CN104235929A - Heating system using solar energy and heat stored by fused salt - Google Patents
Heating system using solar energy and heat stored by fused salt Download PDFInfo
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- CN104235929A CN104235929A CN201410494433.7A CN201410494433A CN104235929A CN 104235929 A CN104235929 A CN 104235929A CN 201410494433 A CN201410494433 A CN 201410494433A CN 104235929 A CN104235929 A CN 104235929A
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- fused salt
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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
Abstract
The invention discloses a heating system using solar energy and heat stored by fused salt. A large-area solar heat collector and a high-capacity heat preservation water storage tank are used for storing solar heat energy; by the adoption of the characteristic that salt fusing liquid is high in heat storage density within a unit volume and the full use of valley low-price power at night for storing the heat energy, the heating system adopts a static salt fusing tank and an electric heater to directly heat the salt fusing liquid in the salt fusing liquid; by virtue of a method for indirect heat exchange through a heat insulation layer, the salt fusing liquid is more convenient and safer to heat, and the manufacturing cost is extremely low; a super-audio sensing heating unit is used as an auxiliary heater for heating; the super-audio sensing heating unit automatically adjusts the heating power according to the water temperature, so that the heating speed is high, and the heat efficiency is high. The heating system using solar energy and heat stored by the fused salt makes use of the solar energy, adopts the fused salt to store the valley low-price electric energy and adopts a high-efficiency and energy-saving super-audio sensing heating technology, so that the heating system is environment-friendly and energy-saving, lowers the heating expenses and benefits the nation and the people, the heat energy is comprehensively used, and the heating system is safer and more reliable.
Description
Technical field
The present invention relates to solar energy and molten salt energy-storage comprehensive utilization heating technical field, especially relate to a kind of heating system of solar molten salt heat accumulation.
Background technology
The heat supply in winter of present northern area, the overwhelming majority still adopt coal-burning boiler to heat; The CO of burning and exhausting
2the contaminated environment that gas is serious, employing is burnt away the refuse, heated by natural gas; Pollute the environment equally, adopt electrically heated boiler, many deficiencies, the fused salt thermal storage and energy accumulation such as the thermal efficiency is low, use cost is high; Be an emerging energy storage technology, current molten salt energy-storage generally adopts; High temperature salt cellar, low temperature salt cellar, heat exchanger, electric heater, circulating pump, cyclic high-temperature fused salt liquid, carry out heating heat exchange; Equipment manufacturing cost is high and all pipeline equipments need preheating insulation, keep liquid fused salt temperature to be not less than 150 DEG C, not so the existing possibility of solidifying of liquid fused salt, and circulation 500 DEG C of high-temp liquid heat transmission equipments, apparatus, materials, in current practical application, also have a lot of problem, and high temperature heat-exchange system is very complicated, technical requirement is very high, invest the current unsurmountable shortcomings such as huge.
A kind of heating system of solar molten salt heat accumulation, adopt solar energy in large area heat collector, Large Copacity heat preservation storage water tank stores solar thermal energy, adopt the feature that fused salt liquid storage density is high, make full use of the cheap power storage heat energy of night dip, the present invention adopts static fused salt tank, electric heater directly heats at fused salt liquid internal, the method of indirect heat exchange is carried out by insulating layer, make the heating of fused salt liquid more convenient, and safety, cost is low, superaudio eddy-current heating unit is adopted to heat as auxiliary heating, superaudio eddy-current heating adjusts heating power automatically according to water temperature, firing rate is fast, the thermal efficiency is high, utilize solar energy source, fused salt is utilized to store low ebb cheap electric energy, utilize energy-efficient superaudio induction heating technique, environmental protection and energy saving, reduce heating cost, benefit the nation and the people.
Summary of the invention
The object of the invention is for current heating system; Contaminated environment, waste energy, equipment is complicated, the high deficiency of heating cost, and the heating system of a kind of solar molten salt heat accumulation provided.
The technical solution adopted for the present invention to solve the technical problems is, according to field condition license, adopt solar energy in large area heat collector, water can be brought up to 60-80 DEG C at fine warm weather, solar thermal collector, adopt the heat preservation storage water tank of larger volume, to store a large amount of heat energy, due to the feature that fused salt liquid heat accumulation energy density is high, thermal conversion efficiency is high, adopt fused salt liquid static mode of heating, fused salt tank and electrical heating and heat exchange coil are integrated device, simplify fused salt heating, circulation, the traditional mode of heat exchange, fused salt tank body is a cylindrical steel structure, inwall and block base one, bottom floor height alumina-silica firebrick, inner splendid attire fused salt material, fused salt tank body outside is buffer compartment thermosphere, adopt seamless steel pipe coiling as hot water heat exchange layer, heat exchange layer outside Plate Welding heat exchange layer tank body, the thick alumina silicate Nomex of heat exchange layer tank body outer wrap one deck 50mm, alumina silicate Nomex outer wrap 3 layers of thick rock cotton board of 50mm, 80-100mm gap is left to fused salt tank internal diameter of outer cover circumference in rock cotton board outside, pour into polyurethane foam material, to guarantee the heat insulation effect of fused salt tank, fused salt pot bottom adopts the insulation material the same with circumference, and fused salt tank top cover installs hyperthermia radiation heating tube, hyperthermia radiation heating tube shell adopts high temperature resistant, corrosion resistant stainless steel tube, hyperthermia radiation heating tube straight cutting heats to fused salt liquid bottom, and fused salt cover top arranges charge door, temperature sensor socket, respiratory ventilation mouth, hyperthermia radiation heating tube lead-in wires etc., be incubated with multilayer insulant afterwards, fused salt adopts 3 component KNO
3/ NaNO
2/ NaNO
353: 40: 7 proportionings mixing, the energising of hyperthermia radiation heating tube is carried out heating when using, fused salt progressively melts, make fused salt liquid reach requirement liquid level by interpolation fused salt, during night dip electricity price, fused salt liquid is heated to 500 DEG C, when peak of power consumption, by water pump circulating solar energy storage tank water, by conversion valve, by the heat exchanger tube of fused salt tank heat exchange layer, water is heated to the temperature that heating requires and enters heating pipe network, when liquid fused salt temperature drops to 180 DEG C, system is automatically converted to superaudio eddy-current heating unit and carries out heating, and superaudio eddy-current heating unit according to storage tank water temperature, automatically adjust heating power, ensures that heating water temperature meets the requirements.
Beneficial effect of the present invention is: owing to adopting solar energy in large area heat collector, Large Copacity heat preservation storage water tank, can mass storage solar thermal energy, adopt the feature that fused salt liquid unit volume storage density is high, make full use of the cheap power storage heat energy of night dip, static fused salt tank liquid internal is adopted directly to heat, indirect heat exchange is carried out by insulating layer, structure is simple, easy to operate, and safety, cost is low, adopt superaudio eddy-current heating unit, automatic adjustment heating power, environmental protection and energy saving, reduce heating cost, benefit the nation and the people, heat integration is more safe and reliable.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing 1 is structure chart of the present invention.
Accompanying drawing 2 is profiles of fused salt tank of the present invention.
In figure: 1. solar thermal collector, 2. solar storage water tank, 3. superaudio eddy-current heating unit, 4. fused salt tank, 5. heat cycles pump, 6. solar heat water-circulating pump, 7. heat conversion electromagnetic valve, 8. radiator, 9. fused salt electrical heating controller, 10. hot duct, 11. water backs, 12. solar energy circulating lines, 13. soak cycles pumps, 14. soak cycles magnetic valves, 15. radiation heating tube lead-in wires, 16. fused salt tank upper covers, 17. radiation heating tubes, 18. fused salt tank shells, 19. heat-insulation layers, 20. fused salt tank heat exchange layer tank bodies, 21. heat exchange coils, 22. fused salt liquid, 23. fused salt tanks, 24. fireproof brick inner lining layers, 25. fused salt tank water inlet pipes, 26. fused salt tank outlet pipes, 27. fused salt tank temperature sensors, 28. fused salt tank charge doors, 29. fused salt tank passages, 30. solar storage water tank expansion drums.
Detailed description of the invention
The present invention includes in accompanying drawing: by solar thermal collector (1), solar storage water tank (2), superaudio eddy-current heating unit (3), fused salt tank (4), heat cycles pump (5), solar heat water-circulating pump (6), heating conversion electromagnetic valve (7), radiator (8), fused salt electrical heating controller (9), hot duct (10), water back (11), solar energy circulating line (12), soak cycles pump (13), be interconnected composition between soak cycles magnetic valve (14), wherein fused salt tank (4) is by fused salt tank shell (18), heat-insulation layer (19), fused salt tank heat exchange layer tank body (20), heat exchange coil (21), fused salt tank (23), fireproof brick inner lining layer (24) combines composition, and fused salt tank shell (18) adopts 0.5 steel plate to make, the alumina silicate acupuncture cotton that heat-insulation layer (19) internal layer adopts high temperature resistant 50mm thick, the rock wool that middle employing 3 layers of 50mm is thick, the space of 80-100mm is left, filling polyurethane foamed material after fixing and between fused salt tank shell (18) inwall circumference, to ensure heat insulation effect, fused salt pot bottom adopts the insulation material the same with circumference, fused salt tank heat exchange layer tank body (20) is by 3mm steel plate welding production, heat exchange coil (21) is coiled by heat-resisting seamless steel pipe and makes, fused salt tank (23) is by 6mm steel plate welding production, fireproof brick inner lining layer (24) is formed by the brick base of high aluminium-silica fireproof, fused salt tank upper cover (16) is fixed on fused salt tank (4) top, and fused salt tank upper cover (16) is fixing radiation heating tube (17) above, fused salt tank temperature sensor (27), fused salt tank upper cover (16) arranges fused salt tank charge door (28), and fused salt tank passage (29), fused salt tank upper cover (16) is incubated by the insulation material identical with tank body, and radiation heating tube (17) is made up of heating tube core and heating muff, heating muff adopts the stainless steel tube of corrosion-and high-temp-resistant to make, and sleeve pipe is by top straight cutting fused salt liquid bottom, directly heat at fused salt liquid internal, heater concentrates in the middle part of under heating sleeve pipe, to improve the efficiency of heating surface, the fused salt liquid (22) in fused salt tank (4), night dip cheap electric energy is utilized to heat, automatically controlled by fused salt electrical heating controller (9), make the temperature of fused salt liquid (22) remain on 500 DEG C, there are fused salt tank water inlet pipe (25) and the fused salt tank outlet pipe (26) of connection heat exchange coil (21) in fused salt tank (4) side, during system cloud gray model, solar thermal collector (1) progressively heats the water in heat collector, by solar heat water-circulating pump (6), hot water circuit is stored, during peak of power consumption to solar storage water tank (2), by heat cycles pump (5) by heating conversion electromagnetic valve (7), water back (11), the fused salt tank water inlet pipe (25) of fused salt tank (4), and fused salt tank outlet pipe (26), after heat exchange coil (21) heating, by the radiator (8) that hot duct (10) supply user warms oneself, water after heat release is back to solar storage water tank (2), solar storage water tank (2) adopts double-layer plate manufacture, the insulation of interlayer perfusion polyurethane foaming material, top arranges expansion tank, to keep the stable level of solar storage water tank (2), heating adds to be hankered, when the temperature of fused salt liquid (22) drops to 180 DEG C, for prevention fused salt liquid (22) is solidified, heat exchange is stopped to use, by heating conversion electromagnetic valve (7), be converted to superaudio eddy-current heating unit (3) to heat, due to the water in solar storage water tank (2), there is certain temperature, superaudio eddy-current heating unit (3) is according to the temperature of water inlet, automatic adjustment induction heating power, heating water temperature is made to reach designing requirement, superaudio eddy-current heating unit (3) adopts superaudio inductive heating principle, firing rate is fast, the efficiency of heating surface is high, environmental protection and energy saving, in fused salt tank (4) accumulation of heat, and not between the operating period, for preventing the boiling of the water in heat exchange coil (21) dry combustion method, arranging the circulated at low velocity pipeline be made up of soak cycles pump (13), soak cycles magnetic valve (14), the hot water circuit in heat exchange coil (21) to solar storage water tank (2), the normal accumulation of heat ensureing fused salt tank (4).
The present invention makes full use of solar energy source, stores a large amount of heat energy, owing to adopting storage tank, the thermal loss of band heat-insulation layer little, the mode that molten salt energy-storage device adopts the good static fused salt tank of insulation and fused salt liquid internal directly heats, heat exchange adopts insulating layer indirect heat exchange, compares other fused salt heating occupation mode, has incomparable advantage.
Claims (7)
1. a heating system for solar molten salt heat accumulation, is characterized in that, by solar thermal collector (1), solar storage water tank (2), superaudio eddy-current heating unit (3), fused salt tank (4), heat cycles pump (5), solar heat water-circulating pump (6), heating conversion electromagnetic valve (7), radiator (8), fused salt electrical heating controller (9), hot duct (10), water back (11), solar energy circulating line (12), soak cycles pump (13), composition is interconnected between soak cycles magnetic valve (14), wherein fused salt tank (4) is by fused salt tank shell (18), heat-insulation layer (19), fused salt tank heat exchange layer tank body (20), heat exchange coil (21), fused salt tank (23), fireproof brick inner lining layer (24) combines composition.
2. the heating system of a kind of solar molten salt heat accumulation according to claim 1, it is characterized in that: fused salt tank shell (18) adopts 1mm steel plate to make, heat-insulation layer (19) internal layer adopts the high temperature resistant alumina silicate acupuncture cotton that 50mm is thick, the rock wool that middle employing 3 layers of 50mm is thick, the space of 80-100mm is left after fixing and between fused salt tank shell (18) inwall circumference, filling polyurethane foamed material, fused salt pot bottom adopts the insulation material the same with circumference, wherein fused salt tank heat exchange layer tank body (20) is by 3mm steel plate welding production, heat exchange coil (21) is coiled by heat-resisting seamless steel pipe and makes, fused salt tank (23) is by 6mm steel plate welding production, fireproof brick inner lining layer (24) is formed by the brick base of high aluminium-silica fireproof, fused salt tank upper cover (16) is fixed on fused salt tank (4) top, fused salt tank upper cover (16) is fixing radiation heating tube (17) above, fused salt tank temperature sensor (27), fused salt tank upper cover (16), fused salt tank charge door (28) is set, and fused salt tank passage (29), fused salt tank upper cover (16) is incubated by the insulation material identical with tank body.
3. the heating system of a kind of solar molten salt heat accumulation according to claim 1, is further characterized in that: radiation heating tube (17) is by heating tube core and heating muff forms, heating muff adopts the stainless steel tube of corrosion-and high-temp-resistant to make, directly heat at fused salt liquid internal.
4. the heating system of a kind of solar molten salt heat accumulation according to claim 1, is further characterized in that: utilize night dip cheap electric energy to carry out heating, automatically being controlled by fused salt electrical heating controller (9); The temperature of fused salt liquid (22) is made to remain on 500 DEG C.
5. the heating system of a kind of solar molten salt heat accumulation according to claim 1, is further characterized in that: fused salt tank (4); There are fused salt tank water inlet pipe (25) and the fused salt tank outlet pipe (26) of connection heat exchange coil (21) in side.
6. the heating system of a kind of solar molten salt heat accumulation according to claim 1, is further characterized in that: solar storage water tank (2) adopts double-layer plate manufacture, the insulation of interlayer perfusion polyurethane foaming, top to arrange expansion tank.
7. the heating system of a kind of solar molten salt heat accumulation according to claim 1, is further characterized in that: for preventing the boiling of the water in heat exchange coil (21) dry combustion method, arranging the circulated at low velocity pipeline be made up of soak cycles pump (13), soak cycles magnetic valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494433.7A CN104235929A (en) | 2014-09-24 | 2014-09-24 | Heating system using solar energy and heat stored by fused salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410494433.7A CN104235929A (en) | 2014-09-24 | 2014-09-24 | Heating system using solar energy and heat stored by fused salt |
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| Publication Number | Publication Date |
|---|---|
| CN104235929A true CN104235929A (en) | 2014-12-24 |
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ID=52224528
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410494433.7A Pending CN104235929A (en) | 2014-09-24 | 2014-09-24 | Heating system using solar energy and heat stored by fused salt |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764119A (en) * | 2017-11-22 | 2018-03-06 | 黄善清 | A kind of regenerative apparatus of gas and fused salt contact heat-exchanging |
| CN107889301A (en) * | 2017-12-15 | 2018-04-06 | 重庆方盛净化设备有限公司 | The vertical electric heating tube of double shielding pipe |
| CN109029037A (en) * | 2018-06-27 | 2018-12-18 | 芜湖盘云石磨新能源科技有限公司 | A kind of molten salt energy-storage power station |
| CN109323320A (en) * | 2018-11-22 | 2019-02-12 | 上海电气集团股份有限公司 | A kind of list tank fused salt heating system |
| CN110567305A (en) * | 2019-08-28 | 2019-12-13 | 诸城市桂冠机械有限公司 | High-efficiency electric energy accumulator |
| CN112629300A (en) * | 2020-11-19 | 2021-04-09 | 东北大学 | Combined cooling, heating and power system utilizing fused salt to store heat |
| CN113310224A (en) * | 2020-02-26 | 2021-08-27 | 中车四方车辆有限公司 | Solar electric heating water boiler system of rail transit train |
-
2014
- 2014-09-24 CN CN201410494433.7A patent/CN104235929A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764119A (en) * | 2017-11-22 | 2018-03-06 | 黄善清 | A kind of regenerative apparatus of gas and fused salt contact heat-exchanging |
| CN107764119B (en) * | 2017-11-22 | 2024-04-05 | 江苏中科智储科技有限公司 | Heat storage device for heat exchange by contact between gas and molten salt |
| CN107889301A (en) * | 2017-12-15 | 2018-04-06 | 重庆方盛净化设备有限公司 | The vertical electric heating tube of double shielding pipe |
| CN109029037A (en) * | 2018-06-27 | 2018-12-18 | 芜湖盘云石磨新能源科技有限公司 | A kind of molten salt energy-storage power station |
| CN109323320A (en) * | 2018-11-22 | 2019-02-12 | 上海电气集团股份有限公司 | A kind of list tank fused salt heating system |
| CN110567305A (en) * | 2019-08-28 | 2019-12-13 | 诸城市桂冠机械有限公司 | High-efficiency electric energy accumulator |
| CN113310224A (en) * | 2020-02-26 | 2021-08-27 | 中车四方车辆有限公司 | Solar electric heating water boiler system of rail transit train |
| CN113310224B (en) * | 2020-02-26 | 2022-11-04 | 中车四方车辆有限公司 | Solar electric heating water boiler system of rail transit train |
| CN112629300A (en) * | 2020-11-19 | 2021-04-09 | 东北大学 | Combined cooling, heating and power system utilizing fused salt to store heat |
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Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |