CN111551061A - Heat exchanger for exchanging heat externally by multiple different fluids - Google Patents
Heat exchanger for exchanging heat externally by multiple different fluids Download PDFInfo
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- CN111551061A CN111551061A CN202010446062.0A CN202010446062A CN111551061A CN 111551061 A CN111551061 A CN 111551061A CN 202010446062 A CN202010446062 A CN 202010446062A CN 111551061 A CN111551061 A CN 111551061A
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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
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
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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
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
Abstract
The invention provides a heat exchanger for exchanging heat outwards by multiple different fluids, which comprises at least three heat exchange modules, wherein the heat exchange surfaces of the heat exchange modules face inwards, the edges of adjacent heat exchange modules are connected, and a polygonal fluid channel is formed among the heat exchange surfaces of at least three heat exchange modules. The invention provides a heat exchanger, which can realize the heat exchange of one or more fluids to the outside, for example, the heat exchange is carried out by flowing the fluid through a fluid channel. The heat exchange structure can realize the outward common heat exchange of more than 6 fluids, and has wide application range.
Description
Technical Field
The invention relates to the field of heat exchangers, in particular to a heat exchange module which can be freely combined to realize heat exchange of the module and common external heat exchange.
Background
The heat exchanger is an advanced heat exchanger, is mainly applied to the heat exchange transmission between liquid and between vapor and liquid, so that heat is transmitted to the fluid with lower temperature from the fluid with higher temperature or the temperature of the fluid with lower temperature is raised by absorbing the heat, thereby achieving the purpose of rapid heat exchange, and is widely applied to the fields of petrochemical industry, biological pharmacy, food processing, ship industry and the like. Such as heat recovery, cooling, condensation and reboiling in an amine making system. Such as heat recovery, heating and cooling in a crude oil desalting and dewatering system. Such as condensation, heating and cooling, heat recovery and reboiling of olefins, aromatics, aldehydes, acids, ethers, esters, ketones, and halogens, and the like. In the fertilizer processing production, the method is applied to nitrogen, carbon dioxide gas cooling and the like. In the heating and ventilation industry, the heat pump is widely applied to heating systems with steam-water and water-water heat exchange and hot water supply systems with steam-water and water-water heat exchange. With the continuous progress of industry and the energy conservation and emission reduction under the environmental protection requirement, and under the high requirement of reducing the occupied area of equipment and the low cost of buildings, the requirement on a heat exchanger is higher and higher.
At present, the traditional shell-and-tube heat exchanger is widely applied to the fields of petrochemical industry, biological medicine, food processing production and the like. But the heat exchange efficiency is low due to the large volume, the energy-saving effect is poor and the like, so that the working condition requirements of various industries are not satisfied. Taking a national standard GB151-1999 shell-and-tube heat exchanger as an example, the appearance of the traditional shell-and-tube heat exchanger is a circular cylinder, the structure of the traditional shell-and-tube heat exchanger consists of an end socket, a cylinder body, a heat transfer pipe, a baffle plate, a saddle-shaped support, a connecting pipe and the like, the heat transfer pipe is a straight pipe, the wall thickness is more than 2mm, the pipe pass is mostly a single pass, the pipe is longer, no layered turbulent flow exists in the pipe pass, the heat exchange area in unit volume is. The structure is not easy to disassemble, so that the cleaning is not easy after scaling. Moreover, the structure is not compact, the occupied area is large, and the requirement on equipment building arrangement is high.
In a traditional fixed tube-plate heat exchanger, two different media, namely a tube pass and a shell pass, realize heat exchange through a heat exchange tube, wherein one medium passes through the tube pass, and the other medium passes through the shell pass. In actual engineering, however, the following are often encountered: 1) two media are required to exchange heat with each other; 2) shell side media with different pressures and temperatures or which cannot be mixed with each other exchange heat with the same medium; 3) when energy-saving transformation is carried out, and when the original fixed tube plate type heat exchanger cannot meet higher heat exchange requirements, the common method is to redesign and manufacture a heat exchanger with a larger diameter or manufacture extra heat exchangers to be connected in parallel or in series to meet new use requirements, but abandon the original heat exchanger, which is definitely a waste.
Disclosure of Invention
One of the main purposes of the invention is to provide a heat exchange module, which is combined into a new heat exchanger to realize the mutual heat exchange of different media in the same module or the heat exchange of different media and a third medium, thereby solving the working conditions of complex and multi-strand media and meeting the requirement of the reuse of the original fixed tube plate heat exchanger in the reconstruction.
In order to achieve the purpose, the invention adopts the following technical scheme:
the heat exchanger comprises a heat exchange module, wherein the heat exchange module comprises two cube-shaped pipe boxes which are arranged in parallel, namely a first pipe box and a second pipe box, each pipe box comprises an upper surface, a lower surface and four side surfaces, the four side surfaces comprise a first side surface and a second side surface, the first side surface and the second side surface form a first edge part, the first side surface is not provided with a heat insulation layer, and the second side surface is provided with a heat insulation layer; the heat exchange module further comprises a connecting component, one part of the connecting component is arranged at the first edge position of the first side surface of the first tube box, the other part of the connecting component is arranged at the first edge position of the first side surface of the second tube box, the edges of the first side surfaces of the first tube box and the second tube box are adjacent, so that the first tube box and the second tube box can rotate around the connecting component, the second side surfaces of the two tube boxes are attached together, so that heat is insulated between the inside of the first tube box and the inside of the second tube box, and the first side surface and the second side surface form a continuous heat exchange surface for heat exchange to the outside;
the heat exchanger comprises at least three heat exchange modules, the heat exchange surfaces of the heat exchange modules face inwards, the edges of adjacent heat exchange modules are connected, and a multi-deformation fluid channel is formed between the heat exchange surfaces of the at least three heat exchange modules.
Preferably, the heat exchange modules are four, and a square fluid channel is formed between the heat exchange surfaces of the four heat exchange modules.
Preferably, the connection part includes a first part and a second part respectively provided on first surfaces of the first and second headers, and the rotary member is provided between the first and second parts.
Preferably, the upper surface and the lower surface are square.
Preferably, the heat exchange modules are stacked in multiple layers in height to form a large surface-contact heat exchange area.
Preferably, the first channel box and the second channel box of the heat exchange module are cuboids, the first side surface and the second side surface are surfaces formed by length and height, an included angle formed between the first side surfaces between adjacent heat exchange boxes of different heat exchange modules is a, wherein H is a fluid convection heat exchange coefficient, λ is a heat conduction coefficient of a fluid, L is the length of a heat transfer surface, and H is the height of a heat exchanger formed by the heat exchange modules,
the convection heat exchange between the outer side of the heat exchange box and fluid is carried out, and the Knudsen number is calculated as follows:
when the alpha is less than 90 degrees,
Nu＝m*(Ra*cos(a))n；
when alpha is more than or equal to 90 DEG
Nu＝m*(Ra*cos(180°-a))n；
Ra＝Pr·Gr
Nu＝(h*H)/λ
Wherein m and n are correction parameters, and the specific values are as follows:
when H/L <4, 0.166< m <0.167, 0.280< n < 0.290; preferably, m is 0.1665, n is 0.285;
when 8H/L > is 4, 0.167< ═ m <0.168, 0.290< ═ n < 0.300; preferably, m is 0.1675, n is 0.295;
when 12> H/L > -8, 0.1678< m <0.1687, 0.298< n < 0.309; preferably, m is 0.1683 and n is 0.305. Compared with the prior art, the invention has the beneficial effects that:
1) the invention provides a heat exchanger, which can realize the heat exchange of one or more fluids to the outside, for example, the heat exchange is carried out by flowing the fluid through a fluid channel. The heat exchange structure can realize the outward common heat exchange of more than 6 fluids, and has wide application range.
2) The invention provides a novel heat exchange module which is provided with two working positions, and the heat exchange between two different fluids of the same module and the external common heat exchange of one or two fluids can be realized through the two working positions.
3) The heat exchange module can be freely combined to form heat exchangers with different lengths and different heat exchange requirements, and is wide in application range.
4) The heat exchange module is convenient to replace and disassemble, the service life of the heat exchanger is guaranteed, the replacement of all the heat exchangers is avoided, and the cost is saved.
5) The heat exchange modules can be combined into polygonal shapes such as square pentagon and the like, and can realize comprehensive heat exchange in different positions, different shapes and different spaces.
6) According to the invention, the heat exchange module structure is simulated through a large amount of researches, the formulas such as the Knoop number and the like of the structure are determined for the first time, and the heat exchange performance and the pump work consumption can be estimated through the formulas.
7) The invention provides a nussel number calculation model, and determines the value range of the parameters m and n through a large number of simulations and experiments, particularly the value range which changes along with the continuous change of H/L.
Description of the drawings:
FIG. 1 is a schematic view of a heat exchange module in a first position;
FIG. 2 is a schematic diagram of the heat exchange module in a second position;
FIG. 3 is a front view of the heat exchange module extending in the length and height directions;
FIG. 4 is a perspective view of FIG. 3;
FIG. 5 is a front view of a heat exchanger formed as a rectangular parallelepiped;
FIG. 6 is a perspective view of FIG. 5;
FIG. 7 is a schematic structural diagram of a combination of four heat exchange modules;
FIG. 8 is a perspective view of FIG. 7;
FIG. 9 is a schematic structural view of a folding heat exchange module;
FIG. 10 is a perspective view of FIG. 9;
FIG. 11 is a schematic diagram of a third position of the heat exchange module;
FIG. 12 is a top view of FIG. 11;
FIG. 13 is a schematic diagram of a heat exchanger with two third-position displacer thermic module combinations;
FIG. 14 is a top view of FIG. 13;
fig. 15 and 16 are schematic size diagrams of the heat exchange module.
The reference numbers are as follows:
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Fig. 1 discloses a heat exchange module. As shown in the figure, the heat exchange module 1 comprises two cube-shaped tube boxes 11 arranged in parallel, namely a first tube box and a second tube box, wherein each tube box comprises an upper surface 12, a lower surface 13 and four side surfaces, each of the four side surfaces comprises a first side surface 14 and a second side surface 15, the first side surface 14 and the second side surface 15 form a first edge 16, the first side surface 14 is not provided with a heat insulation layer, and the second side surface is provided with a heat insulation layer; the heat exchange module further comprises a connecting member 17, wherein one part of the connecting member 17 is arranged at a first edge 16 of the first side surface 14 of the first tube box, the other part is arranged at a first edge of the first side surface of the second tube box, the edges of the first side surfaces of the first tube box and the second tube box are adjacent, so that the first and second headers can be rotated about the connecting part 17 to assume a first position and a second position, as shown in figure 2, in the first position, the first sides 14 of the two headers are attached together, thereby allowing the fluids in the first and second headers to exchange heat, as shown in figure 1, in the second position, the second sides 15 of the two headers are attached together, thereby providing thermal insulation between the first header and the second header, so that the first sides 14 of the first and second headers form a continuous heat exchange surface for heat exchange to the outside.
Preferably, the first side 14 is not provided with insulation, and the remaining three sides are provided with insulation. Through such arrangement, the first channel and the second channel at the first position can be insulated outwards when fluid exchanges heat.
Preferably, in the first position, the fluids in the first and second headers are different so that heat is transferred between them.
Preferably, in the second position, the fluids in the first and second headers may be the same, so that one fluid exchanges heat to the outside.
Preferably, in the second position, the fluids in the first and second headers may be different such that the two fluids exchange heat with the third fluid simultaneously, thereby allowing heat exchange between the fluids.
The device is suitable for the situation that the two fluids need to be utilized simultaneously but cannot be mixed under the condition that the fluids at the second position are different.
The invention provides a novel heat exchange module which is provided with two working positions, and the heat exchange between two different fluids of the same module and the external common heat exchange of one or two fluids can be realized through the two working positions. Therefore, one heat exchange module can realize different heat exchange modes.
Preferably, the connection part 17 includes a first part 171 and a second part 172 respectively disposed at first lateral sides of the first and second header tanks, and a rotation member 173 is disposed between the first and second parts 171 and 172.
Preferably, the upper and lower faces 12, 13 are provided with fluid inlets and fluid outlets. This allows for continuous fluid heat transfer.
Preferably, the upper surface 12 and the lower surface 13 are square.
Preferably, the first side 14 of the first channel is provided with a protrusion and the first side 14 of the second channel is provided with a recess, the protrusion and the recess cooperating with each other such that the first side is a tight fit in the first position. Through the mutual matching of the convex and the concave parts, the two pipe boxes are tightly attached together, so that the positions are relatively fixed, and the contact thermal resistance is reduced.
Preferably, the first side surface 14 of the first channel and the first side surface 14 of the second channel are fastened together by a fastener.
Preferably, the second side of the first manifold is provided with a projection and the second side of the second manifold is provided with a recess, the projection and the recess cooperating with each other such that the second side is a tight fit in the second position. The mutual matching of the convex and the concave parts ensures that the two pipe boxes are tightly attached together, thereby ensuring that the positions are relatively fixed.
Preferably, the second side surface of the first tube box and the second side surface of the second tube box are connected by a snap-fit manner.
The heat exchange modules can be combined to form various different heat exchange devices, and different requirements are met.
The heat exchange device shown in fig. 3 and 4 comprises a plurality of heat exchange modules stacked in the height direction and/or a plurality of heat exchange modules arranged in the length direction, so that the heat exchange modules form a cubic heat exchange device. In the height direction, the upper and lower faces of the heat exchange module are connected with the lower and upper faces of the adjacent heat exchange module, respectively, so that the fluid can flow between the plurality of heat exchange modules. In the length direction, the heat exchange modules are connected through the adjacent side faces, so that the same fluid or different fluids exchange heat outwards.
For example, when there are four different fluids to be exchanged for heat, at least two modules arranged in the second position are required to meet the requirements.
Preferably, when the four fluids need to exchange heat with each other, the two modules need to be arranged at the second position, and the heat exchange surfaces of the two modules are attached together, so that the four fluids exchange heat with each other.
Through the arrangement, the heat exchange device can realize multi-fluid heat exchange, is high in applicability and meets the requirement of omnibearing heat exchange.
In the heat exchange device of fig. 3 and 4, the heat exchange modules are located in the same position state, for example, belonging to the first position or the second position at the same time.
Preferably, the upper and lower faces are provided with projections and recesses respectively, so that the upper and lower faces can be fitted together for easy removal.
Preferably, the adjacent upper and lower faces may be joined together by means of a snap fit. Is convenient for installation and disassembly.
Fig. 5 and 6 show a heat exchange device consisting of four modules. As shown in fig. 5 and 6, the heat exchange device comprises four heat exchange modules 1.
Preferably, the four heat exchange modules are located at the second position, the first heat exchange module and the second heat exchange module are located at two sides, the heat exchange surfaces face to the outside, the third heat exchange module and the fourth heat exchange module are mutually abutted, the heat exchange surfaces face to the outside, and the third heat exchange module and the fourth heat exchange module are arranged between the first heat exchange module and the second heat exchange module, so that a cuboid heat exchange device is formed.
The heat exchange structure can realize the common external heat exchange of one or more fluids, for example, the heat exchange device is immersed in the fluid for heat exchange. The heat exchange structure can realize the outward common heat exchange of 8 fluids at most, and has wide application range.
Fig. 7 and 8 show a heat exchange device consisting of four modules. As shown in fig. 7 and 8, the heat exchange device comprises four heat exchange modules 1.
Preferably, the heat exchange modules are located at the second position, the heat exchange surfaces of the four heat exchange modules face inwards, the edges of the adjacent heat exchange modules are connected, and a square fluid channel is formed between the heat exchange surfaces of the four heat exchange modules. The heat exchange structure can realize the heat exchange of one or more fluids to the outside, for example, the fluids flow through the fluid channels for heat exchange. The heat exchange structure can realize the outward common heat exchange of 8 fluids at most, and has wide application range.
Preferably, the number is not limited to four, but may be limited to three or more, for example, a triangle or other polygonal structure may be formed. The heat exchange of more fluids can be realized, and the application range is wide.
Fig. 9 and 10 show a plurality of heat exchange modules, the heat exchange modules are located at the second position, the heat exchange surfaces of the heat exchange modules are inward, the edges of adjacent heat exchange modules are connected, and a multi-square fluid channel is formed between the heat exchange surfaces of the heat exchange modules. The heat exchange structure can realize the heat exchange of one or more fluids to the outside, for example, the fluids flow through the fluid channels for heat exchange. The heat exchange structure can realize the outward common heat exchange of various fluids at most, and has wide application range.
Preferably, the heat exchange modules of the heat exchange devices of fig. 5-10 may be stacked in multiple layers in height. Thereby forming a large-area heat exchange area.
Preferably, a rotating member is arranged between adjacent heat exchange boxes of different heat exchange modules. As shown in fig. 14.
Preferably, as shown in fig. 11, the heat exchange module 1 further has a third position, which is between the first position and the second position, and in the third position, an included angle a is formed between the first side surfaces of the first and second header, and 0< a <180 degrees (angle), preferably, 30-150 degrees. Through setting up the third position, can make the combination more convenient between the heat exchange module. For example, the edge parts among a plurality of heat exchange modules can be combined into a proper shape or even an irregular shape at will.
Preferably, as shown in fig. 12, there are two heat exchange modules, each in the third position, a being 90 degrees, the sides of both heat exchange modules forming a fluid channel on the inside, the first side facing the fluid channel. The heat exchange structure can realize the heat exchange of one or more fluids to the outside, for example, the fluids flow through the fluid channels for heat exchange. The heat exchange structure can realize the outward common heat exchange of 4 fluids at most, and has wide application range.
The heat exchange module is not limited to two pieces, and may be a plurality of pieces, thereby forming a polygonal shape, such as a hexagon or an octagon.
Preferably, the heat exchange module is of an upper and lower multi-layer structure, similar to the structure of fig. 3.
As an improvement, the heat exchange module structure is simulated through a large amount of research, the formulas such as the Knoop number and the like of the structure are determined for the first time, and the heat exchange performance and the pump work consumption can be estimated through the formulas.
Preferably, the first channel box and the second channel box of the heat exchange module are cuboids, the first side surface and the second side surface are surfaces formed by length and height, an included angle a is formed between the first side surfaces of the first channel box and the second channel box, or an included angle a is formed between the first side surfaces of adjacent heat exchange boxes of different heat exchange modules, wherein H is a fluid convection heat exchange coefficient, λ is a heat conduction coefficient of a fluid, L is the length of a heat transfer surface, and H is the height of a heat exchanger formed by the heat exchange modules,
the convection heat exchange between the outer side of the heat exchange box and fluid is carried out, and the Knudsen number is calculated as follows:
when the alpha is less than 90 degrees,
Nu＝m*(Ra*cos(a))n；
when alpha is more than or equal to 90 DEG
Nu＝m*(Ra*cos(180°-a))n；
Ra＝Pr·Gr
Nu＝(h*H)/λ
Wherein m and n are correction parameters, and the specific values are as follows:
when H/L <4, 0.166< m <0.167, 0.280< n < 0.290; preferably, m is 0.1665, n is 0.285;
when 8H/L > is 4, 0.167< ═ m <0.168, 0.290< ═ n < 0.300; preferably, m is 0.1675, n is 0.295;
when 12> H/L > -8, 0.1678< m <0.1687, 0.298< n < 0.309; preferably, m is 0.1683, n is 0.305;
preferably, when H/L <8, the values of m and n are increased as H/L is increased.
Nu is the Nussel number outside the heat exchange box;
ra is Rayleigh number;
pr is the Plantt number;
gr is Gr Grax Xiaofu number;
alpha is an included angle between the heat exchange boxes, and the unit is degree;
h is the heat convection coefficient between the outer side of the heat exchange box and the fluid and has the unit of W/(m)2·K)
Lambda is the thermal conductivity of the fluid outside the heat exchange box, and the unit is W/(m.K)
H is the geometrical characteristic length of the heat transfer surface in m, in this case the height of the heat exchange box, or the total height of the combined plurality of heat exchange boxes, e.g. the geometrical characteristic length of fig. 3, 4 is the sum of the heights of the two heat exchange boxes.
Preferably, when the angles are different, a weighted average of the angles is selected for calculation.
According to the invention, the heat exchange module structure is simulated through a large amount of researches, the formulas such as the Knoop number and the like of the structure are determined for the first time, the heat exchange performance and the pump power consumption can be estimated through the formulas, a good design basis is provided for further design, and the design accuracy is improved.
The invention provides a nussel number calculation model, and determines the value range of the parameters m and n through a large number of simulations and experiments, particularly the value range which changes along with the continuous change of H/L. This is also an inventive point of the present application.
Preferably, the fluid outside the heat exchange tank is preferably a gas.
Preferably, the heat exchange box is arranged in the height direction.
Although the present invention has been described with reference to the preferred embodiments, it is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (7)
1. The heat exchanger comprises a heat exchange module, wherein the heat exchange module comprises two cube-shaped pipe boxes which are arranged in parallel, namely a first pipe box and a second pipe box, each pipe box comprises an upper surface, a lower surface and four side surfaces, the four side surfaces comprise a first side surface and a second side surface, the first side surface and the second side surface form a first edge part, the first side surface is not provided with a heat insulation layer, and the second side surface is provided with a heat insulation layer; the heat exchange module further comprises a connecting component, one part of the connecting component is arranged at the first edge position of the first side surface of the first tube box, the other part of the connecting component is arranged at the first edge position of the first side surface of the second tube box, the edges of the first side surfaces of the first tube box and the second tube box are adjacent, so that the first tube box and the second tube box can rotate around the connecting component, the second side surfaces of the two tube boxes are attached together, so that heat is insulated between the inside of the first tube box and the inside of the second tube box, and the first side surface and the second side surface form a continuous heat exchange surface for heat exchange to the outside;
the heat exchanger comprises at least three heat exchange modules, the heat exchange surfaces of the heat exchange modules face inwards, the edges of adjacent heat exchange modules are connected, and a multi-deformation fluid channel is formed between the heat exchange surfaces of the at least three heat exchange modules.
2. The heat exchanger of claim 1, wherein the heat exchange modules are four, and a square fluid channel is formed between the heat exchange surfaces of the four heat exchange modules.
3. The heat exchanger as claimed in claim 1, wherein the connection member comprises first and second members respectively provided at first surfaces of the first and second header tanks, and the rotation member is provided between the first and second members.
4. The heat exchanger of claim 1, wherein the upper and lower faces are square.
5. The heat exchanger of claim 1, wherein the heat exchange modules are stacked in multiple levels to form a large area heat exchange area.
6. The heat exchanger of claim 1, wherein the first and second heat exchange module headers are rectangular solids, the first and second side surfaces are surfaces formed by a length and a height, and an included angle formed between the first side surfaces between adjacent heat exchange boxes of different heat exchange modules is a, wherein H is a convective heat transfer coefficient of a fluid, λ is a thermal conductivity coefficient of a fluid, L is a length of a heat transfer surface, and H is a height of the heat exchanger formed by the heat exchange modules,
the convection heat exchange between the outer side of the heat exchange box and fluid is carried out, and the Knudsen number is calculated as follows:
when the alpha is less than 90 degrees,
Nu＝m*(Ra*cos(a))n；
when alpha is more than or equal to 90 DEG
Nu＝m*(Ra*cos(180°-a))n；
Ra＝Pr·Gr
Nu＝(h*H)/λ
Wherein m and n are correction parameters, and the specific values are as follows:
when H/L <4, 0.166< m <0.167, 0.280< n < 0.290; preferably, m is 0.1665, n is 0.285;
when 8H/L > is 4, 0.167< ═ m <0.168, 0.290< ═ n < 0.300; preferably, m is 0.1675, n is 0.295;
when 12> H/L > -8, 0.1678< m <0.1687, 0.298< n < 0.309; preferably, m is 0.1683 and n is 0.305.
7. A multi-module heat exchanger includes a plurality of heat exchange modules.
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| EP2796195B1 (en) * | 2013-04-22 | 2019-03-27 | Fluitec Invest AG | Continuous tubular reactor |
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2020
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| CN103134367A (en) * | 2011-12-05 | 2013-06-05 | 溧阳市恒祥特钢机械制造有限公司 | Tube / cast iron plate combined type air pre-heater |
| JP2013231574A (en) * | 2012-02-02 | 2013-11-14 | Denso Corp | Heat exchanger |
| EP2796195B1 (en) * | 2013-04-22 | 2019-03-27 | Fluitec Invest AG | Continuous tubular reactor |
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