CN213511061U - Tower-type solar high-low temperature step heat absorption and storage power generation system - Google Patents
Tower-type solar high-low temperature step heat absorption and storage power generation system Download PDFInfo
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- CN213511061U CN213511061U CN202022758278.9U CN202022758278U CN213511061U CN 213511061 U CN213511061 U CN 213511061U CN 202022758278 U CN202022758278 U CN 202022758278U CN 213511061 U CN213511061 U CN 213511061U
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- 238000003860 storage Methods 0.000 title claims abstract description 69
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 54
- 238000010248 power generation Methods 0.000 title claims abstract description 26
- 150000003839 salts Chemical class 0.000 claims abstract description 153
- 239000006096 absorbing agent Substances 0.000 claims abstract description 140
- 238000005338 heat storage Methods 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 56
- 238000010438 heat treatment Methods 0.000 description 9
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- 238000009833 condensation Methods 0.000 description 8
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- 238000009826 distribution Methods 0.000 description 2
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- 239000002028 Biomass Substances 0.000 description 1
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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
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- 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 utility model relates to a tower solar energy high low temperature step heat absorption heat-retaining power generation system, this system include high temperature fused salt heat absorber, go up low temperature heat absorber, lower low temperature heat absorber, low temperature fused salt heater, low temperature fused salt storage tank, high temperature fused salt storage tank, low temperature heat absorber, go up the hot side of low temperature heat absorber and low temperature fused salt heater and establish ties, the cold side of low temperature fused salt heater and the entering of low temperature fused salt storage tank, export the series connection, the high temperature fused salt heat absorber arranges under between low temperature heat absorber and last low temperature heat absorber, low temperature heat absorber and last low temperature heat absorber constitute the low temperature heat absorber down, this system utilizes "the light overflow" and "abandon the light" of the sun ambient field spotlight in the low temperature fused salt storage tank to reduce calorific loss, improve heat storage and system generating efficiency, reduce cost.
Description
Technical Field
The utility model relates to a solar thermal energy utilization especially relates to a tower solar energy high low temperature step heat absorption heat-retaining power generation system.
Background
With the huge consumption of traditional fossil energy, people face increasingly severe energy and environmental problems. A new energy technology revolution is to start with the improvement of energy utilization efficiency and the optimization of energy consumption structure. The improvement of the proportion of non-fossil energy, particularly the proportion of renewable energy, has important significance for future energy and environment. At present, the renewable energy accounts for only about 12 percent, and the renewable energy is already regarded as the strategic high point of the new generation energy technology. Renewable energy sources include water energy, wind energy, solar energy, biomass energy, geothermal energy, ocean energy, and the like. The solar energy is widely distributed, safe and clean, has huge total amount, is inexhaustible, is widely concerned, and is an important component in renewable energy.
The principle of solar thermal power generation is that a heat absorber absorbs sunlight as a high-temperature heat source, a hot working medium absorbs heat, and the heat enters the next step of power circulation to generate mechanical energy to drive a generator set to generate power, and common forms of the solar thermal power generation include a disc type system, a groove type system, a tower type system and the like. The solar photo-thermal power generation can combine low-cost energy storage, has stable output, can bear basic load, is quickly adjusted, can be used as a peak regulation power supply, can further improve the internet consumption capability of other unstable renewable energy sources, and has huge future development prospect.
At present, a tower type thermal power generation system mainly adopts fused salt as a heat absorption medium and a heat storage medium, the fused salt heat absorber is mostly exposed, and the outer wall surface of the fused salt heat absorber is a light condensation receiving surface and an atmosphere interface. The concentration energy flux density on the molten salt heat absorber is directly related to the arrangement mode, control and the like of the heliostat field of the tower system. The heliostat is far away from the heat absorber on the top of the heat collecting tower, so that the position of the focused light spot is storedWithin a certain error. Generally, the concentration energy flow density distribution on the molten salt heat absorber is high in the middle (the highest energy flow density can be 1000kW/m larger2Above), a distribution gradually decreasing toward both ends. The fused salt heat absorber requires high temperature, so that only the middle high-strength light-gathering part can be utilized, and the light-gathering energy overflowing from the two ends is not absorbed and utilized, thereby causing the loss of 'light overflow'. The loss of the 'light overflow' can reach about 10%. In order to prevent the damage of the accessory equipment caused by the light condensation overflowing from the two ends of the heat absorber, heat insulation protection devices are arranged on the upper side and the lower side of the molten salt heat absorber, and white heat-resistant heat insulation materials are generally adopted. Meanwhile, in order to reduce overflow loss as much as possible, light-gathering energy flow on the heat absorber must be concentrated, local over-temperature of the heat absorber is more easily caused, the service life is shortened, and even safety accidents occur.
When cloud shielding occurs, the solar radiation energy received by the fused salt heat absorber is reduced sharply, and at the moment, the heat absorber can dissipate heat outwards all the time, so that the wall temperature of the heat absorber is reduced sharply, and the fused salt working medium in the heat absorber can be solidified seriously, thereby causing fatal damage to the heat absorber.
In conclusion, the molten salt heat absorber has a severe working environment, high temperature, large temperature gradient and sensitive thermal stress; when the device is normally operated, the device is started and stopped at least once every day, and the thermal fatigue influence is serious. In order to ensure that the fused salt heat absorber can be timely regulated and controlled when the solar radiation changes, a certain margin is reserved for the design of the number of the heliostats. When the solar energy is sufficient, the condensing focus of part of the heliostat is not projected on the fused salt heat absorber, but is prepared at any time near the fused salt heat absorber. When the temperature of the molten salt heat absorber is too high, withdrawing a part of the molten salt heat absorber for heliostat condensation as a preparation; when the temperature of the heat absorber is reduced, a prepared heliostat is put into the system, so that the temperature of the heat absorber is stable. The prepared heliostat concentrates light to cause light abandon loss which can reach more than 10%.
In conclusion, the total loss of the 'light overflow' and the 'light abandon' can reach more than 20 percent, thereby causing huge loss, reducing the efficiency and greatly improving the system cost.
Disclosure of Invention
The utility model discloses tower solar energy fused salt power generation system's above needle "light that overflows" and "abandon light" loss, provided a tower solar energy high low temperature step heat absorption heat-retaining power generation system, will "overflow light" and "abandon light" and adopt the low temperature heat absorber to absorb, and heat the fused salt working medium in the low temperature fused salt storage tank with the absorbed heat or the feedwater among the steam rankine cycle power generation system, thereby reduce the loss, improve output, can improve ten percentage points with system's efficiency. The utility model discloses a concrete scheme as follows:
a tower-type solar high-low temperature step heat absorption and storage power generation system comprises a high-temperature molten salt heat absorber, a low-temperature molten salt heater, a low-temperature molten salt storage tank and a high-temperature molten salt storage tank, and is characterized in that the low-temperature heat absorber is divided into an upper low-temperature heat absorber and a lower low-temperature heat absorber, the upper low-temperature heat absorber is positioned at the upper end of the high-temperature molten salt heat absorber, the lower low-temperature heat absorber is positioned at the lower end of the high-temperature molten salt heat absorber, namely the high-temperature molten salt heat absorber is positioned between the upper low-temperature heat absorber and the; the outlet of the low-temperature heat absorber is connected with the inlet of the low-temperature molten salt heater, namely the low-temperature heat absorber is connected with the hot side of the low-temperature molten salt heater in series; the outlet of the low-temperature molten salt storage tank is connected with the inlet of the cold side of the low-temperature molten salt heater, and the outlet of the cold side of the low-temperature molten salt heater is connected with the inlet of the low-temperature molten salt storage tank, namely, the low-temperature molten salt storage tank is connected with the cold side of the low-temperature molten salt heater in series; the import of high temperature fused salt heat absorber links to each other with low temperature fused salt storage tank export, and the export of high temperature fused salt heat absorber links to each other with high temperature fused salt storage tank import.
The high-temperature molten salt heat absorber absorbs high-strength partial energy of heliostat field condensation in the tower system to generate high-temperature molten salt. The upper low-temperature heat absorber and the lower low-temperature heat absorber absorb 'light spillage' of the tower system heliostats at two ends of the high-temperature molten salt heat absorber, the heliostats in a preparation state can be projected on the low-temperature heat absorber in a 'light abandoning' mode, the low-temperature heat absorbing working medium enters the low-temperature heat absorber and is heated by the 'light spillage' and the 'light abandoning', the heated low-temperature heat absorbing working medium enters the low-temperature molten salt heater and is used for heating a molten salt working medium coming out of the low-temperature molten salt storage tank, and the heated molten salt working medium enters the low-temperature molten. The low-temperature heat absorption working medium of the low-temperature heat absorber is any one of water, heat conduction oil and low-temperature molten salt.
The upper low-temperature heat absorber and the lower low-temperature heat absorber are connected in parallel or in series. The series connection mode is that the low-temperature heat absorption working medium sequentially passes through the lower low-temperature heat absorber and then passes through the upper low-temperature heat absorber or the low-temperature heat absorption working medium sequentially passes through the upper low-temperature heat absorber and then passes through the lower low-temperature heat absorber. The parallel connection mode is that the low-temperature heat absorption working medium is divided into two paths which respectively pass through the upper low-temperature heat absorber and the lower low-temperature heat absorber, and the low-temperature heat absorption working medium is respectively taken out and then is combined into one path. Further, the upper low-temperature heat absorber and the lower low-temperature heat absorber are respectively divided into at least two parts, and each part is connected in series or in parallel.
Furthermore, the tower type solar high-low temperature step heat absorption and storage power generation system further comprises a feed water heater, wherein a hot side inlet of the feed water heater is connected with an outlet of the low-temperature heat absorber, a hot side outlet of the feed water heater is connected with an inlet of the low-temperature heat absorber, and namely the hot side of the feed water heater is connected with the hot side of the low-temperature molten salt heater in parallel. In addition, the parallel connection mode can also adopt series connection, namely the outlet of the low-temperature heat absorber is connected with the inlet of the hot side of the feed water heater, the outlet of the hot side of the feed water heater is connected with the inlet of the hot side of the low-temperature molten salt heater, and the outlet of the hot side of the low-temperature molten salt heater is connected with the inlet of the low-temperature heat absorber; or the outlet of the low-temperature heat absorber is connected with the inlet of the hot side of the low-temperature molten salt heater, the outlet of the hot side of the low-temperature molten salt heater is connected with the inlet of the hot side of the feed water heater, and the outlet of the hot side of the feed water heater is connected with the inlet of the low-temperature heat absorber.
Preferably, the system further comprises a low-temperature heat absorption working medium storage tank and a three-way valve, wherein the outlet of the low-temperature heat absorber is connected with the inlet of the low-temperature heat absorption working medium storage tank, the outlet of the low-temperature heat absorption working medium storage tank is connected with the inlet of the three-way valve, and the outlet of the three-way valve is respectively connected with the inlet of the hot side of the low-temperature molten salt heater and the inlet. When the system operates, the fluctuation influence of sunlight is relieved due to the storage effect of the low-temperature heat absorption working medium storage tank, and the three-way valve is adjusted according to the working medium outlet temperature of the low-temperature heat absorber and the temperature of the low-temperature heat absorption working medium storage tank, so that the flow of the low-temperature working medium entering the low-temperature molten salt heater is adjusted or the low-temperature molten salt heater is bypassed.
Further, this system still includes steam generator, steam turbine, condenser, feed pump, high temperature fused salt storage tank export with steam generator hot side import links to each other, steam generator hot side export with low temperature fused salt storage tank import links to each other, steam generator cold side export with steam turbine import links to each other, steam turbine export with the condenser import links to each other, the condenser export with feed pump import links to each other, and it links to each other with steam generator cold side import to give water pump export, perhaps gives water pump export and feedwater heating cold side and establishes ties, again with steam generator cold side import links to each other.
The utility model carries out cascade utilization of high-intensity light gathering of heliostat light gathering and overflowed low-intensity light gathering energy, utilizes the high-intensity light gathering to generate high-temperature fused salt, and utilizes the high-temperature fused salt to heat water supply to generate high-temperature high-pressure water vapor; and heating the molten salt in the low-temperature molten salt storage tank or the feedwater in the Rankine cycle by using the overflowed low-intensity condensed light, so as to improve the feedwater temperature. The heat of different temperature areas is reasonably utilized from the grade of solar energy light-gathering energy, and the power generation efficiency of the system is improved.
The high-temperature molten salt heat absorber is a device for improving the temperature of a molten salt working medium by utilizing concentrating solar energy, and the outlet molten salt can reach more than 550 ℃; the low-temperature heat absorber is a device for improving the temperature of a low-temperature heat absorption working medium by utilizing concentrated solar energy, and the low temperature is higher than 300 ℃ relative to the temperature of a high-temperature molten salt heat absorber; the low-temperature molten salt heater is a device for heating molten salt in the low-temperature molten salt storage tank by using a low-temperature heat absorption working medium as a heat source; the steam turbine is a device which applies work by utilizing high-temperature and high-pressure steam, and is also called a steam turbine; the feed water heater is a device for heating feed water in a Rankine cycle by using a low-temperature heat absorption working medium; the steam generator is a device for heating, evaporating and superheating liquid water by using a high-temperature heat source, and generally comprises a preheater, an evaporator, a steam drum, a superheater and the like.
The utility model discloses utilize the low temperature heat absorber that high temperature fused salt heat absorber both ends set up, absorb "excessive light" and "abandon light" for molten salt temperature in the low temperature fused salt storage tank improves, and can further heat feedwater temperature, improves the generating efficiency of system. Furthermore, the utility model discloses can carry out corresponding upgrading based on original tower molten salt system and reform transform, it is little to original system influence, reduced the transformation cost, system efficiency is expected to improve more than 10%.
Drawings
FIG. 1 is a schematic view of specific example 1;
FIG. 2 is a schematic view of embodiment 2;
FIG. 3 is a schematic view of embodiment 3;
FIG. 4 is a schematic view of embodiment 4;
in the figure: 1-upper low temperature heat absorber; 2-high temperature molten salt heat absorber; 3-low temperature heat absorber; 4-low temperature molten salt heater; 5-low temperature molten salt storage tank; 6-high temperature molten salt storage tank; 7-low temperature heat absorption working medium storage tank; 8-three-way valve; 9-a feedwater heater; 10-a steam generator; 11-a steam turbine; 12-a generator; 13-a condenser; 14-feed water pump.
Detailed Description
Example 1
The utility model provides a tower solar energy high low temperature step heat absorption heat-retaining power generation system, as shown in figure 1, including last low temperature heat absorber 1, high temperature fused salt heat absorber 2, lower low temperature heat absorber 3, low temperature fused salt heater 4, low temperature fused salt storage tank 5, high temperature fused salt storage tank 6. The upper low-temperature heat absorber 1 is positioned at the upper end of the high-temperature molten salt heat absorber 2, and the lower low-temperature heat absorber 3 is positioned at the lower end of the high-temperature molten salt heat absorber 2, i.e. the high-temperature molten salt heat absorber 2 is positioned between the upper low-temperature heat absorber 1 and the lower low-temperature heat absorber 3. The upper low-temperature heat absorber 1 and the lower low-temperature heat absorber 3 are connected in series to form a low-temperature heat absorber. The outlet of the upper low-temperature heat absorber 1 is connected with the inlet of the hot side of the low-temperature molten salt heater 4, the outlet of the hot side of the low-temperature molten salt heater 4 is connected with the inlet of the lower low-temperature heat absorber 3, and the outlet of the lower low-temperature heat absorber 3 is connected with the inlet of the upper low-temperature heat absorber 2.
The low-temperature heat absorber is used for absorbing light overflow and light abandon of heliostat field condensation, heating the low-temperature heat absorption working medium flowing through the low-temperature heat absorption working medium, the temperature can reach 300-350 ℃, the heated low-temperature heat absorption working medium enters the hot side of the low-temperature molten salt heater 4 to heat the molten salt working medium coming out of the low-temperature molten salt storage tank 5, and the heated molten salt working medium enters the low-temperature molten salt storage tank 5. By the method, the originally unused 'flash' and 'waste light' are absorbed by the low-temperature working medium, and the heat is stored in the molten salt. The low-temperature heat absorption working medium of the low-temperature heat absorber is any one of water, heat conduction oil and low-temperature molten salt. The high-temperature molten salt heat absorber absorbs high-strength partial energy of heliostat field condensation, the average condensation ratio can reach more than 300, and the high-temperature molten salt heat absorber is used for heating high-temperature molten salt, and the temperature can reach more than 550 ℃.
Example 2
A low-temperature heat absorption working medium tank 7 and a three-way valve 8 are added to embodiment 1. The outlet of the upper low-temperature heat absorber 1 is connected with the inlet of a low-temperature heat absorption working medium storage tank 7, the outlet of the low-temperature heat absorption working medium storage tank 7 is connected with the inlet of a three-way valve 8, and the outlet of the three-way valve 8 is respectively connected with the inlet of the hot side of a low-temperature molten salt heater 4 and the inlet of a lower low-temperature heat absorber. Due to instability of sunlight, when the temperature of the working medium in the low-temperature heat absorption working medium storage tank 7 is too low, the three-way valve 8 is adjusted, and the flow of the low-temperature working medium flowing into the low-temperature molten salt heater 4 is reduced; if the temperature in the low-temperature heat absorption working medium storage tank 7 is lower than the temperature of the molten salt in the low-temperature molten salt storage tank 5, adjusting the three-way valve 8, and directly flowing the low-temperature working medium into an inlet of the lower low-temperature heat absorber 8 without entering the low-temperature molten salt heater 4; when the temperature in the low-temperature heat absorption working medium storage tank 7 rises again, the three-way valve 8 is adjusted to increase the flow of the low-temperature heat absorption working medium entering the low-temperature molten salt heater 4.
Example 3
Based on the embodiment 1, as shown in fig. 3, a feed water heater 9 is additionally provided, an inlet of a hot side of the feed water heater 9 is connected with an outlet of the upper low-temperature heat absorber 1, an outlet of the hot side of the feed water heater 9 is connected with an inlet of the lower low-temperature heat absorber 3, that is, the hot side of the feed water heater 9 is connected in parallel with the hot side of the low-temperature molten salt heater 4. One part of the low-temperature heat absorption working medium from the upper low-temperature heat absorber 1 enters the low-temperature molten salt heater 4, and the other part of the low-temperature heat absorption working medium enters the feed water heater 9. In the feedwater heater 4, the feedwater of the rankine cycle is heated by the low-temperature heat absorption medium, so that the feedwater temperature can be increased and the power generation efficiency can be improved.
Example 4
Based on embodiment 3, as shown in fig. 4, a steam generator 10, a steam turbine 11, a generator 12, a condenser 13, and a water feed pump 14 are additionally provided, an outlet of the high-temperature molten salt storage tank 6 is connected to an inlet of a hot side of the steam generator 10, an outlet of a hot side of the steam generator 10 is connected to an inlet of the low-temperature molten salt storage tank 5, an outlet of a cold side of the steam generator 10 is connected to an inlet of the steam turbine 11, an outlet of the steam turbine 11 is connected to an inlet of the condenser 13, an outlet of the condenser 13 is connected to an inlet of the water feed pump 14, an outlet of the water feed pump 14 is connected to an inlet of a cold side of the feedwater heating 9, an outlet of the. Sunlight focused by the heliostat is projected to the high-temperature molten salt heat absorber 2, the lower low-temperature heat absorber 3 and the upper low-temperature heat absorber 1, wherein the high-strength light gathering part is absorbed by the high-temperature molten salt heat absorber 2 to heat molten salt, and the heated molten salt enters the high-temperature molten salt storage tank 6 to be stored; the low-temperature heat absorption working medium is heated by low-intensity light condensation in the upper low-temperature heat absorber 1 and the lower low-temperature heat absorber 3, one part of the heated low-temperature heat absorption working medium enters the low-temperature molten salt heater 4 to heat the molten salt working medium coming out of the low-temperature molten salt storage tank 5, and the other part of the heated low-temperature heat absorption working medium enters the water supply heater 9 to heat the water supply pressurized by the water supply pump 14; the feed water heated by the feed water heater 9 enters a steam generator 10, the feed water is heated into high-temperature high-pressure steam by the molten salt from the high-temperature molten salt storage tank, and then the high-temperature high-pressure steam enters a steam turbine 11 to expand and do work to drive a generator 12 to generate electricity; the exhaust steam from the steam turbine 11 enters a condenser 13 to be cooled into condensed water, and the condensed water enters a water supply pump 14 to form a circulation.
Claims (10)
1. A tower type solar high-low temperature step heat absorption and storage power generation system comprises a high-temperature molten salt heat absorber, a low-temperature heat absorber and a low-temperature molten salt heater, and is characterized in that the low-temperature heat absorber is divided into an upper low-temperature heat absorber and a lower low-temperature heat absorber, the upper low-temperature heat absorber is positioned at the upper end of the high-temperature molten salt heat absorber, the lower low-temperature heat absorber is positioned at the lower end of the high-temperature molten salt heat absorber, namely the high-temperature molten salt heat absorber is positioned between the upper low-temperature heat absorber and the lower low-temperature heat absorber, and the upper low; and the outlet of the low-temperature heat absorber is connected with the inlet of the low-temperature molten salt heater, namely the low-temperature heat absorber is connected with the hot side of the low-temperature molten salt heater in series.
2. The tower-type solar high-low temperature step heat absorption and storage power generation system according to claim 1, further comprising a low-temperature molten salt storage tank and a high-temperature molten salt storage tank, wherein an outlet of the low-temperature molten salt storage tank is connected with a cold-side inlet of the low-temperature molten salt heater, and a cold-side outlet of the low-temperature molten salt heater is connected with an inlet of the low-temperature molten salt storage tank, namely the low-temperature molten salt storage tank is connected with the cold side of the low-temperature molten; the high-temperature molten salt heat absorber inlet is connected with the low-temperature molten salt storage tank outlet, and the high-temperature molten salt heat absorber outlet is connected with the high-temperature molten salt storage tank inlet.
3. The tower-type solar high-low temperature step heat absorption and heat storage power generation system according to claim 1, further comprising a low-temperature heat absorption working medium storage tank and a three-way valve, wherein an outlet of the low-temperature heat absorber is connected with an inlet of the low-temperature heat absorption working medium storage tank, an outlet of the low-temperature heat absorption working medium storage tank is connected with an inlet of the three-way valve, and outlets of the three-way valve are respectively connected with an inlet of a hot side of the low-temperature molten salt heater and an.
4. The tower-type solar high-low temperature step heat absorption and storage power generation system according to claim 2, further comprising a feed water heater, wherein a hot side inlet of the feed water heater is connected with an outlet of the low-temperature heat absorber, and a hot side outlet of the feed water heater is connected with an inlet of the low-temperature heat absorber, namely the hot side of the feed water heater is connected in parallel with the hot side of the low-temperature molten salt heater.
5. The tower-type solar high-low temperature step heat absorption and storage power generation system according to claim 2, further comprising a feed water heater, wherein an outlet of the low-temperature heat absorber is connected with an inlet of a hot side of the feed water heater, an outlet of the hot side of the feed water heater is connected with an inlet of the hot side of the low-temperature molten salt heater, and the outlet of the hot side of the low-temperature molten salt heater is connected with an inlet of the low-temperature heat absorber, namely the hot side of the feed water heater is connected with the hot side of the low-temperature.
6. The tower-type solar high-low temperature step heat absorption and storage power generation system according to claim 2, further comprising a feed water heater, wherein an outlet of the low-temperature heat absorber is connected with an inlet of a hot side of the low-temperature molten salt heater, an outlet of the hot side of the low-temperature molten salt heater is connected with an inlet of the hot side of the feed water heater, and the outlet of the hot side of the feed water heater is connected with an inlet of the low-temperature heat absorber, namely the hot side of the feed water heater is connected with the hot side of the low-temperature.
7. The tower-type solar high-low temperature step heat absorption and storage power generation system according to any one of claims 2, 4, 5 or 6, further comprising a steam generator, wherein an outlet of the high-temperature molten salt tank is connected with an inlet of a hot side of the steam generator, and an outlet of a hot side of the steam generator is connected with an inlet of the low-temperature molten salt tank.
8. The tower-type solar high-low temperature step heat absorption and storage power generation system according to claim 2, further comprising a steam generator, a steam turbine, a condenser and a water feed pump, wherein an outlet of the high-temperature molten salt storage tank is connected with an inlet of a hot side of the steam generator, an outlet of a hot side of the steam generator is connected with an inlet of the low-temperature molten salt storage tank, an outlet of a cold side of the steam generator is connected with the steam turbine, an outlet of the steam turbine is connected with an inlet of the condenser, an outlet of the condenser is connected with an inlet of the water feed pump, and an outlet of the water feed pump is connected with an inlet of a cold side of.
9. The tower-type solar high-low temperature step heat absorption and storage power generation system according to any one of claims 4, 5 or 6, further comprising a steam generator, a steam turbine, a condenser and a water feed pump, wherein an outlet of the high-temperature molten salt storage tank is connected with an inlet of a hot side of the steam generator, an outlet of a hot side of the steam generator is connected with an inlet of the low-temperature molten salt storage tank, an outlet of a cold side of the steam generator is connected with an inlet of the steam turbine, an outlet of the steam turbine is connected with an inlet of the condenser, an outlet of the condenser is connected with an inlet of the water feed pump, an outlet of the water feed pump is connected with an inlet of a cold side of the water feed heater, and an outlet of the cold.
10. The tower-type solar high-low temperature step heat absorption and storage power generation system according to any one of claims 1, 2, 3, 4, 5, 6 or 8, characterized in that the low-temperature heat absorption working medium of the low-temperature heat absorber is any one of water, heat conduction oil and low-temperature molten salt.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114542409A (en) * | 2020-11-25 | 2022-05-27 | 杭州明晟新能源科技有限公司 | Tower type solar high-low temperature step heat absorption and storage power generation system and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114542409A (en) * | 2020-11-25 | 2022-05-27 | 杭州明晟新能源科技有限公司 | Tower type solar high-low temperature step heat absorption and storage power generation system and method |
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