CN104456987A - Solar heat storing-releasing system - Google Patents
Solar heat storing-releasing system Download PDFInfo
- Publication number
- CN104456987A CN104456987A CN201410799116.6A CN201410799116A CN104456987A CN 104456987 A CN104456987 A CN 104456987A CN 201410799116 A CN201410799116 A CN 201410799116A CN 104456987 A CN104456987 A CN 104456987A
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- CN
- China
- Prior art keywords
- salt
- heat
- storage tank
- oil
- fused salt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
Provided is a solar heat storing-releasing system. Solid fused salt is molten in a salt melting tank and then enters a cold fused salt storing tank through a molten salt conveying pump. Low-temperature molten salt in the cold fused salt storing tank enters a molten salt-heat conducting oil heat exchanger through a cold fused salt conveying pump, heat exchanging with high-temperature oil conducting oil is carried out, and after heat exchanging, the molten salt enters a hot molten storing tank for heat storing. On the contrary, high-temperature molten salt in the hot molten storing tank is pumped into the molten salt-heat conducting oil heat exchanger through a hot molten salt conveying pump, heat exchanging with low-temperature heat conducting oil is carried out, and after heat exchanging, the molten salt enters the cold fused salt storing tank for heat releasing. The solar heat storing-releasing system is wide in application range, influence from day-night alternating and whether is avoided, when light is sufficient, heat storing is carried out, when light is insufficient, heat releasing is carried out, high-temperature heat conducting oil can be provided continuously and efficiently, and the fact that production working with high-temperature heat conducting oil as a heat source is carried out stably and smoothly is guaranteed. The system can be used for steam power generation, domestic water heating, winter heating or industrial raw material heating and the like, and economy is high.
Description
Technical field
The invention belongs to solar energy heat utilization technical field, particularly relate to a kind of solar energy and store hot systems.
Background technology
As everyone knows, compared with the new forms of energy such as wind energy, water energy, tide energy, the utilization of solar energy is hardly by the restriction of region, and because sunshine is ubiquitous, as long as there is the place of illumination, just having solar energy can utilize.
Present stage, for the solar thermal utilization of solar energy, in every field, practical application is come, and comprises and directly utilizes sunshine to carry out photovoltaic generation, or utilize solar heat to generate electricity, or solar heat output is used it for anything else.
But, the acquisition of solar heat can be subject to region, the impact of the factor such as weather and day and night change, dispersiveness can be had, randomness and intermittent deficiency, now, the output of solar heat also can be subject to dispersiveness, randomness and intermittent impact, therefore, person skilled is in order to reduce the impact of these unfavorable factors on actual production, devise all storage and the delivery system that are used for solar heat, but in actual use, thermal effect or economy are not very desirable from storing, therefore, need a kind of economy badly high, and the system schema storing solar heat of stability and high efficiency can be realized.
Summary of the invention
For prior art Problems existing, the invention provides a kind of solar energy and store hot systems, economy high and can stability and high efficiency store solar heat.
To achieve these goals, the present invention adopts following technical scheme: a kind of solar energy stores hot systems, comprise sloppy heat salt storage tank, hot melt salt storage tank, sloppy heat salt delivery pump, hot melt salt delivery pump, change salt delivery pump, change salt cellar and fused salt-heat-condutive oil heat exchanger, describedization salt cellar is connected with sloppy heat salt storage tank by changing salt delivery pump, sloppy heat salt storage tank is connected with the fused salt heat exchanging chamber of fused salt-heat-condutive oil heat exchanger by sloppy heat salt delivery pump, and the fused salt heat exchanging chamber of fused salt-heat-condutive oil heat exchanger is connected with hot melt salt storage tank by hot melt salt delivery pump; The conduction oil heat-exchanging tube bundle of described fused salt-heat-condutive oil heat exchanger, its one end is connected with the conduction oil oil feed line of conduction oil solar energy heating field, and the other end is connected with the conduction oil return line of conduction oil solar energy heating field; Store low-temperature molten salt in described sloppy heat salt storage tank, in hot melt salt storage tank, store high-temperature molten salt; Conduction oil is filled with in the conduction oil heat-exchanging tube bundle of described fused salt-heat-condutive oil heat exchanger and in the thermal conductive oil pipeline of conduction oil solar energy heating field.
Described sloppy heat salt storage tank and sloppy heat salt delivery pump, hot melt salt storage tank and hot melt salt delivery pump are divided into high hot group and low-heat group two cover.
Described fused salt adopts inorganic nitrate mixture, by the NaNO of 60%
3and the KNO of 40%
3mix.
Described conduction oil adopts the eutectic mixture of the Biphenyl Ether of 73.5% and the biphenyl of 26.5%.
Pollute or characteristic changing after moisture absorption to prevent fused salt, the fused salt top in described sloppy heat salt storage tank, hot melt salt storage tank is provided with nitrogen bus-bar, fused salt and extraneous air is completely cut off by nitrogen bus-bar.
In order to prevent the fused salt crystallization in sloppy heat salt storage tank, hot melt salt storage tank, in described sloppy heat salt storage tank, hot melt salt storage tank, all retaining electric heater being installed, outside the tank body of sloppy heat salt storage tank, hot melt salt storage tank, being equipped with electric-heating belt.
Described fused salt-heat-condutive oil heat exchanger adopts floating head type heat exchanger, tube coil type heat exchanger or plate fin type heat exchanger.
During in order to ensure system shutdown, the conduction oil in fused salt-heat-condutive oil heat exchanger can be discharged smoothly, and the tube side of described fused salt-heat-condutive oil heat exchanger has gradient.
Beneficial effect of the present invention:
It is applied widely that solar energy of the present invention stores hot systems, not by day alternates with night and the impact of weather, heat accumulation is carried out when illumination is sufficient, heat release is carried out when illumination is not enough, high temperature heat conductive oil can be provided efficiently continually and steadily, ensure to be that the production operation of thermal source can be stablized and carried out smoothly with high temperature heat conductive oil.The present invention may be used for the aspects such as steam-electric power, domestic hot-water, winter heating or raw material of industry heating, and economy is high.
Accompanying drawing explanation
Fig. 1 is that a kind of solar energy of the present invention stores hot systems structure principle chart;
In figure, 1-sloppy heat salt storage tank, 2-hot melt salt storage tank, 3-sloppy heat salt delivery pump, 4-hot melt salt delivery pump, 5-change salt delivery pump, 6-change salt cellar, 7-fused salt-heat-condutive oil heat exchanger, 8-conduction oil solar energy heating field.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
As shown in Figure 1, a kind of solar energy stores hot systems, comprise sloppy heat salt storage tank 1, hot melt salt storage tank 2, sloppy heat salt delivery pump 3, hot melt salt delivery pump 4, change salt delivery pump 5, change salt cellar 6 and fused salt-heat-condutive oil heat exchanger 7, describedization salt cellar 6 is connected with sloppy heat salt storage tank 1 by changing salt delivery pump 5, sloppy heat salt storage tank 1 is connected with the fused salt heat exchanging chamber of fused salt-heat-condutive oil heat exchanger 7 by sloppy heat salt delivery pump 3, and the fused salt heat exchanging chamber of fused salt-heat-condutive oil heat exchanger 7 is connected with hot melt salt storage tank 2 by hot melt salt delivery pump 4; The conduction oil heat-exchanging tube bundle of described fused salt-heat-condutive oil heat exchanger 7, its one end is connected with the conduction oil oil feed line of conduction oil solar energy heating field 8, and the other end is connected with the conduction oil return line of conduction oil solar energy heating field 8; Store low-temperature molten salt in described sloppy heat salt storage tank 1, in hot melt salt storage tank 2, store high-temperature molten salt; Conduction oil is filled with in the conduction oil heat-exchanging tube bundle of described fused salt-heat-condutive oil heat exchanger 7 and in the thermal conductive oil pipeline of conduction oil solar energy heating field 8.
Described sloppy heat salt storage tank 1 is divided into high hot group and low-heat group two cover with sloppy heat salt delivery pump 3, hot melt salt storage tank 2 with hot melt salt delivery pump 4.
Described fused salt adopts inorganic nitrate mixture, by the NaNO of 60%
3and the KNO of 40%
3mix.
Described conduction oil adopts the eutectic mixture of the Biphenyl Ether of 73.5% and the biphenyl of 26.5%.
Pollute or characteristic changing after moisture absorption to prevent fused salt, the fused salt top in described sloppy heat salt storage tank 1, hot melt salt storage tank 2 is provided with nitrogen bus-bar, fused salt and extraneous air is completely cut off by nitrogen bus-bar.
In order to prevent the fused salt crystallization in sloppy heat salt storage tank 1, hot melt salt storage tank 2, in described sloppy heat salt storage tank 1, hot melt salt storage tank 2, all retaining electric heater being installed, outside the tank body of sloppy heat salt storage tank 1, hot melt salt storage tank 2, being equipped with electric-heating belt.
Described fused salt-heat-condutive oil heat exchanger 7 adopts floating head type heat exchanger, tube coil type heat exchanger or plate fin type heat exchanger.
During in order to ensure system shutdown, the conduction oil in fused salt-heat-condutive oil heat exchanger 7 can be discharged smoothly, and the tube side of described fused salt-heat-condutive oil heat exchanger 7 has gradient.
Illustrate below in conjunction with accompanying drawing and of the present inventionly once store thermal process:
First, by in adding of solid fused salt salt cellar 6, by electric heater or steam(-)coil, solid fused salt is heated again, until solid fused salt melts, when temperature of molten salt reaches 260 DEG C, change salt to terminate, pump in sloppy heat salt storage tank 1 by changing salt delivery pump 5 by the fused salt changed in salt cellar 6, the fused salt now in sloppy heat salt storage tank 1 is low-temperature molten salt.In order to ensure that in sloppy heat salt storage tank 1, low-temperature molten salt crystallization does not occur, must control fused salt not low with 260 DEG C, the temperature recorded once the arbitrary point for measuring temperature on sloppy heat salt storage tank 1 is lower than 260 DEG C, and corresponding muff heater just starts immediately, to control the temperature of fused salt.Why select by the NaNO of 60%
3and the KNO of 40%
3the fused salt mixed, be because it has that cost is low, security is high and the advantage such as environmental sound, and have good thermal storage performance, the specific heat capacity of this kind of fused salt is 1502J/kgK, and crystalline temperature is 223 ~ 238 DEG C.And why conduction oil chooses the eutectic mixture of the Biphenyl Ether of 73.5% and the biphenyl of 26.5%, because its maximum operation (service) temperature can reach 400 DEG C, and the usual maximum operation (service) temperature of the mineral oil that traditional conduction oil adopts is only 320 DEG C, and in the present invention, the design maximum operation (service) temperature of conduction oil is 393 DEG C.
When the illumination of conduction oil solar energy heating field 8 is sufficient, start sloppy heat salt delivery pump 3, low-temperature molten salt in sloppy heat salt storage tank 1 is pumped in fused salt-heat-condutive oil heat exchanger 7, carry out the heat exchange between low-temperature molten salt and high temperature heat conductive oil, fused salt after heat exchange completes can enter in hot melt salt storage tank 2 and store, and the fused salt now in hot melt salt storage tank 2 is high-temperature molten salt.The object of this process is stored by high-temperature molten salt by heat unnecessary in conduction oil, in case of need.
When conduction oil solar energy heating field 8 is because of night or weather reason etc., when sufficient illumination cannot be provided, the normal supply of high temperature heat conductive oil can not be ensured, this is normally the carrying out of actual production operation of thermal source by directly affecting with high temperature heat conductive oil, now start hot melt salt delivery pump 4, high-temperature molten salt in hot melt salt delivery pump 4 is pumped in fused salt-heat-condutive oil heat exchanger 7, carry out the heat exchange between high-temperature molten salt and low temperature conduction oil, fused salt after heat exchange completes can enter in sloppy heat salt storage tank 1 and store, and the fused salt now in sloppy heat salt storage tank 1 is low-temperature molten salt.The object of this process is that the heat stored in high-temperature molten salt is returned to conduction oil, heat low temperature conduction oil whereby, and as thermal source, can continue to support actual production operation by the conduction oil that high-temperature molten salt heats, ensure that the stable of actual production operation carries out smoothly.
Scheme in embodiment is also not used to limit scope of patent protection of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and is all contained in the scope of the claims of this case.
Claims (8)
1. a solar energy stores hot systems, it is characterized in that: comprise sloppy heat salt storage tank, hot melt salt storage tank, sloppy heat salt delivery pump, hot melt salt delivery pump, change salt delivery pump, change salt cellar and fused salt-heat-condutive oil heat exchanger, describedization salt cellar is connected with sloppy heat salt storage tank by changing salt delivery pump, sloppy heat salt storage tank is connected with the fused salt heat exchanging chamber of fused salt-heat-condutive oil heat exchanger by sloppy heat salt delivery pump, and the fused salt heat exchanging chamber of fused salt-heat-condutive oil heat exchanger is connected with hot melt salt storage tank by hot melt salt delivery pump; The conduction oil heat-exchanging tube bundle of described fused salt-heat-condutive oil heat exchanger, its one end is connected with the conduction oil oil feed line of conduction oil solar energy heating field, and the other end is connected with the conduction oil return line of conduction oil solar energy heating field; Store low-temperature molten salt in described sloppy heat salt storage tank, in hot melt salt storage tank, store high-temperature molten salt; Conduction oil is filled with in the conduction oil heat-exchanging tube bundle of described fused salt-heat-condutive oil heat exchanger and in the thermal conductive oil pipeline of conduction oil solar energy heating field.
2. a kind of solar energy according to claim 1 stores hot systems, it is characterized in that: described sloppy heat salt storage tank and sloppy heat salt delivery pump, hot melt salt storage tank and hot melt salt delivery pump are divided into high hot group and low-heat group two cover.
3. a kind of solar energy according to claim 1 stores hot systems, it is characterized in that: described fused salt adopts inorganic nitrate mixture, by the NaNO of 60%
3and the KNO of 40%
3mix.
4. a kind of solar energy according to claim 1 stores hot systems, it is characterized in that: described conduction oil adopts the eutectic mixture of the Biphenyl Ether of 73.5% and the biphenyl of 26.5%.
5. a kind of solar energy according to claim 1 stores hot systems, pollute or characteristic changing after moisture absorption to prevent fused salt, it is characterized in that: the fused salt top in described sloppy heat salt storage tank, hot melt salt storage tank is provided with nitrogen bus-bar, fused salt and extraneous air is completely cut off by nitrogen bus-bar.
6. a kind of solar energy according to claim 1 stores hot systems, in order to prevent the fused salt crystallization in sloppy heat salt storage tank, hot melt salt storage tank, it is characterized in that: in described sloppy heat salt storage tank, hot melt salt storage tank, all retaining electric heater is installed, outside the tank body of sloppy heat salt storage tank, hot melt salt storage tank, be equipped with electric-heating belt.
7. a kind of solar energy according to claim 1 stores hot systems, it is characterized in that: described fused salt-heat-condutive oil heat exchanger adopts floating head type heat exchanger, tube coil type heat exchanger or plate fin type heat exchanger.
8. a kind of solar energy according to claim 1 stores hot systems, and during in order to ensure system shutdown, the conduction oil in fused salt-heat-condutive oil heat exchanger can be discharged smoothly, it is characterized in that: the tube side of described fused salt-heat-condutive oil heat exchanger has gradient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799116.6A CN104456987A (en) | 2014-12-18 | 2014-12-18 | Solar heat storing-releasing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410799116.6A CN104456987A (en) | 2014-12-18 | 2014-12-18 | Solar heat storing-releasing system |
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| Publication Number | Publication Date |
|---|---|
| CN104456987A true CN104456987A (en) | 2015-03-25 |
Family
ID=52903447
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|---|---|---|---|
| CN201410799116.6A Pending CN104456987A (en) | 2014-12-18 | 2014-12-18 | Solar heat storing-releasing system |
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| CN (1) | CN104456987A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201579A (en) * | 2015-10-16 | 2015-12-30 | 上海晶电新能源有限公司 | Supercritical carbon dioxide power generation system based on secondary reflection condensation heat-absorption technique |
| CN105238365A (en) * | 2015-11-03 | 2016-01-13 | 百吉瑞（天津）新能源有限公司 | Fused salt initial fusion and dormancy solidification prevention and resuscitation system and use method thereof |
| CN107144028A (en) * | 2017-04-01 | 2017-09-08 | 中国科学院广州能源研究所 | A kind of Solar use method for separating out solid heat storage |
| ES2961013R1 (en) * | 2021-06-23 | 2024-04-11 | Beijing Lanhaiyineng New Energy Group Co Ltd | A fused salt thermal energy storage power plant salt fusion system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201579A (en) * | 2015-10-16 | 2015-12-30 | 上海晶电新能源有限公司 | Supercritical carbon dioxide power generation system based on secondary reflection condensation heat-absorption technique |
| CN105238365A (en) * | 2015-11-03 | 2016-01-13 | 百吉瑞（天津）新能源有限公司 | Fused salt initial fusion and dormancy solidification prevention and resuscitation system and use method thereof |
| CN105238365B (en) * | 2015-11-03 | 2021-03-09 | 百吉瑞（天津）新能源有限公司 | Fused salt initial melting and dormancy anti-condensation and resuscitation system and use method thereof |
| CN107144028A (en) * | 2017-04-01 | 2017-09-08 | 中国科学院广州能源研究所 | A kind of Solar use method for separating out solid heat storage |
| CN107144028B (en) * | 2017-04-01 | 2019-06-14 | 中国科学院广州能源研究所 | A kind of Solar use method that solid heat storage is precipitated |
| ES2961013R1 (en) * | 2021-06-23 | 2024-04-11 | Beijing Lanhaiyineng New Energy Group Co Ltd | A fused salt thermal energy storage power plant salt fusion system |
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Application publication date: 20150325 |