral baffle shell and tube heat exchanger as recited in claim 6 wherein: because the jet hole is arranged on the continuous spiral baffle plate, the inner edge of the jet hole is also in a spiral shape, and the longitudinal flow of a part of fluid is spiral longitudinal flow.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114212233A (en) * | 2021-10-29 | 2022-03-22 | 中国船舶重工集团公司第七一九研究所 | Inter-board cooler and ship centralized cooling system |
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Application publication date: 20201229 |