CN105241094B - Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector - Google Patents
Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector Download PDFInfo
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- CN105241094B CN105241094B CN201510615573.XA CN201510615573A CN105241094B CN 105241094 B CN105241094 B CN 105241094B CN 201510615573 A CN201510615573 A CN 201510615573A CN 105241094 B CN105241094 B CN 105241094B
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- cavity
- slide head
- cuplike
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- cuplike cavity
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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
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- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention discloses a solar autoexcitation oscillation enhancing heat exchanging device. The solar autoexcitation oscillation enhancing heat exchanging device is characterized by comprising a cuppy cavity with an opening formed in one end; a sliding head is arranged in the cuppy cavity; the sliding head is in water-stop with the cuppy cavity; a low-thermal capacity liquid heat-conducting medium and an air bag are contained in one side of the sliding head of the cuppy cavity; elastic clamping pillars and a spring are arranged in the other side of the sliding head of the cuppy cavity, and the elastic clamping pillars and the spring are matched with the sliding head; the spring is ejected between the sliding head and an opening part of the cuppy cavity. The invention further discloses a solar thermal collector. The solar thermal collector comprises row tubes and a lower collecting tube communicated with the row tubes. The solar thermal collector is characterized in that the autoexcitation oscillation enhancing heat exchanging device is arranged on the lower portion of each row tube and is located on the lower collecting tube.
Description
Technical field
The present invention relates to a kind of self-excited oscillation reinforced heat exchanger, the reinforcing for relating generally to flat-plate solar collector is changed
Heat.
Background technology
It is well known that solar water heater is the device that water is heated to from low temperature high-temperature using the energy of the sun,
It is widely used, mainly has solar vacuum-tube water heater and flat plate solar water heater at present, in China, vacuum tube type solar energy
Water heater has obtained large-scale application.In recent years, with the requirement of Urbanization Progress and architecture-integral, flat solar
Hydrophone has obtained the development advanced by leaps and bounds, and is whole system as of paramount importance flat plate collector in flat plate solar water heater
The significant components of system, its performance directly determine the heat absorption capacity of system.
Current flat plate solar water heater is broadly divided into two kinds of Natural Circulation and forced circulation, wherein Natural Circulation flat board
Solar water heater is using more.Forced circulation system is driven the medium circulation stream in whole system by pump according to temperature requirement
Dynamic, its heat transfer effect is preferable and controllable, and natural cycle system is self-driven using thermosiphon principle, and its heat transfer effect is weaker than pressure
Blood circulation, therefore develop a kind of device that can strengthen natural cycle system heat transfer effect for raising Natural Circulation flat board too
The efficiency of positive energy water heater is most important.
Based on above reason, the present invention has self-excitation of being heated by installing a device, the device in flat plate collector
The function of encouraging, strengthens the disturbance of medium in heat collector passage by the excitation of this device, and then strengthens its exchange capability of heat.
The content of the invention
The present invention designs a kind of device for flat-plate solar collector, for the heat exchange efficiency of strengthening system.
The present invention provides a kind of solar energy self-excited oscillation reinforced heat exchanger, it is characterized in that it includes one end open
Cuplike cavity, is provided with slide head in cuplike cavity, water-stop between slide head and cuplike cavity；It is located in cuplike cavity and slides
First side is moved built with low heat capacity liquid thermal conductivity media and air bag；It is provided with and cunning positioned at slide head opposite side in cuplike cavity
Elastic card column and spring that dynamic head coordinates, spring are held between slide head and cuplike cavity peristome.
The concrete feature of this programme also has, and the cuplike cavity is metallic cavity；
Cuplike cavity external diameter is 0.25-0.5, air bag volume and cuplike cavity with the ratio of the comb internal diameter of solar thermal collector
The ratio of cavity volume is 0.2-0.5.
The air bag is made up of polymeric material；Inside air bag is sealed with compressed gas；Gaseous species are nitrogen or argon
Deng noble gases.
The slide head is metal material.
The embedded cuplike cavity inwall of the elastic card column, elastic card column are uniform 3-5 along cuplike cavity inwall circumferencial direction,
It is flexible, in the range of the certain pressure can limit slippage head, elastic card column is typically along the uniform 3-5 of cuplike cavity inwall circumferencial direction
It is individual.
Cuplike cavity peristome is provided with the in-flanges of fixed spring, limited spring is ejected, and spring has limit slippage
The effect of head.
The present invention also provides a kind of solar thermal collector, and the lower collector pipe that it is included comb and is connected with comb is characterized in that
Self-excited oscillation reinforced heat exchanger is provided with every comb bottom and above lower collector pipe, and self-excited oscillation reinforcing is changed
Thermal includes the cuplike cavity of one end open, is provided with slide head in cuplike cavity, watertight between slide head and cuplike cavity
Envelope；Slide head side is located in cuplike cavity built with low heat capacity liquid thermal conductivity media and air bag；It is located in cuplike cavity
Slide head opposite side is provided with the elastic card column and spring coordinated with slide head, and spring is held in slide head and cuplike cavity opening
Between portion.
Heat-conducting medium in heat collector is usually ethylene glycol or aqueous solution of propylene glycol, fills around cuplike cavity inner chamber air bag
Dress heat-conducting medium is then ethylene glycol or Propylene Glycol.
In the present invention, the self-excited oscillation reinforced heat exchanger outer wall is inhaled with flat-plate solar collector comb inwall
Hot face welding, device cavity hatch direction are axially consistent with comb upwards, as shown in Fig. 2 the self-excited oscillation enhanced heat exchange
Device is placed in the bottom of flat-plate solar collector comb, the top of lower collector pipe.When solar irradiation is mapped to heat collector surface
When, the heat-conducting medium heating temperature in the autoexcitation reinforced heat exchanger of comb inwall and comb is raised, subsequent cup-shaped
Cavity is also raised with the low heat capacity liquid thermal conductivity media temperature in air bag crack, and then the self-excited oscillation reinforced heat exchanger
Air-inflated pressure increase in the air bag of enclosed inside, with the rising of temperature when pressure reaches certain height air bag with
And low heat capacity liquid thermal conductivity media promotes the slide head to break through elastic card column, elastic card column is pushed into cavity inner wall, slide head
The top of the self-excited oscillation reinforced heat exchanger is slided to rapidly, the slide head promotes the heat-conducting medium of comb bottom rapid
Disturbed along comb upwards, under the dual function that this disturbance and medium are reduced by heat density, the heat-conducting medium in comb leaves
Comb bottom up flows, and flows through upper header along the chuck that media outlet tube runs enter eventually into water tank, into water tank
High temperature heat conducting medium transfer heat to cold water in water tank temperature and reduce, under the heat-conducting medium density increase after cooling
Heavy, the media outlet on water tank flow back into heat collector, returns to the self-excited oscillation of comb bottom through the lower collector pipe of heat collector
The position of reinforced heat exchanger, these cryogenic medias cool down the self-excited oscillation reinforced heat exchanger so that the gas in air bag
Body is returned to initial state by cold events, so completes a circulation.In this cyclic process, the self-excited oscillation is strong
Change the perturbation action that heat-exchanger rig produces a reciprocation cycle to the heat-conducting medium in whole solar water heater system, increase
Strong its heat transfer effect.
Beneficial effects of the present invention can learn according to the narration to such scheme that it is that one kind can pass through self-excited oscillation
The device disturbed to heat-conducting medium in solar thermal collector, further enhances the heat exchange effect of heat-conducting medium by this disturbance
Really, the advantage of this programme is as follows：（1）The self-excited oscillation device is directly driven by photo-thermal without the need for power.（2）It is described from
Excited oscillation device volume is little, lightweight, easy to install, will not produce other impacts to system.（3）The autoexcitation
Oscillation device produces the wave of oscillation, and the wave of oscillation can bring constantly disturbance, the disturbance energy of heat-conducting medium to the heat-conducting medium in system
Medium and the coefficient of heat transfer in the runner of place are improved enough.（4）The self-excited oscillation device causes whole solar water heating system
Shorter to the response time of solar radiation, the system more merely by heat transfer free convection is hot faster.
Description of the drawings
Below in conjunction with the accompanying drawings the present invention is described in further detail.
Fig. 1 self-excited oscillation reinforced heat exchanger structural representations；Fig. 2 self-excited oscillation reinforced heat exchangers are worked
Journey schematic diagram.
In figure, 1- cuplike cavities；2- air bags；3- slide heads；4- elasticity card columns；5- springs；6- low heat capacities liquid thermal conductivity is situated between
Matter；7- nitrogen；8- self-excited oscillation reinforced heat exchangers；9- combs；10- upper headers；11- lower collector pipes；12- heat-conducting mediums；13-
Water tank medium inlet；14- water tank media outlets；15- water tanks；16- water；17- heat collectors.
Specific embodiment
Embodiment 1：As shown in figure 1, a kind of solar energy self-excited oscillation reinforced heat exchanger, it includes one end open
Cuplike cavity 1, is provided with slide head 3, water-stop between slide head 3 and cuplike cavity 1 in cuplike cavity 1；In cuplike cavity 1
Positioned at 3 side of slide head built with low heat capacity liquid thermal conductivity media 6 and air bag 2；It is another that slide head 3 is located in cuplike cavity 1
Side is provided with the elastic card column 4 and spring 5 coordinated with slide head 3, spring 5 hold slide head 3 and 1 peristome of cuplike cavity it
Between.
The cuplike cavity 1 is metallic cavity；1 external diameter of cuplike cavity with the ratio of 9 internal diameter of comb of solar energy heat collection pipe is
0.25-0.5,2 volume of air bag are 0.2-0.5 with the ratio of 1 cavity volume of cuplike cavity.
The air bag 2 is made up of polymeric material；2 inner sealing gas of air bag；Gas pressure is normal pressure；Gaseous species are nitrogen
The noble gases such as gas or argon.
The slide head 3 is metal material；The elastic card column 4 is embedded in 1 inwall of cuplike cavity, and elastic card column 4 is along cup-shaped
1 inwall circumferencial direction of cavity is uniform 3-5, flexible, can limit slippage 3 in the range of certain pressure；Open in cuplike cavity 1
Oral area is provided with the in-flanges of fixed spring 5, and limited spring 5 is ejected, and spring 5 has the effect of limit slippage 3.
Embodiment 2：The present embodiment part same as Example 1 is repeated no more, and difference is, as shown in Fig. 2 this
It is bright that a kind of solar thermal collector is also provided, the lower collector pipe 11 that it is included comb 9 and is connected with comb 9, in 9 bottom of every comb and
The top of lower collector pipe 11 is provided with self-excited oscillation reinforced heat exchanger 8, self-excited oscillation reinforced heat exchanger 8 includes one
The cuplike cavity 1 of end opening, is provided with slide head 3, water-stop between slide head 3 and cuplike cavity 1 in cuplike cavity 1；In cup
3 side of slide head is located in shape cavity 1 built with low heat capacity liquid thermal conductivity media 6 and air bag 2；It is located in cuplike cavity 1 and slides
Dynamic 3 opposite side are provided with the elastic card column 4 and spring 5 coordinated with slide head 3, and spring 5 is held in slide head 3 and cuplike cavity
Between 1 peristome.
Heat-conducting medium in heat collector is usually ethylene glycol or aqueous solution of propylene glycol, the low heat capacity liquid of cuplike cavity inner chamber
Body heat-conducting medium is then ethylene glycol or Propylene Glycol.
So that, shown in Fig. 2, solar energy is irradiated on heat collector, self-excited oscillation reinforced heat exchanger 8 is heated, autoexcitation
Vibration reinforced heat exchanger 8 in 2 expanded by heating of air bag, with continue heating, air bag 2 expansion produce pressure reach can gram
When clothing put the power of elastic card column 4, elastic card column 4 gradually can be advanced cavity inner wall by slide head 3, now 3 meeting of slide head
Break through elastic card column 4 to move up, promotion will be limited by the spring 5 in device to a certain extent, and the mobile of slide head 3 can make
Obtain, shock wave can strengthen the disturbance of heat-conducting medium, the heat-conducting medium in each comb 9
Upper header 10 is entered after being heated, water tank medium inlet 13 is entered along upper header 10, and the thermal medium into water tank 15 is heat transfer
Water in feed-tank 15, after medium temperature is reduced, density raises the lower collector pipe for entering heat collector through water tank media outlet 14
11, each 9 bottom of comb is entered into along lower collector pipe 11, cold medium cooling self-excited oscillation reinforced heat exchanger 8, while cooling is certainly
Air bag 2 in excited oscillation reinforced heat exchanger, 2 reduced pressure of air bag, spring 5 promote slide head 3 to set back, now elasticity
Card column 4 returns to limit slippage in situ 3 again, and so on, the generation that self-excited oscillation reinforced heat exchanger 8 can go round and begin again
Perturbation wave, this perturbation wave can aggravate the disturbance of heat-conducting medium and then strengthen heat exchange.
Two sets of same flat plate solar water heaters are selected, solar energy heating board size is 2.4 meters × 0.8 meter, and water tank is
120 liters, the wherein comb of a heat collector built with self-excited oscillation reinforced heat exchanger of the present invention, in July to two
Set flat plate solar water heater is tested, follow-on test 7 days, is within wherein four days that whole day is sunny, is within three days that half a day is sunny, remaining
Time is cloudy.Test finds, in four whole day fine days, preferably, 7 points to 9 points of morning is provided with of the present invention illumination condition
The water temperature programming rate of the water-heater water tank of device is identical with the water temperature programming rate of the water-heater water tank for not installing described device,
9 points to 15 points the former water temperature programming rates are more than the latter, and when 15 points, the former water tank water temperature reaches whole day peak, now the latter's ratio
The low 3-5 degree of the former water temperature, when 15 points to 17 points, the former no longer raises water tank water temperature, and the latter's water temperature continues to raise, final the latter's water
Temperature 1-3 degree lower than the former water temperature.In its excess-three day, the hot water that self-excited oscillation rifle of the present invention changes heat-exchanger rig is installed
In device water tank, water temperature can absorb more heats in the short period of time and reach higher temperature, and test result shows within three days,
The water-heater water tank water temperature 5-8 degree higher than the water temperature do not installed of erecting device.
In sum, self-excited oscillation reinforced heat exchanger of the present invention is installed and can greatly improves heat transfer free convection
Heat-exchanging state, its coefficient of heat transfer is substantially increased by the disturbance to heat-conducting medium in solar water heating system, is improve and is
The heat absorption efficiency of system, especially can lift the heat absorption capacity of water heater when sunshine deficiency of time.
Claims (10)
1. a kind of solar energy self-excited oscillation reinforced heat exchanger, is characterized in that it includes the cuplike cavity of one end open,
Slide head is provided with cuplike cavity, water-stop between slide head and cuplike cavity；It is located in slide head side in cuplike cavity
Equipped with low heat capacity liquid thermal conductivity media and air bag；It is located at slide head opposite side in cuplike cavity to be provided with and slide head cooperation
Elastic card column and spring, spring are held between slide head and cuplike cavity peristome.
2. solar energy according to claim 1 self-excited oscillation reinforced heat exchanger, is characterized in that the cuplike cavity
For metallic cavity.
3. solar energy according to claim 1 self-excited oscillation reinforced heat exchanger, is characterized in that cuplike cavity external diameter
Ratio with the comb internal diameter of solar thermal collector is 0.25-0.5, and air bag volume is 0.2- with the ratio of cuplike cavity cavity volume
0.5。
4. solar energy according to claim 1 self-excited oscillation reinforced heat exchanger, is characterized in that the air bag is poly-
Condensation material is made；Inside air bag is sealed with compressed gas；Gaseous species are nitrogen or argon.
5. solar energy according to claim 1 self-excited oscillation reinforced heat exchanger, is characterized in that the slide head is
Metal material.
6. solar energy according to claim 1 self-excited oscillation reinforced heat exchanger, is characterized in that the elastic card column
Embedded cuplike cavity inwall, elastic card column are uniform 3-5 along cuplike cavity inwall circumferencial direction.
7. solar energy according to claim 1 self-excited oscillation reinforced heat exchanger, is characterized in that opening in cuplike cavity
Oral area is provided with the in-flanges of fixed spring.
8. a kind of solar thermal collector, the lower collector pipe that it is included comb and is connected with comb, is characterized in that every comb bottom
And self-excited oscillation reinforced heat exchanger is provided with above lower collector pipe, self-excited oscillation reinforced heat exchanger includes one end
The cuplike cavity of opening, is provided with slide head in cuplike cavity, water-stop between slide head and cuplike cavity；In cuplike cavity
Positioned at slide head side built with low heat capacity liquid thermal conductivity media and air bag；Arrange positioned at slide head opposite side in cuplike cavity
There is the elastic card column and spring coordinated with slide head, spring is held between slide head and cuplike cavity peristome.
9. solar thermal collector according to claim 8, is characterized in that cuplike cavity external diameter with the ratio of comb internal diameter is
0.25-0.5, air bag volume are 0.2-0.5 with the ratio of cuplike cavity cavity volume.
10. solar thermal collector according to claim 8, is characterized in that the air bag is made up of polymeric material；In air bag
Portion is sealed with compressed gas；Gaseous species are nitrogen or argon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615573.XA CN105241094B (en) | 2015-09-24 | 2015-09-24 | Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510615573.XA CN105241094B (en) | 2015-09-24 | 2015-09-24 | Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105241094A CN105241094A (en) | 2016-01-13 |
| CN105241094B true CN105241094B (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510615573.XA Active CN105241094B (en) | 2015-09-24 | 2015-09-24 | Solar autoexcitation oscillation enhancing heat exchanging device and solar thermal collector |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308856A (en) * | 1978-05-25 | 1982-01-05 | S.A. Lipsudest | Protection against the freezing of solar collectors |
| CN201196514Y (en) * | 2007-12-28 | 2009-02-18 | 中国航天科技集团公司第五研究院第五一〇研究所 | Cool end heat exchanger of pulse tube refrigerator |
| CN201373603Y (en) * | 2009-02-25 | 2009-12-30 | 张培洲 | Solar collecting, transmitting and storing system |
| CN203349541U (en) * | 2013-06-12 | 2013-12-18 | 威海澳华新能源有限公司 | Split-type solar water heater with U-shaped pipe heat collector and built-in snakelike enamel heat exchanger |
| CN204285854U (en) * | 2014-12-01 | 2015-04-22 | 南京工业大学 | Oscillating heat pipe formula vacuum tube solar heating element |
-
2015
- 2015-09-24 CN CN201510615573.XA patent/CN105241094B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4308856A (en) * | 1978-05-25 | 1982-01-05 | S.A. Lipsudest | Protection against the freezing of solar collectors |
| CN201196514Y (en) * | 2007-12-28 | 2009-02-18 | 中国航天科技集团公司第五研究院第五一〇研究所 | Cool end heat exchanger of pulse tube refrigerator |
| CN201373603Y (en) * | 2009-02-25 | 2009-12-30 | 张培洲 | Solar collecting, transmitting and storing system |
| CN203349541U (en) * | 2013-06-12 | 2013-12-18 | 威海澳华新能源有限公司 | Split-type solar water heater with U-shaped pipe heat collector and built-in snakelike enamel heat exchanger |
| CN204285854U (en) * | 2014-12-01 | 2015-04-22 | 南京工业大学 | Oscillating heat pipe formula vacuum tube solar heating element |
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| Publication number | Publication date |
|---|---|
| CN105241094A (en) | 2016-01-13 |
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Effective date of registration: 20210126 Address after: 250101 room 2118, building 1, Shangri La, West Convention and Exhibition Road, high tech Zone, Jinan City, Shandong Province Patentee after: Shandong Kaifu new energy Co.,Ltd. Address before: No. 19, ASTRI Road, Lixia District, Shandong, Ji'nan Patentee before: SHANDONG ANNAJI ENERGY TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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