CN105042677A - Heating device and method for solar antigravity natural circulation - Google Patents
Heating device and method for solar antigravity natural circulation Download PDFInfo
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- CN105042677A CN105042677A CN201510522616.XA CN201510522616A CN105042677A CN 105042677 A CN105042677 A CN 105042677A CN 201510522616 A CN201510522616 A CN 201510522616A CN 105042677 A CN105042677 A CN 105042677A
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- natural circulation
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Abstract
The invention discloses a heating device and method for solar antigravity natural circulation and belongs to the technical field of solar energy heat utilization. The heating device is mainly composed of a heat collecting board, an evaporator, a condenser, a semipermeable membrane pipe and the like. A capillary core of a porous structure is arranged at the upper portion of the evaporator and the lower portion of the evaporator is connected with the semipermeable membrane pipe arranged in a liquid collection tank. Before work, a saline solution with certain concentration is injected in an evaporation cavity and the semipermeable membrane pipe; when solar energy is collected through the solar heat collecting board, the temperature of the capillary core in the evaporator is increased, liquid evaporates, generated steam is condensed, heat is released, and low-concentration liquid generated through condensation flows into the liquid collection tank. The osmotic pressure difference generated by the concentration difference is used for achieving antigravity natural circulation heat supply, and liquid circulation does not need to be maintained through a vacuum pump or a circulating pump. The heating device is simple in structure and convenient to operate, heat efficiency is improved, cost is reduced, and a good means and the method are provided for further utilization of solar energy.
Description
Technical field
The invention belongs to solar energy utilization technique field, in particular to a kind of heating plant and heat supply method of solar energy antigravity Natural Circulation, be be thermal source with solar energy specifically, the transpiration pull utilizing liquid to evaporate to produce and pellicle concentration difference are to realize the solar energy heat utilization device of antigravity Natural Circulation heat supply.
Background technology
Along with the development of science and technology, had very large progress in solar energy, power-saving technology and heat supply, its development trend utilizes the energy that is reproducible, environmental protection as much as possible, and provide top quality resource as possible to people under the prerequisite of Low investment cost.Solar energy is a kind of clean energy resource, and has generality, huge property and inexhaustible advantage, therefore has wide development and utilization prospect.In recent years, along with the development of heliotechnics, people have started general applied solar energy heat supply.But current technical costs is also higher, system is comparatively complicated.Compared with traditional solar-heating, the development that the use of solar energy antigravity Natural Circulation technology is heliotechnics provides and wide utilizes space, can not mechanical dynamic system be used and produce Natural Circulation power under the prerequisite of heat supply, having saved the use of fuel, and environmental protection.
Summary of the invention
The object of this invention is to provide a kind of heating plant and heat supply method of solar energy antigravity Natural Circulation, it is characterized in that, the structure of the heating plant of described solar energy antigravity Natural Circulation is: collecting plate is connected with evaporimeter, the output of evaporimeter is connected with condenser by pipeline, condenser output is connected with liquid collecting tank, be provided with spiral pellicle pipe in liquid collecting tank, pellicle pipe is connected with the input of evaporimeter by pipeline, is provided with the capillary wick of loose structure in evaporimeter.
Described collecting plate is flat type solar heat collector or electron tubes type solar thermal collector.
Described condenser is single-stage condenser or multi-stage condensing device, and described condenser selects radiator or water heater.
Described evaporimeter is single-stage evaporator or multi-stage evaporator.
The epicoele of described evaporimeter is made up of loose structure, adopts powder sintered surface or silk screen or foam metal covering surfaces; The upper surface of loose structure sinters the nanostructured of Leaves'Shape into.
Described pellicle is hollow-semi-permeable pipe, pellicle ensure hydrone can pass through, salinity not by.
The material of described pipeline is glass, stainless steel or aluminum alloy materials.
Described liquid collecting tank is hermetic type.
Described level sensor makes liquid just moistening capillary wick by by-pass valve control, ensures the liquid supply required for evaporation.
The heating plant of described a kind of solar energy antigravity Natural Circulation, is characterized in that heat collector, evaporimeter, does not need the maintenance of pump and keep airtight during the work such as condenser.
The heat supply method of described solar energy antigravity Natural Circulation is, first in evaporation cavity and pellicle pipe, perfusion has certain density salting liquid, salt-free liquid juice (water) is filled again in liquid collecting tank, controlled the height of liquid level by control valve, the transpiration pull produced when utilizing liquid to evaporate and strength of fluid pressure realize the antigravity circulation of liquid, the capillary wick of loose structure is provided with in evaporimeter, the liquid that capillary wick absorbs is condensed into liquid after at high temperature evaporating and entering condenser, during condensation, institute's liberated heat realizes the demand of heat supply by condenser, condensed fluid then enters liquid collecting tank by gravity, being placed on pellicle pipe in liquid collecting tank due to the osmotic pressure that gradient of liquids inside and outside film produces makes the liquid in liquid collecting tank constantly enter into pellicle pipe interior by pellicle, enter in evaporation cavity via pipeline again, the capillary attraction that liquid evaporates transpiration pull and the capillary wick produced make liquid absorb by capillary wick, at heat collector, when evaporimeter and condenser work under remaining airtight state, the circulation of liquid does not need the maintenance of pump and realizes an antigravity heating cycle not needing pump to maintain.
Described salting liquid by salt higher for some solubility, as Nacl, NaNO
3and KNO
3be prepared from etc. being dissolved in water.Its concentration of salt solution can be selected according to the height of antigravity needed for heating plant, considers the resistance suffered by liquid flow, and the osmotic pressure that selected concentration produces is greater than or equals antigravity height, as 9.0gL
-1the osmotic pressure of Nacl solution 37 DEG C time is approximately 7.9 × 10
2kPa, the antigravity height reached is about 80.5m, if therefore antigravity height is 80.5m, then salinity must be greater than 9.0gL
-1.
Beneficial effect of the present invention is: the permeable pressure head that this device utilizes concentration difference to produce realizes the heat supply of antigravity Natural Circulation, does not need vavuum pump, circulating pump etc. to maintain the circulation of liquid.Be cooled to liquid after the steam produced in evaporimeter enters condenser and enter liquid collecting tank, the concentration of liquid collecting pot liquid is very low, by continuous circulation, pressure in pellicle pipe raises gradually, thus the transpiration pull utilizing liquid to evaporate to produce and pellicle pipe both sides different liquids concentration difference produce osmotic pressure to make the liquid in liquid collecting tank through pellicle pipe not cracked ends pipeline enter in evaporimeter, and the liquid level that can maintain evaporimeter is higher than liquid collecting tank, impels constantly carrying out of antigravity Natural Circulation.Therefore the method and device reduce the cost of investment of solar thermal utilization and reduce energy consumption, have good promotional value.The operating structure of this device is simple, easy to operate, also provides good means for utilizing solar energy to carry out heat supply further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heating plant of solar energy antigravity Natural Circulation;
Fig. 2 is the inner schematic diagram of evaporimeter;
Fig. 3 is the penetration theory figure of pellicle pipe.
Reference numeral: 1-collecting plate; 2-evaporimeter; 3-condenser; 4-liquid collecting tank; 5-silk screen; 6-evaporimeter epicoele; The spiral pellicle pipe of 7-; 8-steam vent tube; 9-condensate drain road; 10-liquid collecting tank efferent duct; 11-first control valve; 12-second control valve; 13-the 3rd control valve; 14-draining valve; 15-liquid collecting tank liquor charging valve; 16-the 4th control valve; 17-evaporimeter liquor charging valve; 18-level sensor; 19-reservoir; 20-reservoir; 21-gas collector.
Detailed description of the invention
Invention provides a kind of heating plant and heat supply method of solar energy antigravity Natural Circulation, and below in conjunction with the drawings and specific embodiments, the present invention will be further described.
Fig. 1 is the structural representation of the heating plant of solar energy antigravity Natural Circulation.This device is provided with collecting plate 1, and collecting plate 1 is connected with evaporimeter 2, and the output of evaporimeter 2 is connected with condenser 3 by the first pipeline 8, and the second pipe 9 that condenser 3 exports is connected with liquid collecting tank 4.Wherein, solar thermal collector 1 collection solar energy impels liquid evaporation in evaporimeter 2.The evaporation epicoele 6 of evaporimeter 2 is porous structure materials, has lyophily and large specific area, and object is conducive to imbibition and increases disengagement area, thus accelerate evaporation.Evaporimeter 2 bypass is provided with level sensor 18, controls the liquid level in evaporimeter 2 with this, makes liquid just moistening capillary wick, ensures the liquid supply required for evaporation.Even if device poor sealing also can short-term job.Gas after evaporation enters into condensation in condenser 3 and forms the solution of low concentration, the solution of low concentration enters liquid collecting tank, because osmotic pressure effect enters into the salting liquid in pellicle pipe 7, thus solution forms antigravity enters in evaporimeter 2 again and carry out work, material is thus formed continual and steady Natural Circulation heat supply, namely the circulation of liquid does not need the maintenance of pump and realizes an antigravity heating cycle not needing pump to maintain.
Fig. 2 is the inner schematic diagram of evaporimeter.Namely loose structure in evaporimeter sinters capillary wick and carries out imbibition, and the liquid then by the effect of heat in collecting plate, capillary wick being sucked evaporates.Sintering capillary wick is nanometer Multi-scale model, has lyophily and large specific area, and object is conducive to imbibition and increases disengagement area, thus accelerate evaporation, remarkable enhanced heat exchange.
Fig. 3 is the penetration theory figure of pellicle pipe.Only have water naturally can pass pellicle pipe from low concentration region to high concentration region, and solute can not pass pellicle pipe to low concentration region by high concentration region, finally causes the Guan Zhonghui of highly concentrated solution higher than the liquid level of low dope (see Fig. 1).
Specific works principle is before the heating plant work of solar energy antigravity Natural Circulation, close the first control valve 11, second control valve 12, the 3rd control valve 13, draining valve 14, the 4th control valve 16, open evaporimeter liquor charging valve 17, poured in evaporimeter 2 by reservoir 19 and there is certain density salting liquid, open liquid collecting tank liquor charging valve 15 simultaneously, in liquid collecting tank 4, fill salt-free liquid juice (water) by reservoir 20.Because evaporation cavity 2 inner salt strength of fluid is large, the liquid of liquid collecting tank 4 constantly enters evaporation cavity 2 through pellicle pipe 7 by pipeline 10.The heat that solution in evaporation cavity 2 is produced by absorb set hot plate and evaporating, produces steam, makes there is certain pressure in evaporimeter.Open the first control valve 11, steam enters condenser 3, and constantly condensation.The second control valve 12 is opened, until closure set flow container liquor charging valve 15 when second pipe 9 is full of liquid after producing enough condensate liquids in condenser.Material is thus formed continual and steady Natural Circulation heat supply.Draining valve 14, liquid collecting tank liquor charging valve 15, evaporimeter liquor charging valve 17 are for the amount of solution in controlled circulation system.Once system starts, the first control valve 11, second control valve 12 and the 3rd control valve 13 are just in normally open.
Described salting liquid is prepared from, as Nacl, NaNO by salt higher for some solubility is dissolved in water
3and KNO
3deng.Its concentration of salt solution can be selected according to the height of antigravity needed for heating plant, considers the resistance suffered by liquid flow, and the osmotic pressure that selected concentration produces is greater than and equals antigravity height; Namely at 9.0gL
-1the osmotic pressure of Nacl solution 37 DEG C time is approximately 7.9 × 10
2kPa, the antigravity height reached is 80.5m, if therefore antigravity height is 80.5m, then salinity must be greater than 9.0gL
-1;
In the heating plant of solar energy antigravity Natural Circulation, incoagulable gas exclusion process is: close the first control valve 11 and the second control valve 12, opens the 4th control valve 16, incoagulable gas is entered gas collector 21.
Both having can be used alone at the heating plant of solar energy antigravity Natural Circulation also can be used in combination with other circulatory system methods.
Above-mentioned detailed description is illustrating for embodiment of the present invention, this device makes full use of liquid and evaporates the osmotic pressure that the transpiration pull that produces and pellicle pipe concentration difference produce and make liquid constantly enter in evaporation cavity through pellicle pipe, thus form evaporimeter arrives liquid collecting tank again Natural Circulation process to condenser, this process does not need machine power, reduce the cost of investment of solar energy equipment and reduce energy consumption, there is good promotional value.
Claims (10)
1. the heating plant of a solar energy antigravity Natural Circulation, it is characterized in that, the structure of the heating plant of described solar energy antigravity Natural Circulation is: collecting plate is connected with evaporimeter, the output of evaporimeter is connected with condenser by pipeline, condenser output is connected with liquid collecting tank, be provided with spiral pellicle pipe in liquid collecting tank, pellicle pipe is connected with the input of evaporimeter by pipeline, is provided with the capillary wick of loose structure in evaporimeter.
2. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, described collecting plate is flat type solar heat collector or electron tubes type solar thermal collector.
3. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, described condenser is single-stage condenser or multi-stage condensing device, and wherein condenser selects radiator or water heater.
4. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, described evaporimeter is single-stage evaporator or multi-stage evaporator.
5. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, the epicoele of described evaporimeter is made up of loose structure, adopts powder sintered surface or silk screen or foam metal covering surfaces; The upper surface of loose structure sinters the nanostructured of Leaves'Shape into.
6. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, described pellicle is hollow-semi-permeable pipe, and pellicle ensures that hydrone can pass through, salinity not by.
7. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, the material of described pipeline is glass, stainless steel or aluminum alloy materials.
8. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, described liquid collecting tank is hermetic type.
9. the heating plant of solar energy antigravity Natural Circulation according to claim 1, it is characterized in that, described level sensor makes liquid just moistening capillary wick by by-pass valve control, ensures the liquid supply required for evaporation.
10. the heat supply method of a solar energy antigravity Natural Circulation, it is characterized in that, first in evaporation cavity and pellicle pipe, perfusion has certain density salting liquid, salt-free liquid juice is filled again in liquid collecting tank, controlled the height of liquid level by control valve, the transpiration pull produced when utilizing liquid to evaporate and strength of fluid pressure realize the antigravity circulation of liquid, the capillary wick of loose structure is provided with in evaporimeter, the liquid that capillary wick absorbs is condensed into liquid after at high temperature evaporating and entering condenser, during condensation, institute's liberated heat realizes the demand of heat supply by condenser, condensed fluid then enters liquid collecting tank by gravity, being placed on pellicle pipe in liquid collecting tank due to the osmotic pressure that gradient of liquids inside and outside film produces makes the liquid in liquid collecting tank constantly enter into pellicle pipe interior by pellicle, enter in evaporation cavity via pipeline again, the capillary attraction that liquid evaporates transpiration pull and the capillary wick produced make liquid absorb by capillary wick, at heat collector, when evaporimeter and condenser work under remaining airtight state, the circulation of liquid does not need the maintenance of pump and realizes an antigravity heating cycle not needing pump to maintain,
Described concentration of salt solution is then selected according to the height of antigravity needed for heating plant, but considers the resistance suffered by liquid flow, and the osmotic pressure that selected concentration produces is greater than and equals antigravity height; Described salting liquid selects Nacl, NaNO
3or KNO
3be dissolved in water and be prepared from.
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|---|---|---|---|
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| CN201510522616.XA CN105042677B (en) | 2015-08-24 | 2015-08-24 | A kind of heating plant and heat supply method of solar energy antigravity Natural Circulation |
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Cited By (2)
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| CN110330067A (en) * | 2019-07-18 | 2019-10-15 | 华北电力大学 | A kind of vapo(u)rization system absorbing solar energy based on foam metal body |
| CN110542338A (en) * | 2019-08-02 | 2019-12-06 | 北京空间飞行器总体设计部 | Osmotic pressure driven two-phase fluid loop |
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| CN105042677B (en) | 2017-11-28 |
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