CN102852742B - Tower type solar thermal power generation system for heat absorber of vacuum heat absorption pipes - Google Patents
Tower type solar thermal power generation system for heat absorber of vacuum heat absorption pipes Download PDFInfo
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- CN102852742B CN102852742B CN201210316580.6A CN201210316580A CN102852742B CN 102852742 B CN102852742 B CN 102852742B CN 201210316580 A CN201210316580 A CN 201210316580A CN 102852742 B CN102852742 B CN 102852742B
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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
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention discloses a tower type solar thermal power generation system for a heat absorber of vacuum heat absorption pipes, which is characterized in that water/steam is taken a heat transfer fluid, and fusion salt is taken as a heat storage medium. The tower type solar thermal power generation system comprises a heliostat (1), a support tower (2), a heat absorber (3), a steam turbine (4), a generator (5), a deaerator (6), a condenser (7), a water feed pump (8), a high-temperature fusion salt storage tank (9), a low-temperature fusion salt storage tank (10), a water/steam-fusion salt heat exchanger (11), a fusion salt steam generator (12) and a control valve (13). The heat absorber (3) is formed by connecting the vacuum heat absorption pipes (18) in series and in parallel. According to the invention, the heliostat is arranged in a fan-shaped manner, a rectangular manner or a circumferential manner, the high-temperature and high-pressure overheating steam is obtained, and the solar thermal power generation system is suitable for a large installed capacity tower type solar thermal power generation station.
Description
Technical field
The present invention relates to a kind of tower-type solar thermal power generating system, particularly utilize the tower-type solar thermal power generating system that vacuum heat absorbing pipe is heat absorber.
Background technique
Solar energy is inexhaustible renewable energy sources, and the today of reduce year by year at fossil fuel, international energy situation is increasingly severe, developing solar energy is one of important channel of realizing energy supply diversification, assurance energy security.Tower type solar energy thermal power generation device basic principle is to utilize numerous heliostats, solar radiation is reflexed on the solar receiver being placed on tower, by heating working medium, produces superheated vapor or high temperature air, drives generator set, produces electric energy.High temperature solar heat absorber is the core component of tower type thermal generation system.Around technique, carry out many research abroad, mainly concentrated on the U.S., Spain, Germany, Israel, Australia, Korea S etc.The generating working medium that wherein adopts the solar heat power generation system of Rankine cycle is water vapor, by assemble the high fluence density solar energy obtaining through heliostat field, be converted into the high-quality water vapor that meets steam turbine operation, common technological approaches has two kinds of direct mode and indirect modes.Direct mode refers to solar energy collecting is obtained to high-quality steam to water/steam heat absorber, indirect mode refers to solar energy collecting to the heat absorber of non-device of working medium, as molten salt thermal absorber, air heat-absorbing device, sodium heat absorber, oily heat absorber etc., then obtain high-quality steam through heat-exchange apparatus.
Adopting the solar energy thermal-power-generating station that water/steam is working medium to change without second heat, have the simple and efficiency of system compared with advantages of higher, is that one of technical approach developing is all paid attention in countries in the world.European patent EP 2428999A1 discloses a kind of solar heat power generation system that utilizes natural circulation mode to obtain saturated vapour.US Patent No. 2008078378-A1 discloses water/steam heat absorber that a kind of steam generator and steam superheater are separately heated, wherein to have adopted volute be heat absorption tube to superheater, steam superheater is arranged in the lower region of optically focused radiant emittance of input, and steam generator is arranged in the higher region of optically focused radiant emittance of input.Patent WO20110303331A2 discloses a kind of tower-type solar thermal power generating system, its feature is for adopting water/steam heat absorber and molten salt thermal absorber, steam generator and the steam superheater of water/steam heat absorber are arranged apart, steam generator is arranged in the cavity in besieged city, outside of heat absorber, in chamber, arrange that steam superheater is to reduce the thermal loss of steam superheating process, molten salt thermal absorber is arranged in ground.Heliostat field is circumference, the solar radiation that part heliostat is assembled reflects again by lower trans secondary reflection face and assembles to being arranged in the molten salt thermal absorber on ground, part heliostat can be assembled solar radiation to steam superheater, and part heliostat can be assembled solar radiation to steam generator.
Summary of the invention
The object of the invention is to overcome that existing water/steam heat absorber thermal efficiency is low, high to focusing system required precision, the deficiency of poor stability, propose a kind of tower-type solar thermal power generating system that vacuum heat absorbing pipe is heat absorber of take.
Tower-type solar thermal power generating system of the present invention be take water, saturated vapour and superheated vapor as thermal fluid, includes capital equipment and the subsidiary engine equipment such as heliostat, support tower, heat absorber, regenerative system, steam turbine and generator, as pump etc.The present invention be take water, saturated vapour and superheated vapor as thermal fluid, and the high temperature and high pressure steam of acquisition can be directly used in steam turbine power generation, has avoided the use of intermediate heat transfer, has improved the thermal conversion efficiency of system.
Described heliostat is the optical block at tower type solar energy thermal power generation station.Heliostat be take support tower as with reference to being arranged in ground, and the arrangement mode of heliostat can fan-shapedly be arranged, rectangular arrangement or circumference, with assembling to heat absorber surface solar energy highly effective rate.
Described support tower is used for supporting heat absorber and pipe-line system thereof, conventionally by steel structure or reinforced concrete, is made.For the heliostat field of fan-shaped layout, support tower is arranged in fan-shaped heliostat field Yi Ce center, and the heliostat field support tower of arranging for circumference type is arranged in the center of heliostat field, and its arrangement principle is that to realize the annual light gathering efficiency of heliostat field the highest.
Described heat absorber is comprised of many vacuum heat absorbing pipes.Between many vacuum heat absorbing pipes, leave hole, in absorption sun optically focused energy flux of radiation direction, at least arrange that two vacuum pumping heat absorption tubes are to guarantee the abundant absorption of solar energy.Between many vacuum heat absorbing pipes, adopt and be welded to connect, can be for being connected in series or being connected in parallel according to the flow direction of thermal fluid.
Described vacuum heat absorbing pipe is the core heat absorbing element at solar energy thermal-power-generating station.Vacuum heat absorbing pipe is comprised of metal inner pipe, glass outer tube, glass-to-metal sealing ring etc., metal inner pipe is positioned at the internal layer of vacuum heat absorbing pipe, glass outer tube is positioned at the skin of vacuum heat absorbing pipe, the dead in line of metal inner pipe and glass outer tube, glass-to-metal sealing ring is positioned at the two end part of vacuum heat absorbing pipe, glass-to-metal sealing ring one end and metal inner pipe welding, one end and the welding of glass outer tube, the common cavity that forms of metal inner pipe outer wall and glass outer tube wall face and glass-to-metal sealing ring outer wall, extracting vacuum in this cavity, forms vacuum sandwich.The outer surface of metal inner pipe scribbles coating for selective absorption, possesses in sunlight spectral range and has higher absorptance, and in infrared band, have lower transmitting ratio.Many vacuum heat absorbing pipes can be realized and being connected in series by the welding to metal inner pipe, and the metal inner pipe of many vacuum heat absorbing pipes is welded and can realize being connected in parallel of vacuum heat absorbing pipe with header or main pipeline.Heat absorber is provided with upper and lower two headers, realizes the parallel connection between vacuum heat absorbing pipe.
Because vacuum heat absorbing pipe has higher photo-thermal conversion efficiency, compared with low light gathering radiant emittance in the situation that, just can obtain higher temperature, heat absorber can be arranged larger heat absorption area, can significantly reduce in heliostat field optically focused process the loss of overflowing on heat absorber surface, greatly reduce the requirement to heliostat tracking accuracy, thereby be conducive to reduce initial cost and the operating cost of heliostat field.Depending on the requirement of heat absorber outlet steam parameter, can arrange steam-water separator, steam-water separator is positioned in support tower, and steam-water separator is not accepted the heating of solar radiant energy.
Described regenerative system adopts fuse salt as heat storage medium, comprises the supplementary equipment such as low thermohaline storage tank, Yi Taishui/steam-fuse salt heat exchanger and fuse salt steam generator, pump for liquid salts and a valve of the high temp. salt storage tank of a higher fuse salt of storing temperature, a relatively low fuse salt of storing temperature.The steam side of water/steam-fuse salt heat exchanger is connected with steam turbine with heat absorber respectively by steam line, and the water side of water/steam-fuse salt heat exchanger is connected by pipeline with oxygen-eliminating device.The contiguous support tower of high temp. salt storage tank arranges to reduce the transmission thermal loss of superheated vapor.Water/steam-fuse salt heat exchanger, low thermohaline storage tank and fuse salt steam generator are arranged near high temp. salt storage tank, low thermohaline storage tank layout adjacent with high temp. salt storage tank, one side disposed adjacent water/steam-fuse salt heat exchanger of low thermohaline storage tank and high temp. salt storage tank, to reduce the Pipe transfer thermal loss of charging process, the opposite side disposed adjacent fuse salt steam generator of low thermohaline storage tank and high temp. salt storage tank, to reduce the Pipe transfer thermal loss of exothermic process.Regenerative system can be stabilized the fluctuation of solar energy and for the generating at solar energy deficiency or night, improve service hours.
Working procedure of the present invention is as follows:
The solar radiant energy of assembling through heliostat is projected on the heat absorber on support tower, heat absorber is comprised of many vacuum heat absorbing pipes, the difference of the difference of the Salar light-gathering radiant emittance receiving according to each vacuum heat absorbing pipe surface and the heat transfer characteristic of intraductal heat transfer fluid, water, steam water interface and steam are flowing in the metal inner pipe of vacuum heat absorbing pipe.The projection of overwhelming majority optically focused energy flux of radiation, through the glass outer tube of vacuum heat absorbing pipe, sees through to the outer surface that is coated with the metal inner pipe of coating for selective absorption, realizes dropping into efficient absorption and the low thermal radiation loss of solar radiant energy.By with metal inner pipe in mobile water/steam carry out convection heat exchange, realize solar energy to the conversion of water/steam thermal energy.Heat absorber outlet steam can directly be delivered in steam turbine and drive generator generating, also can deliver to water/steam-fuse salt heater heating and melting salt for accumulation of heat.When solar energy is not enough, the high-temperature fusion salt of regenerative system obtains superheated vapor through the heating of fuse salt steam generator and is delivered to the generating of steam turbine drive generator.Solar heat power generation system of the present invention is suitable for fan-shaped layout heliostat field and circumferential is arranged heliostat field, at electric motor power tower type solar energy thermal power generation station, has significant advantage.
Accompanying drawing explanation
Fig. 1 tower-type solar thermal power generating system of the present invention;
Fig. 2 direct steam generation formula of the present invention vacuum heat absorbing pipe water/steam heat absorber schematic diagram;
The vacuum heat absorbing pipe schematic diagram that Fig. 3 heat absorber of the present invention is used;
The A-A directional profile figure of Fig. 4 Fig. 2 of the present invention;
Fig. 5 water/steam heat absorber of the vacuum heat absorbing pipe with steam-water separator of the present invention schematic diagram;
In figure: 1 heliostat, 2 support towers, 3 heat absorbers, 4 steam turbine, 5 generators, 6 oxygen-eliminating devices, 7 vapour condenser, 8 feed water pumps, 9 high-temperature fusion salt storage tanks, 10 low temperature molten salt storage tanks, 11 water/steam-fuse salt heat exchanger, 12 fuse salt steam generators, 13 control valves, 14 optically focused energy flux of radiation, 15 feedwater, 16 superheated vapors, 17 fuse salts, 18 vacuum heat absorbing pipes, 19 water supplying tanks, 20 steam headers, 21 steam-water separators, 22 circulating water pump, 23 saturated vapours, 31 metal inner pipes, 32 glass outer tubes, 33 glass-to-metal sealing rings, 34 vacuum sandwichs, 35 coating for selective absorption.
Embodiment
Figure 1 shows that tower-type solar thermal power generating system of the present invention.This power generation system comprises capital equipment and the subsidiary engine equipment such as heliostat 1, support tower 2, heat absorber 3, regenerative system, steam turbine 4 and generator 5, as pump etc.Support tower 2 is benchmark of this power generation system, heliostat 1 is arranged in support tower 2 around, heat absorber 3 is positioned at the top of support tower 1, according to the flow direction of thermal fluid, feed water pump 8 is connected by pipeline with heat absorber 3 successively with oxygen-eliminating device 6, and feed water pump 8 can be positioned on support tower 2 or ground, and heat absorber 3 is connected by pipeline with steam turbine 4, generator 5 and steam turbine 4 adopts coupling to be fixedly connected with, and between steam turbine 5 and vapour condenser 7, by pipeline, is connected.The common regenerative system that forms of high-temperature fusion salt storage tank 9, low temperature molten salt storage tank 10, water/steam-fuse salt heat exchanger 11 and fuse salt steam generator 12, the fuse salt side of water/steam-fuse salt heat exchanger 11 is connected with low temperature molten salt storage tank 10 with high-temperature fusion salt storage tank 9 respectively by pipeline, the steam side of water/steam-fuse salt heat exchanger 11 is connected with steam turbine 5 with heat absorber 3 respectively by steam line, and the water side of water/steam-fuse salt heat exchanger 11 is connected with oxygen-eliminating device 6.Fuse salt steam generator 12 is connected with low temperature molten salt storage tank 10 with high-temperature fusion salt storage tank 9 respectively by pipeline.Control valve 13 regulates while being arranged on the pipeline of system for different operating modes operation.Optically focused energy flux of radiation 14 is assembled solar energy to be formed by heliostat 1, for being projected to the surface of heat absorber 3.Feedwater 15 is thermal fluids in system, by feed water pump 8, from oxygen-eliminating device 6, is pumped to and heat absorber 3, absorbs heat or by being pumped to and carrying out heat exchange fuse salt steam generator 12 from oxygen-eliminating device 6 by feed water pump 8.Superheated vapor 16 is the working medium that thermal fluid in system and pushing turbine 4 actings drive generators 5 generatings, and superheated vapor 16 produces or generation in fuse salt steam generator 12 in heat absorber 3.
The optically focused energy flux of radiation 14 of assembling through heliostat 1 is projected to the surface of heat absorber 3, heated the feedwater 15 from oxygen-eliminating device 6 pumpings by feed water pump 8, feedwater 15 is heated to be superheated vapor 16 and is transported to acting drive generator 5 generatings in steam turbine 4 in heat absorber 3, turbine discharge flows back to oxygen-eliminating device 6 after vapour condenser 7 condenses under feed water pump 8 effects, completes the direct superheated vapor 16 that produces of solar energy heating feedwater 15 and carries out power generation process.The superheated vapor 16 that heat absorber 3 produces also can flow in water/steam-fuse salt heat exchanger 11 of regenerative system and carry out heat exchange with the accumulation of heat working medium fuse salt 17 flowing out from low temperature molten salt storage tank 10, after heat exchange, fuse salt 17 is heated to be high-temperature fusion salt and is stored in high-temperature fusion salt storage tank 9, superheated vapor 16 is cooled to feedwater 15 and flows back to oxygen-eliminating device 6, continues to absorb heat as heat transfer medium pumped back heat absorber 3.When solar energy is not enough, regenerative system puts into operation, the fuse salt 17 flowing out from high-temperature fusion salt storage tank 9 through 9 heating of fuse salt steam generator from oxygen-eliminating device 6 through the feedwater 15 of feed water pump 8 pumpings to superheated vapor 16, superheated vapor 16 is transported to acting in steam turbine 4 and drives generator 5 generatings, turbine discharge flows back to oxygen-eliminating device 6 after vapour condenser 7 condenses under feed water pump 8 effects, completes the Independent Power Generation process of regenerative system.
Figure 2 shows that direct steam generation formula vacuum heat absorbing pipe water/steam heat absorber of the present invention, this heat absorber is comprised of many vacuum heat absorbing pipes 18, water supplying tank 19 and steam header 20.Steam header 20 is positioned at the top of heat absorber, water supplying tank 19 is positioned at the bottom of heat absorber, many vacuum heat absorbing pipes 18 adopt welding manner series connection to form vacuum heat absorbing pipe string, the bottom of vacuum heat absorbing pipe string and water supplying tank 19 are welded to connect, and the top of vacuum heat absorbing pipe string and steam header 20 are welded to connect.Series and parallel connections by vacuum heat absorbing pipe string connects and composes water/steam heat absorber of cavity type, flat or column type.
The structure of vacuum heat absorbing pipe 18 as shown in Figure 3, vacuum heat absorbing pipe 18 is comprised of metal inner pipe 31, glass outer tube 32 and glass-to-metal sealing ring 33, metal inner pipe 31 and the 33 one end welding of glass-to-metal sealing ring, glass outer tube 32 and 33 the other end welding of glass-to-metal sealing ring.31 of glass outer tube 32 and metal inner pipes are vacuum sandwich 34, the outer surface of metal inner pipe 31 scribbles coating for selective absorption 35, possess in sunlight spectral range and there is higher absorptance, and in infrared band, there is lower transmitting ratio, realization, to 32 lower radiation heat loss of the efficient absorption of solar energy and metal inner pipe 31 outer walls and glass outer tube, has guaranteed that heat absorber of the present invention can have the higher thermal efficiency.Many vacuum heat absorbing pipe 18 series connection formation sufficient lengths, vacuum heat absorbing pipe string sees through loss with at least two rows arrangement arranged side by side to reduce, the arrangement of its two vacuum pumpings heat absorption pipe string as shown in Figure 4, front-seat vacuum heat absorbing pipe string and rear vacuum pumping heat absorption pipe string interlaced arrangement, can all be absorbed by the metal inner pipe 31 of vacuum heat absorbing pipe 18 with the optically focused energy flux of radiation 14 of guaranteeing to put into.During work, optically focused energy flux of radiation 14 is projected to glass outer tube 32 surfaces of vacuum heat absorbing pipe 18, small part energy is reflected onto external environment and is absorbed by glass outer tube 32, most of radiation energy sees through glass outer tube 32 to metal inner pipe 31 outer surfaces, thereby most of energy is absorbed heating of metal inner tube 31, and small part energy is reflected.Feedwater 15 flows into rear the inflow respectively in vacuum heat absorbing pipe 18 of water supplying tank 19 to be carried out flowing into steam header 20 after convection heat exchange with metal inner pipe 31, and steam header 20 flows out superheated vapor 16, completes solar energy to the conversion of water/steam thermal energy.
Figure 5 shows that the present invention is with vacuum heat absorbing pipe water/steam heat absorber of steam-water separator, this heat absorber is comprised of many vacuum heat absorbing pipes 18, water supplying tank 19, steam header 20, steam-water separator 21 and circulating water pump 22.Steam header 20 is positioned at the top of heat absorber, water supplying tank 19 is positioned at the bottom of heat absorber, vacuum heat absorbing pipe 18 adopts welding manner series connection to form the vacuum heat absorbing pipe string of enough length, the bottom of vacuum heat absorbing pipe string and water supplying tank 19 are welded to connect, and the top of vacuum heat absorbing pipe string is connected with steam-water separator 21.Vacuum heat absorbing pipe string sees through loss with at least 2 rows arrangement arranged side by side to reduce.During work, optically focused energy flux of radiation 14 is projected to vacuum heat absorbing pipe 18 surfaces, small part energy is reflected onto external environment and is absorbed by glass outer tube 32, most of radiation energy sees through glass outer tube 32 to metal inner pipe 31 outer surfaces, thereby most of energy is absorbed heating of metal inner tube 31, and small part energy is reflected.Feedwater 15 flows into rear the inflow respectively in vacuum heat absorbing pipe 18 of water supplying tank 19 to be carried out flowing into steam-water separator 21 after convection heat exchange with metal inner pipe 31, and under the effect of circulating water pump 22, feedwater 15 is at 21 of vacuum heat absorbing pipe 18 and steam-water separators circulation heat absorption repeatedly.The saturated vapour 23 producing in steam-water separator 21 flows in the vacuum heat absorbing pipe 18 being connected with steam header 20 and is heated to be superheated vapor 16 inflow steam header 20 rear outflows, completes solar energy to the conversion of water/steam thermal energy.
Claims (5)
1. a tower-type solar thermal power generating system for vacuum heat absorbing pipe heat absorber, is characterized in that described solar heat power generation system comprises heliostat (1), support tower (2), heat absorber (3), regenerative system, steam turbine (4) and generator (5); Described heliostat (1) is arranged in support tower (2) around, and heat absorber (3) is positioned at the top of support tower (1); Feed water pump (8), oxygen-eliminating device (6) and heat absorber (3) are connected successively by pipeline: feed water pump (8) is positioned over support tower (2) above or ground; Heat absorber (3) is connected by pipeline with steam turbine (4), and generator (5) and steam turbine (4) adopt coupling to be fixedly connected with, and between steam turbine (5) and vapour condenser (7), by pipeline, is connected; Described regenerative system is comprised of high-temperature fusion salt storage tank (9), low temperature molten salt storage tank (10), water/steam-fuse salt heat exchanger (11) and fuse salt steam generator (12); The steam side of water/steam-fuse salt heat exchanger (11) is connected with steam turbine (5) with heat absorber (3) respectively by steam line, and the water side of water/steam-fuse salt heat exchanger (11) is connected by pipeline with oxygen-eliminating device (6); The fuse salt side of water/steam-fuse salt heat exchanger (11) is connected with low temperature molten salt storage tank (10) with high-temperature fusion salt storage tank (9) by pipeline, and fuse salt steam generator (12) is connected with low temperature molten salt storage tank (10) with high-temperature fusion salt storage tank (9) by pipeline; Described heat absorber (3) is comprised of many vacuum heat absorbing pipes (18), water supplying tank (19), steam header (20); Steam header (20) is positioned at the top of heat absorber (3), and water supplying tank (19) is positioned at the bottom of heat absorber (3); Many vacuum heat absorbing pipes (18) adopt welding manner series connection to form the vacuum heat absorbing pipe string of sufficient length, the bottom of vacuum heat absorbing pipe string (18) and water supplying tank (19) are welded to connect, and the top of vacuum heat absorbing pipe string (18) is connected with steam-water separator (21).
2. according to the tower-type solar thermal power generating system of vacuum heat absorbing pipe heat absorber claimed in claim 1, it is characterized in that the described vacuum heat absorbing pipe string of at least 2 row is arranged in juxtaposition; The saturated vapour (23) producing in steam-water separator (21) flows in the vacuum heat absorbing pipe (18) being connected with steam header (20) and is heated to be after superheated vapor (16) flows into steam header (20) and flows out.
3. a tower-type solar thermal power generating system for vacuum heat absorbing pipe heat absorber, is characterized in that described solar heat power generation system comprises heliostat (1), support tower (2), heat absorber (3), regenerative system, steam turbine (4) and generator (5); Described heliostat (1) is arranged in support tower (2) around, and heat absorber (3) is positioned at the top of support tower (1); Feed water pump (8), oxygen-eliminating device (6) and heat absorber (3) are connected successively by pipeline: feed water pump (8) is positioned over support tower (2) above or ground; Heat absorber (3) is connected by pipeline with steam turbine (4), and generator (5) and steam turbine (4) adopt coupling to be fixedly connected with, and between steam turbine (5) and vapour condenser (7), by pipeline, is connected; Described regenerative system is comprised of high-temperature fusion salt storage tank (9), low temperature molten salt storage tank (10), water/steam-fuse salt heat exchanger (11) and fuse salt steam generator (12); The steam side of water/steam-fuse salt heat exchanger (11) is connected with steam turbine (5) with heat absorber (3) respectively by steam line, and the water side of water/steam-fuse salt heat exchanger (11) is connected by pipeline with oxygen-eliminating device (6); The fuse salt side of water/steam-fuse salt heat exchanger (11) is connected with low temperature molten salt storage tank (10) with high-temperature fusion salt storage tank (9) by pipeline, and fuse salt steam generator (12) is connected with low temperature molten salt storage tank (10) with high-temperature fusion salt storage tank (9) by pipeline; Described heat absorber is comprised of many vacuum heat absorbing pipes (18), water supplying tank (19), steam header (20), steam-water separator (21) and circulating water pump (22); Steam header (20) is positioned at the top of heat absorber (3), and water supplying tank (19) is positioned at the bottom of heat absorber (3); Many vacuum heat absorbing pipes (18) adopt welding manner series connection to form the vacuum heat absorbing pipe string of sufficient length, the bottom of vacuum heat absorbing pipe string and water supplying tank (19) are welded to connect, and the top of vacuum heat absorbing pipe string (18) is connected with steam-water separator (21); At least 2 vacuum pumping heat absorption pipe strings are arranged in juxtaposition; The saturated vapour (23) producing in steam-water separator (21) flows in the vacuum heat absorbing pipe (18) being connected with steam header (20) and is heated to be after superheated vapor (16) flows into steam header (20) and flows out.
4. according to the tower-type solar thermal power generating system of the vacuum heat absorbing pipe heat absorber described in claim 1 or 2 or 3, it is characterized in that in described heat absorber (3), after vacuum heat absorbing pipe (18) series connection, arrange the vacuum heat absorbing pipe string that forms cavity type, flat or column type.
5. according to the tower-type solar thermal power generating system of vacuum heat absorbing pipe heat absorber claimed in claim 1, it is characterized in that described heliostat (1) is arranged as fan-shaped layout or circumference type is arranged.
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| CN201210316580.6A CN102852742B (en) | 2012-08-30 | 2012-08-30 | Tower type solar thermal power generation system for heat absorber of vacuum heat absorption pipes |
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| US7958731B2 (en) * | 2009-01-20 | 2011-06-14 | Sustainx, Inc. | Systems and methods for combined thermal and compressed gas energy conversion systems |
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| AU2009216080A1 (en) * | 2008-02-22 | 2009-08-27 | Toyota Jidosha Kabushiki Kaisha | Solar thermal energy storage method |
| CN101539123A (en) * | 2008-03-19 | 2009-09-23 | 中国科学院工程热物理研究所 | Groove-tower combined two-stage heat-storage solar-heat power generation system |
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