CN111322897B - Novel FLNG heat exchanger with Z-shaped channel - Google Patents
Novel FLNG heat exchanger with Z-shaped channel Download PDFInfo
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- CN111322897B CN111322897B CN202010053812.8A CN202010053812A CN111322897B CN 111322897 B CN111322897 B CN 111322897B CN 202010053812 A CN202010053812 A CN 202010053812A CN 111322897 B CN111322897 B CN 111322897B
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- 238000007599 discharging Methods 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 22
- 238000005192 partition Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 24
- 239000003345 natural gas Substances 0.000 abstract description 11
- 238000012546 transfer Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 2
- 239000003949 liquefied natural gas Substances 0.000 description 11
- 238000011161 development Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 101150096839 Fcmr gene Proteins 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
-
- 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
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
- F28D2021/007—Condensers
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a novel FLNG heat exchanger with Z-shaped channels, which comprises a heat exchange cylinder body, wherein a heat exchange cavity is arranged in the heat exchange cylinder body and is divided into a material feeding cavity, a replacement cavity and a material discharging cavity, and a heat exchange core body is arranged in the replacement cavity; the heat exchange core body comprises a heat exchange core box, two channel groups are arranged in the heat exchange core box, the two channel groups are liquid channel groups and gas channel groups, the liquid channel groups and the gas channel groups are distributed at intervals, each channel in the gas channel groups is a Z-shaped channel, and each channel in the liquid channel groups is a linear channel. The invention has the advantages that: through set up the circulation channel of Z channel, two kinds of different shapes of linear type channel in the heat exchange core, can effectively avoid the waste in core space to guarantee can closely arrange between the channel, improve heat transfer efficiency, thereby cool off the natural gas of gathering fast and be LNG, realize the quick transportation and the ration of natural gas.
Description
Technical Field
The invention relates to an FLNG heat exchanger, in particular to a novel FLNG heat exchanger with Z-shaped channels.
Background
Natural gas is a chemical raw material with primary energy and high value, and the main component of the natural gas is methane, and has the characteristics of high combustion heat value, less pollution and the like. In recent years, with the increasing awareness of environmental protection in various countries, the world energy structure is gradually changed, and natural gas is one of the most popular energy sources. However, the offshore natural gas field development is not only environment-friendly, complex in technology and huge in investment, but also long in exploration and development capacity construction period, high in investment income and high in risk. And the offshore marginal gas fields are large in number and considerable in reserves, and if the traditional development mode is not suitable for deep water and marginal gas fields, the investment return rate is low, and the method has insufficient attraction to investors. For the marginal gas fields, deep sea natural gas and associated gas resources, such as a construction mode of a traditional platform and an external transmission pipeline, many small gas fields cannot be put into exploitation due to cost limitation.
Floating Liquefied Natural Gas (FLNG) plants are favored as a new offshore gas field development technology for their relatively low investment, short capacity construction cycle, ease of migration, and flexibility in the market. If the FLNG technology is adopted, the FLNG device can be flexibly configured according to the production condition of the offshore natural gas field, the heat exchanger is utilized to liquefy the natural gas on the ship and then transport the liquefied natural gas to a destination, and the FLNG device has great significance in promoting the development of the sea area of China, particularly the deep sea gas field and the small-sized gas field and fully utilizing the oil and gas resources of China.
For example, in CN207963571U, an LNG heat exchanger is mentioned, which comprises a housing, a first collecting pipe, a second collecting pipe, a heat exchange branched pipe, a liquefied natural gas branched pipe, a first deflector and a second deflector, wherein two ends of the heat exchange branched pipe are respectively communicated with the first collecting pipe and the second collecting pipe, a liquefied natural gas inlet is arranged at the right end of the upper side of the housing, a liquefied natural gas outlet is arranged at the right end of the lower side of the housing, the liquefied natural gas inlet is communicated with the upper end of the second collecting pipe, and inner fins are uniformly distributed on the inner wall of the heat exchange branched pipe which is communicated with the lower end of the second collecting pipe. The heat exchanger is characterized in that fins are arranged on the inner wall of the heat exchange branch pipe, so that the contact area is increased, the first guide plate and the second guide plate are arranged in the heat exchange branch pipe, the flowing-through sequence after the refrigerant enters is a first liquefied natural gas flow, a second liquefied natural gas flow and a third liquefied natural gas flow, and the heat exchange efficiency is improved.
The heat exchanger has only one heat exchange container, the heat exchange fins have larger spacing, the heat exchange area is smaller, and the heat exchange efficiency is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing a novel FLNG heat exchanger with Z-shaped channels, which has high heat exchange efficiency.
In order to solve the technical problems, the technical scheme of the invention is as follows: the novel FLNG heat exchanger with the Z-shaped channels has the innovation points that: the heat exchange device comprises a heat exchange cylinder body, wherein when the heat exchange cylinder body is horizontally placed, the long axis direction of the heat exchange cylinder body is defined as a first direction, and the direction vertical to the first direction is defined as a second direction;
the heat exchange cylinder is internally provided with a heat exchange cavity, the heat exchange cylinder is internally provided with a pair of partition boards for dividing the heat exchange cavity into a material feeding cavity, a replacement cavity and a material discharging cavity which are horizontally and parallelly distributed, two sides of the heat exchange cylinder in the horizontal direction are also connected with a feeding pipeline and a discharging pipeline which are respectively communicated with the material feeding cavity and the material discharging cavity, two sides of the heat exchange cylinder in the vertical direction are also respectively connected with a heat exchange medium feeding pipe and a heat exchange medium discharging pipe which are respectively communicated with the replacement cavity, a heat exchange core is arranged in the replacement cavity, the cavity positioned at the upper part of the heat exchange core is the heat exchange medium feeding cavity, and the cavity positioned at the lower part of the heat exchange core is the heat exchange medium discharging cavity;
the heat exchange core comprises a heat exchange core box, two channel groups are arranged in the heat exchange core box, one channel group is a liquid channel group communicated with a material feeding cavity and a material discharging cavity, the other channel group is a gas channel group communicated with a heat exchange medium feeding cavity and a heat exchange medium discharging cavity, through holes communicated with the two channel groups are also formed in the heat exchange core box, through holes communicated with one channel group are formed in a partition plate, the liquid channel group and the gas channel group are provided with an array, and the liquid channel group and the gas channel group are distributed at intervals;
in the two channel groups, each channel of the gas channel is a Z-shaped channel, so that the channel group is a Z-shaped channel group, each channel in the liquid channel group is a linear channel, and thus the channel group is a linear channel group;
defining the length of the heat exchange core body as L, the width as B, the height as H, the diameter of a circle where the sections of the two channels are positioned as R, and the horizontal spacing between adjacent Z-shaped channels distributed along the second direction as B z The wave crest and the wave trough of the Z-shaped channel change along the horizontal direction vertical to the first direction, and the vertical distance along the horizontal direction vertical to the first direction is h z In the Z-shaped channel, the curve function of the Z-shaped channel is f (x) = -b z x/0.5T+b z Wherein T=L/nb z ,n＝1,2,3...；L％nb z = 0, z-slot number of tracks m z ＝([λH/h z ]+1)·([λB/b z ]+1) in the formula []Represents rounding, and lambda represents that the effective coefficient is between 0.8 and 0.9; the number of the linear grooves is m l ＝(λnb z +1)·([λH/h z ]+1)；
According to the functional expression, the space utilization rate expression of the heat exchange core body is as follows
Further, the liquid channel groups are provided with a plurality of groups and are distributed in parallel along the horizontal direction perpendicular to the first direction, each group of liquid channel groups consists of a plurality of liquid pipelines which are distributed in parallel along the second direction, and the liquid pipelines extend along the first direction;
the gas channel groups are provided with a plurality of groups and are distributed in parallel along the horizontal direction perpendicular to the first direction, each group of gas channels consists of a plurality of gas channels distributed in parallel along the second direction, and the gas channels extend along the second direction.
Further, the outer surfaces of the Z-shaped channel and the linear channel are respectively provided with a plurality of hemispherical grooves which are distributed in parallel along the extending direction of the Z-shaped channel or the linear channel.
Furthermore, the heat exchange cores are sequentially attached and distributed in the replacement cavity from top to bottom.
Further, the heat exchange barrels are in a pair, are distributed in parallel along the horizontal direction perpendicular to the first direction, and the feeding pipelines of the two heat exchange barrels are connected into a feeding main pipe, and the heat exchange medium feeding pipes are connected into a heat exchange medium feeding main pipe.
The invention has the advantages that: according to the heat exchanger, the Z-shaped channels and the straight-line channels are arranged in the heat exchange core body, so that waste of core body space can be effectively avoided, the channels can be tightly arranged, the heat transfer efficiency is improved, collected natural gas is rapidly cooled into LNG, and rapid transportation and distribution of the natural gas are realized.
Through the design to the shape, the quantity of Z-shaped channel and the quantity of linear type channel to obtain the space utilization of heat exchange core, based on the space utilization of heat exchange core is higher, then the principle that heat transfer area is bigger, thereby effectively design and arrange Z-shaped channel and linear type channel, make the working fluid evenly distributed in whole heat exchanger, the heat transfer is even.
The hemispherical grooves formed in the Z-shaped grooves and the linear grooves can effectively reduce the Reynolds number, improve the Knoop number, effectively increase the heat exchange area and improve the heat exchange efficiency between fluids.
For a plurality of heat exchange cores, the purpose of increasing the heat exchange area is achieved; and two heat exchange cylinders are arranged to improve the heat exchange efficiency.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of a novel FLNG heat exchanger with Z-shaped channels of the present invention.
Fig. 2 is an elevation view of the novel FLNG heat exchanger with Z-shaped channels of the present invention.
Fig. 3 is a side view of the novel FLNG heat exchanger with Z-shaped channels of the present invention.
FIG. 4 is a schematic view of a heat exchange core according to the present invention.
Fig. 5 is an enlarged view of an inner portion of the heat exchange core according to the present invention.
Fig. 6 is a schematic perspective view of a Z-shaped channel according to the present invention.
Fig. 7 is a schematic perspective view of a linear channel in the present invention.
Detailed Description
The following examples will provide those skilled in the art with a more complete understanding of the present invention and are not intended to limit the invention to the embodiments described.
The novel FLNG heat exchanger with the Z-shaped channels as shown in the figures 1-7 comprises a heat exchange cylinder body, wherein when the heat exchange cylinder body is horizontally placed, the long axis direction of the heat exchange cylinder body is defined as a first direction A1, and the direction vertical to the first direction is defined as a second direction A2.
The heat exchange cylinder has one, distributes along the horizontal direction that is perpendicular with first direction, is heat exchange cylinder 1:
the heat exchange tube 1 is internally provided with a heat exchange cavity, the heat exchange tube 1 is internally provided with a pair of material feeding cavities 7a, a replacement cavity and a partition plate 6a and 6b of the material discharging cavities 7b which are horizontally distributed in parallel, the material feeding cavities 7a and 7b are all hemispherical, two sides of the heat exchange tube 1 in the horizontal direction are also connected with a feeding pipeline 2 and a discharging pipeline 3 which are respectively communicated with the material feeding cavities 7a and 7b, two sides of the heat exchange tube 1 in the vertical direction are also respectively connected with a heat exchange medium feeding pipe 4 and a heat exchange medium discharging pipe 5 which are respectively communicated with the replacement cavity, the heat exchange cores are arranged in the replacement cavity, the two heat exchange cores are sequentially laminated and distributed in the replacement cavity from top to bottom, the heat exchange cores 9a and 9b are sequentially arranged in the replacement cavity, and the heat exchange cores 9a and 9b are fixed through the partition plate 6a and 6b, so that the cavity space is effectively utilized, the cavity space is formed by the heat exchange medium feeding cavity 8a, the cavity is the heat exchange medium feeding cavity 8a is arranged at the upper part of the heat exchange core 9a, the heat exchange core is the cavity 8b is in the shape of the heat exchange medium feeding cavity 8b, the heat exchange core is in the shape of the cavity is the cavity 8b, and the heat exchange core is in the shape of the heat exchange medium is the cavity 8b is in the cavity with the heat exchange medium discharging cavity, and the heat exchange core is in the cavity is in the shape of the cavity is in the cavity and the cavity is in the cavity with the cavity.
According to the example of the invention, the heat exchange core body and the heat exchange cylinder body are arranged in a sealing way, and the sealing reliability can be ensured through the cavity configuration and the partition plate.
According to the example of the invention, the diameter of the heat exchange medium feeding pipeline 4 arranged along the second direction A2 is larger, so that gas can flow into the cavity faster and lower, the heat exchange medium feeding cavity 8a is filled, the diameter of the heat exchange medium discharging pipe 5 is smaller, the outflow rate is slower after the gas is changed into liquid through heat transfer and filled into the heat exchange medium discharging cavity 8b, the residence time of the gas in the heat exchange core channel can be improved, and the heat exchange efficiency is improved.
According to the example of the invention, the diameter of the feeding pipeline 5 arranged along the first direction A1 is consistent with the sizes of the discharging pipeline 2 and the discharging pipeline 3, so that the liquid can flow in and out smoothly in the heat exchange cavity, and the stability of heat transfer is ensured.
As can be seen from the schematic diagrams shown in fig. 4 and 5, the heat exchange core comprises a heat exchange core box 12, two channel groups are installed in the heat exchange core box 12, one channel group is a horizontal channel group 11 communicated with a material feeding cavity and a material discharging cavity, the other channel group is a vertical channel group 10 communicated with a heat exchange medium feeding cavity and a heat exchange medium discharging cavity, through holes communicated with the two channel groups are further formed in the heat exchange core box 12, through holes communicated with one channel group are formed in a partition plate, the horizontal channel group 11 and the vertical channel group 10 are provided with an array, and the horizontal channel group 11 and the vertical channel group 10 are distributed at intervals.
In both channel sets, each channel in one channel set is a linear channel 13 as shown in fig. 6, such that the channel set is a linear channel set 11, and each channel in the other channel set is a Z-channel 10 as shown in fig. 7, such that the channel set is a Z-channel set 15.
The linear channel groups 11 have a plurality of groups and are distributed in parallel along a horizontal direction perpendicular to the first direction, each group of linear channel groups 11 is composed of a plurality of linear channels 13 distributed in parallel along the second direction, and the linear channels 13 extend along the first direction A1.
The Z-shaped channel groups 10 have a plurality of groups, are distributed in parallel along a horizontal direction perpendicular to the first direction A1, each group of Z-shaped channel groups 10 is composed of a plurality of Z-shaped channels 15 distributed in parallel along the second direction A2, and the Z-shaped channels 15 extend along the second direction A2.
The Z-shaped channel groups 10 and the linear channel groups 11 are arranged at equal intervals, so that the uniformity of arrangement of the Z-shaped channel groups 10 along the first direction A1 and the uniformity of the linear channel groups 11 along the second direction A2 are ensured, the uniformity of distribution between the Z-shaped channel groups 10 and the linear channel groups 11 is also ensured, the inner space of the heat exchange core is effectively utilized, the heat exchange area is increased, and the uniformity of heat transfer is ensured.
A plurality of hemispherical grooves 20 are arranged on the outer surfaces of the Z-shaped channel 15 and the linear channel 13 and are distributed in parallel along the extending direction of the Z-shaped channel 15 or the linear channel 13.
The section of the Z-shaped channel 15 is semicircular, is a gas flow channel, the Z-shaped channel 15 has longer path, and when gas passes through the Z-shaped channel 15, the gas passes through the hemispherical groove 14, thereby reducing the Reynolds number, not only improving the heat exchange area, but also improving the heat exchange efficiency,
the cross section of the straight-line channel 13 is in a semicircular shape and is a liquid circulation channel, the number of the straight-line channels 13 is large, the path is short, the condensation temperature of liquid can be effectively kept when the liquid passes through the straight-line channels 13, and the liquid passes through the hemispherical grooves 14, so that the Reynolds number is reduced, and the heat exchange efficiency is improved.
Different curve functions can influence the inner wall area of the Z-shaped channels on one hand and the arrangement condition between the Z-shaped channels and the linear channels on the other hand, thereby influencing the space utilization rate of the core body, defining the length L, the width B and the height H of the heat exchange core body, defining the diameter R of a circle where the sections of the two channels are positioned, and defining the horizontal spacing B between the adjacent Z-shaped channels 15 distributed along the direction perpendicular to the second direction A2 Z The peaks and valleys of the Z-shaped grooves 15 vary in a horizontal direction perpendicular to the first direction A1, and a vertical pitch in the horizontal direction perpendicular to the first direction A1 is h Z The arrangement of the linear channels 13 depends on the arrangement of the Z-shaped channels 15.
In designing the Z-shaped channel 15:
the Z-shaped periodic function expression is f (x) =kx+c, x e (0,0.5T), f (x+0.5t) = -f (x). h is a z Satisfy the relation h z Not less than CR, in this embodiment h z =cr, thereby ensuring that the arrangement of the linear channels 13 is unaffected.
When the heat exchanger works, the heat exchanger is made toSo as to meet the strength requirement of the wall of the heat exchange core body groove, in the embodiment
The design is aimed at improving the space utilization rate of the heat exchange core body, and meanwhile, the arrangement form between the Z-shaped channels and the linear channels needs to be considered, so that the curve function of the Z-shaped channels 15 is f (x) = -b z x/0.5T+b z Wherein T=L/nb z ,n＝1,2,3...；L％nb z At this time, the number m of Z-shaped channels 15 can be obtained according to the parameters of the heat exchange core z ＝([λH/h z ]+1)·([λB/b z ]+1) in the formula []Represents a rounding off, and λ represents a significant coefficient generally between 0.8 and 0.9.
According to the characteristics of the Z-shaped channels 15 and the arrangement condition of the linear channels 13, the number of the linear channels 13 can be obtainedm l ＝(λnb z +1)·([λH/h z ]+1)。
According to the function expression, the space utilization rate expression of the heat exchange core body is calculated as
The higher the space utilization rate of the heat exchange core body is, the larger the heat exchange area is, so that the Z-shaped channels 15 and the linear channels 13 are effectively designed and arranged, and the working fluid is uniformly distributed in the whole heat exchanger, and the heat exchange is uniform. In addition, hemispherical grooves 14 are arranged on the Z-shaped grooves 15 and the linear grooves 13, the groove diameter r=0.1R, and the reynolds number of the hemispherical groove holes can be effectively reduced, so that the heat exchange area is large and the heat exchange efficiency is high.
During operation, liquid flows in from the feeding pipeline 2, enters from the material feeding cavity 7a, fills the hemispherical cavity, enters the heat exchange core 9a and the heat exchange core 9b through the Z-shaped channel 15 on the heat exchange core for heat transfer under the pressure effect, then flows into the material discharging cavity 7b and flows out through the discharging pipeline 3.
The gas flows in from the heat exchange medium feeding pipeline 4, enters from the heat exchange medium feeding cavity 8a, fills the ellipsoidal cavity, enters the heat exchange core 9a and the heat exchange core 9b through the linear channels 13 on the heat exchange core for heat transfer due to the pressure effect, then flows into the heat exchange medium discharging cavity 9b and flows out through the heat exchange medium discharging pipe 5.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. Novel FLNG heat exchanger with Z-shaped channel, its characterized in that: the heat exchange device comprises a heat exchange cylinder body, wherein when the heat exchange cylinder body is horizontally placed, the long axis direction of the heat exchange cylinder body is defined as a first direction, and the direction vertical to the first direction is defined as a second direction;
the heat exchange cylinder is internally provided with a heat exchange cavity, the heat exchange cylinder is internally provided with a pair of partition boards for dividing the heat exchange cavity into a material feeding cavity, a replacement cavity and a material discharging cavity which are horizontally and parallelly distributed, two sides of the heat exchange cylinder in the horizontal direction are also connected with a feeding pipeline and a discharging pipeline which are respectively communicated with the material feeding cavity and the material discharging cavity, two sides of the heat exchange cylinder in the vertical direction are also respectively connected with a heat exchange medium feeding pipe and a heat exchange medium discharging pipe which are respectively communicated with the replacement cavity, a heat exchange core is arranged in the replacement cavity, the cavity positioned at the upper part of the heat exchange core is the heat exchange medium feeding cavity, and the cavity positioned at the lower part of the heat exchange core is the heat exchange medium discharging cavity;
the heat exchange core comprises a heat exchange core box, two channel groups are arranged in the heat exchange core box, one channel group is a liquid channel group communicated with a material feeding cavity and a material discharging cavity, the other channel group is a gas channel group communicated with a heat exchange medium feeding cavity and a heat exchange medium discharging cavity, through holes communicated with the two channel groups are also formed in the heat exchange core box, through holes communicated with one channel group are formed in a partition plate, the liquid channel group and the gas channel group are provided with an array, and the liquid channel group and the gas channel group are distributed at intervals;
the heat exchange cores are sequentially attached and distributed in the replacement cavity from top to bottom;
in the two channel groups, each channel of the gas channel is a Z-shaped channel, so that the channel group is a Z-shaped channel group, each channel in the liquid channel group is a linear channel, and thus the channel group is a linear channel group;
the liquid channel groups are provided with a plurality of groups and are distributed in parallel along the horizontal direction perpendicular to the first direction, each group of liquid channel groups consists of a plurality of liquid pipelines which are distributed in parallel along the second direction, and the liquid pipelines extend along the first direction;
the gas channels are arranged in parallel along a horizontal direction perpendicular to the first direction, each group of gas channels consists of a plurality of gas channels which are arranged in parallel along the second direction, and the gas channels extend along the second direction;
defining the length of the heat exchange core body as L, the width as B, the height as H, the diameter of a circle where the sections of the two channels are positioned as R, and the horizontal spacing between adjacent Z-shaped channels distributed along the second direction as B z The wave crest and the wave trough of the Z-shaped channel change along the horizontal direction vertical to the first direction, and the vertical distance along the horizontal direction vertical to the first direction is h z In the Z-shaped channel, the curve function of the Z-shaped channel is f (x) = -b z x/0.5T+b z Wherein T=L/nb z ,n＝1,2,3...；L％nb z = 0, z-slot number of tracks m z ＝([λH/h z ]+1)·([λB/b z ]+1) in the formula []Represents rounding, and lambda represents that the effective coefficient is between 0.8 and 0.9; the number of the linear grooves is m l ＝(λnb z +1)·([λH/h z ]+1)；
According to the functional expression, the space utilization rate expression of the heat exchange core body is as follows
2. The novel FLNG heat exchanger with Z-shaped channels of claim 1, wherein: the outer surfaces of the Z-shaped channel and the linear channel are respectively provided with a plurality of hemispherical grooves which are distributed in parallel along the extending direction of the Z-shaped channel or the linear channel.
3. The novel FLNG heat exchanger with Z-shaped channels of claim 1, wherein: the heat exchange barrels are in parallel distribution along the horizontal direction perpendicular to the first direction, the feeding pipelines of the two heat exchange barrels are connected into a feeding main pipe, and the heat exchange medium feeding pipes are connected into a heat exchange medium feeding main pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019108116367 | 2019-08-30 | ||
| CN201910811636.7A CN110440625A (en) | 2019-08-30 | 2019-08-30 | A kind of novel FLNG heat exchanger with Z-shaped conduit |
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| CN111322897A CN111322897A (en) | 2020-06-23 |
| CN111322897B true CN111322897B (en) | 2024-04-16 |
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| CN202010053812.8A Active CN111322897B (en) | 2019-08-30 | 2020-01-17 | Novel FLNG heat exchanger with Z-shaped channel |
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Also Published As
| Publication number | Publication date |
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| CN110440625A (en) | 2019-11-12 |
| CN111322897A (en) | 2020-06-23 |
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