CN109945513A - A kind of trough type solar heat-collector system of balance tube diameter setting - Google Patents
A kind of trough type solar heat-collector system of balance tube diameter setting Download PDFInfo
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- CN109945513A CN109945513A CN201810881615.8A CN201810881615A CN109945513A CN 109945513 A CN109945513 A CN 109945513A CN 201810881615 A CN201810881615 A CN 201810881615A CN 109945513 A CN109945513 A CN 109945513A
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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 present invention provides a kind of groove type solar collecting systems, including heat collector, the heat collector includes thermal-collecting tube and reflecting mirror, and thermal-collecting tube absorbs solar energy, heats the water in thermal-collecting tube, it is characterized in that, the thermal-collecting tube is more of parallel connection, and along the flow direction of thermal-arrest tube fluid, multiple balance tubes are arranged between adjacent thermal-collecting tube, along the flow direction of thermal-arrest tube fluid, the diameter of balance tube is continuously increased.The present invention can guarantee to reach pressure equilibrium as soon as possible in process fluid flow by the setting of adjacent balance tube caliber change.
Description
Technical field
The invention belongs to field of solar energy more particularly to a kind of solar thermal collectors.
Background technique
With the rapid development of modern social economy, the mankind are increasing to the demand of the energy.However coal, petroleum, 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 sun
Can thermal transition be that a kind of energy conversion efficiency and utilization rate are high and low in cost, the solar energy that can be widely popularized in the whole society is sharp
Use mode.In solar energy heat utilization device, it is important to solar radiant energy are converted into thermal energy, realize the device of this conversion
Referred to as solar thermal collector.
In solar thermal collector, thermal-collecting tube type structure is a kind of very common form, is generally comprised in such structure
More parallel thermal-collecting tubes side by side, but can often occur fluid in different thermal-collecting tubes in operation and distribute unevenly, simultaneously
There is also because heating unevenly causes fluid temperature (F.T.) in different thermal-collecting tubes different, so as to cause the pressure in different thermal-collecting tubes
It is different.Longtime running in this case will lead to the big thermal-collecting tube of pressure and damage, thus cause on the whole heat collector without
Method is effectively run.
In addition, thermal-collecting tube, which in heat exchange, absorbs solar energy, forms steam water interface, liquid-vapor mixture, which exists, causes steam mixed
Exchange capability of heat declines between Cheng Yituan, with liquid, greatly affects the efficiency of heat exchange.
Summary of the invention
The present invention aiming at the shortcomings in the prior art, provides a kind of solar thermal collector of Novel structure, while also providing
A kind of thermal-collecting tube of Novel structure, and the thermal-collecting tube have heating rapidly, stability of flow, good effect of heat exchange improves too
Positive energy efficiency of heating- utilization.
To achieve the above object, the present invention adopts the following technical scheme:
A kind of groove type solar collecting system, including heat collector, the heat collector include thermal-collecting tube and reflecting mirror, thermal-collecting tube
Solar energy is absorbed, the water in thermal-collecting tube is heated, which is characterized in that the thermal-collecting tube is more in parallel, along flowing in thermal-collecting tube
Multiple balance tubes are arranged between adjacent thermal-collecting tube, along the flow direction of thermal-arrest tube fluid, balance tube in the flow direction of body
Diameter be continuously increased.
Preferably, the ever-increasing amplitude of the diameter of balance tube is increasingly along the flow direction of thermal-arrest tube fluid
Greatly.
Preferably, stabilising arrangement is arranged in the thermal-collecting tube, the stabilising arrangement is laminated structure, the laminated structure
It is arranged on the cross section of thermal-collecting tube；The stabilising arrangement is square through-hole and octagon through-hole composition, the square
The side length of through-hole is equal to the side length of octagon through-hole, and four of the square through-hole are when being respectively four different positive eight
The side of shape through-hole, four of octagon through-hole apart from one another by while be respectively four different square through-holes while.
Preferably, the cross section of thermal-collecting tube is square.
Preferably, the thermal-collecting tube is in parallel more, the corresponding reflecting mirror in every thermal-collecting tube lower part, the reflection
The end of mirror connects, to form an overall structure.
Preferably, the water of heat collector is transported to heat utilization equipment, the steam utilization equipment is medical fluid heat exchanger, water tank
In water as heat source for heating medical fluid.
Preferably, thermal-collecting tube is welded for multi-segment structure, stabilising arrangement is arranged in the junction of multi-segment structure.
Preferably, the distance between adjacent stable device is M1, the side length of square through-hole is B1, and thermal-collecting tube is pros
Tee section, the side length of thermal-collecting tube square section are B2, meet following require:
M1/B2=a*Ln (B1/B2)+b
Wherein a, b are parameters, wherein 1.739 < a < 1.740,5.00 <b < 5.10；
11<B2<46mm；
1.9<B1<3.2mm；
18<M1<27mm。
20°<A<60°。
Preferably, 30 ° < A < 50 °.
Further preferably, with the increase of B1/B2, a is smaller and smaller, and b is increasing.
Preferably, a=1.7395, b=5.05；
Preferably, with the increase of A, m is smaller and smaller.
Preferably, the water of thermal-collecting tube is transported to heat utilization equipment after heating, the steam utilization equipment is medical fluid
Heat exchanger, the water of heating is as heat source for heating medical fluid.
Preferably, the stabilising arrangement includes at least one of following two type, the first seed type is square
Central stabilizer device, square through-hole are located at the center of thermal-collecting tube, and second of type is octagon central stabilizer device, and positive eight
Side shape through-hole is located at the center of thermal-collecting tube.
Preferably, the stabilising arrangement type being disposed adjacent is different.
Preferably, the multiple stabilising arrangements of setting in thermal-collecting tube, the distance apart from thermal-collecting tube entrance is H, adjacent stable dress
Spacing between setting is S, S=F1(H), meet following require:
S’<0,S”>0。
Preferably, the multiple stabilising arrangements of setting in thermal-collecting tube evaporation ends, the distance apart from thermal-collecting tube entrance is H, is stablized
The side length of the square through-hole of device is D, D=F3(H), meet following require:
D’<0,D”>0。
Preferably, groove is arranged in the collector tube inner wall, the shell of the stabilising arrangement is arranged in groove, described outer
The inner wall of shell and the aligning inner of thermal-collecting tube.
The present invention has the advantage that
1) present invention can guarantee to reach as soon as possible in process fluid flow by the setting of adjacent balance tube caliber change
To pressure equilibrium.
2) stabilization of the Novel structure combined the present invention provides a kind of new-type square through-hole and octagon through-hole
The solar thermal collector of device, by square and octagon, so that the side shape of the square hole and octagon hole that are formed
At angle be all greater than equal to 90 degree so that fluid can sufficiently flow through each position in each hole, avoid or subtract
The short circuit of few fluid flowing.Two-phase fluid is separated into liquid and gas by the stabilising arrangement of Novel structure by the present invention, by liquid
It is mutually divided into small liquid group, gas phase is divided into minute bubbles, inhibits the reflux of liquid phase, promotes gas phase smooth outflow, plays stationary flow
The effect of amount improves heat transfer effect.Stabilising arrangement in compared with the existing technology, further increases steady flow result, augmentation of heat transfer,
And it is simple to manufacture.
3) a kind of solar thermal collector of Novel structure is provided, by the way that balance tube is arranged between thermal-collecting tube, ensure that
Pressure is uniform in each thermal-collecting tube, fluid flow it is evenly distributed and fluid motion resistance evenly distributed.
4) present invention is by being reasonably laid out, so that square and octagon through-hole are evenly distributed, so that whole
On rank street face on fluid segmentation uniformly, avoid the segmentation of ring structure in the prior art circumferentially and unevenly ask
Topic.
5) present invention is uniformly distributed by the interval of square hole and octagon hole, so that macropore and aperture are whole
Body is evenly distributed on cross section, and by the change in location of the macropore of adjacent stabilising arrangement and aperture, so that segregation
More preferably.
6) present invention is laminated structure by setting stabilising arrangement, so that stabilising arrangement structure is simple, cost is reduced.
7) present invention passes through the distance being arranged between adjacent stable device in absorbing pipe short transverse, the hole of stabilising arrangement
Side length, the parameters size such as caliber, the tube spacing of absorbing pipe rule variation, have studied the optimal relationship ruler of above-mentioned parameter
It is very little, to further reach steady flow result, noise is reduced, improves heat transfer effect.
8) present invention is conducted extensive research by heat exchange rule caused by the variation to stabilising arrangement parameters,
In the case of meeting flow resistance, the best relation formula of heat transfer effect is realized.
Detailed description of the invention:
Fig. 1 is the structural schematic diagram of solar energy collector system of the present invention.
Fig. 2 is solar thermal collector schematic cross-section of the present invention.
Fig. 3 is another structural schematic diagram of solar thermal collector of the present invention.
Fig. 4 stabilising arrangement cross-sectional structure schematic diagram of the present invention；
Another cross-sectional structure schematic diagram of Fig. 5 stabilising arrangement of the present invention；
Fig. 6 is stabilising arrangement of the present invention arrangement schematic diagram in thermal-collecting tube；
Fig. 7 is that stabilising arrangement of the present invention arranges cross-sectional view in thermal-collecting tube；
Fig. 8 is the cross-sectional view of thermal-collecting tube setting balance tube of the present invention.
In figure: 1, heat collector, 11, thermal-collecting tube, 12, reflecting mirror, 2 heat utilization equipment, 3 balance tubes, 4 stabilising arrangements, 41 just
Square through hole, 42 octagon through-holes, 43 sides
Specific embodiment
A kind of groove type solar collecting system, as shown in Figs. 1-2, the system comprises heat collector 1, heat utilization device 2, institutes
Stating heat collector 1 includes thermal-collecting tube 11 and reflecting mirror 12, and thermal-collecting tube 11 absorbs solar energy, and the water after heating forms steam water interface,
Or steam exchanges heat in heat utilization device 2 into heat utilization device 2, in heat utilization device 2 exchange heat after water into
Enter in thermal-collecting tube 11 and continues to heat.
Preferably, as shown in Figure 1, the heat collector 1 is series connection hybrid structures in parallel.
Preferably, every 11 lower part of thermal-collecting tube is one corresponding as shown in figure 3, the thermal-collecting tube 11 is in parallel more
Reflecting mirror 12, the end connection of the reflecting mirror 12, to form an overall structure.By above structure, list can be made
Bit space is distributed more thermal-collecting tubes and makes full use of solar energy to save space.
Preferably, as shown in figure 8, being connected between adjacent thermal-collecting tube 11 by balance tube 3.
In the process of running, there are fluid distribution unevenly for heat collector, and because during thermal-arrest, different thermal-arrests
The heat that pipe absorbs is different, causes fluid temperature (F.T.) in different thermal-collecting tubes different, even fluid in some thermal-collecting tubes, for example, water at
For the state of gas-liquid two-phase, some thermal-arrest tube fluids are still liquid, lead to thermal-collecting tube because fluid becomes steam in this way
Interior pressure becomes larger, therefore by the way that balance tube is arranged between thermal-collecting tube, can fluid be flowed mutually in thermal-collecting tube, in this way
So that the pressure distribution in all thermal-collecting tubes reaches balance, fluid distribution can also be promoted to reach balance.
As shown in figure 8, balance tube 3 is arranged between the thermal-collecting tube.Weighing apparatus is set between at least two adjacent thermal-collecting tubes 11
Pressure pipe 3.It finds under study for action, during thermal-collecting tube heat absorption, it may appear that the caloric receptivity of the thermal-collecting tube of different location is different, leads
Cause pressure between thermal-collecting tube 11 or temperature different, it is excessively high to will lead to 11 temperature of part thermal-collecting tube in this way, the lost of life is caused,
Once thermal-collecting tube 11 goes wrong, the problem of entire solar energy system is not available may cause.The present invention passes through a large amount of
Research, in adjacent thermal-collecting tube, balance tube 3 is set, can in the case where thermal-collecting tube is heated different to cause pressure different,
The fluid in thermal-collecting tube 11 that pressure can be made big quickly flows to the small thermal-collecting tube 11 of pressure, to keep integral pressure equal
Weighing apparatus, avoids hot-spot or supercooling.
Preferably, further including the device for pressure measurement for measuring thermal-arrest pipe pressure.The device for pressure measurement is connected to collection
Heat pipe 11 once leaking, is then pressed by the pressure in measurement thermal-collecting tube 11 to check whether thermal-collecting tube 11 leaks
The measurement data of force measuring device will be abnormal, then closes the Fluid valve entered in thermal-collecting tube 11 in time.
Preferably, the heat collector further includes control system and valve, the control system and valve carry out data company
It connects, for the opening and closing of control valve and the size of valve flow.The control system and device for pressure measurement carry out data company
It connects, for detecting the pressure of device for pressure measurement measurement.Once the pressure of the device for pressure measurement of control system detection is lower than pre-
Fixed number value, then show pressure anomaly, it is likely that thermal-collecting tube 11 leaks, and control system control valve is automatically closed at this time, prohibits
Fluid flow enters in thermal-collecting tube.By above-mentioned automatic control function, so that monitoring process realizes automation.
It is connected between the thermal-collecting tube 11 by balance tube 3, preferably, the device for pressure measurement and multiple collection
Any one of heat pipe 11, which is attached, to be ok.
By the way that balance tube 3 is arranged, so that the connection of multiple thermal-collecting tubes 11 is got up, once some thermal-collecting tube leaks, then
Because the reason of connection, device for pressure measurement can also detect pressure anomaly at any time, then Fluid valve closing can be also automatically controlled,
Fluid is avoided to enter in heat exchanger tube.The quantity of device for pressure measurement can be reduced in this way, it is few only by one or quantity
Device for pressure measurement, to realize the pressure detecting of all thermal-collecting tubes.
Preferably, as shown in Figure 1, the fluid first passes through the inlet header of thermal-collecting tube, then by inlet header into
Enter each thermal-collecting tube 11, is flowed out after heating from outlet header.The valve is arranged in fluid and enters on the pipeline of inlet header.
In this way when detecting leakage, automatic-closing valve, then fluid cannot be introduced into inlet header, cannot be introduced into thermal-arrest naturally
Pipe.
Preferably, temperature sensor is arranged in the outlet of every thermal-collecting tube, for measuring the fluid temperature (F.T.) of thermal-collecting tube outlet.
Control system is connected with temperature sensor data, and the heating feelings of each thermal-collecting tube are judged according to the data that temperature sensor detects
Condition.Such as control system can find out the low thermal-collecting tube of outlet temperature, the reason of checked to this, find out problem, convenient for changing
Into.Control system can also be automatically reminded to, that thermal-collecting tube outlet temperature is lower than normal value.It is the invention of the application herein
Point, non-common knowledge.
Preferably, multiple weighing apparatus pressures are arranged between adjacent thermal-collecting tube 11 along the flow direction of fluid in thermal-collecting tube 11
Pipe 3.By the way that multiple balance tubes are arranged, fluid continuous counterpressure in heat absorption evaporation process is enabled to, guarantees entire collection
Pressure in heat pipe is balanced.
Preferably, the distance between adjacent balance tube 3 constantly reduces along the flow direction of fluid in thermal-collecting tube 11.
This purpose is in order to which more balance tubes are arranged, because of flowing up with fluid, fluid constantly absorbs heat, not with fluid
Disconnected heat absorption, the pressure in different thermal-collecting tubes is more and more uneven, therefore by above-mentioned setting, can guarantee to flow in fluid
Reach pressure equilibrium in journey as soon as possible.
Preferably, along the flow direction of fluid in thermal-collecting tube 11, the distance between adjacent balance tube is ever-reduced
Amplitude is increasing.It is found through experiments that, above-mentioned setting, can guarantee more excellent in process fluid flow to reach pressure faster
It is balanced.This is also the optimal mode of communicating got and largely studying pressure changes in distribution rule.
Preferably, along the flow direction of fluid in thermal-collecting tube 11, the diameter of balance tube 3 is continuously increased.This purpose is
Guarantee bigger connection area to be arranged, because of flowing up with fluid, fluid, which constantly absorbs heat, generates steam, with
The continuous bad student of steam, the temperature, pressure in different thermal-collecting tubes is more and more uneven, therefore by above-mentioned setting, can guarantee
Reach pressure equilibrium in process fluid flow as soon as possible.
Preferably, along the flow direction of fluid in thermal-collecting tube 11, the ever-increasing amplitude of the diameter of balance tube 3 is more next
It is bigger.Be found through experiments that, above-mentioned setting, can guarantee in process fluid flow it is more excellent faster reach pressure equilibrium.This
And the optimal mode of communicating got and largely studying pressure changes in distribution rule.
Because solar energy is absorbed, so that stream-liquid two-phase flow occurs in thermal-collecting tube, so that the stream in thermal-collecting tube in thermal-collecting tube
Body is liquid-vapor mixture.Therefore this invention takes new structures, to divide liquid and vapor capacity, so that heat exchange is reinforced.
Stabilising arrangement 4 is set in thermal-collecting tube, and the structure of the stabilising arrangement 4 is as shown in Figure 4,5.The stabilising arrangement 4 is
Laminated structure, the laminated structure are arranged on the cross section of thermal-collecting tube 11；The stabilising arrangement 4 is square and octagon
Structure composition, to form square through-hole 41 and octagon through-hole 42.The side length of square through-hole 41 as described in Figure 4 is equal to
The side length of octagon through-hole 42, four of the square through-hole while 43 be respectively four different octagon through-holes while
43, positive eight deformation four of through-hole apart from one another by while 43 be respectively four different square through-holes while 43.
The present invention uses the stabilising arrangement of Novel structure, has the advantages that
1) stabilization of the Novel structure combined the present invention provides a kind of new-type square through-hole and octagon through-hole
Device, by square and octagon, so that the angle that the side of the square hole and octagon hole that are formed is formed all is big
In being equal to 90 degree, so that fluid can sufficiently flow through each position in each hole, the short of fluid flowing is avoided or reduced
Road.Two-phase fluid is separated into liquid and gas by the stabilising arrangement of Novel structure by the present invention, and liquid phase is divided into small liquid group,
Gas phase is divided into minute bubbles, inhibits the reflux of liquid phase, promotes gas phase smooth outflow, plays the role of regime flow, has and subtracts
The effect of vibration noise reduction, improves heat transfer effect.Stabilising arrangement in compared with the existing technology further increases steady flow result, strengthens
Heat transfer, and be simple to manufacture.
2) present invention is by being reasonably laid out, so that square and octagon through-hole are evenly distributed, so that whole
On rank street face on fluid segmentation uniformly, avoid the segmentation of ring structure in the prior art circumferentially and unevenly ask
Topic.
3) present invention is uniformly distributed by the interval of square hole and octagon through-hole, so that macropore and aperture exist
It is evenly distributed on whole cross section, and by the change in location of the macropore of adjacent stabilising arrangement and aperture, so that separating effect
Fruit is more preferable.
4) present invention is laminated structure by setting stabilising arrangement, so that stabilising arrangement structure is simple, cost is reduced.
The present invention by setting square hole and octagon stabilising arrangement, be equivalent to change in thermal-collecting tube increase in change
Heat area enhances heat exchange, improves heat transfer effect.
The present invention is because gas-liquid two-phase is divided in all cross-section locations for changing thermal-collecting tube, thus entirely changing
The segmentation of gas-liquid interface and gas phase boundary and the contact area of cooling wall are realized on thermal-arrest tube section and enhances disturbance, greatly
Big reduces noise and vibration, enhances heat transfer.
Preferably, the stabilising arrangement includes two types, such as Fig. 4, shown in 5, the first seed type is square center
Stabilising arrangement, square are located at the center of thermal-collecting tube or condenser pipe, as shown in Figure 6.Second is octagon central stabilizer
Device, octagon are located at the center of thermal-collecting tube, as shown in Figure 4.Preferably as one, the stabilising arrangement phase of above two type
Neighbour's setting, that is, the stabilising arrangement type being disposed adjacent are different.I.e. adjacent with square center stabilising arrangement is in octagon
Heart stabilising arrangement, adjacent with octagon central stabilizer device is square center stabilising arrangement.The present invention passes through square
The interval in hole and octagon hole is uniformly distributed, so that macropore and aperture are evenly distributed on whole cross section, Er Qietong
The macropore of adjacent stabilising arrangement and the change in location of aperture are crossed, so that passing through by the fluid of macropore followed by aperture
The fluid of aperture separates followed by macropore, further progress, promotes the mixing of vapour-liquid, so that separating with heat transfer effect more
It is good.
Preferably, the cross section of the thermal-collecting tube 11 is square.
Preferably, the multiple stabilising arrangements of setting in thermal-collecting tube stablize dress along the flow direction of fluid in thermal-collecting tube 11
Spacing between setting constantly becomes smaller.If the distance of the entrance apart from thermal-collecting tube is H, the spacing between adjacent stable device is S, S
=F1(H), i.e. S is using height H as the function of variable, and S ' is the first order derivative of S, meets following require:
S'<0；
Main cause is because thermal-arrest liquid in pipe is constantly heated to generate steam, and in uphill process, steam is constantly got over
Come more, causes the steam in biphase gas and liquid flow more and more, because the vapour phase in stream-liquid two-phase flow is more and more, in thermal-collecting tube
Exchange capability of heat can increase with vapour phase and it is opposite weaken, vibration and its noise also can constantly increase as vapour phase increases.
Therefore the distance between the adjacent stable device for needing to be arranged is shorter and shorter.
It is found through experiments that, by above-mentioned setting, can both reduce vibration and noise to the full extent, while can mention
High heat transfer effect.
Further preferably along the flow direction of fluid in thermal-collecting tube 11, the distance between adjacent stable device is shorter and shorter
Amplitude be continuously increased.That is S " is the second derivative of S, meets following require:
S">0；
It is found through experiments that, by being improved simultaneously so set, 7% or so vibration and noise can be further decreased
8% or so heat transfer effect.
Preferably, along the flow direction of fluid in thermal-collecting tube 11, square side length is smaller and smaller.Apart from thermal-arrest
The distance of the lower end of pipe is H, and square side length is C, C=F2(H), C ' is the first order derivative of C, meets following require:
C'<0；
Further preferably, along the flow direction of fluid in thermal-collecting tube 11, the smaller and smaller amplitude of square side length is not
Disconnected increase.C " is the second derivative of C, meets following require:
C”>0。
Specific reason changes referring to front stabilising arrangement spacing.
Preferably, the distance between adjacent stable device remains unchanged.
Preferably, gap is arranged in the collector tube inner wall, the outer end of the stabilising arrangement is arranged in gap.
Preferably, thermal-collecting tube is welded for multi-segment structure, stabilising arrangement is arranged in the junction of multi-segment structure.
It is learnt by analyzing and testing, the spacing between stabilising arrangement cannot be excessive, leads to damping noise reduction if excessive
And the effect separated is bad, and while it can not be too small, cause resistance excessive if too small, similarly, square side length is not yet
Can be too large or too small, the effect for also resulting in damping noise reduction is bad or resistance is excessive, therefore the present invention pass through it is a large amount of real
Test, preferentially meet normal flow resistance (total pressure-bearing be 2.5Mpa hereinafter, single thermal-collecting tube on-way resistance be less than etc.
In 5Pa/M) in the case where, so that being optimal of damping noise reduction, has arranged the optimal relationship of parameters.
Preferably, the distance between adjacent stable device is M1, the side length of square through-hole is B1, and thermal-collecting tube is pros
Tee section, the side length of thermal-collecting tube square section are B2, meet following require:
M1/B2=a*Ln (B1/B2)+b
Wherein a, b are parameters, wherein 1.739 < a < 1.740,5.00 <b < 5.10；
11<B2<46mm；
1.9<B1<3.2mm；
18<M1<27mm。
20°<A<60°。
Preferably, 30 ° < A < 50 °.
Further preferably, with the increase of B1/B2, a is smaller and smaller, and b is increasing.
Preferably, a=1.7395, b=5.05；
Preferably, the side length B1 of square through-hole is the average value of side length and outer side length in square through-hole, thermal-collecting tube
The side length B2 of square section is the average value of side length and outer side length in thermal-collecting tube.
Preferably, the outer side length of square through-hole is equal to the interior side length of thermal-collecting tube square section.
In practical application, thermal-collecting tube is generally tilted with horizontal plane, and the application carries out the heat exchange situation under inclination conditions
Research.Preferably, the distance between adjacent stable device is M1, the side length of square through-hole is B1, and thermal-collecting tube is square
Section, the side length of thermal-collecting tube square section are B2, and it is A that the thermal-collecting tube and horizontal plane, which form acute angle, meet following require:
C*M1/B2=a*Ln (B1/B2)+b
Wherein a, b are parameters, wherein 1.739 < a < 1.740,5.00 <b < 5.10；C=1/cos (A)m, wherein 0.085 < m <
0.095, preferably m=0.090.
11<B2<46mm；
1.9<B1<3.2mm；
18<M1<27mm。
20°<A<60°。
Preferably, 30 ° < A < 50 °.
Further preferably, with the increase of B1/B2, a is smaller and smaller, and b is increasing.
Preferably, the side length B1 of square through-hole is the average value of side length and outer side length in square through-hole, thermal-collecting tube
The side length B2 of square section is the average value of side length and outer side length in thermal-collecting tube.
Preferably, the outer side length of square through-hole is equal to the interior side length of thermal-collecting tube square section.
With the increase of A, m is smaller and smaller.
Preferably, with the increase of B2, B1 is also continuously increased.But with the increase of B2, the ever-increasing amplitude of B1
It is smaller and smaller.This rule variation is obtained by a large amount of numerical simulation and experiment, and the variation of above-mentioned rule, Neng Goujin are passed through
One step improves heat transfer effect, reduces noise.
Preferably, with the increase of B2, M1 constantly reduces.But with the increase of B2, the ever-reduced amplitude of M1 is got over
Come smaller.This rule variation is obtained by a large amount of numerical simulation and experiment, can be into one by the variation of above-mentioned rule
Step improves heat transfer effect, reduces noise.
It is learnt by analyzing and testing, the spacing of thermal-collecting tube will also meet certain requirements, such as cannot excessive or mistake
It is small, no matter it is too large or too small all heat transfer effect can be caused bad, and because the application thermal-collecting tube in be provided with stabilising arrangement,
Therefore stabilising arrangement also there are certain requirements thermal-arrest tube spacing.Therefore the present invention through a large number of experiments, meets normally preferential
Flow resistance (total pressure-bearing be 2.5Mpa hereinafter, single thermal-collecting tube on-way resistance be less than or equal to 5Pa/M) in the case where,
So that being optimal of damping noise reduction, has arranged the optimal relationship of parameters.
The distance between adjacent stable device is M1, and square side length is B1, and thermal-collecting tube is square section, thermal-collecting tube
Side length be B2, the spacing between adjacent thermal-collecting tube center is that M2 meets following require:
M2/B2=d* (M1/B2)2+e-f*(M1/B2)3-h*(M1/B2)；
Wherein d, e, f, h are parameters,
1.239<d<1.240,1.544<e<1.545,0.37<f<0.38,0.991<h<0.992；11<B2<46mm；
1.9<B1<3.2mm；
18<M1<27mm。
16<M2<76mm。
Spacing between adjacent thermal-collecting tube center is that M2 refers to the distance between thermal-arrest tube hub line.
With the increase of A, n is smaller and smaller.
20°<A<60°。
Preferably, 30 ° < A < 50 °.
Further preferably, d=1.2393, e=1.5445, f=0.3722, h=0.9912；
Preferably, d, e, f is increasing with the increase of M1/B2, h is smaller and smaller.
In practical application, thermal-collecting tube is generally tilted with horizontal plane, and the application carries out the heat exchange situation under inclination conditions
Research.The distance between adjacent stable device is M1, and square side length is B1, and thermal-collecting tube is square section, thermal-collecting tube
Side length is B2, and the thermal-collecting tube and horizontal plane form acute angle as A, and the spacing between adjacent thermal-collecting tube center is that M2 satisfaction is wanted as follows
It asks:
C*M2/B2=d* (M1/B2)2+e-f*(M1/B2)3-h*(M1/B2)；
Wherein d, e, f, h are parameters,
1.239<d<1.240,1.544<e<1.545,0.37<f<0.38,0.991<h<0.992；C=1/cos (A)n,
In 0.090 < n < 0.098, preferably n=0.093.
11<B2<46mm；
1.9<B1<3.2mm；
18<M1<27mm。
16<M2<76mm。
Spacing between adjacent thermal-collecting tube center is that M2 refers to the distance between thermal-arrest tube hub line.
With the increase of A, n is smaller and smaller.
20°<A<60°。
Preferably, 30 ° < A < 50 °.
Further preferably, d=1.2393, e=1.5445, f=0.3722, h=0.9912；
Preferably, d, e, f is increasing with the increase of M1/B2, h is smaller and smaller.
Preferably, M2 is continuously increased with the increase of B2, but with the increase of B2, the ever-increasing amplitude of M2 is got over
Come smaller.This rule variation is obtained by a large amount of numerical simulation and experiment, can be into one by the variation of above-mentioned rule
Step improves heat transfer effect.
Preferably, thermal-arrest length of tube is between 2000-2800mm.Further preferably, between 2200-2400mm.
By the preferred of the optimal geometric scale of above-mentioned formula, can be realized under the conditions of meeting normal flow resistance,
Damping noise reduction reaches optimum efficiency.
For parameters such as other parameters, such as tube wall, shell wall thickness according to normal standard setting.
Preferably, the heat exchanger 2 is medical fluid heat exchanger, thermal-collecting tube is protruded into the medical fluid of cabinet, for heating medicine
Liquid.
Preferably, the heat exchanger 2 is health care product heat exchanger, thermal-collecting tube is protruded into the health care product of cabinet, for adding
Hot health care product.
Although the present invention has been disclosed in the preferred embodiments as above, present invention is not limited to this.Any art technology
Personnel can make various changes or modifications, therefore protection scope of the present invention is answered without departing from the spirit and scope of the present invention
When being defined by the scope defined by the claims..
Claims (7)
1. a kind of groove type solar collecting system, including heat collector, the heat collector includes thermal-collecting tube and reflecting mirror, and thermal-collecting tube is inhaled
Solar energy is received, the water in thermal-collecting tube is heated, which is characterized in that the thermal-collecting tube is more of parallel connection, along thermal-arrest tube fluid
Flow direction, multiple balance tubes are set between adjacent thermal-collecting tube, along the flow direction of thermal-arrest tube fluid, balance tube
Diameter is continuously increased.
2. solar thermal collection system as described in claim 1, which is characterized in that along the flow direction of thermal-arrest tube fluid,
The ever-increasing amplitude of the diameter of balance tube is increasing.
3. solar thermal collection system as described in claim 1, which is characterized in that stabilising arrangement, institute are arranged in the thermal-collecting tube
Stating stabilising arrangement is laminated structure, and the laminated structure is arranged on the cross section of thermal-collecting tube；The stabilising arrangement is square
Through-hole and octagon through-hole composition, the side length of the square through-hole are equal to the side length of octagon through-hole, the square
Four of through-hole while be respectively four different octagon through-holes while, four of octagon through-hole apart from one another by side point
It is not the side of four different square through-holes.
4. solar energy collector system as claimed in claim 3, which is characterized in that the cross section of thermal-collecting tube is square.
5. solar energy collector system as claimed in claim 3, the thermal-collecting tube is more of parallel connection, every thermal-collecting tube lower part
A corresponding reflecting mirror, the end connection of the reflecting mirror, to form an overall structure.
6. solar energy collector system as claimed in claim 3, which is characterized in that the water of heat collector is transported to heat utilization and sets
Standby, the steam utilization equipment is medical fluid heat exchanger, and the water in water tank is as heat source for heating medical fluid.
7. solar energy collector system as described in claim 1, which is characterized in that the outlet setting temperature of every thermal-collecting tube passes
Sensor, for measuring the fluid temperature (F.T.) of thermal-collecting tube outlet.Control system is connected with temperature sensor data, according to temperature sensor
The data of detection judge the heating state of each thermal-collecting tube.
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| CN201810881615.8A CN109945513B (en) | 2018-08-05 | 2018-08-05 | Trough type solar heat collection system for heating liquid medicine |
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| CN201810881615.8A CN109945513B (en) | 2018-08-05 | 2018-08-05 | Trough type solar heat collection system for heating liquid medicine |
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