CN108332438A - A kind of method and apparatus that the self-loopa of salt gradient solar pond puies forward heat - Google Patents
A kind of method and apparatus that the self-loopa of salt gradient solar pond puies forward heat Download PDFInfo
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- CN108332438A CN108332438A CN201810008444.8A CN201810008444A CN108332438A CN 108332438 A CN108332438 A CN 108332438A CN 201810008444 A CN201810008444 A CN 201810008444A CN 108332438 A CN108332438 A CN 108332438A
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- heat
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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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Abstract
The present invention relates to the method and apparatus that salt gradient solar pond thermal extraction technical field more particularly to a kind of salt gradient solar pond self-loopa put forward heat.It is characterized in that, circulation canal one end is connected with troposphere under salt gradient solar pond, under the driving of density contrast of the hot salt brine caused by the temperature difference, it flows into the hot charge and discharge device of the circulation canal other end, brine heat release in hot charge and discharge device, temperature reduce, and density increases, therefore the cool brine after heat release flows back to the lower troposphere of salt gradient solar pond along circulation canal bottom, and heat is put forward to complete self-loopa；Heat exchanger is set in hot charge and discharge device, and the cold fluid inlet for user's heat extraction and the hot fluid outlet ports after heat exchange are set, to which the heat in hot charge and discharge device is constantly supplied to user.
Description
Technical field
The present invention relates to salt gradient solar pond thermal extraction technical fields more particularly to a kind of salt gradient solar pond self-loopa to carry
The method and apparatus of heat.
Background technology
With the problems such as fossil energy develops consumption by a large amount of, this problem of shortage of resources is more and more prominent, environmental pollution
Also it is constantly suggested.Solar energy has many advantages, such as rich reserves as a kind of regenerative resource, pollution-free.Salt gradient solar pond
It is a kind of Solar use mode for integrating and absorbing and storing solar energy, by higher troposphere, non-convection layer and lower troposphere
It constitutes, wherein higher troposphere is fresh water aquifer, and non-convection layer salinity change in gradient, and the density gradient as caused by concentration difference can be with
Inhibit the free convection because of caused by temperature difference, the high brine of bottom temp not to float, can effectively inhibit thermal convection current in this way, rises
To the effect of heat preservation, lower troposphere is reservoir, is made of strong brine, the solar energy into salt pond is changed into thermal energy storage under
In troposphere.Salt gradient solar pond has many problems to have as using a kind of form of solar energy although having many good qualities
It is to be solved.For large area solar pond, although total quantity of heat storage is big, the extraction of heat and using there is also much not
Foot, at present solar pond carry hot mode mainly and have and directly carry Re Fa and put forward hot method indirectly, both modes have shortcoming.Directly
Connect carry hot method directly extract under tropospheric strong brine exchange heat, this is very big to the disturbance of solar pond gradient layer.Put forward heat indirectly
Method is that internal exchanger is arranged in salt gradient solar pond reservoir, and heat is transmitted to by internal exchanger outside salt gradient solar pond
Portion, this method cost is high, troublesome maintenance, and is only applicable to middle-size and small-size solar pond, and efficiency of utilization is low.
Invention content
In conclusion the purpose of the present invention is being directed to the above situation, provides a kind of salt gradient solar pond self-loopa and put forward heat
Method and apparatus, this method and device carry out heat transfer free convection and cycle using the temperature difference as circulation power under action of thermal difference,
Reach a kind of and continuously putting forward heat, stablizes the purpose of cycle, overcome the deficiency of present salt gradient solar pond heat extraction technology, and have
Have and continuously put forward heat, small, the advantages that efficiency of utilization is high is disturbed to solar pond.
The present invention solves its technical problem and is achieved through the following technical solutions：
A kind of method that the self-loopa of salt gradient solar pond puies forward heat：
This method includes salt gradient solar pond（1）Thermal modules are put forward with self-loopa, self-loopa puies forward thermal modules by circulation canal（6）And heat
Charge and discharge device（8）Composition, hot charge and discharge device（8）It is internally provided with phase-transition heat-storage unit（9）And heat exchanger（11）, the circulation canal
（6）With hot charge and discharge device（8）Connected interface should be higher than that circulation canal（6）With lower troposphere（4）Connected interface, i.e. circulation canal
（6）By direction arrangement obliquely, hot charge and discharge device（8）In liquid level be less than salt gradient solar pond（1）Upper surface；Wherein, by salt
Gradient solar pond（1）It absorbs and the heat of storage passes through circulation canal（6）Pass to hot charge and discharge device（8）, and pass through hot charge and discharge device
（8）In heat exchanger（11）Heat is constantly extracted, hot systems are carried to constitute self-loopa.
Further, the operation principle of this method is：Salt gradient solar pond（1）Lower troposphere（4）With brine recycling
Channel（6）, under the driving of density contrast of the hot salt brine caused by the temperature difference, flow into and be located at circulation canal（6）The hot charge and discharge of the other end
Device（8）In, in hot charge and discharge device（8）Middle heat release, temperature reduce, and density increases, therefore the cool brine after heat release is along circulation canal（6）
Salt gradient solar pond is flowed back in bottom（1）Lower troposphere（4）, so in cycles, lower troposphere（4）In brine with naturally right
The mode for flowing heat exchange, by heat constantly from salt gradient solar pond（1）Bring hot charge and discharge device into（8）In, to realize salt gradient solar pond
（1）Heat extraction.
Further, the hot charge and discharge device（8）Increase thermmal storage density by phase change heat storage material, and has and carried to user
The heat exchange function of heating load.
Further, the hot charge and discharge device（8）In liquid level can pass through hot charge and discharge device（8）Middle free space（10）
Gas pressure adjust.
A kind of salt gradient solar pond self-loopa carries the device of heat：
Salt gradient solar pond（1）Lower troposphere（4）Circulation canal is arranged in side wall（6）, circulation canal（6）One end and the salt gradient sun
Pond（1）Lower troposphere（4）It is connected, one end and hot charge and discharge device（8）It is connected, to hot charge and discharge device（8）Pass through circulation canal（6）With salt
Gradient solar pond（1）Form the brine free air space communicated.Hot charge and discharge device（8）Top is provided with gas pipeline（13）, flue
Road（13）On be provided with valve（12）, gas pipeline（13）One end and hot charge and discharge device（8）In free space（10）It is connected, it is another
End and gas pressure regulator（14）It is connected.
Further, it refers to salt gradient solar pond that the salt gradient solar pond self-loopa, which puies forward heat,（1）Lower troposphere（4）In
Hot salt brine passes through circulating line under the action of density contrast（6）Flow into hot charge and discharge device（8）In, in hot charge and discharge device（8）Middle release heat
Amount, the cool brine after temperature reduction is again along circulation canal（6）Flow into lower troposphere（4）, to realize heat constantly under
Troposphere（4）It is transmitted to hot charge and discharge device（8）In.
Further, the hot charge and discharge device（8）Top is the free space with certain gas（10）, the free space
（10）Wall surface and gas pipeline（13）It is connected, gas pipeline（13）Upper setting valve（12）, gas pipeline（13）The other end
With pressure controller（14）It is connected, pressure controller（14）For controlling hot charge and discharge device（8）Middle free space（10）Pressure, from
And control hot charge and discharge device（8）In liquid level.
Further, the hot charge and discharge device（8）Add phase-transition heat-storage unit in bottom（9）, the phase-transition heat-storage unit（9）For dress
There is the solid encapsulation structure of phase-change heat-storage material.
Further, the circulation canal（6）With hot charge and discharge device（8）Grid is arranged in connected interface（7）, to prevent heat
Charge and discharge device（8）In phase-transition heat-storage unit（9）Flow into circulation canal（6）.
Further, the hot charge and discharge device（8）Middle setting heat exchanger（11）, and the cold flow for user's heat extraction is set
Body import（15）And the hot fluid outlet ports after heat exchange（16）, thus by hot charge and discharge device（8）In heat be constantly supplied to user.
This method and device overcome the deficiency for directly carrying Re Fa and putting forward hot method indirectly, and inherit existing heat exchange mode
Advantage, heat exchange efficiency is high, is disturbed to salt gradient solar pond small.
The advantageous effect of patent of the present invention：
1. salt gradient solar pond self-loopa that patent of the present invention is provided carry hot method with caused by the temperature difference of brine itself from
Right convection current is driving force, heat extraction is come out, to salt gradient solar pond（1）Gradient layer stability influence very little.
2. the salt gradient solar pond self-loopa that patent of the present invention provides puies forward hot method with caused by the temperature difference of brine itself
Free convection is driving force, transfers heat to external hot charge and discharge device（8）, it is not required in salt gradient solar pond（1）Built in middle setting
Heat exchanger, cost is few, easy to maintain, is not necessarily to external impetus.
3. the method and apparatus that a kind of salt gradient solar pond self-loopa that patent of the present invention provides puies forward heat, hot charge and discharge device（8）
Middle setting phase-transition heat-storage unit（9）, heat can be stored with high-energy density, and released during thermal extraction
Come.
4. the method and apparatus that a kind of salt gradient solar pond self-loopa that patent of the present invention provides puies forward heat, hot charge and discharge device（8）
In liquid level can pass through hot charge and discharge device（8）Middle free space（10）Gas pressure be adjusted, to control the sun
Thermal extraction amount in pond achievees the purpose that controlling self-loopa puies forward heat.
5. the salt gradient solar pond self-loopa that patent of the present invention provides carries the hot charge and discharge device described in hot method（8）In set
It is equipped with user's cold fluid inlet（15）And hot fluid outlet ports（16）, pass through heat exchanger（11）It can be achieved to supply to user's continuous-stable
Heat.
Description of the drawings
Fig. 1 is the schematic diagram of the method for the present invention.
Fig. 2 is the schematic diagram of apparatus of the present invention.
Specific implementation mode
Below in conjunction with attached drawing, the present invention is described in further detail.
As shown in Figure 1, 2, this method includes salt gradient solar pond（1）Thermal modules are put forward with self-loopa, self-loopa puies forward thermal modules
By circulation canal（6）With hot charge and discharge device（8）Composition, hot charge and discharge device（8）Inside setting phase-transition heat-storage unit（9）And heat exchanger
（11）, circulation canal（6）With hot charge and discharge device（8）Connected interface should be higher than that circulation canal（6）With lower troposphere（4）Connected connects
Mouth, i.e. circulation canal（6）By direction arrangement obliquely, hot charge and discharge device（8）In liquid level be less than salt gradient solar pond（1）Upper table
Face；In salt gradient solar pond（1）Lower troposphere（4）It is provided with brine recycling channel（6）, hot salt brine is close caused by the temperature difference
It spends under the driving of difference, flows into and be located at circulation canal（6）The hot charge and discharge device of the other end（8）In, in hot charge and discharge device（8）Middle heat release, temperature
Degree reduces, and density increases, therefore the cool brine after heat release is along circulation canal（6）Salt gradient solar pond is flowed back in bottom（1）It is lower right
Fluid layer（4）, so in cycles, lower troposphere（4）Brine in a manner of heat transfer free convection, by heat constantly from salt gradient too
Yang Chi（1）Bring hot charge and discharge device into（8）In, and pass through hot charge and discharge device（8）In heat exchanger（11）Heat is constantly extracted, from
And constitute self-loopa and carry hot systems, realize salt gradient solar pond（1）Thermal extraction.
As shown in Fig. 2, the course of work of the device is as follows：Solar radiant energy is by higher troposphere（2）Into the salt gradient sun
Pond（1）, by heat conduction in non-convection layer（3）It is lost to a part of heat in environment, remaining solar radiant energy is transformed into thermal energy
In lower troposphere（4）It is middle to store, wherein non-convection layer（3）Play the role of insulating layer, with troposphere at present（4）Middle setting
Porous medium layer（5）, porous media not only has good heat conductivility and larger specific heat capacity, also with storage in certain time
The effect of heat, to enhance the heat accumulation mean temperature of solar pond and effectively inhibit salt gradient solar pond（1）Salt diffusion phenomena.Under
Troposphere（4）Circulation canal is arranged in side wall（6）, circulation canal（6）One end and salt gradient solar pond（1）Lower troposphere（4）It is connected,
One end and hot charge and discharge device（8）It is connected, to hot charge and discharge device（8）Pass through circulation canal（6）With salt gradient solar pond（1）Formation communicates
Brine free air space.Hot charge and discharge device（8）Top is provided with gas pipeline（13）, gas pipeline（13）On be provided with valve
（12）, gas pipeline（13）One end and hot charge and discharge device（8）In free space（10）It is connected, the other end and gas pressure regulator
（14）It is connected, pressure controller（14）For controlling hot charge and discharge device（8）Middle free space（10）Gas pressure, to control heat
Charge and discharge device（8）In liquid level, to control the thermal extraction amount in solar pond, achieve the purpose that control self-loopa put forward heat.Together
When, hot charge and discharge device（8）Phase-transition heat-storage unit of the bottom addition equipped with phase-change heat-storage material（9）, increased by phase change heat storage material
Big thermmal storage density is to increase hot charge and discharge device（8）Heat exchange amount, and in circulation canal（6）With hot charge and discharge device（8）Connected connects
Grid is set at mouthful（7）, to prevent hot charge and discharge device（8）In phase-transition heat-storage unit（9）Solar pond, which is flowed into, with brine causes the sun
Pond disturbs；Under the driving of density contrast of the hot salt brine caused by the temperature difference, flows into and be located at circulation canal（6）The hot charge and discharge device of the other end
（8）In, in hot charge and discharge device（8）Middle heat release, temperature reduce, and density increases, therefore the cool brine after heat release is along circulation canal（6）Bottom
Salt gradient solar pond is flowed back in portion（1）Lower troposphere（4）, while pressure controller（14）Hot charge and discharge device can also be adjusted（8）In
Free space（10）In gas pressure, the cool brine after heat release flows into salt gradient solar pond under the driving of density contrast and pressure
（1）Lower troposphere（4）In, so in cycles, salt gradient solar pond（1）Lower troposphere（4）In hot salt brine in density contrast
Under the action of, hot charge and discharge device is flowed by circulating line 6（8）In, in hot charge and discharge device（8）Middle release heat, after temperature reduces
Brine is again along circulation canal（6）Flow into lower troposphere（4）, to realize heat constantly from lower troposphere（4）It is transmitted to heat
Charge and discharge device（8）In, hot charge and discharge device（8）Middle setting heat exchanger（11）, and the cold fluid inlet for user's heat extraction is set
（15）And the hot fluid outlet ports after heat exchange（16）, cold fluid is from cold fluid inlet（15）Into heat exchanger（11）, in heat exchanger
（11）Hot fluid after middle heat exchange is from hot fluid outlet ports（16）Outflow, thus by hot charge and discharge device（8）In heat be constantly supplied to
User.
Hot charge and discharge device described in patent of the present invention（8）In heat exchanger（11）It puies forward heat heat pipe may be used and put forward heat, while heat
Charge and discharge device（8）It is set as two layers, the condensation segment of heat pipe is placed by lower layer, and the evaporator section of heat pipe is placed on upper layer.
Hot charge and discharge device described in patent of the present invention（8）In phase-transition heat-storage unit（9）In phase change heat storage material can adopt
Use paraffin.
According to devices discussed above and salt gradient solar pond（1）With hot charge and discharge device（8）Connected circulation canal（6）It can be with
Mechanical device is set, so that its angle of inclination is become adjustable, specific angle should be related to local solar radiation angle.
Hot charge and discharge device described in patent of the present invention（8）In temperature sensor can be set, and pass through microcontroller control pressure control
Device processed（14）, when temperature is reduced to certain value, can control pressure controller（14）, increase hot charge and discharge device（8）Middle free space
（10）Gas pressure, make hot charge and discharge device（8）In brine pass back into lower troposphere（4）In.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (8)
1. a kind of method that salt gradient solar pond self-loopa puies forward heat, including salt gradient solar pond（1）Thermal modules are put forward with self-loopa, from
Cycle puies forward thermal modules by circulation canal（6）, hot charge and discharge device（8）And pressure control module composition, hot charge and discharge device（8）It is internally provided with
Phase-transition heat-storage unit（9）And heat exchanger（11）；Pressure control module is for controlling hot charge and discharge device（8）Interior pressure, pressure control
Module includes valve（12）, gas pipeline（13）And pressure controller（14）；The self-loopa puies forward heat and refers to by the salt gradient sun
Pond（1）It absorbs and the heat of storage passes through circulation canal（6）Pass to hot charge and discharge device（8）, and pass through hot charge and discharge device（8）In change
Hot device（11）Heat is constantly extracted；Wherein, the circulation canal（6）With hot charge and discharge device（8）Connected interface answers height
In circulation canal（6）With lower troposphere（4）Connected interface, i.e. circulation canal（6）By direction arrangement obliquely；Hot charge and discharge device
（8）In liquid level be less than salt gradient solar pond（1）Upper surface.
2. the method that a kind of salt gradient solar pond self-loopa according to claim 1 puies forward heat, operation principle is, in salt
Gradient solar pond（1）Lower troposphere（4）With circulation canal（6）, i.e. circulation canal（6）One end and lower troposphere（4）It is connected,
Under the driving of density contrast of the hot salt brine caused by the temperature difference, flows into and be located at circulation canal（6）The hot charge and discharge device of the other end（8）In,
In hot charge and discharge device（8）Middle heat release, temperature reduce, and density increases, therefore the cool brine after heat release is along circulation canal（6）Bottom is flowed back to
Salt gradient solar pond（1）Lower troposphere（4）, so in cycles, lower troposphere（4）In brine with heat transfer free convection
Mode, by heat constantly from salt gradient solar pond（1）Bring hot charge and discharge device into（8）In, to realize salt gradient solar pond（1）Heat carry
It takes.
3. the method that a kind of salt gradient solar pond self-loopa according to claim 1 puies forward heat, it is further characterized in that, it is described
Hot charge and discharge device（8）Pass through phase-transition heat-storage unit（9）Increase thermmal storage density, and with the function of discharging heat to user.
4. the method that a kind of salt gradient solar pond self-loopa according to claim 1 puies forward heat, which is characterized in that hot charge and discharge device
（8）In liquid level can pass through hot charge and discharge device（8）Middle free space（10）Gas pressure adjust.
5. a kind of salt gradient solar pond self-loopa carries the device of heat, which is characterized in that salt gradient solar pond（1）Lower troposphere（4）
Circulation canal is arranged in side wall（6）, circulation canal（6）One end and salt gradient solar pond（1）Lower troposphere（4）Be connected, the other end with
Hot charge and discharge device（8）It is connected, to hot charge and discharge device（8）Pass through circulation canal（6）With salt gradient solar pond（1）Form the brine communicated
Free air space；Hot charge and discharge device（8）Top is the free space with certain gas（10）, the free space（10）With gas pipeline
（13）It is connected, gas pipeline（13）On be provided with valve（12）, gas pipeline（13）One end and hot charge and discharge device（8）In it is freely empty
Between（10）It is connected, the other end and gas pressure regulator（14）It is connected, pressure controller（14）For controlling hot charge and discharge device（8）In
Free space（10）Pressure, to control hot charge and discharge device（8）In liquid level.
6. a kind of salt gradient solar pond self-loopa according to claim 5 carries the device of heat, which is characterized in that the heat
Charge and discharge device（8）Add phase-transition heat-storage unit in bottom（9）, the phase-transition heat-storage unit（9）For the solid envelope equipped with phase-change heat-storage material
Assembling structure.
7. a kind of salt gradient solar pond self-loopa according to claim 5 carries the device of heat, which is characterized in that described follows
Ring channel（6）With hot charge and discharge device（8）Grid is arranged in connected interface（7）, to prevent hot charge and discharge device（8）In phase-transition heat-storage list
Member（9）Flow into circulation canal（6）.
8. a kind of salt gradient solar pond self-loopa according to claim 5 carries the device of heat, which is characterized in that the heat
Charge and discharge device（8）Middle setting heat exchanger（11）, and the cold fluid inlet for user's heat extraction is set（15）And the heat after heat exchange
Fluid outlet（16）, thus by hot charge and discharge device（8）In heat be constantly supplied to user.
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| CN201810008444.8A CN108332438B (en) | 2018-01-04 | 2018-01-04 | A kind of method and apparatus that the self-loopa of salt gradient solar pond proposes heat |
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| CN201810008444.8A CN108332438B (en) | 2018-01-04 | 2018-01-04 | A kind of method and apparatus that the self-loopa of salt gradient solar pond proposes heat |
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| CN108332438A true CN108332438A (en) | 2018-07-27 |
| CN108332438B CN108332438B (en) | 2019-08-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159498A (en) * | 2019-06-24 | 2019-08-23 | 河南理工大学 | A kind of piston type hot-air engine device based on salt gradient solar pond |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4244351A (en) * | 1978-11-06 | 1981-01-13 | Intertechnology/Solar Corporation | Solar collection system |
| US4429683A (en) * | 1982-09-29 | 1984-02-07 | The United States Of America As Represented By The United States Department Of Energy | Gradient zone boundary control in salt gradient solar ponds |
| JPS60251346A (en) * | 1984-05-29 | 1985-12-12 | Toshiba Corp | System utilizing solar heat by solar pond |
| CN2094547U (en) * | 1990-12-28 | 1992-01-29 | 国家海洋局天津海水淡化与综合利用研究所 | Honeycomb type circulating solar pond seawater desalination device |
| CN102183096A (en) * | 2011-03-18 | 2011-09-14 | 上海电力学院 | Solar pond composite drying system |
| CN202470492U (en) * | 2011-12-06 | 2012-10-03 | 河南理工大学 | Device for maintaining stability of salt gradient solar pond |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110159498A (en) * | 2019-06-24 | 2019-08-23 | 河南理工大学 | A kind of piston type hot-air engine device based on salt gradient solar pond |
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