CN110008579A - The design method of vertical fins tubing heat exchanger - Google Patents
The design method of vertical fins tubing heat exchanger Download PDFInfo
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- CN110008579A CN110008579A CN201910256472.6A CN201910256472A CN110008579A CN 110008579 A CN110008579 A CN 110008579A CN 201910256472 A CN201910256472 A CN 201910256472A CN 110008579 A CN110008579 A CN 110008579A
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Abstract
The present invention provides a kind of design method of vertical fins tubing heat exchanger, which includes the following steps: that a. determines total heat exchange amount of the vertical fins tubing heat exchanger；B. total heat exchange area is determined according to total heat exchange amount；C. the arrangement of the vertical fins heat exchanger tube of the vertical fins tubing heat exchanger is determined according to total heat exchange area；D. according to the flow direction of total heat exchange area of the vertical fins tubing heat exchanger, the parameter of the vertical fins heat exchanger tube of identified arrangement and air, the air side heat transfer coefficient and resistance coefficient of the vertical fins tubing heat exchanger are determined by experiment；E. calculation and check is carried out to the heat exchange area and resistance coefficient of the vertical fins tubing heat exchanger according to the air side heat transfer coefficient and the resistance coefficient；And f. carries out shaping the vertical fins tubing heat exchanger according to the calculation and check result, to obtain the product of sizing.
Description
Technical field
The present invention relates to fast reactor accident afterheats, and field is discharged, more particularly, to a kind of design side of air heat exchanger
Method.
Background technique
Currently, the basic principle of passive residual heat removal is Natural Circulation, that is, utilize the gravity of fluid, inertia, naturally right
The principles such as stream, diffusion, evaporation, condensation in accident conditions take residual heat of nuclear core out of.The setting of its corresponding system can simplify
Engineered safeguards features reduce equipment and component, have class to reduce personnel and intervene and issuable malfunction, improve man-computer relation,
Improve the inherent safety of nuclear power station.So technically, passive technology is advanced safe practice instantly, is represent
The development trend of nuclear power of new generation.
In order to meet passive requirement, large-scale fast reactor accident afterheat discharge system is designed as natural circulation mode.As
The important equipment air heat exchanger of accident afterheat discharge system, it is strong that design must combine exchange capability of heat, flow resistance
The principles such as small and compact-sized.By to existing structures such as vertical lighting tube-type, wave-fin cast and light pipe spiral casts
The air heat exchanger of form carries out argument and analysis it is found that these cylinder structures are far from meeting design requirement as described above.
Therefore, need to propose the air heat exchanger or this new-type air heat exchanger of proposition of a kind of Novel structure in the prior art
Design method, to meet large-scale fast heaping equipment to the design requirement of accident afterheat discharge system.
Summary of the invention
At least one of in order to solve the above-mentioned technical problem aspect, the embodiment provides a kind of vertical fins
The design method of tubing heat exchanger, the design method include the following steps:
A. total heat exchange amount of the vertical fins tubing heat exchanger is determined；
B. total heat exchange area is determined according to total heat exchange amount；
C. the cloth of the vertical fins heat exchanger tube of the vertical fins tubing heat exchanger is determined according to total heat exchange area
Set mode；
D. according to the vertical fins of total heat exchange area of the vertical fins tubing heat exchanger, identified arrangement
The parameter of heat exchanger tube and the flow direction of air, the air side for being determined by experiment the vertical fins tubing heat exchanger pass
Hot coefficient and resistance coefficient；
E. the vertical fins tubing heat exchanger is changed according to the air side heat transfer coefficient and the resistance coefficient
Heat area and resistance coefficient carry out calculation and check；And
F. the vertical fins tubing heat exchanger is carried out shaping according to the calculation and check result, to be formed
Product.
One embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the step a include
Determine that total heat exchange amount, the groundwork parameter include sky according to the groundwork parameter of the vertical fins tubing heat exchanger
Gas side flow, air-side temperature, sodium effluent amount and sodium side temperature.
In another embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the step
B includes providing the overall heat-transfer coefficient K assumed, and determine heat exchange area according to the following formula:
Wherein, A is the heat exchange area of vertical fins tubing heat exchanger, and K is the overall heat-transfer coefficient assumed, Δ TmFor sodium and
The logarithmic mean temperature difference (LMTD) of air.
The further embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the step c packet
The quantity for determining heat exchanger tube according to total heat exchange area is included, and determines the cloth of the heat exchanger tube according to the quantity of the heat exchanger tube
Set mode.
In a still further embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, according to described
The quantity of heat exchanger tube determines that the arrangement of the heat exchanger tube includes the arrangement layer that heat exchanger tube is determined according to the size of heat exchanger
Number determines the quantity of first layer heat exchanger tube according to the arrangement number of plies, and determines the heat exchanger tube according to the spacing of heat exchanger tube
Each layer quantity.
Another embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the first layer change
The quantity of heat pipe is determined by following formula:
Wherein, N1 is the quantity of first layer heat exchanger tube；NG is the number of plies of heat exchanger tube, and NN is the total quantity of heat exchanger tube.
In another embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, in the step
Further comprising the steps of c1 after rapid c:
C1. total biography of the vertical fins tubing heat exchanger is calculated according to the arrangement of the vertical fins heat exchanger tube
Hot COEFFICIENT K ', and according to the difference between the overall heat-transfer coefficient K ' and the overall heat-transfer coefficient K of the hypothesis to total biography of hypothesis
Hot COEFFICIENT K is modified, and repeats step b- step c1, until the difference is within a predetermined range.
The further embodiment of the design method of vertical fins tubing heat exchanger according to the present invention calculates total biography
Hot COEFFICIENT K ' the step of include:
It is calculate by the following formula the sodium side heat transfer coefficient h of the vertical fins tubing heat exchangeri:
Wherein, λiFor the thermal coefficient of sodium, diFor the internal diameter of heat exchanger tube, Pe is Berkeley number；
It is calculate by the following formula the air side heat transfer coefficient h of the vertical fins tubing heat exchanger0:
Wherein, λ0For air conduction coefficient, d0For the outer diameter of heat exchanger tube, Re is Reynolds number, and Pr is Prandtl number, SfTo change
Spacing between the fin of heat pipe, H are the height of the fin of heat exchanger tube；
It is calculate by the following formula total Coefficient K ':
Wherein, λ is the thermal coefficient of heat exchanger tube.
In a still further embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, to hypothesis
Overall heat-transfer coefficient K is modified the value of the value substitution K including the use of K '.
Another embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, in the step d
The step of being determined by experiment the air side heat transfer coefficient and resistance coefficient of the vertical fins tubing heat exchanger include with
Lower step:
D1. according to the operating parameter of the vertical fins tubing heat exchanger, experiment condition is selected and is designed；
D2. equipment used by according to experiment condition to testing carries out type selecting, to form the experiment porch for experiment；
D3. systematicness heat transfer and drag characteristic experiment, test temperature, air velocity and punching are carried out on the experiment porch
Brush angle obtains vertical fins under different working conditions and changes to the practical heat exchange amount of vertical fins heat-exchanging tube bundle and the influence of flow resistance
The practical heat exchange amount of heat pipe bundle and effective experimental data of flow resistance；And
D4. the experimental data is handled and is analyzed, obtained air along different angle and wash away vertical fins heat exchanger tube
When air side heat transfer coefficient and resistance coefficient calculation formula.
In another embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the air
The calculation formula of the heat transfer coefficient of side are as follows:
When air washes away the vertical fins heat exchanger tube with an angle of 90 degrees, it is calculate by the following formula each row's vertical fins heat exchanger tube
Air side heat transfer coefficient:
1st row's vertical fins heat exchanger tube:
Nu1=5.63296Re0.45096Pr1/3
2nd row's vertical fins heat exchanger tube:
Nu2=12.62348Re0.38424Pr1/3
3rd row and the 4th row's vertical fins heat exchanger tube:
Nu3、4=4.02015Re0.49126Pr1/3
5th row and the 6th row's vertical fins heat exchanger tube:
Nu5、6=3.28158Re0.51712Pr1/3
7th row's vertical fins heat exchanger tube:
Nu7=2.39323Re0.54398Pr1/3
8th row's vertical fins heat exchanger tube:
Nu8=2.6135Re0.53097Pr1/3
When air washes away the vertical fins heat exchanger tube with 30 degree of angles, it is calculate by the following formula each row's vertical fins heat exchanger tube
Air side heat transfer coefficient:
1st row's vertical fins heat exchanger tube:
Nu1=1.60875Re0.54165Pr1/3
2nd row's vertical fins heat exchanger tube:
Nu2=5.80394R e0.43639Pr1/3
3rd row, the 4th row and the 5th row's vertical fins heat exchanger tube:
Nu3、4、5=2.73359Re0.50906Pr1/3
6th row and the 7th row's vertical fins heat exchanger tube:
Nu6、7=2.12396Re0.54129Pr1/3
8th row's vertical fins heat exchanger tube:
Nu8=250646Re0.51349Pr1/3
Wherein, Re is Reynolds number, and Pr is Prandtl number.
The further embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the meter of resistance coefficient
Calculate formula are as follows:
When air washes away the vertical fins heat exchanger tube with an angle of 90 degrees, resistance coefficient f are as follows:
F=18.16112Re-0.35282(1000≤Re≤8000)
F=3.72999Re-0.17235(8000 Re≤24000 <)
When air washes away the vertical fins heat exchanger tube with 30 degree of angles, resistance coefficient f are as follows:
F=2597.24548Re-1.00785(900≤Re≤5000)
F=3.34691Re-0.21965(5000 Re≤24000 <),
Wherein, Re is Reynolds number.
In a still further embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the step
E the following steps are included:
E1. thermal region is exchanged according to the result of the experiment to be divided；
E2. according to total heat exchange area of the identified vertical fins tubing heat exchanger, to the temperature of air intake,
The temperature of flow and air outlet slit, the temperature of flow and sodium entrance, flow and the temperature of sodium outlet, flow measure；
E3. the biography obtained by experiment is chosen to the different location in each of the various heat exchange region divided region
Hot coefficient；And
E4. the heat exchange amount of each heat exchange area is calculated, to obtain total heat exchange amount and total resistance.
Another embodiment of the design method of vertical fins tubing heat exchanger according to the present invention, the heat transfer coefficient
Tube wall heat conduction coefficient including sodium side heat transfer coefficient, air side heat transfer coefficient and heat exchanger tube.
Compared with prior art, the invention has the advantages that at least one of:
(1) design method of vertical fins tubing heat exchanger according to the present invention can be tested by theoretical modeling and experiment
The mode of card realizes the design project of vertical fins tubing heat exchanger, provides a kind of more safe and reliable design method,
Solve the problems, such as that existing design of heat exchanger method is not able to satisfy the design of vertical fins tubular radiator.
(2) design method according to the present invention has determined the heat-transfer character of the air side of heat exchanger and the meter of drag characteristic
Calculation problem proposes corresponding calculation formula, so that the design and experiment for heat exchanger provide more structurally sound theoretical foundation.
Detailed description of the invention
By the description made for the present invention of below with reference to attached drawing, other objects and advantages of the present invention will be aobvious and easy
See, and can help that complete understanding of the invention will be obtained.
Fig. 1 is the design flow diagram of the design method of vertical fins tubing heat exchanger according to the present invention.
It should be noted that attached drawing is not necessarily been drawn to scale, but only not influence the schematic side that reader understands
Formula is shown.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the attached drawing of the embodiment of the present invention,
Technical solution of the present invention is clearly and completely described.Obviously, described embodiment is an implementation of the invention
Example, instead of all the embodiments.Based on described the embodiment of the present invention, those of ordinary skill in the art are without creating
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless otherwise defined, the technical term or scientific term that the present invention uses should be tool in fields of the present invention
The ordinary meaning for thering is the personage of general technical ability to be understood.
Vertical fins tubing heat exchanger is very different with conventional heat exchanger, the air angle washed away of exchange heat pipe with
The difference of position and it is different, heat-transfer character and drag characteristic are also different and change with angle is washed away, therefore its design method is not
It can be using the design method of traditional fin tube type heat exchanger.
Inventor proposes a kind of design method of vertical fins tubing heat exchanger, by this by theory analysis
For the vertical fins tubing heat exchanger of method design when meeting same heat exchange amount, flow resistance is smaller, and structure is more compact,
Therefore it is highly suitable for the discharge of large-scale fast reactor accident afterheat.Heat exchanger designs method in compared to the prior art is more special
Note is used for the design of this vertical fins tubing heat exchanger.
The main technical schemes for establishing the design method of vertical fins tubing heat exchanger are, first according to system condition and
Vertical fins tubing heat exchanger organization plan, determine the running parameter of air heat exchanger, the structural parameters of finned tube and
The factors such as air-flow direction；Then, heat exchange area is primarily determined according to the calculation formula of existing finned tube heat transfer coefficient；It connects
, the heat transfer and friction characteristics experiment of high temperature fin tube type heat exchanger is carried out, determines air side heat-transfer character and drag characteristic
Calculation formula；Then, it is exchanged heat according to the calculation formula and vertical fins of testing identified heat-transfer character and drag characteristic
The cloth tube model of pipe completes the foundation of the design method of vertical fins tubing heat exchanger；Finally, being hung down according to experimental result
The calculation and check of straight fins tubing heat exchanger, determines whether heat exchange amount and flow resistance meet the requirements.
Illustrate the design method of vertical fins tubing heat exchanger according to the present invention, the design method referring to the drawings
Specific implementation process be divided into theoretical modeling stage and experimental study stage, pass through the theoretical modeling stage realize vertical fins tubular type
The structure of heat exchanger designs, and can carry out the trial-production of sample according to this, may be implemented to comment sample by the experimental study stage
Valence and improvement.
Firstly, determining total heat exchange amount of vertical fins tubing heat exchanger.Total heat exchange amount can be according to vertical fins tubular type
The groundwork parameter of heat exchanger is determined, and above-mentioned groundwork parameter may include two kinds of heat transferring mediums of heat exchanger
Parameter, i.e. air side flow, air-side temperature and sodium effluent amount and sodium side temperature.
Then, required total heat exchange area can be determined according to total heat exchange amount.Total heat transfer system of hypothesis can be provided herein
Number is K, and (1) can determine total heat exchange area according to the following formula:
In formula (1), A is total heat exchange area of vertical fins tubing heat exchanger, and K is the overall heat-transfer coefficient assumed, Δ
TmFor the logarithmic mean temperature difference (LMTD) of heat exchanger two sides.
Then, the arrangement side of the vertical fins heat exchanger tube of vertical fins tubing heat exchanger is determined according to total heat exchange area
Formula.Specifically, the quantity of heat exchanger tube can be determined according to total heat exchange area, and the cloth of heat exchanger tube is determined according to the quantity of heat exchanger tube
Set mode.After determining total heat exchange area, heat exchanger tube can be obtained by the area ratio of total heat exchange area and single heat exchange tube
Quantity；The stringing number of plies of heat exchanger tube is primarily determined according to the size of heat exchanger requirement (the mainly arrangement requirement of workshop).Into
One step, the quantity of first layer heat exchanger tube can be determined according to the arrangement number of plies, and heat exchanger tube is determined according to the spacing of heat exchanger tube
Each layer quantity.Wherein, the quantity of first layer heat exchanger tube is determined by following formula (2):
In formula (2), N1 is the quantity of first layer heat exchanger tube；NG is the number of plies of heat exchanger tube, and NN is the total quantity of heat exchanger tube.
It is further comprising the steps of after the arrangement for determining vertical fins heat exchanger tube, that is, to be exchanged heat according to vertical fins
The arrangement of pipe calculates the overall heat-transfer coefficient K ' of vertical fins tubing heat exchanger, then according to overall heat-transfer coefficient K ' and hypothesis
Overall heat-transfer coefficient K between difference the overall heat-transfer coefficient K of hypothesis is modified, and repeat the step of step before this
Suddenly, until the difference between overall heat-transfer coefficient K ' and the overall heat-transfer coefficient K assumed is within a predetermined range.
Wherein, calculate overall heat-transfer coefficient K ' the following steps are included:
Firstly, calculating the sodium side heat transfer coefficient h of vertical fins tubing heat exchanger by following formula (3)i:
In formula (3), λiFor the thermal coefficient of sodium, diFor the internal diameter of heat exchanger tube, Pe is Berkeley number.
Then, the air side heat transfer coefficient h of vertical fins tubing heat exchanger is calculated by following formula (4)0:
In formula (4), λ0For air conduction coefficient, d0For the outer diameter of heat exchanger tube, Re is Reynolds number, and Pr is Prandtl number, Sf
For the spacing between the fin of heat exchanger tube, H is the height of the fin of heat exchanger tube.
Finally, calculating total Coefficient K by following formula (5) ':
In formula (5), λ is the thermal coefficient of heat exchanger tube.
Here, the step of overall heat-transfer coefficient K to hypothesis is modified carries out formula including the use of the value of the value substitution K of K '
(1) total heat exchange area A in recalculate and relevant subsequent step, until the difference of the value of the value and K of K ' obtained
It is worth within a predetermined range, for example the difference is less than 0.01.
The step of being determined by experiment the air side heat transfer coefficient and resistance coefficient of vertical fins tubing heat exchanger can
To include the following steps:
According to the operating parameter of vertical fins tubing heat exchanger, experiment condition is selected and is designed；According to experiment
Operating condition carries out type selecting to used equipment is tested, to form the experiment porch for experiment；It is carried out on the experiment porch
Systematicness heat transfer and drag characteristic experiment, test temperature, air velocity and wash away angle to the reality of vertical fins heat-exchanging tube bundle
The influence of heat exchange amount and flow resistance obtains the effective of the practical heat exchange amount and flow resistance of vertical fins heat-exchanging tube bundle under different working conditions
Experimental data；And experimental data is handled and is analyzed, when acquisition air washes away vertical fins heat exchanger tube along different angle
Air side heat transfer coefficient and resistance coefficient calculation formula.It can be designed herein by experiment according to above-mentioned design method
Heat exchanger verified, and made improvements according to verification result.
Based on experimental data, data processing and theory analysis are carried out, vertical fins tubular heat exchange can be instructed by proposing
The air of the design method of device washes away the heat transfer coefficient of finned tube and the calculation formula of resistance coefficient along different angle, specifically such as
Under.
In terms of the heat transfer coefficient for testing obtained different pipe rows when air washes away vertical fins heat exchanger tube by an angle of 90 degrees
Calculate relational expression (6)-(11):
1st row's vertical fins heat exchanger tube:
Nu1=5.63296Re0.45096Pr1/3 (6)
2nd row's vertical fins heat exchanger tube:
Nu2=12.62348Re0.38424Pr1/3 (7)
3rd row and the 4th row's vertical fins heat exchanger tube:
Nu3、4=4.02015Re0.49126Pr1/3 (8)
5th row and the 6th row's vertical fins heat exchanger tube:
Nu5、6=3.28158Re0.51712Pr1/3 (9)
7th row's vertical fins heat exchanger tube:
Nu7=2.39323Re0.54398Pr1/3 (10)
8th row's vertical fins heat exchanger tube:
Nu8=2.6135Re0.53097Pr1/3 (11)
The calculation relational expression (12)-for the resistance coefficient tested when air washes away vertical fins heat exchanger tube with an angle of 90 degrees
(13):
F=18.16112Re-0.35282(1000≤Re≤8000) (12)
F=3.72999Re-0.17235(8000 Re≤24000 <) (13)
The heat transfer coefficient of the different pipes row obtained when air washes away vertical fins heat exchanger tube with 30 degree of angles by experiment
Calculation relational expression (14)-(18):
1st row's vertical fins heat exchanger tube:
Nu1=1.60875Re0.54165Pr1/3 (14)
2nd row's vertical fins heat exchanger tube:
Nu2=5.80394Re0.43639Pr1/3 (15)
3rd row, the 4th row and the 5th row's vertical fins heat exchanger tube:
Nu3、4、5=2.73359Re0.50906Pr1/3 (16)
6th row and the 7th row's vertical fins heat exchanger tube:
Nu6、7=2.12396Re0.54129Pr1/3 (17)
8th row's vertical fins heat exchanger tube:
Nu8=2.50646Re0.51349Pr1/3 (18)
It is the calculation relational expression for testing obtained resistance coefficient when air washes away vertical fins heat exchanger tube with 30 degree of angles
(19)-(20):
F=2597.24548Re-1.00785(900≤Re≤5000) (19)
F=3.34691Re-0.21965(5000 Re≤24000 <) (20)
Finally, heat exchange area and resistance according to air side heat transfer coefficient and resistance coefficient to vertical fins tubing heat exchanger
Force coefficient carries out calculation and check, when carrying out calculation and check, exchanges thermal region according to experimental result first and is divided, according to heat
The heat exchange area of the Preliminary design of exchanger enters the temperature of the temperature of air intake, flow and air outlet slit, flow and sodium
The temperature of mouth, the temperature of flow and sodium outlet, flow measure, for example three row's heat exchanger tubes are divided into three heat exchange areas.So
The heat transfer coefficient obtained by experiment, including sodium side are chosen for the different location in each of various heat exchange region region afterwards
The tube wall heat conduction coefficient of heat transfer coefficient, air side heat transfer coefficient and heat exchanger tube, then calculates the heat exchange amount of each heat exchange area,
Total heat exchange amount and total resistance are finally obtained, in the case where total heat exchange amount and total resistance meet system requirements, then
Vertical fins tubing heat exchanger is carried out shaping according to calculation and check result, to obtain the product of sizing.
The structure and traditional heat exchangers of vertical fins tubing heat exchanger have very big difference, the heat exchange of this structure
Air heat-transfer character and drag characteristic in device can change the difference for washing away angle of vertical fins heat exchanger tube with air.
But the finned tube air side heat transmission resistance characteristic in existing literature data is directed to the case where air vertically washes away finned tube mostly,
The design for being not properly suited for the vertical fins heat exchanger tube of vertical fins tubing heat exchanger calculates.And air heat exchanger conduct
The important heat exchange equipment of passive natural circulation accident afterheat discharge system, design not only need to meet heat exchange amount requirement and
And the small requirement of resistance is taken into account, so needing to carry out test when establishing the design method of vertical fins tubing heat exchanger true
Its fixed heat transmission resistance characteristic.
The design method of vertical fins tubing heat exchanger according to the present invention passes through theoretical modeling and experimental verification two
Aspect is designed vertical fins heat exchanger tube, and the design method for solving existing fin heat exchange pipe in the prior art is not applicable
In the vertical fins tubular radiator the problem of.Design method according to the present invention also passes through the biography of the air side of determining heat exchanger
The computational problem of thermal characteristics and drag characteristic proposes corresponding calculation formula, so that the design and improvement for heat exchanger mention
For more structurally sound theoretical foundation.
For the embodiment of the present invention, it is also necessary to explanation, in the absence of conflict, the embodiment of the present invention and reality
Applying the feature in example can be combined with each other to obtain new embodiment.
More than, only a specific embodiment of the invention, but scope of protection of the present invention is not limited thereto, and it is of the invention
Protection scope should be subject to the protection scope in claims.
Claims (14)
1. a kind of design method of vertical fins tubing heat exchanger, includes the following steps:
A. total heat exchange amount of the vertical fins tubing heat exchanger is determined；
B. total heat exchange area is determined according to total heat exchange amount；
C. the arrangement side of the vertical fins heat exchanger tube of the vertical fins tubing heat exchanger is determined according to total heat exchange area
Formula；
D. it is exchanged heat according to the vertical fins of total heat exchange area of the vertical fins tubing heat exchanger, identified arrangement
The parameter of pipe and the flow direction of air are determined by experiment the air side heat transfer system of the vertical fins tubing heat exchanger
Several and resistance coefficient；
E. according to the air side heat transfer coefficient and the resistance coefficient to the heat-transfer surface of the vertical fins tubing heat exchanger
Long-pending and resistance coefficient carries out calculation and check；And
F. the vertical fins tubing heat exchanger is carried out shaping according to the calculation and check result, to obtain the production of sizing
Product.
2. the design method of vertical fins tubing heat exchanger according to claim 1, wherein the step a includes root
Total heat exchange amount is determined according to the groundwork parameter of the vertical fins tubing heat exchanger, and the groundwork parameter includes air
Effluent amount, air-side temperature, sodium effluent amount and sodium side temperature.
3. the design method of vertical fins tubing heat exchanger according to claim 1, wherein the step b includes mentioning
For the overall heat-transfer coefficient K of hypothesis, and total heat exchange area is determined according to the following formula:
Wherein, A is total heat exchange area of vertical fins tubing heat exchanger, and K is the overall heat-transfer coefficient assumed, and Δ Tm is heat exchange
The logarithmic mean temperature difference (LMTD) of device two sides.
4. the design method of vertical fins tubing heat exchanger according to claim 1, wherein the step c includes root
The quantity of heat exchanger tube is determined according to total heat exchange area, and the arrangement side of the heat exchanger tube is determined according to the quantity of the heat exchanger tube
Formula.
5. the design method of vertical fins tubing heat exchanger according to claim 4, wherein according to the heat exchanger tube
Quantity determines that the arrangement of the heat exchanger tube includes the arrangement number of plies that heat exchanger tube is determined according to the size of heat exchanger, according to institute
It states the arrangement number of plies and determines the quantity of first layer heat exchanger tube, and determine according to the spacing of heat exchanger tube the number of each layer of the heat exchanger tube
Amount.
6. the design method of vertical fins tubing heat exchanger according to claim 5, wherein the first layer heat exchanger tube
Quantity determined by following formula:
Wherein, N1 is the quantity of first layer heat exchanger tube；NG is the number of plies of heat exchanger tube, and NN is the total quantity of heat exchanger tube.
7. the design method of vertical fins tubing heat exchanger according to claim 1, wherein after the step c
Further comprising the steps of c1:
C1. it is according to total heat transfer that the arrangement of the vertical fins heat exchanger tube calculates the vertical fins tubing heat exchanger
Number K ', and be according to total heat transfer of the difference between the overall heat-transfer coefficient K ' and the overall heat-transfer coefficient K of the hypothesis to hypothesis
Number K is modified, and repeats step b- step c1, until the difference is within a predetermined range.
8. the design method of vertical fins tubing heat exchanger according to claim 7, wherein calculate total heat transfer system
Number K ' the step of include:
It is calculate by the following formula the sodium side heat transfer coefficient hi of the vertical fins tubing heat exchanger:
Wherein, λ i is the thermal coefficient of sodium, and di is the internal diameter of heat exchanger tube, and Pe is Berkeley number；
It is calculate by the following formula the air side heat transfer coefficient h0 of the vertical fins tubing heat exchanger:
Wherein, λ 0 is air conduction coefficient, and d0 is the outer diameter of heat exchanger tube, and Re is Reynolds number, and Pr is Prandtl number, and Sf is heat exchanger tube
Fin between spacing, H be heat exchanger tube fin height；
It is calculate by the following formula total Coefficient K ':
Wherein, λ is the thermal coefficient of heat exchanger tube.
9. the design method of vertical fins tubing heat exchanger according to claim 7 or 8, wherein to total biography of hypothesis
Hot COEFFICIENT K is modified the value of the value substitution K including the use of K '.
10. the design method of vertical fins tubing heat exchanger according to claim 1, wherein pass through in the step d
Experiment determines that the step of air side heat transfer coefficient and resistance coefficient of the vertical fins tubing heat exchanger includes following step
It is rapid:
D1. according to the operating parameter of the vertical fins tubing heat exchanger, experiment condition is selected and is designed；
D2. equipment used by according to experiment condition to testing carries out type selecting, to form the experiment porch for experiment；
D3. systematicness heat transfer and drag characteristic experiment are carried out on the experiment porch, test temperature, air velocity and wash away angle
Degree obtains vertical fins heat exchanger tube under different working conditions to the practical heat exchange amount of vertical fins heat-exchanging tube bundle and the influence of flow resistance
The practical heat exchange amount of beam and effective experimental data of flow resistance；And
D4. the experimental data is handled and is analyzed, obtained when air washes away vertical fins heat exchanger tube along different angle
The heat transfer coefficient of air side and the calculation formula of resistance coefficient.
11. the design method of vertical fins tubing heat exchanger according to claim 10, wherein the biography of the air side
The calculation formula of hot coefficient are as follows:
When air washes away the vertical fins heat exchanger tube with an angle of 90 degrees, it is calculate by the following formula the sky of each row's vertical fins heat exchanger tube
Gas side heat transfer coefficient:
1st row's vertical fins heat exchanger tube:
Nu1=5.63296Re0.45096Pr1/3
2nd row's vertical fins heat exchanger tube:
Nu2=12.62348Re0.38424Pr1/3
3rd row and the 4th row's vertical fins heat exchanger tube:
Nu3、4=4.02015Re0.49126Pr1/3
5th row and the 6th row's vertical fins heat exchanger tube:
Nu5、6=3.28158Re0.51712Pr1/3
7th row's vertical fins heat exchanger tube:
Nu7=2.39323Re0.54398Pr1/3
8th row's vertical fins heat exchanger tube:
Nu8=2.6135Re0.53097Pr1/3
When air washes away the vertical fins heat exchanger tube with 30 degree of angles, it is calculate by the following formula the sky of each row's vertical fins heat exchanger tube
Gas side heat transfer coefficient:
1st row's vertical fins heat exchanger tube:
Nu1=1.60875Re0.54165Pr1/3
2nd row's vertical fins heat exchanger tube:
Nu2=5.80394Re0.43639Pr1/3
3rd row, the 4th row and the 5th row's vertical fins heat exchanger tube:
Nu3、4、5=2.73359Re0.50906Pr1/3
6th row and the 7th row's vertical fins heat exchanger tube:
Nu6、7=2.12396Re0.54129Pr1/3
8th row's vertical fins heat exchanger tube:
Nu8=2.50646Re0.51349Pr1/3
Wherein, Re is Reynolds number, and Pr is Prandtl number.
12. the design method of vertical fins tubing heat exchanger according to claim 10, wherein the calculating of resistance coefficient
Formula are as follows:
When air washes away the vertical fins heat exchanger tube with an angle of 90 degrees, resistance coefficient f are as follows:
F=18.16112Re-0.35282(1000≤Re≤8000)
F=3.72999Re-0.17235(8000 Re≤24000 <)
When air washes away the vertical fins heat exchanger tube with 30 degree of angles, resistance coefficient f are as follows:
F=2597.24548Re-1.00785(900≤Re≤5000)
F=3.34691Re-0.21965(5000 Re≤24000 <),
Wherein, Re is Reynolds number.
13. the design method of vertical fins tubing heat exchanger according to claim 1, wherein the step e include with
Lower step:
E1. thermal region is exchanged according to the result of the experiment to be divided；
E2. according to total heat exchange area of the identified vertical fins tubing heat exchanger, temperature, flow to air intake
It is measured with the temperature of the temperature of air outlet slit, the temperature of flow and sodium entrance, flow and sodium outlet, flow；
E3. the heat transfer system obtained by experiment is chosen to the different location in each of the various heat exchange region divided region
Number；And
E4. the heat exchange amount of each heat exchange area is calculated, to obtain total heat exchange amount and total resistance.
14. the design method of vertical fins tubing heat exchanger according to claim 13, wherein the heat transfer coefficient packet
Include the tube wall heat conduction coefficient of sodium side heat transfer coefficient, air side heat transfer coefficient and heat exchanger tube.
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