CN106123373B - The hot water storage tank that a kind of fin extends to different directions - Google Patents

The hot water storage tank that a kind of fin extends to different directions Download PDF

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Publication number
CN106123373B
CN106123373B CN201610461813.XA CN201610461813A CN106123373B CN 106123373 B CN106123373 B CN 106123373B CN 201610461813 A CN201610461813 A CN 201610461813A CN 106123373 B CN106123373 B CN 106123373B
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China
Prior art keywords
heat
sloping
hot water
tube
dissipating pipe
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CN201610461813.XA
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CN106123373A (en
Inventor
赵炜
朱士强
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Su Normal University Semiconductor Materials and Equipment Research Institute Pizhou Co Ltd
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Yu Renlin
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Priority to CN201610461813.XA priority Critical patent/CN106123373B/en
Priority to CN201510723274.8A priority patent/CN105202779B/en
Publication of CN106123373A publication Critical patent/CN106123373A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00Arrangements for storing heat collected by solar heat collectors
    • F24S60/30Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/30Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/70Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0008Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0025Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes
    • F28D7/0033Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being flat tubes or arrays of tubes the conduits for one medium or the conduits for both media being bent
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/02Tubular elements of cross-section which is non-circular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/124Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of pins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/40Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00Solar heat collectors using working fluids
    • F24S10/70Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • F24S2010/751Special fins
    • F24S2010/752Special fins extending obliquely
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24SSOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S2080/03Arrangements for heat transfer optimization
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00Fins
    • F28F2215/10Secondary fins, e.g. projections or recesses on main fins
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/40Solar thermal energy, e.g. solar towers
    • Y02E10/44Heat exchange systems

Abstract

The present invention provides a kind of solar heat-preservation water tanks, and including heat collector, hot water storage tank and heat-dissipating pipe, heat-dissipating pipe is arranged in hot water storage tank, and the hot water of the heat collector heating transfers heat to hot water storage tank by heat-dissipating pipe by heat-dissipating pipe;The heat-dissipating pipe is plate-fin heat-dissipating pipe, the plate-fin heat-dissipating pipe includes flat tube and the fin being arranged in flat tube, the fin includes the sloping portion for favouring tube wall, prominent point is processed by impact style on sloping portion, the prominent point is isosceles triangle, and the base of the isosceles triangle is arranged on sloping portion, along the flow direction of fluid, multiple prominent points are set on sloping portion, and the prominent point extends to the not homonymy of sloping portion.The present invention is extended through prominent point to not homonymy, can realize higher heat exchange efficiency, reduces flow resistance, further energy saving.

Description

The hot water storage tank that a kind of fin extends to different directions
Technical field
The invention belongs to field of solar energy more particularly to a kind of solar energy systems of accumulation of heat.
Background technology
With the rapid development of modern social economy, the mankind are increasing to the demand of the energy.However coal, oil, day The traditional energies storage levels such as right gas constantly reduce, are increasingly in short supply, cause rising steadily for price, while conventional fossil fuel causes Problem of environmental pollution it is also further serious, these all limit the development of society and the raising of human life quality significantly.The energy Problem has become most one of distinct issues of contemporary world.Thus seek the new energy, particularly free of contamination cleaning energy Source has become the hot spot of present people's research.
Solar energy is a kind of inexhaustible clean energy resource, and stock number is huge, and earth surface is received every year Solar radiant energy total amount be 1 × 1018KWh, for more than 10,000 times of the world year consumption gross energy.Countries in the world are all too It is positive can by the use of as important one of new energy development, the Chinese government exists《The government work report》Also clearly propose to accumulate already New energy is developed in pole, and wherein the utilization of solar energy is especially in occupation of prominent position.It is reached yet with solar radiation tellurian Energy density is small(About one kilowatt every square metre), and be discontinuous again, this brings certain tired to large-scale utilization It is difficult.Therefore, in order to utilize solar energy extensively, not only to solve the problems, such as technical, but also economically must be able to conventional energy Source mutually competes.
Under normal circumstances, the water of heat collector heating is needed to pass to other fluids by way of heat exchange or carried out Storage.But the water circulation system of solar thermal collection system is the system of a closing, recirculated water circulating-heating, but cycling Some on-condensible gases can be generated in water cycle process, in addition, in the case that sometimes sunray is strong, the water meeting in heat collector Carbonated drink hot water is formed, therefore in the case where the water of heating is exchanged heat, because there are on-condensible gas or because forming carbonated drink Hot water, so as to cause the reduction of the coefficient of heat transfer so that solar energy can not make full use of.
In view of the above-mentioned problems, the present invention provides a kind of new solar heat-preservation system, so as to solve solar water with Its fluid exchanged heat in the case of the coefficient of heat transfer it is low the problem of.
The content of the invention
The present invention provides a kind of new solar energy system, so as to solve the technical issues of front occurs.
To achieve these goals, technical scheme is as follows:
A kind of solar energy system, including heat collector, hot water storage tank and heat-dissipating pipe, heat-dissipating pipe is arranged in hot water storage tank, institute The hot water of heat collector heating is stated by heat-dissipating pipe, hot water storage tank is transferred heat to by heat-dissipating pipe;It is it is characterized in that, described Heat-dissipating pipe is multiple heat-dissipating pipes of series connection.
Preferably, the heat-dissipating pipe is plate-fin heat-dissipating pipe, the plate-fin heat-dissipating pipe includes flat tube and is arranged on flat Fin in pipe, the flat tube include tube wall parallel to each other, and the fin is arranged between tube wall, and the fin includes tilting In the sloping portion of tube wall, prominent point is processed by impact style on sloping portion, so that the fluid of sloping portion both sides leads to Cross the hole connection that impact style is formed on sloping portion;The prominent point extends outwardly from sloping portion along hot water flow direction.
Preferably, the prominent point is isosceles triangle, the base of the isosceles triangle is arranged on sloping portion, no With plate wing heat-dissipating pipe in prominent point average length L it is different, L for isosceles triangle vertex to base midpoint distance.
Preferably, along the flow direction of hot water, L constantly increases.
Preferably, along the flow direction of hot water, the increased amplitudes of L are increasing.
Preferably, the fin includes horizontal component, the horizontal component and tube walls parallel and is attached to one with tube wall It rises, the sloping portion is connected with horizontal component;The prominent point is isosceles triangle, and the base of the isosceles triangle is arranged on On sloping portion, the distance of adjacent tube wall is H, and the length on isosceles triangle base is h, and the distance of adjacent sloping portion is W, the apex angle of isosceles triangle are b, and the angle of the extending direction of the prominent point and the flow direction of hot water is a, sloping portion and The angle of acute angle between tube wall is c, meets equation below:
c6*h/H=c1*Ln(L*sin(a)/(w*sin(c))+c2,
sin(b/2)=c3+c4*sin(a)-c5*(sin(a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5 are coefficients,
0.24<c1<0.25, 0.68<c2<0.70,0.87<c3<0.88,0.68< c4<0.70,1.14<c5<1.15,
7.0<c6<7.5;
19°<a<71 °, 55 °<b<165°,90°<c<70°;
10mm<w<15mm, 6mm<H<14mm;
0.19<L*sin(a)/w<0.41, 0.29<7*h/H<0.47;
H is with the distance between opposite face of adjacent tube wall, and W is along tube wall with the opposite face of adjacent sloping portion Distance on direction, L be isosceles triangle vertex to base midpoint distance.
Preferably, c1=0.245, c2=0.694,
C3=0.873, c4=0.691, c5=1.1454, c6=7.11.
Preferably, the angle of the flow direction of the extending direction and hot water of the prominent point is a, same rake sets up separately Multiple prominent points are put, along the flow direction of hot water, the angle a is increasing.
Preferably, same sloping portion sets multiple prominent points, multiple prominent points are staggeredly from two epitaxial lateral overgrowth of sloping portion It stretches.
Preferably, the length of the prominent point extension is L, same sloping portion sets multiple prominent points, along hot water Flow direction, the length L are less and less.
Preferably, the prominent point is isosceles triangle, the base of the isosceles triangle is arranged on sloping portion, is made To be preferred, base is identical with the angle of inclination of sloping portion, and the apex angle of the isosceles triangle is b, and same rake sets up separately Multiple prominent points are put, along the flow direction of hot water, the apex angle b is increasing.
Preferably, the prominent point is isosceles triangle, the base of the isosceles triangle is arranged on sloping portion, is made To be preferred, base is identical with the angle of inclination of sloping portion, and the base of the isosceles triangle is S1, and same rake sets up separately Multiple prominent points are put, along the flow direction of hot water, the S1 is less and less.
Compared with prior art, plate heat exchanger of the invention and its heat exchange tube wall have the following advantages:
1)The heat-dissipating pipe of the present invention is multiple for parallel connection, by setting the heat-dissipating pipe of multiple parallel connections, can increase Heat exchange area enhances the heat storage capacity of solar energy system.
2)The plate wing cooling fin of the prominent point of punching press is applied to solar heat-preservation system by the present invention, is solved containing fixed gas The problem of heat exchange efficiency of body is low has greatly saved the energy, overcomes the problem of solar heat-exchange system effectiveness is low, it will be apparent that Improve heat exchange efficiency.
3)On the one hand laminar sublayer can be destroyed, on the other hand compared with " punching " fin, not because heat-transfer surface is lost in punching Product, and " point " and " hole " can disturb fluid on different height respectively, strengthen different thermal resistance links;
4)The aperture that punching press " prominent point " is formed, by the influence of " prominent point " downstream pressure field, it can be achieved that fin media of both sides Pressure and mass exchange, the stability of viscous sublayer and liquid film is damaged, enhanced heat exchange;
5)For the hot water containing on-condensible gas, it can be realized by " prominent point " and expand gas-liquid interface and gas phase boundary With the contact area of cooling wall and enhancing disturbance;
6)By largely testing, it is determined that the structure size of optimal plate-fin heat-dissipating pipe;
7)By designing the distance of adjacent tube wall as H, the length on isosceles triangle base is h, adjacent sloping portion Distance for w, the apex angle of isosceles triangle is b, and the angle of the extending direction of the prominent point and the flow direction of hot water is a etc. Variation of the parameter along fluid flow direction improves heat exchange efficiency or reduces Fluid pressure.
Description of the drawings
Fig. 1 is the structure diagram of solar heat-preservation system of the present invention;
Fig. 2 is the improved structure schematic diagram of solar heat-preservation system of the present invention;
Fig. 3 is the improved structure schematic diagram of solar heat-preservation system of the present invention;
Fig. 4 is the structure diagram in a plate-fin heat-dissipating pipe cross section of the invention;
Fig. 5 is the schematic diagram that the present invention sets prominent sharp structures slope part planar;
Fig. 6 is another schematic diagram that the present invention sets prominent sharp structures slope part planar;
The triangle that Fig. 7 is the present invention is dashed forward sharp structure diagram;
Fig. 8 is the section structure diagram that triangle of the present invention is dashed forward in sharp runner;
The structure diagram that the prominent point of Fig. 9 present invention extends to sloping portion both sides;
Figure 10 is the structure diagram in a plate-fin heat-dissipating pipe cross section of the invention.
Reference numeral is as follows:
1 plate wing cooling fin, 2 fluid passageways, 3 tube walls, 4 sloping portions, 5 horizontal components, 6 prominent points, 7 fins, 8 heat collectors, 9 Circulating pump, 10 hot water storage tanks, 11 seal members.
Specific embodiment
The specific embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.
Herein, if without specified otherwise, it is related to formula, "/" represents division, and "×", " * " represent multiplication.
As shown in Figure 1, a kind of solar heat-preservation system, including heat collector 8, hot water storage tank 10 and heat-dissipating pipe 1, heat-dissipating pipe 1 It is arranged in hot water storage tank 10, the hot water that the heat collector 8 heats transfers heat to storage by heat-dissipating pipe 1 by heat-dissipating pipe 1 Water in boiler 10, the hot water circuit after heat exchange are returned in heat collector 8 and heated.It is preferred that collection is recycled to by circulating pump 9 In hot device 8.
Fig. 2 illustrates the improved embodiment of Fig. 1.As shown in Fig. 2, the heat-dissipating pipe is the multiple of parallel connection.By setting The heat-dissipating pipe of multiple parallel connections is put, heat exchange area can be increased.
Fig. 3 illustrates the improved embodiment of Fig. 1.As shown in figure 3, the heat-dissipating pipe is the multiple of series connection.By setting The heat-dissipating pipe of multiple series connection is put, heat exchange area can be increased.
As shown in figure 4, the heat-dissipating pipe is plate-fin heat-dissipating pipe, the heat-dissipating pipe includes flat tube and is arranged on flat tube In fin 7, the flat tube includes tube wall 3 parallel to each other, fluid passageway 2 is formed between the adjacent tube wall 3, described Fin 7 is set between adjacent tube wall 3.The fin 7 include with 3 inclined sloping portion 4 of tube wall, the sloping portion is mutual It is parallel.Prominent point 6 is processed by impact style on sloping portion 4, so that the fluid of 4 both sides of sloping portion passes through sloping portion The hole formed on 4 by impact style connects;Described prominent sharp 6 extend outwardly from sloping portion 4.
The flat tube can be integrated, and as shown in Figure 10 or by upper and lower tube wall and be arranged on Seal member split composition between upper and lower tube wall, the seal member 11 are arranged on the left and right sides of Fig. 4.
Because sloping portion 4 is parallel to each other, therefore constitutes parallel four side between adjacent sloping portion 4 and upper and lower tube wall Shape passage.
By setting prominent point 6, have the following advantages:
1)On the one hand laminar sublayer can be destroyed, does not lose heat exchange area, and " point " and " hole " can be respectively not With disturbing fluid, enhanced heat exchange in height;
2)Punching press dash forward it is pointed into aperture, by the influence of prominent sharp downstream pressure field, it can be achieved that the pressure of fin media of both sides Power and mass exchange damage the stability of viscous sublayer and liquid film, enhanced heat exchange.
3)For the hot water containing on-condensible gas or two-phase hot water, can be realized by " prominent point " expand gas-liquid interface with And gas phase boundary and the contact area of cooling wall and enhance disturbance.
Above-mentioned measure is taken in plate-fin heat-dissipating pipe, the heat exchange efficiency of hot water can greatly be improved.With it is normal Hot water heat exchange is compared, and can improve the heat exchange efficiency of 15-25%.
Preferably, described prominent sharp 6 angles formed with the flow direction of hot water are acute angle.
Preferably, as shown in figure 4, the fin 7 is apsacline fin, the fin 7 includes horizontal component 5 and inclines Inclined portion point 4, the horizontal component 5 is parallel with tube wall 3 and is sticked together with tube wall 3, the sloping portion 4 and horizontal component 5 Connection.
The flow direction of hot water is from left to right in Fig. 5.But left and right herein simply illustrates flowing of the hot water along prominent point Direction is not offered as actual certain left and right flowing.
As shown in figure 8, the angle of the flow direction of prominent sharp 6 extending direction and hot water is a, as shown in figure 5, along The flow direction of hot water, same sloping portion 4 sets multiple prominent sharp 6, and along the flow direction of hot water, the angle a is got over Come bigger.
It is found through experiments that, by becoming larger for angle a, compared with angle a is identical, can realize higher change The thermal efficiency can about improve 10% or so heat exchange efficiency.
Preferably, the length of prominent sharp 6 extension is L, along the flow direction of hot water, same sloping portion 4 is set Multiple prominent sharp 6 are put, along the flow direction of hot water, the length L is increasing.Be found through experiments that, by length L by Gradual change is big, compared with length L is identical, can realize higher heat exchange efficiency, can about improve 9% or so heat exchange effect Rate.
Preferably, along the flow direction of hot water, the amplitude that length L becomes larger is less and less.It is found through experiments that, length The amplitude to become larger of L is less and less, it is ensured that in the case of heat exchange efficiency, further reduces flow resistance, can about drop Low 5% or so flow resistance.
Preferably, described prominent sharp 6 be isosceles triangle, the base of the isosceles triangle is arranged on sloping portion 4, Preferably, base is identical with the angle of inclination of sloping portion, the apex angle of the isosceles triangle is b, along the flowing of hot water Direction, same sloping portion 4 set multiple prominent sharp 6, along the flow direction of hot water, the situation that length remains unchanged on base Under, the prominent pinnacle angle b is less and less.It is found through experiments that, by tapering into for the pinnacle angle b that dashes forward, with the complete phases of apex angle b Compared with, higher heat exchange efficiency can be realized, can about improve 8% or so heat exchange efficiency.
Preferably, along the flow direction of hot water, the amplitude that apex angle b becomes smaller is less and less.It is found through experiments that, apex angle The amplitude that b becomes smaller is less and less, it is ensured that in the case of heat exchange efficiency, further reduces flow resistance, can about reduce 4% or so flow resistance.
Preferably, described prominent sharp 6 be isosceles triangle, the base of the isosceles triangle is arranged on sloping portion, Preferably, base is identical with the angle of inclination of sloping portion, the base length of the isosceles triangle is h, along hot water Flow direction, same sloping portion 4 sets multiple prominent sharp 6, and along the flow direction of hot water, same sloping portion 4 is set Multiple prominent points, in the case where apex angle remains unchanged, along the flow direction of hot water, the h is increasing.It is sent out by testing It is existing, by becoming larger for h, it compared with h is identical, can realize higher heat exchange efficiency, can about improve 7% or so Heat exchange efficiency.
Preferably, along the flow direction of hot water, the amplitude that h becomes larger is less and less.It is found through experiments that, what h became larger Amplitude is less and less, it is ensured that in the case of heat exchange efficiency, further reduces flow resistance, can about reduce by 5% or so Flow resistance.
Preferably, along the flow direction of fluid, same sloping portion sets multiple rows of prominent sharp 6, as it can be seen in figures 5 and 6, often The distance between prominent point of row is S2, and along the flow direction of hot water, the S2 is increasing.Why so set, main Purpose is becoming larger by S2, realizes in the case where ensureing heat exchange efficiency, further reduces flow resistance.It is sent out by testing Existing, flow resistance reduces by 10% or so.
The S2 is using the base of the prominent point of adjacent row as calculating distance.
Preferably, as shown in fig. 6, multiple rows of prominent sharp 6 be shifted structure.Hot water is to flow from top to bottom in Fig. 6.But herein Up and down simply illustrate flow direction of the hot water along prominent point, be not offered as reality and centainly flow up and down.
It finds in an experiment, the distance of adjacent tube wall 3 cannot be excessive, and crossing conference causes the reduction of heat exchange efficiency, too small meeting Cause flow resistance excessive, similarly, for the base length of isosceles triangle, apex angle, prominent point, fin sloping portion distance with The angle of fluid flow direction all cannot the excessive either too small excessive or too small reduction or flowing that can all cause heat exchange efficiency Resistance becomes larger, therefore distance in adjacent tube wall 3, the base length of isosceles triangle, apex angle, prominent point, fin sloping portion Meet the size relationship of an optimization between the angle of fluid flow direction.
Therefore, the present invention is the thousands of secondary numerical simulations and test data of the heat exchanger by multiple and different sizes, In the case of meeting industrial requirements pressure-bearing(Below 10MPa), in the case where realizing maximum heat exchange amount, the optimal heat exchange that sums up The dimensionally-optimised relation of tube wall.
The distance of adjacent tube wall is H, and the length on isosceles triangle base is h, and the distance of adjacent sloping portion is w, The angle of acute angle between sloping portion and tube wall is c, meets equation below:
c6*h/H=c1*Ln(L*sin(a)/(w*sin(c))+c2,
sin(b/2)=c3+c4*sin(a)-c5*(sin(a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5 are coefficients,
0.24<c1<0.25, 0.68<c2<0.70,0.87<c3<0.88,0.68< c4<0.70,1.14<c5<1.15,
7.0<c6<7.5;
19°<a<71 °, 55 °<b<165°,90°<c<70°;
10mm<w<15mm, 6mm<H<14mm;
0.19<L*sin(a)/w<0.41, 0.29<7*h/H<0.47;
H is with the distance between opposite face of adjacent tube wall, and W is along tube wall with the opposite face of adjacent sloping portion Distance on direction, L be isosceles triangle vertex to base midpoint distance.
Preferably, c1=0.245, c2=0.694,
C3=0.873, c4=0.691, c5=1.1454, c6=7.11.
Preferably, 85 °<c<80°.
Preferably, with the increase of angle c, c6 is less and less.
By the optimal geometric scale of " the prominent point " that goes out of above-mentioned formula, heat exchange efficiency can be improved, while can be real The reinforcing of gas phase boundary different scale internal thermal resistance, avoiding measures mistake are now included only to viscous sublayer or comprising liquid film and extremely Degree, causes unnecessary drag losses.
Preferably, the base of the adjacent prominent point of the same row is all on one wire, the adjacent prominent point of same row Distance is S1, the 3.5 × h<S1<5 × h, wherein S1 be with two neighboring isosceles triangle dash forward point base midpoint away from From.
Preferably, the base of the isosceles triangle of the prominent point of adjacent row is parallel to each other, the vertex of isosceles triangle is on earth The distance at side midpoint is L, and the distance S2 of adjacent row is 4.2*L<S2<7.2*L.Preferably S2=5.3*L
During the base difference of the isosceles triangle of adjacent row, the weighted average on two bases is taken to calculate.
Preferably, the angle of the isosceles triangle of same row is identical with base.I.e. shape is identical, is equal Shape.
For the formula of front, for the different prominent point of front and rear row size, also still it is applicable in.
For the specific dimensional parameters do not mentioned, it is designed according to normal heat exchanger.
Preferably, as shown in figure 9, set multiple prominent sharp 6 on sloping portion, the prominent point is to the not homonymy of sloping portion Extension
Preferably, same sloping portion sets multiple rows of prominent point, an at least row dashes forward, and sharp and other arrange prominent point to rake The extension side divided is different.
Preferably, the adjacent prominent point of often row extends to the not homonymy of sloping portion.
It sets by doing so, fluid can be caused to replace heat exchanging tampering in the passage of sloping portion both sides, further carried High heat exchange efficiency.Compared in the same side, 8% or so can be improved.
Preferably, cascaded structure as shown in Figure 3, the average length L of the prominent point in different plate wing heat-dissipating pipes 1 is not Together.Along the flow direction of hot water, average length L constantly increases.Experiment is found, is set, can be improved about by doing so 10% heat exchange efficiency.
Average length L is the weighted average of all prominent sharp length.
Along the flow direction of hot water, the increased amplitude of average length L is increasing.Experiment is found, is set by doing so, About 12% heat exchange efficiency can be improved.
Preferably, highest length L is 1.2-1.3 times of minimum length L.
Preferably, fin is set outside the heat-dissipating pipe.
Preferably, along the flow direction of hot water, outside fin height constantly increases, and the increased amplitude of height is more next It is bigger.By increasing fin height, so as to increase the heat exchange area of fin.Experiment is found, is set by doing so, with fin height It is identical to compare, about 5% heat exchange efficiency can be improved.
Although the present invention has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology Personnel without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should When being subject to claim limited range.

Claims (7)

1. a kind of solar heat-preservation water tank, including heat-dissipating pipe, the heat-dissipating pipe is arranged in hot water storage tank, and solar thermal collector adds The hot water of heat transfers heat to hot water storage tank by heat-dissipating pipe by heat-dissipating pipe;
The heat-dissipating pipe is plate-fin heat-dissipating pipe, and the plate-fin heat-dissipating pipe includes flat tube and the fin being arranged in flat tube, institute Stating flat tube includes tube wall parallel to each other, and the fin is arranged between tube wall, and the fin includes favouring the inclination of tube wall Part processes prominent point, so that the fluid of sloping portion both sides passes through on sloping portion on sloping portion by impact style The hole connection that impact style is formed;The prominent point extends outwardly from sloping portion along hot water flow direction;It is set on sloping portion Multiple prominent points are put, the prominent point extends to the not homonymy of sloping portion;The prominent point is isosceles triangle.
2. hot water storage tank as described in claim 1, which is characterized in that the multiple rows of prominent point of same sloping portion setting, at least one The prominent point of row is different from the extension side of other rows prominent point to sloping portion.
3. hot water storage tank as claimed in claim 2, which is characterized in that the adjacent prominent point of often row prolongs to the not homonymy of sloping portion It stretches.
4. hot water storage tank as described in claim 1, which is characterized in that the fin includes horizontal component, the horizontal component It is sticked together with tube walls parallel and with tube wall, the sloping portion is connected with horizontal component;The base of the isosceles triangle It is arranged on sloping portion, the distance of adjacent tube wall is H, and the length on isosceles triangle base is h, adjacent sloping portion For distance for w, the apex angle of isosceles triangle is b, and the angle of the extending direction of the prominent point and the flow direction of hot water is a, inclination The angle of acute angle between part and tube wall is c, meets equation below:
c6*h/H=c1*Ln(L*sin(a)/(w*sin(c))+c2,
sin(b/2)=c3+c4*sin(a)-c5*(sin(a))2,
Wherein Ln is logarithmic function, and c1, c2, c3, c4, c5 are coefficients,
0.24<c1<0.25, 0.68<c2<0.70,0.87<c3<0.88,0.68< c4<0.70,1.14<c5<1.15,
7.0<c6<7.5;
19°<a<71 °, 55 °<b<165°,90°<c<70°;
10mm<w<15mm, 6mm<H<14mm;
0.19<L*sin(a)/w<0.41, 0.29<7*h/H<0.47;
H is with the distance between opposite face of adjacent tube wall, and w is along tube wall direction with the opposite face of adjacent sloping portion On distance, L be isosceles triangle vertex to base midpoint distance.
5. a kind of solar water heater includes the hot water storage tank of one of claim 1-4.
CN201610461813.XA 2015-10-29 2015-10-29 The hot water storage tank that a kind of fin extends to different directions Active CN106123373B (en)

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CN110806024B (en) * 2018-08-05 2020-08-28 伟迈云科技股份有限公司 Trough type solar heat collector system with size of stabilizing device
CN110430720B (en) * 2019-07-09 2020-11-06 北京空间飞行器总体设计部 Gravity heat pipe radiator suitable for outdoor base station

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CN101363694A (en) * 2008-08-21 2009-02-11 西安石油大学 Shell-pipe head exchanger by double helix flowing of fluid medium in or out of heat exchange tube
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