CN111442680A - Novel F L NG heat exchanger with S-shaped and Z-shaped composite channels - Google Patents
Novel F L NG heat exchanger with S-shaped and Z-shaped composite channels Download PDFInfo
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- 239000002131 composite material Substances 0.000 title claims abstract description 15
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- 239000007788 liquid Substances 0.000 claims description 9
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- 230000008859 change Effects 0.000 claims description 5
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 36
- 239000007789 gas Substances 0.000 description 23
- 239000003345 natural gas Substances 0.000 description 17
- 238000012546 transfer Methods 0.000 description 16
- 239000003949 liquefied natural gas Substances 0.000 description 6
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- 239000012530 fluid Substances 0.000 description 3
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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
- 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
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Abstract
The invention relates to a novel F L NG heat exchanger with S-shaped and Z-shaped composite 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, 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 and are respectively a horizontal channel group and a vertical channel group, the horizontal channel group and the vertical channel group are distributed at intervals, and in the two channel groups, each channel in one channel group is an S-shaped channel, and each channel in the other channel group is a Z-shaped channel.
Description
Technical Field
The invention relates to an F L NG heat exchanger, in particular to a novel F L NG heat exchanger with S-shaped and Z-shaped composite channels.
Background
Natural gas is a disposable energy and high-value chemical raw material, the main component of the natural gas is methane, and the natural gas has the characteristics of high combustion heat value, less pollution and the like. In recent years, with the enhancement of environmental protection awareness of various countries, the world energy structure is gradually changing, and natural gas is becoming one of the most popular energy sources. However, the development of the offshore natural gas field not only has severe environment, complex technology and huge investment, but also has long construction period of exploration and development capacity, high investment income and large risk. And the quantity of offshore marginal gas fields is large, the reserves are considerable, and the deep water and marginal gas fields are not suitable if the traditional development mode is adoptedThe method has low return on investment and has no enough attraction to investors, and offshore natural gas resources in China are rich, and the total geological resource amount is about 5.9 × 1012m3But the resources are dispersed and widely distributed in the Zhujiang mouth basin, the Yingge sea basin, the Qiongnan basin, the east sea shelf basin and the Bohai Bay basin, and a considerable part of the deep sea gas field, the marginal gas field and the low-grade natural gas resources are the deep sea gas field, the marginal gas field and the low-grade natural gas resources, for example, the area of the south sea area of China is about 350 × 104km2The sea area with the water depth of more than 300m accounts for 75 percent, rich oil and gas resources are stored, mainly gas, and the amount of natural gas geological resources in the deep water area of the northern continental shelf is about 1.6 × 1012m3The natural gas resource accounts for 83% of the oil and gas resource in the sea area of the south China sea. Wherein 70% of natural gas resources are stored in deepwater areas, and a considerable part of the natural gas resources are associated gas resources of offshore oil fields. For these marginal gas fields, deep sea natural gas and associated gas resources, if the traditional construction mode of platform and external pipeline is adopted, many small gas fields cannot be put into exploitation due to cost limitation.
If the F L NG technology is adopted, the F L NG device can be flexibly configured according to the production conditions of the offshore natural gas field, the heat exchanger is used for liquefying the natural gas on a ship and then transporting the liquefied natural gas to a destination, and the floating type liquefied natural gas (F L NG) device has important significance for promoting the development of sea areas, particularly deep sea gas fields and small gas fields, in China and fully utilizing oil and gas resources in China.
For example, in patent CN207963571U, a L NG heat exchanger is mentioned, which includes a housing, a first collecting pipe, a second collecting pipe, a heat exchange branch pipe, a liquefied natural gas branch pipe, a first flow guide plate and a second flow guide plate, wherein two ends of the heat exchange branch pipe are respectively communicated with the first collecting pipe and the second collecting pipe, an 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 branch pipe communicated with the lower end of the second collecting pipe.
The heat exchanger is only provided with one heat exchange container, the space between the heat exchange fins is larger, the heat exchange area is smaller, and the heat exchange efficiency is not high.
Disclosure of Invention
The invention aims to provide a novel F L NG heat exchanger with S-shaped and Z-shaped composite channels, which has high heat exchange efficiency.
In order to solve the technical problem, the technical scheme of the invention is that the novel F L NG heat exchanger with the S-shaped and Z-shaped composite channels is characterized by comprising a heat exchange cylinder body, wherein when the heat exchange cylinder body is horizontally arranged, the long axis direction of the heat exchange cylinder body is limited to be a first direction, and the direction vertical to the first direction is a second direction;
the heat exchange device comprises a heat exchange cylinder, a heat exchange cavity, a pair of material feeding cavity, a displacement cavity and a material discharging cavity, wherein the heat exchange cavity is arranged in the heat exchange cylinder, the heat exchange cylinder is internally provided with a partition plate which divides the heat exchange cavity into the material feeding cavity, the displacement cavity and the material discharging cavity which are horizontally distributed in parallel, 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 communicated with the displacement cavity, a heat exchange core body is arranged in the displacement cavity, the cavity positioned at the upper;
the heat exchange core body comprises a heat exchange core box, two channel groups are arranged in the heat exchange core box, one channel group is a horizontal channel group communicated with a material feeding cavity and a material discharging cavity, the other channel group is a vertical 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 further formed in the heat exchange core box, through holes communicated with one channel group are formed in a partition plate, the horizontal channel group and the vertical channel group are provided with a plurality of groups, and the horizontal channel group and the vertical channel group are distributed at intervals;
in both sets, each channel in one set is an S-shaped channel, making that set an S-shaped set, and each channel in the other set is a Z-shaped channel, making that set a Z-shaped set.
Furthermore, the horizontal channel groups are distributed in parallel along a horizontal direction perpendicular to the first direction, each horizontal channel group consists of a plurality of horizontal channels distributed in parallel along the second direction, and the horizontal channels extend along the first direction;
the vertical channel groups are arranged in groups and distributed in parallel along the horizontal direction perpendicular to the first direction, each group of vertical channels consists of a plurality of vertical channels distributed in parallel along the second direction, and the vertical channels extend along the second direction.
Furthermore, the S-shaped channel is a gas flowing channel, namely a vertical channel, and the section of the Z-shaped channel is in a semicircular shape, and is a liquid flowing channel, namely a horizontal channel;
defining the length of the heat exchange core as L, the width as B, the height as H, the diameter of the circle of the cross section of the two channels as R, and the horizontal distance between the adjacent S-shaped channels distributed along the direction vertical to the second direction as BsThe wave crest and the wave trough of the S-shaped channel change along the direction vertical to the first direction and the second direction, and the vertical distance along the first direction is hsThe Z-shaped groove channel arrangement form is similar to the S-shaped groove channel arrangement form, the wave crests and the wave troughs of the Z-shaped groove channels change along the direction vertical to the first direction, and the horizontal distance between the adjacent Z-shaped groove channels distributed along the direction vertical to the first direction is bzA vertical spacing h along the first directionz(ii) a The vertical interval between the S-shaped channel and the Z-shaped channel is
In the S-shaped channel, the wave shape of the S-shaped channel is not influenced by the Z-shaped channel and is only cut by the S-shaped channelThe influence of the surface circle diameter R affects the number of rows if the amplitude is too large, affects the heat exchange area if the circumference is too large, and affects the processing if the amplitude is too small, and therefore, the curve function of the S-shaped channels is y 2Rcos (pi x/L/nR), where n is 1,2,3., (L% nR is 0; 1. ltoreq. r.ltoreq.3 mm, and the number m of S-shaped channels is 1. ltoreq. r.ltoreq.3 mms＝([λH/hs]+1)·([λB/bs]+1) of the formula (I)]Represents rounding, and lambda represents an effective coefficient between 0.8 and 0.9;
in the Z-shaped channel, the shape of the Z-shaped channel is not influenced by the S-shaped channel, is only related to the diameter R of the section circle of the Z-shaped channel, and influences the arrangement quantity if the amplitude is too large; if the perimeter is larger, the heat exchange area is influenced; if the amplitude is too small, the machining is affected. The curve function of the Z-shaped channel is therefore f (x) — Rx/0.5T +2R, where T ═ B/nR, n ═ 1,2, 3.; b% nR ═ 0; r is more than or equal to 1 and less than or equal to 3mm, and the number of Z-shaped channels is mz＝([λL/bz]+1)·([λH/hz]+1)；
According to the function expression, the space utilization expression of the heat exchange core body is
Furthermore, the outer surfaces of the S-shaped channel and the Z-shaped channel are respectively provided with a plurality of hemispherical grooves which are distributed in parallel along the extending direction of the S-shaped channel or the Z-shaped channel.
Furthermore, the heat exchange core bodies are provided with a plurality of heat exchange core bodies which are sequentially attached and distributed in the replacement cavity from top to bottom.
The heat exchanger has the advantages that the S-shaped channel and the Z-shaped channel are arranged in the heat exchange core body, so that waste of core body space can be effectively avoided, close arrangement of the channels can be ensured, heat transfer efficiency is improved, collected natural gas is rapidly cooled to L NG, and rapid transportation and distribution of the natural gas are realized.
Through the design to the shape and the quantity of S-shaped channel, Z-shaped channel to reach the space utilization of heat transfer core, the higher the space utilization based on the heat transfer core is, then the bigger principle of heat transfer area, thereby S-shaped channel and the straight line form channel of effective design and arrangement make working fluid distribute evenly in whole heat exchanger, the heat transfer is even.
The semi-spherical grooves arranged on the S-shaped channel and the Z-shaped channel can effectively reduce the Reynolds number, improve the Knoop number, effectively increase the heat exchange area and improve the heat exchange efficiency between fluids.
The purpose of increasing the heat exchange area is achieved by arranging a plurality of heat exchange core bodies; and two heat exchange barrels are arranged to improve the heat exchange efficiency.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of the novel F L NG heat exchanger of the present invention having S-shaped and Z-shaped composite channels.
Fig. 2 is a front view of the novel F L NG heat exchanger of the present invention having S-shaped and Z-shaped composite channels.
Fig. 3 is a side view of the novel F L NG heat exchanger of the present invention having S-shaped and Z-shaped composite channels.
Fig. 4 is a schematic view of a heat exchange core of the present invention.
Fig. 5 is an enlarged view of a part of the inside of the heat exchange core of the present invention.
Figure 6 is a perspective view of a Z-shaped channel of the present invention.
Fig. 7 is a perspective view of an S-shaped channel of the present invention.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
The novel F L NG heat exchanger with the S-shaped and Z-shaped composite 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 body is provided with one heat exchange cylinder body, distributed along the horizontal direction vertical to the first direction and used for the heat exchange cylinder body 1:
the heat exchange device is characterized in that a heat exchange cavity is arranged in a heat exchange barrel body 1, a pair of heat exchange cavities are arranged in the heat exchange barrel body 1 and are divided into a material feeding cavity 7a, a replacement cavity and a partition plate 6a and a partition plate 6b of a material discharging cavity 7b which are horizontally distributed in parallel, the material feeding cavity 7a and the material discharging cavity 7b are semi-spherical, two sides of the heat exchange barrel body 1 in the horizontal direction are connected with a feeding pipeline 2 and a discharging pipeline 3 which are respectively communicated with the material feeding cavity 7a and the material discharging cavity 7b, two sides of the heat exchange barrel body 1 in the vertical direction are 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, heat exchange cores are arranged in the replacement cavity, two heat exchange cores are sequentially attached and distributed in the replacement cavity from top to bottom and sequentially comprise a heat exchange core 9a and a heat exchange, Heat exchange core 9b makes up through the concatenation, then through baffle 6a, baffle 6b is fixed to effectively utilize the cavity space, the cavity that lies in heat exchange core 9a upper portion in the replacement chamber is heat transfer medium feed cavity 8a, the cavity that lies in heat exchange core 9b lower part is heat transfer medium ejection of compact chamber 8b, heat transfer medium feed cavity 7a all is the hemisphere shape with heat transfer medium ejection of compact chamber 7b, heat transfer medium feed cavity 8a all is the ellipsoid shape with heat transfer medium ejection of compact chamber 8 b.
According to the embodiment of the invention, the heat exchange core body and the heat exchange cylinder body are arranged in a sealing mode, and the sealing reliability can be ensured through the cavity configuration and the partition plates.
According to the present invention, the heat exchange medium inlet pipe 4 arranged along the second direction a2 has a larger diameter, which is advantageous in that the gas can flow into the cavity faster and slower, and fill the heat exchange medium inlet chamber 8a, and the heat exchange medium outlet pipe 5 has a smaller diameter, and the gas can flow out slower after changing into liquid through heat transfer and filling the liquid into the heat exchange medium outlet chamber 8b, so that the residence time of the gas in the heat exchange core channel can be increased, and the heat exchange efficiency can be improved.
According to the example of the invention, the diameter of the feeding pipe 5 arranged along the first direction a1 is consistent with the size of the discharging pipes 2 and 3, so that the liquid can be ensured to smoothly flow in and out 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 body includes a heat exchange core box 12, two channel sets are installed in the heat exchange core box 12, one of the channel sets is a horizontal channel set 11 communicated with the material feeding cavity and the material discharging cavity, the other channel set is a vertical channel set 10 communicated with the heat exchange medium feeding cavity and the heat exchange medium discharging cavity, through holes communicated with the two channel sets are further formed in the heat exchange core box 12, through holes communicated with one of the channel sets are formed in the partition plate, the horizontal channel set 11 and the vertical channel set 10 both have an array, and the horizontal channel set 11 and the vertical channel set 10 are distributed at intervals.
In both sets, each channel in one set is a Z-channel 13, as shown in fig. 6, so that the set is a Z-channel set 11, and each channel in the other set is an S-channel 10, as shown in fig. 7, so that the set is an S-channel set 15.
The Z-shaped groove sets 11 are arranged in parallel along a horizontal direction perpendicular to the first direction, each set of Z-shaped groove sets 11 is composed of a plurality of Z-shaped grooves 13 arranged in parallel along the second direction, and the Z-shaped grooves 13 extend along the first direction a 1.
The S-shaped groove sets 10 are arranged in parallel along a horizontal direction perpendicular to the first direction a1, each set of S-shaped groove sets 10 is formed by a plurality of S-shaped grooves 15 arranged in parallel along the second direction a2, and the S-shaped grooves 15 extend along the second direction a 2.
The S-shaped channel group 10 and the Z-shaped channel group 11 are arranged at equal intervals, the uniformity of arrangement of the S-shaped channel group 10 along the first direction A1 and the uniformity of arrangement of the Z-shaped channel group 11 along the second direction A2 are ensured, the uniformity of distribution between the S-shaped channel group 10 and the Z-shaped channel group 11 is also ensured, the internal space of the heat exchange core body is effectively utilized, the heat exchange area is increased, and the uniformity of heat transfer is ensured.
The outer surfaces of the S-shaped channel 15 and the Z-shaped channel 13 are respectively provided with a plurality of hemispherical grooves 20 which are distributed in parallel along the extending direction of the S-shaped channel 15 or the Z-shaped channel 13.
The section of the S-shaped channel 15 is in a semicircular shape and is a gas flow channel, the path of the S-shaped channel 15 is longer, when gas passes through the S-shaped channel 15, the Reynolds number is reduced under the action of the hemispherical groove 14, the heat exchange area is improved, the heat exchange efficiency is also improved,
the cross-section of Z-shaped channel 13 is the semicircle form, and for liquid circulation channel, Z-shaped channel 13 is more in quantity, and the route is shorter, and liquid can more effectually keep condensing temperature when passing through Z-shaped channel 13, through the effect of hemisphere recess 14, has reduced the reynolds number, improves heat exchange efficiency.
Different curve functions can influence the inner wall area of the S-shaped channel on one hand and influence the arrangement condition between the S-shaped channel and the Z-shaped channel on the other hand, thereby influencing the space utilization rate of the core body, defining the length of the heat exchange core body as L, the width as B, the height as H, the diameter of a circle with the cross sections of the two channels as R, and the horizontal distance between the adjacent S-shaped channels distributed along the direction vertical to the first direction A1 as BsThe wave crest and the wave trough of the S-shaped channel 15 change along the second direction, and the vertical distance along the first direction is hsThe Z-shaped grooves 13 are arranged in a similar manner to the S-shaped grooves 15, wherein the peaks and valleys of the Z-shaped grooves 13 vary in a direction perpendicular to the first direction A1, and the horizontal distance b between adjacent Z-shaped grooves 13 distributed in a direction perpendicular to the first direction A1zA vertical spacing h along the first direction A1z。
In designing the S-shaped channels 15:
hsthe relation h between the S-shaped curve function y and Acos (wx) needs to be satisfiedsNot less than AR, h in this examples＝2R2Thereby ensuring that the arrangement of the Z-shaped channel is not affected.
When the heat exchanger is in operation, let bs＝hsSo as to meet the strength requirement of the wall of the heat exchange core body.
When designing the S-shaped channels 15, the design is performed for the purpose of improving the space utilization rate of the heat exchange core body, and the arrangement form between the S-shaped channels 15 and the Z-shaped channels 13 needs to be considered, so that the curve function of the S-shaped channels 15 is y-2 Rcos (pi x/L/nR), where n-1, 2,3.., L% nR-0, 1 ≦ R ≦ 3mm, and the S-shaped channels 15 have n-1, 2,3., (pi x/L/nR) andnumber, ms＝([λH/hs]+1)·([λB/bs]+1) of the formula (I)]Represents rounding, and lambda represents an effective coefficient between 0.8 and 0.9;
in designing the Z-shaped channels 13:
the formula of the Z-shaped periodic function is f (x) kx + C, x ∈ (0,0.5T), f (x +0.5T) -f (x), hzSatisfies the relation h as requiredzIs more than or equal to CR, h in the embodimentz＝2R2Thereby ensuring that the placement of the S-shaped channels 15 is not affected.
When the heat exchanger is in operation, let bz＝hzSo as to meet the strength requirement of the wall of the heat exchange core body.
From the Z-shaped geometry, the curve function of the Z-shaped channel 13 can be determined as f (x) -Rx/0.5T +2R, where T-B/nR and n-1, 2, 3.; b% nR ═ 0; r is more than or equal to 1 and less than or equal to 3mm, and the number of the Z-shaped channels 13 is mz＝([λL/bz]+1)·([λH/hz]+1)；
According to the function expression, the space utilization expression of the heat exchange core body is
The higher the space utilization rate of the heat exchange core body is, the larger the heat exchange area is, so that the S-shaped channel 15 and the linear channel 13 are effectively designed and arranged, the working fluid is uniformly distributed in the whole heat exchanger, and the heat exchange is uniform. In addition, the hemispherical grooves 14 are arranged on the S-shaped groove 15 and the linear groove 13, and the groove diameter R is 0.1R, so that the hemispherical grooves 14 can effectively reduce the reynolds number, and thus the heat exchange area is large and the heat exchange efficiency is high.
During operation, liquid flows in from feed pipe 2, gets into from material feeding cavity 7a, fills the hemisphere cavity after, because the pressure effect, liquid gets into heat exchange core 9a and heat exchange core 9b through S-shaped channel 15 on the heat exchange core and carries out the heat transfer, then flows into material discharging cavity 7b, flows out through ejection of compact pipeline 3.
Gas flows in from the heat exchange medium feeding pipeline 4, enters from the heat exchange medium feeding cavity 8a, is filled with the ellipsoidal cavity, and then enters the heat exchange core body 9a and the heat exchange core body 9b for heat transfer through the Z-shaped channel 13 on the heat exchange core body under the action of pressure, then flows in 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, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A novel F L NG heat exchanger with S-shaped and Z-shaped composite channels is characterized by comprising a heat exchange cylinder body, wherein when the heat exchange cylinder body is horizontally arranged, the long axis direction of the heat exchange cylinder body is limited to be a first direction, and the direction vertical to the first direction is a second direction;
the heat exchange device comprises a heat exchange cylinder, a heat exchange cavity, a pair of material feeding cavity, a displacement cavity and a material discharging cavity, wherein the heat exchange cavity is arranged in the heat exchange cylinder, the material feeding cavity, the displacement cavity and the material discharging cavity are horizontally and parallelly distributed in the heat exchange cylinder, 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 communicated with the displacement cavity, a heat exchange core is arranged in the displacement cavity, the cavity positioned at the upper part of the heat exchange core in the displacement cavity is a heat;
the heat exchange core body comprises a heat exchange core box, two channel groups are arranged in the heat exchange core box, one channel group is a horizontal channel group communicated with a material feeding cavity and a material discharging cavity, the other channel group is a vertical 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 further formed in the heat exchange core box, through holes communicated with one channel group are formed in a partition plate, the horizontal channel group and the vertical channel group are provided with a plurality of groups, and the horizontal channel group and the vertical channel group are distributed at intervals;
in both sets, each channel in one set is an S-shaped channel, making that set an S-shaped set, and each channel in the other set is a Z-shaped channel, making that set a Z-shaped set.
2. The novel F L NG heat exchanger with S-shaped and Z-shaped composite channels as claimed in claim 1, wherein the horizontal channel groups are arranged in several groups, and are distributed in parallel along the horizontal direction perpendicular to the first direction, each group of horizontal channel groups is composed of several horizontal channels distributed in parallel along the second direction, and the horizontal channels extend along the first direction;
the vertical channel groups are arranged in groups and distributed in parallel along the horizontal direction perpendicular to the first direction, each vertical channel group consists of a plurality of vertical channels distributed in parallel along the second direction, and the vertical channels extend along the second direction.
3. The novel F L NG heat exchanger with S-shaped and Z-shaped composite channels as claimed in claim 2, wherein the S-shaped channels are gas flow channels, i.e. vertical channels, and the Z-shaped channels are semicircular in cross section, i.e. horizontal channels, for liquid flow;
defining the length of the heat exchange core as L, the width as B, the height as H, the diameter of the circle of the cross section of the two channels as R, and the horizontal distance between the adjacent S-shaped channels distributed along the direction vertical to the second direction as BsThe wave crest and the wave trough of the S-shaped channel change along the direction vertical to the first direction and the second direction, and the vertical distance along the first direction is hsThe Z-shaped channel arrangement form is similar to the S-shaped channel arrangement form, the wave crests and the wave troughs of the Z-shaped channels change along the direction vertical to the first direction, and the horizontal distance between the adjacent Z-shaped channels distributed along the direction vertical to the first direction is bzA vertical spacing h along the first directionz(ii) a The vertical interval between the S-shaped channel and the Z-shaped channel is
In the S-shaped channel, the waveform of the S-shaped channel is not influenced by the Z-shaped channel, but only influenced by the diameter R of the section circle of the S-shaped channel, if the amplitude is too large, the arrangement quantity is influenced, if the perimeter is larger, the heat exchange area is influenced, if the amplitude is too small, the processing is influenced, therefore, the curve function of the S-shaped channel is that y is 2Rcos (pi x/L/nR), wherein n is 1,2,3, L% nR is 0, R is not less than 1 and not more than 3mm, and the quantity m of the S-shaped channel is not more than ms＝([λH/hs]+1)·([λB/bs]+1) of the formula (I)]Represents rounding, and lambda represents an effective coefficient between 0.8 and 0.9;
in the Z-shaped channel, the shape of the Z-shaped channel is not influenced by the S-shaped channel, is only related to the diameter R of the section circle of the Z-shaped channel, and influences the arrangement quantity if the amplitude is too large; if the perimeter is larger, the heat exchange area is influenced; if the amplitude is too small, the machining is affected. The curve function of the Z-shaped channel is therefore f (x) — Rx/0.5T +2R, where T ═ B/nR, n ═ 1,2, 3.; b% nR ═ 0; r is more than or equal to 1 and less than or equal to 3mm, and the number of Z-shaped channels is mz＝([λL/bz]+1)·([λH/hz]+1)；
According to the function expression, the space utilization expression of the heat exchange core body is
4. The novel F L NG heat exchanger with S-shaped and Z-shaped composite channels as claimed in claim 2, wherein the outer surfaces of the S-shaped and Z-shaped channels are respectively provided with a plurality of semispherical grooves which are distributed in parallel along the extending direction of the S-shaped or Z-shaped channel.
5. The novel F L NG heat exchanger with S-shaped and Z-shaped composite channels as claimed in claim 1, wherein there are two heat exchange cores sequentially distributed in the displacement chamber from top to bottom.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910811662X | 2019-08-30 | ||
| CN201910811662 | 2019-08-30 |
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| CN111442680A true CN111442680A (en) | 2020-07-24 |
| CN111442680B CN111442680B (en) | 2024-04-16 |
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| CN202010052755.1A Active CN111442680B (en) | 2019-08-30 | 2020-01-17 | Novel FLNG heat exchanger with S-shaped and Z-shaped composite channels |
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| WO2001014814A1 (en) * | 1999-08-25 | 2001-03-01 | Feng Lang | Heat exchanger |
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| WO2018124428A2 (en) * | 2016-12-26 | 2018-07-05 | 주식회사 코렌스 | Wavy fin for egr cooler |
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| CN211696019U (en) * | 2019-08-30 | 2020-10-16 | 江苏科技大学 | Novel FLNG heat exchanger with S-shaped and Z-shaped composite channels |
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| WO2001014814A1 (en) * | 1999-08-25 | 2001-03-01 | Feng Lang | Heat exchanger |
| US20100314087A1 (en) * | 2009-06-16 | 2010-12-16 | Daly Phillip F | Efficient Self Cooling Heat Exchanger |
| CN104896986A (en) * | 2015-06-09 | 2015-09-09 | 江苏科技大学 | High-efficiency compact type LNG carburetor |
| JP2017207237A (en) * | 2016-05-19 | 2017-11-24 | 新日鐵住金株式会社 | Heat exchanger |
| WO2018124428A2 (en) * | 2016-12-26 | 2018-07-05 | 주식회사 코렌스 | Wavy fin for egr cooler |
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| CN111442680B (en) | 2024-04-16 |
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