CN105928226A - Solar heat storage system - Google Patents
Solar heat storage system Download PDFInfo
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- CN105928226A CN105928226A CN201610275903.XA CN201610275903A CN105928226A CN 105928226 A CN105928226 A CN 105928226A CN 201610275903 A CN201610275903 A CN 201610275903A CN 105928226 A CN105928226 A CN 105928226A
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- hot water
- fin
- sloping portion
- tube
- radiating tube
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/30—Solar heat collectors using working fluids with means for exchanging heat between two or more working fluids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
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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
- F28D1/00—Heat-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
- F28D1/02—Heat-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
- F28D1/04—Heat-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
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/0008—Heat-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
- F28D7/0025—Heat-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
- F28D7/0033—Heat-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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular 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
- F28F1/124—Tubular 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
- F28F13/08—Arrangements 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
- F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
- F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
- F24S2010/751—Special fins
- F24S2010/752—Special fins extending obliquely
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
- F24S2080/03—Arrangements for heat transfer optimization
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/10—Secondary fins, e.g. projections or recesses on main fins
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
Abstract
The invention provides a solar heat storage system. The solar heat storage system comprises a heat collector, a heat storage water tank and cooling pipes. The cooling pipes are arranged in the heat storage water tank. Hot water heated by the heat collector passes through the cooling pipes, and heat is transmitted to the heat storage water tank through the cooling pipes. The solar heat storage system is characterized in that the cooling pipes are plate-fin type cooing pipes; each plate-fin type cooling pipe comprises a flat pipe and a fin arranged in the flat pipe, wherein each flat pipe comprises pipe walls parallel to each other, each fin is arranged between the corresponding pipe walls, each fin comprises inclined parts inclining relative to the pipe walls, protruding tips are machined on the inclined parts in a stamping manner, and therefore fluid on the two sides of each inclined part is communicated through holes formed in the inclined part in a stamping manner; and the protruding tips extend outwards in the hot water flowing direction from the inclined parts. The solar heat storage system solves the problem that a solar heat exchange system is low in efficiency, and the heat exchange efficiency is obviously improved.
Description
Technical field
The invention belongs to field of solar energy, particularly relate to the solar energy system of a kind of accumulation of heat.
Background technology
Along with the high speed development of modern social economy, the mankind are increasing to the demand of the energy.But the traditional energy storage levels such as coal, oil, natural gas constantly reduce, the most in short supply, cause rising steadily of price, the problem of environmental pollution that conventional fossil fuel causes simultaneously is the most serious, these development that the most significantly limit society and the raising of human life quality.Energy problem has become as one of distinct issues of contemporary world.Thus seek the new energy, the most free of contamination clean energy resource has become the focus of present people research.
Solar energy is a kind of inexhaustible clean energy resource, and stock number is huge, and the solar radiant energy total amount that earth surface is received every year is 1 × 1018KW h, for more than 10,000 times of world's year consumption gross energy.Countries in the world the most utilizing as important of new energy development using solar energy, the Chinese government the most clearly proposes actively to develop new forms of energy at Report on the Work of the Government, and wherein the utilization of solar energy is especially in occupation of prominent position.Arriving tellurian energy density little (about a kilowatt every square metre) yet with solar radiation, and be again discontinuous, this brings certain difficulty to large-scale exploitation.Therefore, in order to extensively utilize solar energy, not only to solve technical problem, and must be able to same conventional energy resource economically and compete mutually.
Generally, the water of heat collector heating needs to pass to other fluids by the way of heat exchange, or stores.But the water circulation system of solar thermal collection system is a system closed, recirculated water circulating-heating, but some on-condensible gases can be produced in recirculated water cyclic process, additionally, in the case of sometimes sunray is strong, the water in heat collector can form soda pop hot water, therefore in the case of the water in heating carries out heat exchange, because there is on-condensible gas or because forming soda pop hot water, thus cause the reduction of the coefficient of heat transfer so that solar energy cannot make full use of.
For the problems referred to above, the invention provides a kind of new solar heat-preservation system, thus solve solar water and carry out, with its fluid, the problem that the coefficient of heat transfer in the case of heat exchange is low.
Summary of the invention
The invention provides a kind of new solar energy system, thus solve the technical problem above occurred.
To achieve these goals, technical scheme is as follows:
A kind of solar energy system, including heat collector, hot water storage tank and radiating tube, radiating tube is arranged in hot water storage tank, and the hot water of described heat collector heating, through radiating tube, transfers heat to hot water storage tank by radiating tube；It is characterized in that, described radiating tube is multiple radiating tubes of series connection.
As preferably, described radiating tube is plate-fin radiating tube, described plate-fin radiating tube includes flat tube and the fin being arranged in flat tube, described flat tube includes tube wall parallel to each other, described fin is arranged between tube wall, described fin includes the sloping portion favouring tube wall, by the prominent point of impact style processing on sloping portion, so that the hole that the fluid of sloping portion both sides is formed by impact style on sloping portion connects；Described prominent point stretches out along hot water flow direction from sloping portion.
As preferably, described prominent point is isosceles triangle, and the base of described isosceles triangle is arranged on sloping portion, and the average length L of the different prominent points in plate wing radiating tube is different, and L is the summit distance to midpoint, base of isosceles triangle.
As preferably, along the flow direction of hot water, L constantly increases.
As preferably, along the flow direction of hot water, the amplitude that L increases is increasing.
As preferably, described fin includes that horizontal component, described horizontal component stick together with tube walls parallel and with tube wall, and described sloping portion is connected with horizontal component；Described prominent point is isosceles triangle, the base of described isosceles triangle is arranged on sloping portion, the distance of adjacent tube wall is H, the a length of h on isosceles triangle base, the distance of adjacent sloping portion is w, and the drift angle of isosceles triangle is b, and the bearing of trend of described prominent point is a with the angle of the flow direction of hot water, the angle of the 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 be with the relative face of adjacent tube wall between distance, W is that L is the summit distance to midpoint, base of isosceles triangle along the distance on tube wall direction with the relative face of adjacent sloping portion.
As preferably, c1=0.245, c2=0.694,
C3=0.873, c4=0.691, c5=1.1454, c6=7.11.
As preferably, the bearing of trend of described prominent point is a with the angle of the flow direction of hot water, and same sloping portion arranges multiple prominent point, and along the flow direction of hot water, described angle a is more and more less.
As preferably, same sloping portion arranges multiple prominent point, and multiple prominent points are staggered to stretch out from sloping portion both sides.
As preferably, a length of L that described prominent point extends, same sloping portion arranges multiple prominent point, and along the flow direction of hot water, described length L is more and more less.
As preferably, described prominent point is isosceles triangle, the base of described isosceles triangle is arranged on sloping portion, as preferably, base is identical with the angle of inclination of sloping portion, and the drift angle of described isosceles triangle is b, and same sloping portion arranges multiple prominent point, along the flow direction of hot water, described drift angle b is increasing.
As preferably, described prominent point is isosceles triangle, the base of described isosceles triangle is arranged on sloping portion, as preferably, base is identical with the angle of inclination of sloping portion, and the base of described isosceles triangle is S1, and same sloping portion arranges multiple prominent point, along the flow direction of hot water, described S1 is more and more less.
Compared with prior art, plate type heat exchanger and the heat exchange tube wall thereof of the present invention has the advantage that
1) the described radiating tube of the present invention is the multiple of parallel connection, by arranging the radiating tube of multiple parallel connection, can increase heat exchange area, strengthen the heat storage capacity of solar energy system.
2) the plate wing fin of the prominent point of punching press is applied to solar heat-preservation system by the present invention, solve the problem that the heat exchange efficiency containing on-condensible gas is low, greatly save the energy, overcome the problem that solar heat-exchange system effectiveness is low, it will be apparent that improve heat exchange efficiency.
On the one hand 3) laminar sublayer can be destroyed, on the other hand compared with " punching " fin, not lose heat exchange area because of punching, and " sharp " and " hole " can disturbance fluid on differing heights respectively, strengthen different thermal resistance links；
4) aperture that punching press " prominent point " is formed, by the impact of " prominent point " downstream pressure field, can realize pressure and the mass exchange of fin media of both sides, damage the stability of viscous sublayer and liquid film, enhanced heat exchange；
5) for the hot water containing on-condensible gas, it is possible to realize expanding gas-liquid interface and gas phase boundary and the contact area of cooling wall and strengthening disturbance by " prominent point "；
6) by substantial amounts of experiment, it is determined that the physical dimension of optimal plate-fin radiating tube；
7) distance by the adjacent tube wall of design is H, the a length of h on isosceles triangle base, the distance of adjacent sloping portion is w, the drift angle of isosceles triangle is b, the bearing of trend of described prominent point is the change along fluid flow direction of the parameters such as a with the angle of the flow direction of hot water, improves heat exchange efficiency or reduces fluid pressure.
Accompanying drawing explanation
Fig. 1 is the structural representation 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 one cross section structural representation of plate-fin radiating tube of the present invention；
Fig. 5 is the schematic diagram that the present invention arranges prominent point structures slope part planar；
Fig. 6 is another schematic diagram that the present invention arranges prominent point structures slope part planar；
Fig. 7 is the triangle prominent point structural representation of the present invention；
Fig. 8 is the tangent plane structural representation in triangle of the present invention prominent point runner；
The structural representation that the prominent point of Fig. 9 present invention extends to sloping portion both sides；
Figure 10 is one cross section structural representation of plate-fin radiating tube of the present invention.
Reference is as follows:
1 plate wing fin, 2 fluid passages, 3 tube walls, 4 sloping portions, 5 horizontal components, 6 prominent points, 7 fins, 8 heat collectors, 9 circulating pumps, 10 hot water storage tanks, 11 seal members.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in detail.
Herein, without specified otherwise, relating to formula, "/" represents that division, "×", " * " represent multiplication.
As shown in Figure 1, a kind of solar heat-preservation system, including heat collector 8, hot water storage tank 10 and radiating tube 1, radiating tube 1 is arranged in hot water storage tank 10, the hot water of described heat collector 8 heating is through radiating tube 1, transferring heat to the water in hot water storage tank 10 by radiating tube 1, the hot water circuit after heat exchange returns to heat in heat collector 8.Preferably it is recycled in heat collector 8 by circulating pump 9.
Fig. 2 illustrates the embodiment of the improvement of Fig. 1.As in figure 2 it is shown, described radiating tube is the multiple of parallel connection.By arranging the radiating tube of multiple parallel connection, heat exchange area can be increased.
Fig. 3 illustrates the embodiment of the improvement of Fig. 1.As it is shown on figure 3, described radiating tube is the multiple of series connection.By arranging the radiating tube of multiple series connection, heat exchange area can be increased.
As shown in Figure 4, described radiating tube is plate-fin radiating tube, and described radiating tube includes flat tube and the fin 7 being arranged in flat tube, and described flat tube includes tube wall 3 parallel to each other, form fluid passage 2 between described adjacent tube wall 3, between described adjacent tube wall 3, fin 7 is set.Described fin 7 includes the sloping portion 4 tilted with tube wall 3, and described sloping portion is parallel to each other.By the prominent point 6 of impact style processing on sloping portion 4, so that the fluid of sloping portion 4 both sides is connected by the hole formed by impact style on sloping portion 4；Described prominent sharp 6 stretch out from sloping portion 4.
Described flat tube can be that integration manufactures, as shown in Figure 10, it is also possible to being to consist of upper and lower tube wall and the seal member split being arranged between upper and lower tube wall, described seal member 11 is arranged on the left and right sides of Fig. 4.
Because sloping portion 4 is parallel to each other, between the most adjacent sloping portion 4 and up and down tube wall, constitute parallelogram passage.
By arranging prominent point 6, have the advantage that
On the one hand 1) laminar sublayer can be destroyed, not lose heat exchange area, and " sharp " and " hole " can disturbance fluid on differing heights, enhanced heat exchange respectively；
2) punching press is dashed forward the aperture of pointed one-tenth, by the impact of prominent point downstream pressure field, can realize pressure and the mass exchange of fin media of both sides, damage the stability of viscous sublayer and liquid film, enhanced heat exchange.
3) for the hot water containing on-condensible gas or biphase hot water, it is possible to realize expanding gas-liquid interface and gas phase boundary and the contact area of cooling wall and strengthening disturbance by " prominent point ".
Above-mentioned measure is taked, it is possible to greatly improve the heat exchange efficiency of hot water in plate-fin radiating tube.Compared with normal hot water heat exchange, it is possible to increase the heat exchange efficiency of 15-25%.
As preferably, the angle that the flow direction of described prominent sharp 6 and hot water is formed is acute angle.
As preferably, as shown in Figure 4, described fin 7 is apsacline fin, and described fin 7 includes horizontal component 5 and sloping portion 4, and described horizontal component 5 is parallel with tube wall 3 and sticks together with tube wall 3, and described sloping portion 4 is connected with horizontal component 5.
In Fig. 5, the flow direction of hot water is from left to right.But the simply explanation hot water of left and right herein is along the flow direction of prominent point, is not offered as actual certain left and right flowing.
As shown in Figure 8, the described prominent bearing of trend of sharp 6 is a with the angle of the flow direction of hot water, as it is shown in figure 5, along the flow direction of hot water, same sloping portion 4 arranges multiple prominent sharp 6, along the flow direction of hot water, described angle a is increasing.
Be found through experiments, by becoming larger of angle a, identical with angle a compared with, it is possible to achieve higher heat exchange efficiency, it is possible to about improve the heat exchange efficiency of about 10%.
As preferably, the described prominent sharp 6 a length of L extended, along the flow direction of hot water, same sloping portion 4 arranges multiple prominent sharp 6, and along the flow direction of hot water, described length L is increasing.Be found through experiments, becoming larger by length L, identical with length L compared with, it is possible to achieve higher heat exchange efficiency, it is possible to about improve about 9% heat exchange efficiency.
As preferably, along the flow direction of hot water, the amplitude that length L becomes big is more and more less.Being found through experiments, the amplitude that the change of length L is big is more and more less, it is ensured that in the case of heat exchange efficiency, reduce flow resistance further, it is possible to about reduce the flow resistance of about 5%.
As preferably, described prominent sharp 6 is isosceles triangle, the base of described isosceles triangle is arranged on sloping portion 4, and as preferably, base is identical with the angle of inclination of sloping portion, the drift angle of described isosceles triangle is b, along the flow direction of hot water, same sloping portion 4 arranges multiple prominent sharp 6, along the flow direction of hot water, in the case of length holding in base is constant, described prominent pinnacle angle b is more and more less.Be found through experiments, by tapering into of prominent pinnacle angle b, identical with drift angle b compared with, it is possible to achieve higher heat exchange efficiency, it is possible to about improve the heat exchange efficiency of about 8%.
As preferably, along the flow direction of hot water, the amplitude that drift angle b diminishes is more and more less.Being found through experiments, the amplitude that drift angle b diminishes is more and more less, it is ensured that in the case of heat exchange efficiency, reduces flow resistance further, it is possible to about reduce the flow resistance of about 4%.
As preferably, described prominent sharp 6 is isosceles triangle, and the base of described isosceles triangle is arranged on sloping portion, as preferably, base is identical with the angle of inclination of sloping portion, and a length of h in base of described isosceles triangle, along the flow direction of hot water, same sloping portion 4 arranges multiple prominent sharp 6, along the flow direction of hot water, same sloping portion 4 arranges multiple prominent point, in the case of drift angle holding is constant, along the flow direction of hot water, described h is increasing.Be found through experiments, becoming larger by h, identical with h compared with, it is possible to achieve higher heat exchange efficiency, it is possible to about improve about 7% heat exchange efficiency.
As preferably, along the flow direction of hot water, the amplitude that h becomes big is more and more less.Being found through experiments, the amplitude that h becomes big is more and more less, it is ensured that in the case of heat exchange efficiency, reduce flow resistance further, it is possible to about reduce the flow resistance of about 5%.
As preferably, along the flow direction of fluid, same sloping portion arranges multiple rows of prominent sharp 6, as it can be seen in figures 5 and 6, the distance that often row dashes forward between point is S2, along the flow direction of hot water, described S2 is increasing.Why being arranged such, main purpose is big by the change of S2, it is achieved in the case of ensureing heat exchange efficiency, reduce flow resistance further.Being found through experiments, flow resistance reduces about 10%.
Described S2 is that the base of the prominent point with adjacent row is as computed range.
As preferably, as shown in Figure 6, multiple rows of prominent sharp 6 is shifted structure.In Fig. 6, hot water is to flow from top to bottom.But herein up and down simply explanation hot water along the flow direction of prominent point, be not offered as reality and flow the most up and down.
Find in an experiment, the distance of adjacent tube wall 3 can not be excessive, cross conference and cause the reduction of heat exchange efficiency, too small meeting causes flow resistance excessive, in like manner, base length for isosceles triangle, drift angle, prominent point, the distance of fin sloping portion and the angle of fluid flow direction all can not be excessive or too small, excessive or the too small reduction that all can cause heat exchange efficiency or flow resistance change is big, therefore in the distance of adjacent tube wall 3, the base length of isosceles triangle, drift angle, prominent point, an optimized size relationship is met between fin sloping portion and the angle of fluid flow direction.
Therefore, the present invention is thousands of the numerical simulations by multiple various sizes of heat exchangers and test data, in the case of meeting industrial requirements pressure-bearing (below 10MPa), in the case of realizing maximum heat exchange amount, the dimensionally-optimised relation of the optimal heat exchange tube wall summed up.
The distance of adjacent tube wall is H, a length of h on isosceles triangle base, and the distance of adjacent sloping portion is w, and the angle of the 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 be with the relative face of adjacent tube wall between distance, W is that L is the summit distance to midpoint, base of isosceles triangle along the distance on tube wall direction with the relative face of adjacent sloping portion.
As preferably, c1=0.245, c2=0.694,
C3=0.873, c4=0.691, c5=1.1454, c6=7.11.
As preferably, 85 ° < c < 80 °.
As preferably, along with the increase of angle c, c6 is more and more less.
Optimal geometric scale by " the prominent point " that go out of above-mentioned formula, heat exchange efficiency can be improved, can realize only to viscous sublayer or comprise liquid film and to the strengthening comprising gas phase boundary different scale internal thermal resistance, it is to avoid measure is excessive, causes unnecessary drag losses simultaneously.
As preferably, the most on one wire, the prominent point distance that same row is adjacent is S1, described 3.5 × h < S1 < 5 × h on the base of the adjacent prominent point of described same row, and wherein S1 is the distance at the midpoint with the prominent sharp base of adjacent two isosceles triangles.
As preferably, the base of the isosceles triangle of the prominent point of adjacent row is parallel to each other, and the distance on the summit of isosceles triangle to midpoint, base is L, and distance S2 of adjacent row is 4.2*L < S2 < 7.2*L.It is preferably S2=5.3*L
During the base difference of the isosceles triangle of adjacent row, the weighted mean on two bases are taked to calculate.
As preferably, the angle of the isosceles triangle of same row is identical with base.I.e. shape is identical, for equal shape.
For formula above, for the prominent point that front and rear row size is different, the most still it is suitable for.
For the concrete dimensional parameters do not mentioned, it is designed according to normal heat exchanger.
As preferably, as it is shown in figure 9, arrange multiple prominent sharp 6 on sloping portion, described prominent point extends to the not homonymy of sloping portion
As preferably, same sloping portion arranges multiple rows of prominent point, and the prominent point of at least one row point prominent from other rows is different to the extension side of sloping portion.
As preferably, the adjacent prominent point of often row extends to the not homonymy of sloping portion.
By being arranged such, so that fluid replaces heat exchanging tampering in the passage of sloping portion both sides, improve heat exchange efficiency further.Compared with in the same side, it is possible to increase about 8%.
As preferably, cascaded structure as shown in Figure 3, the average length L of the different prominent points in plate wing radiating tube 1 is different.Along the flow direction of hot water, average length L constantly increases.Experiment finds, by being arranged such, can improve the heat exchange efficiency of about 10%.
Average length L is the weighted mean of all prominent point length.
Along the flow direction of hot water, the amplitude that average length L increases is increasing.Experiment finds, by being arranged such, can improve the heat exchange efficiency of about 12%.
As preferably, the highest length L is 1.2-1.3 times of minimum length L.
As preferably, outside described radiating tube, fin is set.
As preferably, along the flow direction of hot water, outside fin height constantly increases, and the amplitude that height increases is increasing.By increasing fin height, thus increase the heat exchange area of fin.Experiment find, by being arranged such, identical with fin height compared with, the heat exchange efficiency of about 5% can be improved.
Although the present invention discloses as above with preferred embodiment, but the present invention is not limited to this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (4)
1. a solar heat-preservation system, including heat collector, hot water storage tank and radiating tube, radiating tube is arranged in hot water storage tank, and the hot water of described heat collector heating, through radiating tube, transfers heat to hot water storage tank by radiating tube
；It is characterized in that, described radiating tube is plate-fin radiating tube, described plate-fin radiating tube includes flat tube and the fin being arranged in flat tube, described flat tube includes tube wall parallel to each other, described fin is arranged between tube wall, described fin includes the sloping portion favouring tube wall, by the prominent point of impact style processing on sloping portion, so that the hole that the fluid of sloping portion both sides is formed by impact style on sloping portion connects；Described prominent point stretches out along hot water flow direction from sloping portion.
2. solar heat-preservation system as claimed in claim 1, it is characterized in that, described prominent point is isosceles triangle, and the base of described isosceles triangle is arranged on sloping portion, the average length L of the different prominent points in plate wing radiating tube is different, and L is the summit distance to midpoint, base of isosceles triangle.
3. solar heat-preservation system as claimed in claim 2, it is characterised in that along the flow direction of hot water, L constantly increases.
4. solar heat-preservation system as claimed in claim 3, it is characterised in that along the flow direction of hot water, the amplitude that L increases is increasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610275903.XA CN105928226B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510723274.8A CN105202779B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system of radiating tube arranged in series |
| CN201610275903.XA CN105928226B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510723274.8A Division CN105202779B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system of radiating tube arranged in series |
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| Publication Number | Publication Date |
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| CN105928226A true CN105928226A (en) | 2016-09-07 |
| CN105928226B CN105928226B (en) | 2017-03-15 |
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| CN201610461813.XA Active CN106123373B (en) | 2015-10-29 | 2015-10-29 | The hot water storage tank that a kind of fin extends to different directions |
| CN201610462074.6A Active CN106091432B (en) | 2015-10-29 | 2015-10-29 | A kind of solar energy system of inner fin of heat dissipation pipe apex angle variation |
| CN201610275903.XA Expired - Fee Related CN105928226B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system |
| CN201610461814.4A Active CN106091435B (en) | 2015-10-29 | 2015-10-29 | A kind of hot water storage tank of spacing of fin variation |
| CN201510723274.8A Expired - Fee Related CN105202779B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system of radiating tube arranged in series |
| CN201610462075.0A Active CN106091433B (en) | 2015-10-29 | 2015-10-29 | A kind of solar energy system |
| CN201610461812.5A Active CN106091434B (en) | 2015-10-29 | 2015-10-29 | A kind of hot water storage tank of finned length variation |
| CN201610461799.3A Active CN106091410B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation water tank |
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| CN201610461813.XA Active CN106123373B (en) | 2015-10-29 | 2015-10-29 | The hot water storage tank that a kind of fin extends to different directions |
| CN201610462074.6A Active CN106091432B (en) | 2015-10-29 | 2015-10-29 | A kind of solar energy system of inner fin of heat dissipation pipe apex angle variation |
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| CN201610461814.4A Active CN106091435B (en) | 2015-10-29 | 2015-10-29 | A kind of hot water storage tank of spacing of fin variation |
| CN201510723274.8A Expired - Fee Related CN105202779B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation system of radiating tube arranged in series |
| CN201610462075.0A Active CN106091433B (en) | 2015-10-29 | 2015-10-29 | A kind of solar energy system |
| CN201610461812.5A Active CN106091434B (en) | 2015-10-29 | 2015-10-29 | A kind of hot water storage tank of finned length variation |
| CN201610461799.3A Active CN106091410B (en) | 2015-10-29 | 2015-10-29 | A kind of solar heat-preservation water tank |
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| CN110631266B (en) * | 2018-07-07 | 2020-08-18 | 威海文海节能科技有限公司 | Solar water heater with variable distance between condensing end stabilizing devices |
| 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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| US20070012430A1 (en) * | 2005-07-18 | 2007-01-18 | Duke Brian E | Heat exchangers with corrugated heat exchange elements of improved strength |
| CN104075464A (en) * | 2014-07-17 | 2014-10-01 | 杭州金培科技有限公司 | Solar heat collector system with heat storage function |
| CN204142069U (en) * | 2014-10-08 | 2015-02-04 | 贵州晟泰铝业有限公司 | A kind of aluminum heat radiating flat tube |
| CN204460146U (en) * | 2015-01-20 | 2015-07-08 | 李泽明 | A kind of solar heat-preservation steam raising plant |
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| CN2419817Y (en) * | 2000-04-07 | 2001-02-21 | 李江波 | Sun light greenhouse temperature riser |
| CN101182977A (en) * | 2007-12-11 | 2008-05-21 | 华南理工大学 | Inner chiasma spiral exterior three-dimensional diamond-type rib double-side intensify heat transfer pipe |
| 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 |
| CN101532798B (en) * | 2009-03-31 | 2011-12-28 | 华北电力大学 | Reinforced heat transfer element of truncated cylindrical surface wing type vortex generator |
| CN101968332A (en) * | 2010-09-20 | 2011-02-09 | 北京华夏壹泰科技有限公司 | EHT (Extra High Tension) self-cleaning energy-saving environment-friendly device and manufacture method thereof |
| CN103673715A (en) * | 2013-12-19 | 2014-03-26 | 宁夏三新热超导技术有限公司 | Reinforced heat transferring element |
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2015
- 2015-10-29 CN CN201610461813.XA patent/CN106123373B/en active Active
- 2015-10-29 CN CN201610462074.6A patent/CN106091432B/en active Active
- 2015-10-29 CN CN201610275903.XA patent/CN105928226B/en not_active Expired - Fee Related
- 2015-10-29 CN CN201610461814.4A patent/CN106091435B/en active Active
- 2015-10-29 CN CN201510723274.8A patent/CN105202779B/en not_active Expired - Fee Related
- 2015-10-29 CN CN201610462075.0A patent/CN106091433B/en active Active
- 2015-10-29 CN CN201610461812.5A patent/CN106091434B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070012430A1 (en) * | 2005-07-18 | 2007-01-18 | Duke Brian E | Heat exchangers with corrugated heat exchange elements of improved strength |
| CN104075464A (en) * | 2014-07-17 | 2014-10-01 | 杭州金培科技有限公司 | Solar heat collector system with heat storage function |
| CN204142069U (en) * | 2014-10-08 | 2015-02-04 | 贵州晟泰铝业有限公司 | A kind of aluminum heat radiating flat tube |
| CN204460146U (en) * | 2015-01-20 | 2015-07-08 | 李泽明 | A kind of solar heat-preservation steam raising plant |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106123373B (en) | 2018-05-25 |
| CN106091434A (en) | 2016-11-09 |
| CN106091432A (en) | 2016-11-09 |
| CN105928226B (en) | 2017-03-15 |
| CN106091410A (en) | 2016-11-09 |
| CN105202779A (en) | 2015-12-30 |
| CN106091410B (en) | 2018-03-20 |
| CN106091433A (en) | 2016-11-09 |
| CN106091432B (en) | 2018-06-26 |
| CN105202779B (en) | 2016-06-08 |
| CN106091435B (en) | 2018-05-25 |
| CN106123373A (en) | 2016-11-16 |
| CN106091435A (en) | 2016-11-09 |
| CN106091434B (en) | 2018-05-25 |
| CN106091433B (en) | 2018-06-15 |
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