LU504287B1 - Energy efficient utilization system for coal-fired unit coupled with solar energy - Google Patents
Energy efficient utilization system for coal-fired unit coupled with solar energy Download PDFInfo
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- LU504287B1 LU504287B1 LU504287A LU504287A LU504287B1 LU 504287 B1 LU504287 B1 LU 504287B1 LU 504287 A LU504287 A LU 504287A LU 504287 A LU504287 A LU 504287A LU 504287 B1 LU504287 B1 LU 504287B1
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- water
- outlet
- coal
- heater
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000005338 heat storage Methods 0.000 claims abstract description 31
- 238000000605 extraction Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims description 13
- 238000010521 absorption reaction Methods 0.000 claims description 9
- 238000005057 refrigeration Methods 0.000 claims description 7
- 230000001172 regenerating effect Effects 0.000 abstract description 4
- 239000003245 coal Substances 0.000 description 10
- 238000010248 power generation Methods 0.000 description 8
- 239000002918 waste heat Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/003—Devices for producing mechanical power from solar energy having a Rankine cycle
- F03G6/005—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K19/00—Regenerating or otherwise treating steam exhausted from steam engine plant
- F01K19/02—Regenerating by compression
- F01K19/04—Regenerating by compression in combination with cooling or heating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/071—Devices for producing mechanical power from solar energy with energy storage devices
Abstract
This invention provides an energy efficient utilization system of coal-fired unit coupled with solar energy and operation method thereof, comprising the outlet of the boiler is connected with the inlet of the steam turbine unit, which is connected with the condenser, and the outlet water supply pipeline of the condenser is connected with the heater unit and the boiler in turn; the heat-conducting oil-water heat exchanger is connected with the heater unit, the outlet of the solar collector is connected with the hot-side inlet of the heat-conducting oil-water heat exchanger, and the hot-side outlet of the heat-conducting oil-water heat exchanger is connected with the inlet of the heat storage tank, the water-side outlet of the heat storage tank is provided with a heat exchanger and a heater in turn, and solar heat energy is used to replace the regenerative extraction of some steam turbines to heat the boiler feed water.
Description
ENERGY EFFICIENT UTILIZATION SYSTEM FOR COAL-FIRED UNIT
COUPLED WITH SOLAR ENERGY
The invention belongs to the technical field of energy comprehensive utilization, particularly relates fo energy efficient utilization system for coal-fired unit coupled with solar energy.
The world energy structure is developing and transforming towards clean, low-carbon, high-efficiency and diversified direction. The power structure in most areas has been dominated by coal-fired power generation for a long time, which has led to increasingly serious environmental pollution and resource shortage, making the traditional coal-fired power generation face a severe challenge.
Intermitient renowable energy solar energy and conventional fossil energy are complementary in the thermal system, On the one band, the advantages of large adjustment range and high efficiency of turbine system in coal-fired power plants are used to peak-regulate the solar energy with strong time-varying characteristics. On the other hand, the coal consumption of coal-fired power plants is reduced due to the introduction of solar energy. The complementary hght-coal power generation 15 an effective scheme to deal with the diversified transformation of energy structure, energy conservation and emission reduction. Therefore, in the practical application process, the effect of complementary power generation between light and coal in the prior art cannot ensure the stable increase of power generation and reduce the loss of coal at the same time, and it has less recycling of solar residual heat, resulting in the waste of resources.
Alming at the problems existing in the prior art, the invention aims to provide an energy efficient ulllization system of a coal-fired unit coupled with solar energy. The system uses solar heat energy to replace regenerative extraction of some steam turbines to heat boiler feed water, thereby increasing power generation and reducing coal consumption; The residual heat of solar energy is recycled through the condensate bypass, which improves the boiler efficiency and reduces the heat consumption of the steam turbine, and can be used as an important means of peak shaving of the unit. The system conforms to the principle of energy cascade utilization and has great energy-saving benefits.
The invention is realize by that following technical scheme.
An energy efficient utilization system of a coal-fired unit coupled with solar energy, characterized by comprising a boiler, a steam turbine unit, a condenser, a heating unit, à beat- conducting oil-water heat exchanger, a heating unit, a solar collector and a heat storage tank; the outlet of the baler is connected with the inlet of the steam turbine unit , the exhaust side of the steam turbine unit is connected with the condenser, and the outlet water supply pipeline of the condenser 15 connected with the heater unit and the botler in turn, The heat-conductng oil- water heat exchanger is connected with a healer unit, the outlet of the solar collector is connected with the hot side inlet of the heat-conducting oti-water heat exchanger, the hot-side outlet of the heat-conducting oil-water heat exchanger is connected with the inlet of a thermal storage tank, the outlet of the thermal storage tank is connected with the inlet of a solar collector, the condensate-side outlet of the condenser 15 connected with the water-eide inlet of the thermal storage tank, The water side outlet of the heat storage tank is sequentially provided with a heat exchanger and an air heater, and the outlet of the air heater 15 connected with the condenser.
Preferably, the heater unit comprises a low-pressure heater and a high-pressure heater; the outlet water supply pipeline of the condenser is connected with the inlet of a low-pressure heater and a high-pressure heater in turn, and the outlet of the high-pressure heater is communicated with the inlet of the boiler.
Preferably, the heater unit comprises a low-pressure beater and a mgh-pressure heater, The outlet water supply pipeline of the condenser is sequentially connected with the inlets of a low- pressure heater and a high-pressure heater, and the outlet of the high-pressure beater 18 communicated with the inlet of the boiler.
Preferably, a deaerator is arranged between the low-pressure heater and the high-pressure heater,
Preferably, the steam extraction side of the steam turbine unit ia respectively connected with a low-pressure heater, a deacrator and a high-pressure heater through steam extraction pipelines,
Preferably, the cold side of the heat-conducting oil-water heat exchanger is connected in parallel with the high-pressure heater. À first control valve is arranged between the inlet of the high-pressure heater and the connecting pipeline of the cold-side inlet of the heat-conducting oli-water heat exchanger,
Preferably, a second control valve is arranged between the condensate outlet branch of the condenser and the water side inlet of the heat storage tank
Preferably, the cold air side inlet of the air heater ts connected with a cold air source, and the hot air side outlet of the air heater is connected with an air preheater.
Preferably, the heat exchanger te connected to a heat user for external heating in winter or a heat source for driving absorption refrigeration in summer.
An operation method of an energy efficient utilization system of a coal-fired unit coupled with solar energy, which is based on the energy efficient utibzation system of a coal-fired unit coupled with solar energy, comprising: The condensed water is heated by steam extraction through the heating unit in turn, then enters the boiler to absorb heat, and then expands in the steam turbine unit to do work, and then is condensed in the condenser to complete the cycle: In addition, the solar collector uses the sun to heat the heat transfer oil, part of the feed water absorbs heat in the heat transfer oil-water heat exchanger through parallel branches, the heat transfer où after heat release is stored in the heat storage tank, the condensed water branch beats the heat medium water in the heat exchanger after absorbing heat in the heat storage tank, and the hot water residual heat 15 recycled through the air heater,
Compared with the prior art, the invention has the following beneficial technical effects:
The invention aims to provide an energy efficient utilization system of a coal-fired unit coupled with solar energy. The system uses solar heat energy to replace regenerative extraction of some steam turbines to heat boiler feed water, thereby increasing power generation and reducing coal consumption, thus greatly improving the economy of the unit, the residual heat of solar energy is recycled through the condensate bypass, which improves the boiler efficiency and reduces the heat consumption of the steam turbine, and can be used as an important means of peak shaving of the unit. The system conforms to the principle of energy cascade utilization and has great energy-saving benefits.
Further, the system of the invention uses solar waste heat to heat condensed water for external heating or refrigeration by setting a heat exchanger, and the hot water waste heat is also recycled by the air heater, which conforms to the principle of energy cascade utilization and has a great energy-saving effect;
Further, the system of the invention adopts the air beater to recover the hot water waste heat, which is used in cooperation with the low-temperature economizer, on one aspect, it can improve the inlet temperature of the air preheater and effectively avoid the corrosion and blockage of the air preheater; on the other aspect, it can improve boiler combustion conditions, thus improving boiler efficiency and reducing steam turbine heat consumption;
Further, the system provided by the invention is arranged with a condensate bypass, which can be used as an important means for peak regulation of the unit; when the load changes, the new steam quantity can be changed by changing the condensate bypass flow, so as to weet the load requirements; when the system is in high-Joad operation in the daytime, the first control valve can be adjusted to make more feed water absorb solar heat, thereby reducing the heat absorption of the boiler and coal consumption: at the same time, the second control valve can be adjusted down or closed to increase the new steam flow to meet the external load requirements, and the excess heat of the solar collector 15 stored in the heat storage tank When the system 15 in low-load operation at night, the heat stored in the heat storage tank heats the condensate branch and the heater bypass water supply, and the second control valve can be adjusted to reduce the new steam flow to meet the external load demand.
Fig 1 is a schematic structural diagram of an energy efficient utilization system of coal- fired units coupled with solar energy.
Wherein boiler 1, steam turbine unit 2, condenser 3, low-pressure heater À, deaerator 3, high-pressure heater 6, heat-conducting oil-water heat exchanger 7, solar collector 8, heat storage tank 9, heat exchanger 10, air heater 11, first control valve 101; second control valve 102,
In the following, the invention will be further explained in detail with specific examples, which are meant to explain but not limit the invention.
In order to make people in the technical field better understand the scheme of the invention, the technical scheme in the embodiment of the invention will be described clearly and completely with the attached drawings. Obviously, the described embodiment is only a part of the embodiment of the invention, but not the whole embodiment. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in the field without creative work should belong to the scope of protection of the present invention.
It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence, It should be understood that the data thus used are interchangeable under appropriate circumstances, so that the embodiments of the invention described herein can be implemented in other orders than those iHustrated or described herein, Furthermore, the terms "including" and “having” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or equipotent that includes a series of steps or units 15 not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products or equipment.
Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commoniy understood by those skilled in the technical field of the present invention. The terminology used in the description of the invention herein is only for the purpose of describing specific embodiments, and is not intended to hot the invention, As used herein, the term "and/or" includes any and all combinations of one or more related listed items,
As shown in Figure 1, itis a schematic structural diagram of an energy efficient utilization system for coal-fired units coupled with solar energy. The system device includes. boiler 1, steam turbine 2, steam extraction and condenser 3, low-pressure heater 3, deacrator 5, primary beater and high-pressure heater 5, oil-water heat exchanger 7, which 1s used for beating feed water and conducting heat. Solar collector & uses the heat collection field to absorb solar heat to heat the heat-conducting où and heat storage tank © for stoning the heat of the heai- conducting oil; heat exchanger 10: for transferring the heat to heat users or driving the absorption refrigeration and air heater 11: for heating the cold air entering the air preheater.
The outlet of the boiler 1 is connected with the inlet of the steam turbine 2, the exhaust side of the steam turbine 2 is connected with the condenser 3, and the outlet water supply pipeline of the condenser 3 1s connected with the heater unit and the boiler in turn, The heai- conducting oil-water heat exchanger 7 is connected with a heater unit, the outlet of the solar collector B is connected with the hoi-side niet of the hest-conducting oil-water heat exchanger 7, the hot-side outlet of the heat-conducting oil-water heat exchanger 7 is connected with the iniet of à heat storage tank 9, the outlet of the heat storage tank 9 is connected with the inlet of the solar collector 8, the condensate-side outlet of the condenser 3 is connected with the water side inlet of the heat storage tank 9, and the water-side outlet of the heat storage tank 9 is sequentially provided with a heat exchanger 10 and a beater 11. The outlet of the air heater 11 is connected with the condenser 3. According to the energy efficient utilization system of the coal-fired unit coupled with solar energy, the boiler feed water is heated by using solar heat energy instead of regenerative extraction of some steam turbines, so that the power generation is inercased, the coal consumption is reduced, and the economy of the unit 15 greatly improved.
The system of the invention uses solar waste heat to heat condensed water for external heating or refrigeration, and the hot water waste heat is also recycled by the air heater, which conforms to the principle of energy cascade utilization and has great energy-saving effect, The heater unit comprises a low-pressure heater 4 and a high-pressure heater 6; The outlet water supply pipeline of the condenser 3 is sequentially connected with the inlets of the low-pressure heater 4 and the high-pressure heater 6, and the outlet of the high-pressure heater 6 Is communicated with the inlet of the boiler 1
A deaerator 5 is arranged between the low-pressure heater 4 and the high-pressure heater
The steam extraction aide of the steam turbine unit 2 is respectively connected with a low pressure heater 4, a deacrator 5 and a high-pressure heater 6 through steam extraction pipelines.
The cold side of the heai-conducting oil-water heat exchanger 7 is connected in parallel with the high-pressure heater &.
A first control valve 101 is arranged between the inlet of the high-pressure heater 6 and the connecting pipeline of the cold-side inlet of the heat-conducting cil-water heat exchanger 7. À second control valve 102 is arranged between the condensate outlet branch of the condenser 3 and the water side inlet of the heat storage tank 9. The system provided by the invention is provided with a condensate bypass, which can be used as an important means for peak regulation of the unit. When the load changes, the new steam quantity can be changed by changing the condensate bypass flow, so as to meet the load requirements. When the system is in high-load operation during the day, the first control valve can be adjusted to make more feed water absorb solar heat, thereby reducing the boiler heat absorption and coal consumption. At the same time, the second control valve can be adjusted to increase the new steam flow to meet the external load requirements, and the oxcess heat of the solar collector is stored in the heat storage tank. When the system is in low-load operation at night, the heat stored in the heat storage tank heats the condensate branch and the heater bypass water supply, and the second control valve can be adjusied to reduce the new steam flow to meet the external load demand.
The cold air side inlet of the air heater 11 is connected with a cold air source, and the hot air side outlet of the air heater 11 is connected with an air preheater, The system provided by the invention is provided with a condensate bypass, which can be used as an important means for peak regulation of the unit. When the load changes, the new steam quantity can be changed by changing the condensate bypass flow, sc as to meet the load requirements.
The heat exchanger 10 18 connected to a beat user for external beating in winter or a heat source for driving absorption refrigeration in summer The system of the invention adopts the air heater to recover the waste heat of hot water, which is used in cooperation with the low- temperature economizer, on the one hand, it can improve the inlet temperature of the air preheater and effectively avoid the corrosion and blockage of the air preheater; On the other band, it can improve boiler combustion conditions, improve boiler efficiency and reduce steam turbine heat consumption;
The invention relates to an operation method of an energy efficient utilization system of a coal-fired unit coupled with solar energy, which comprises the following steps:
The condensed water is extracied and heated by the heating unit in turn, then enters the boiler 1 to absorb beat, and then expands in the steam turbine unit 2 to do work and then condenses in the condenser 3 to complete the cycle; In addition, the solar collector 8 uses the sun to beat the heat transfer oil, part of the feed water absorbs heat in the beat transfer oil-water heat exchanger 7 through the parallel branch, and the heat transfer oil after heat release 15 stored in the heat storage tank 9, and the condensate branch heats the heat medium water in the heat exchanger 10 after absorbing heat in the heat storage tank 9, and the hot water residual heat is recycled through the heater IT.
The preferred specific working process 18:
As shown in Figure |, itis a schematic structural diagram of an energy-efficient utilization system of coal-fired units coupled with solar energy. The connection relationship of all devices is as follows: the outlet of boiler 1 is connected with the inlet of steam turbine unit 2, the exhaust of steam turbine unit 2 1s connected with condenser 3, the water supply pipeline at the outlet of condenser 3 passes through low-pressure beater 4, deacrator 5 and high-pressure heater 6 in turn, and then enters botler 1. The steam extraction pipelines of each heater are connected with steam turbine unit 2, and the cold side of heat-conducting oil-water heat exchanger 7 is connected with high-pressure heater 6 in parallel. À first control valve 101 is arranged on this branch. The outlet of the solar collector 8 is connected with the hot side inlet of the heat- conducting oil-water heat exchanger 7, which is connected with the inlet of the heat storage tank 9, which is connected with the inlet of the solar collector 8. The condensate branch at the outlet of the condenser 3 passes through the second control valve 102 and is connected with the inlet of the heat exchanger 10 after absorbing heat in the heat storage tank 9. The outlet of the heat exchanger 10 15 connected with the iniet of the heater 11, which is connected with the condenser 3.
The main working principle: the condensate water of the system is extracted and heated by low-pressure heater 4, deaerator 5 and high-pressure heater 6 in turn, and then enters boiler i to absorb heat, and then expands in steam turbine unit 2 and is condensed in condenser 3 to complete the cycle, The solar collector 8 of the system uses the sun to heat the heat~conducting oil, and part of the teed water absorbs heat in the heat-conducting oil-water heat exchanger 7 through parallel branches, and the beat~conducting oil after heat release is stored in the heat storage tank 9, and the condensed water branch heats the heat medium water in the heat exchanger 10 after heat absorption in the heat storage tank 9, which 1s used as a heat source for external heating in winter or driving absorption refrigeration in summer, and the hot water residual heat is recycled through the air heater 11;
The condensate bypass of the system can also be used as an important means for peak regulation of the unit, and when the load changes, the new steam quantity can be changed by changing the condensate bypass flow, so as to meet the load requirements; When the system is in high-load operation during the day, the first control valve 101 can be adjusted to make more feed water absorb solar heat, theroby reducing the heat absorption of the boier and coal consumption, and at the same time, the second control valve 102 can be adjusted down or closed to increase the new steam flow to meet the external load demand, and the excess heat of the solar collector 8 is stored in the heat storage tank ©; When the system is in low-load operation at night, the condensate branch and heater bypass feed water are heated by the heat stored in the heat storage tank 9, and the second control valve 102 can be adiusted to reduce the new steam flow to meet the external load demand
The above is only the preferred embodiment of the present invention, and does not limit the present invention in any form; Al ordinary technicians in the industry can smoothly implement the invention as shown in the attached drawings and described above, However, any equivalent changes made by those familiar with this field by using the technical contents disclosed above without departing from the scope of the technical scheme of the present invention are equivalent embodiments of the present invention; Meanwhile, any equivalent changes, modifications and evolutions made to the above embodiments according to the essential technology of the present invention still fall within the protection scope of the technical scheme of the present invention.
Claims (10)
- CLAIMS i. An energy efficient utilization system of a coal-fired unit coupled with solar energy, characterized by comprising a boiler (1), a steam turbine unit (2), a condenser (3), a heating unit, a heat-conducting oil-water heat exchanger (73, a heating unit, a solar collector (8) and a heat storage tank (9); the outlet of the boiler (1) is connected with the inlet of the steam turbine unit (2), the exhaust side of the steam turbine unit {2} is connected with the condenser {3}, and the outlet water supply pipeline of the condenser {3} is connected with the heater unit and the boiler (13 in turn, the heat-conducting oil-water heat exchanger (7) is connected with a heater unit, the outlet of the solar collector (8) is connected with the hot side inlet of the heat conducting cil-water heat exchanger {7}, the hot-side outlet of the heat-conducting oii-water heat exchanger {7) is connected with the inlet of a thermal storage tank (9), the outlet of the thermal storage tank (93 is connected with the wolet of a solar collector (3), the condensate-side outlet of the condenser (3) ts connected with the water-side inlet of the thermal storage tank {9}, the water side outlet of the heat storage tank (9) is sequentially provided with a heat exchanger {103 and an air beater (113, and the outlet of the air heater (11} 18 connected with the condenser {39
- 2. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim 1, the heater unit comprises a low-pressure heater {4} and a high-pressure beater (6), the outlet water supply pipeline of the condenser (3) is connected with the inlet of a low-pressure heater {4} and a high-pressure heater (6) in turn, and the outlet of the high-pressure heater {6} is communicated with the inlet of the boder (1).
- 3. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim: 2, à deacrator (3) 15 arranged between the tow-pressure heater (4) and the high- pressure heater (63,
- 4. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim 3, the steam extraction side of the steam turbine unit {2} is respectively connected with a low-pressure heater (4), a deaerator (5) and a high-pressure heater (6) through steam extraction pipelines.
- 5. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim 2, the cold side of the heat-conducting où-water heat exchanger (73 15 connected in parallel with the high-pressure heater (6).
- &. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim 5, a first control valve {101} is arranged between the inlet of the high-pressure beater (6) and the connecting pipeline of the cold-side inlet of the heat-conducting oil-water heat exchanger (7).
- 7. The energy efficient utiization system of a coal-fired unit coupled with solar energy, 43 claimed in claim 1, a second control valve (102) is arranged between the condensed water outlet branch of the condenser (3) and the water side inlet of the heat storage tank (9).
- 8. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim 1, the cold air side inlet of the air heater (11) is connected with a cold air source, and the hot air side outlet of the air heater (113 is connected with an air preheater,
- 9. The energy efficient utilization system of a coal-fired unit coupled with solar energy, as claimed in claim 1, the heat exchanger (10) is connected to à heat user for external heating in winter or a heat source for driving absorption refrigeration in summer.
- 10. Au operation method of an energy efficient utilization system of a coal-fired unit coupled with solar energy, which is based on the energy efficient utilization system of a coal- fired unit coupled with solar energy according to claim 1-9, charactenzed by comprising the condensed water is heated by steam extraction through the heating unit in turn, then enters the boiler {1} to absorb heat, and then expands in the steam turbine unit {2} to do work, and then is condensed in the condenser (33 to complets the cycle, in addition, the solar collector (83 uses the sun to heat the heat transfer oil, part of the teed water absorbs heat in the heat transfer o1i- water heat exchanger (7) through parallel branches, the heat transfer oil after heat release is stored in the heat storage tank (©), the condensed water branch heats the heat medium water in the heat exchanger (10) after absorbing heat in the heat storage tank (9), and the hot water residual heat is recycled through the air heater (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU504287A LU504287B1 (en) | 2023-05-22 | 2023-05-22 | Energy efficient utilization system for coal-fired unit coupled with solar energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| LU504287A LU504287B1 (en) | 2023-05-22 | 2023-05-22 | Energy efficient utilization system for coal-fired unit coupled with solar energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU504287B1 true LU504287B1 (en) | 2023-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU504287A LU504287B1 (en) | 2023-05-22 | 2023-05-22 | Energy efficient utilization system for coal-fired unit coupled with solar energy |
Country Status (1)
| Country | Link |
|---|---|
| LU (1) | LU504287B1 (en) |
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2023
- 2023-05-22 LU LU504287A patent/LU504287B1/en active IP Right Grant
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