CN113638784A - Solar combined heat and power system based on organic Rankine cycle and boiler auxiliary heating - Google Patents
Solar combined heat and power system based on organic Rankine cycle and boiler auxiliary heating Download PDFInfo
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- CN113638784A CN113638784A CN202110979346.0A CN202110979346A CN113638784A CN 113638784 A CN113638784 A CN 113638784A CN 202110979346 A CN202110979346 A CN 202110979346A CN 113638784 A CN113638784 A CN 113638784A
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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
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
- E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
- E04H1/1205—Small buildings erected in the open air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/02—Domestic hot-water supply systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/301—Detergents, surfactants
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/20—Solar thermal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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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
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Abstract
The invention discloses a solar combined heat and power system based on organic Rankine cycle and boiler auxiliary heating, wherein solar energy is fully utilized by a solar heat collector to obtain high-temperature hot water, and the high-temperature hot water is stored and used for bathroom water; the auxiliary boiler heating device is coupled with the solar house system and is used as an external heat source to supply heat to obtain hot water when the water supply of the bathroom is not in demand; the organic Rankine cycle system comprises a first organic Rankine cycle system and a second Rankine cycle system, the first organic Rankine cycle system is connected with a bathroom water outlet, and the first organic Rankine cycle system recovers and utilizes the heat of the used hot water and converts the heat into electric energy for storage; the second Rankine cycle system is connected with the interior of the bathroom, recovers and utilizes waste heat accumulated in air in the bathroom and converts the waste heat into electric energy to be stored. The solar house system and the boiler auxiliary heating device are coupled with the organic Rankine cycle system to form the self-energy-feeding solar house bathroom.
Description
Technical Field
The invention relates to the technical field of solar energy and low-temperature waste heat utilization, in particular to a solar heat and power combined supply system based on organic Rankine cycle and boiler auxiliary heating.
Background
The field research shows that people only consume 10 ℃ of temperature difference in the bathing process, but the temperature of the bathing water needs to be raised by 30 ℃ when the bathing water is heated, and 2/3 energy is wasted if the bathing sewage is directly discharged. Meanwhile, the heating mode of the bath water mainly depends on burning natural gas to provide heat, the required gas quantity is large, and discharged hot air and waste water are not thermally recycled, so that thermal pollution is caused. In fact, the temperature of daily bath hot water is enough at 40-50 ℃, if coal, oil or natural gas which can burn thousands of high temperature is selected to fulfill the simple low-temperature heating requirement, which is obviously a great energy waste, and the coal, oil and natural gas can generate a great amount of heat loss and waste gas in the combustion process, which can cause air pollution, thus being neither scientific nor uneconomical.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a solar combined heat and power system based on organic Rankine cycle and boiler auxiliary heating. The organic Rankine cycle system is divided into two subsystems, and generates an electric load by absorbing waste heat of water in a bathroom and waste heat of air, so that the electric load is provided for a boiler auxiliary system and a solar house system. When the heat generated by the solar house system is not in demand, the auxiliary boiler heating device can be used as an external heat source to heat tap water, so that sufficient bathing water is provided.
The technical scheme adopted by the invention is as follows:
solar thermal power cogeneration system based on organic rankine cycle and boiler auxiliary heating includes: the system comprises a solar house system, a boiler auxiliary heating device, an organic Rankine cycle system, an air source heat pump device and a water body purification and recycling system; the solar house system comprises a solar heat collector, and high-temperature hot water is obtained by fully utilizing solar energy through the solar heat collector and is stored for water use in a bathroom; the auxiliary boiler heating device is coupled with the solar house system and is used as an external heat source to supply heat to obtain hot water when the water supply of the bathroom is short;
the organic Rankine cycle system comprises a first organic Rankine cycle system and a second Rankine cycle system, the first organic Rankine cycle system is connected with a bathroom water outlet, and the first organic Rankine cycle system recovers and utilizes the heat of the used hot water and converts the heat of the used hot water into electric energy to be stored; the second Rankine cycle system is connected with the interior of the bathroom, recovers and utilizes waste heat accumulated in air in the bathroom and converts the waste heat into electric energy to be stored.
Further, the first organic Rankine cycle system is coupled with the water body purification and recycling system and used for purifying the bathroom water after heat exchange with the heat exchanger and storing and using the bathroom water.
Further, the water purification and reuse system comprises a water purification and storage device, wherein the water purification and storage device firstly utilizes coagulation filtration to pretreat the water for the bathroom, and then adopts a biological activated carbon treatment process to further purify the water.
Furthermore, the solar heat collector is connected with a tap water supply device, cold water is injected into the solar heat collector by the tap water supply device, and a hot water outlet of the solar heat collector is connected with a hot water storage device to store heated hot water;
further, the boiler auxiliary heating device comprises a boiler heater, the boiler heater is connected with a tap water supply device, and the tap water supply device is used for supplying tap water to the boiler heater and storing heated hot water in the hot water storage.
Further, the first organic Rankine cycle system comprises a heat exchanger, a first turbine, a first generator, a first electricity storage device, a first condenser and a first working medium pump; one end of the heat exchanger is connected with a bathroom water outlet, and the other end of the heat exchanger is connected with a water body purification and recycling system; a circulating working medium outlet of the heat exchanger is sequentially connected with a first turbine, a first condenser and a first working medium pump to a circulating working medium inlet of the heat exchanger, the first turbine is sequentially connected with a first generator and a first electricity storage device, and waste heat of bathroom water is converted into electric energy through working.
Further, the system comprises an evaporator, a second turbine, a second generator, a second electricity storage device, a second condenser, a second working medium pump and an air source heat pump; the air source heat pump is connected with the inside of the bathroom and used for accumulating waste heat in the bathroom; an outlet of the air source heat pump is sequentially connected with an evaporator, a second turbine, a second condenser and a second working medium pump to an inlet of the air source heat pump, the second turbine is sequentially connected with a second generator and a second electricity storage device, and waste heat of hot air in the bathroom is converted into electric energy through working.
Further, the working medium selected by the organic Rankine cycle system is R245fa, R123 or a mixture of R245fa and R123.
Further, the electricity storage device is used for supplying energy to the electricity utilization device in the solar combined heat and power system.
The invention has the beneficial effects that:
the invention relates to a solar combined heat and power system based on organic Rankine cycle and boiler auxiliary heating. Compared with the prior art, the solar house bathroom is additionally provided with the organic Rankine cycle system, the air source heat pump device and the water body purification and recycling system, and the solar house system, the boiler auxiliary heating device and the organic Rankine cycle system are coupled to form a self-energy-feeding solar house bathroom. The solar house system can heat tap water by absorbing heat in solar energy, and bath hot water is provided for a bathroom. The organic Rankine cycle system is divided into two subsystems, and generates an electric load by absorbing waste heat of water in a bathroom and waste heat of air, so that the electric load is provided for a boiler auxiliary system and a solar house system. When the heat generated by the solar house system is not in demand, the auxiliary boiler heating device can be used as an external heat source to heat tap water, so that sufficient bathing water is provided.
Drawings
FIG. 1 is a schematic structural diagram of a solar cogeneration system based on organic Rankine cycle and boiler auxiliary heating;
in the figure: 1-a solar heat collector, 2-a first water pump, 3-an electricity utilization device, 4-a water body purification and storage device, 5-a second water pump, 6-a heat exchanger, 7-a first turbine, 8-a first generator, 9-a first electricity storage device, 10-a first condenser, 11-a first working medium heat pump, 12-an air source heat pump, 13-a second working medium heat pump, 14-a second condenser, 15-an evaporator, 16-a second turbine, 17-a second generator, 18-a second electricity storage device, 19-a hot water storage device, 20-a thermometer, 21-a boiler heater and 22-a tap water supply device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It should be noted that the connection in this application may be a direct connection of the pipes or an indirect connection.
As shown in fig. 1, an embodiment of the present invention provides a solar cogeneration system based on organic rankine cycle and boiler auxiliary heating, which is characterized in that the solar cogeneration system includes: the system comprises a solar house system, a boiler auxiliary heating device organic Rankine cycle system, an air source heat pump device and a water body purification and recycling system. The solar heat and power cogeneration system based on organic Rankine cycle and boiler auxiliary heating is coupled with a solar house system, a boiler auxiliary heating device and an organic Rankine cycle system to form a self-energy-feeding solar house bathroom.
The solar house system comprises a solar heat collector 1, a first water pump 2, an electric device 3, a hot water storage 19, a tap water supply device 22 and an insulated pipeline. The solar heat collector 1 is arranged at the top end of a solar house system, so that more sunlight can be absorbed conveniently. The solar heat collector 1 mainly comprises four parts, namely a heat collecting plate, a transparent cover plate, a heat insulating layer and a shell, and mainly has the function of collecting heat energy in sunlight so as to heat water in a pipeline of the solar heat collector 1, and the heated water enters a hot water storage 19. The first water pump 2 is installed between the solar heat collector 1 and the tap water supply device 22 to provide power for the whole water circulation. The electric device 3 is installed inside a bathroom and mainly comprises a lighting system, a blower and the like in the bathroom. The hot water storage 19 is arranged in the middle of the solar house system, is wrapped by special materials, can play a role in heat preservation and heat insulation, has good strength and corrosion resistance, and is used for receiving and storing water heated by the solar heat collector 1. A water valve is arranged between the solar heat collector 1 and the hot water storage 19 and can be used for controlling the flow. The tap water supply device 22 is installed at a left position of the solar house system to supply a tap water source to the solar collector 1. The pipeline is subjected to heat preservation and heat insulation treatment, so that heat loss can be effectively reduced, and the utilization rate is improved.
The auxiliary boiler heating device is coupled with the solar house system and used as an external heat source for supplying heat when the water supply in the bathroom is short. The boiler auxiliary heating device comprises a boiler heater 21 and a thermometer 20. The boiler heater 21 is installed on the left side of the solar house system, and can be used as an auxiliary heat source to provide heat load for a bathroom, so that the electric load is consumed. The thermometer 20 is installed between the boiler heater 21 and the hot water reservoir 19 for sensing the temperature of water. The tap water supply device 22 is used to supply tap water to the boiler heater 21, and the flow rate of the tap water can be controlled by a valve. The hot water storage 19 is used for storing the water heated by the boiler heater 21, and the flow rate can be controlled by a valve.
The organic rankine cycle system includes two subsystems: a first organic Rankine cycle system and a second Rankine cycle system. The working medium selected by the organic Rankine cycle system is R245fa, R123 or a mixture of R245fa and R123. The organic Rankine cycle system is coupled with the solar house system and the boiler auxiliary heating device, and generates power by absorbing air waste heat and water waste heat in the solar house system to provide electric load for the solar house system and the boiler auxiliary heating device.
The first organic Rankine cycle system comprises a heat exchanger 6, a first turbine 7, a first generator 8, a first electricity storage device 9, a first condenser 10 and a first working medium pump 11. The heat exchanger 6 is arranged between the first turbine 7 and the first working medium pump 11 and is used for absorbing heat in the bathroom water and transferring the heat to the organic working medium. The first turbine 7 is installed between the first condenser 10 and the heat exchanger 6, and is used for converting energy in the organic working medium into mechanical energy to drive the first generator 8 to generate electricity. The first condenser 10 is arranged between the first working medium pump 11 and the first turbine 7 and is used for fully condensing the organic working medium and returning the organic working medium to the heat exchanger 6. The first working medium pump 11 is arranged between the heat exchanger 6 and the first condenser 10 for powering the cycle. The first generator 8 is installed between the first turbine 7 and the first electricity storage device 9, and is used for converting mechanical energy into electric energy and storing the electric energy in the first electricity storage device 9.
The second organic Rankine cycle system comprises an evaporator 15, a second turbine 16, a second generator 17, a second electricity storage device 18, a second condenser 14 and a second working medium pump 13. The evaporator 6 is arranged between the second turbine 16 and the second working medium pump 13 and is used for absorbing the residual heat accumulated in the air source heat pump device 12 and transferring the heat to the organic working medium. The second turbine 16 is installed between the second condenser 14 and the evaporator 15, and is used for converting energy in the organic working medium into mechanical energy to drive the second generator 17 to generate electricity. The second condenser 14 is installed between the second working medium pump 13 and the second turbine 16, and is used for fully condensing the organic working medium and returning the organic working medium to the evaporator 15. The second working medium pump 13 is installed between the evaporator 15 and the second condenser 14 for providing power for circulation. The second generator 17 is installed between the second turbine 16 and the second electric storage device 18, and converts mechanical energy into electric energy to be stored in the second electric storage device 18.
The first electrical storage device 9 is connected in series with the second electrical storage device 18 to provide electrical load for the boiler heater 21 and the solar house system.
The air source heat pump device 12 is installed between the second organic Rankine cycle system and the solar house system and used for converting the waste heat of low-level air in the solar house system into high-level heat energy and providing heat for the second organic Rankine cycle. The air source heat pump is composed of an evaporator, a compressor, an expansion valve, a condenser and the like.
The water body purification and reuse system is coupled with the first organic Rankine cycle and is used for purifying the bathroom water after heat exchange with the heat exchanger 6 and storing and using the bathroom water. The water body purification and reuse system comprises a second water pump 5 and a water body purification and storage device 4. And the second water pump 5 is arranged between the heat exchanger 6 and the water body purification and storage device 4 and provides power for water body exchange. The water body purification and storage device 4 is used for purifying and storing the bathroom drainage. The water purification and storage device 4 firstly utilizes coagulation filtration to pretreat the water for the bathroom, and then adopts a biological activated carbon treatment process to further purify the water, so that turbid and suspended solid, anionic detergent (LAS) and organic matters can be removed, and germs can be killed. The water quality of the water body purification and recycling system reaches the water quality standard of the domestic miscellaneous water, and the system can be used as water for greening, sprinkling, car washing, toilet flushing and the like. The cost is low, and only 0.3 yuan is needed for treating each ton of sewage.
The working principle and the process of the invention are as follows:
the solar cogeneration system based on organic rankine cycle and boiler auxiliary heating shown in fig. 1 is taken as an example and has the following working processes:
the low-temperature tap water in the tap water supply device 22 is driven by the first water pump 2 to enter the solar thermal collector 1 through a pipeline for heat exchange, after heat transfer, the high-temperature tap water can directly flow into the hot water storage 19 through the pipeline due to gravity for storage, and the valve can be used for adjusting the flow rate of the tap water in the circulation.
When the supply of hot water in the hot water storage 19 is short, a valve is opened, low-temperature tap water in the tap water supply device 22 is introduced into the boiler heater 21 through a pipeline, the boiler heater 21 converts an electric load into a thermal load, and the low-temperature tap water is heated into high-temperature tap water. The valve is opened and the high temperature tap water in the boiler heater 21 is piped to the hot water reservoir 19. In this process, the heating temperature control may be performed by the thermometer 20.
A large amount of hot air and hot waste water are generated in the bathing process and can be recycled by utilizing an organic Rankine cycle system and an air source heat pump device. The heat of the hot waste water after bathing is transferred to the organic working medium through the heat exchanger 6, the organic working medium is heated and expanded to flow out of the heat exchanger 6, and then the organic working medium enters the first turbine 7 to do work, so that the heat energy is converted into mechanical energy, the first generator 8 is driven to work, and an electric load is generated and stored in the first electricity storage device 9. The organic working medium after acting enters a first condenser 10 for medium-pressure condensation, and returns to the heat exchanger 6 again to absorb heat under the drive of a first working medium pump 11. The hot air after bathing is not easy to be directly utilized, firstly, the air source heat pump 12 is used for converting low-level heat energy in the air into high-level heat energy, then the heated working medium enters the evaporator 15 and transfers the heat energy to the organic working medium, the organic working medium is discharged from the evaporator 15 after being heated and enters the second turbine 16 for doing work, the heat energy is converted into mechanical energy, the second generator 17 is driven to work, and electric load is generated and stored in the second electricity storage device 18. The organic working medium after acting enters a second condenser 14 for medium-pressure condensation, and returns to the evaporator 15 again to absorb heat under the drive of a second working medium pump 13. The first electrical storage device 9 is connected in series with the second electrical storage device 18 to provide electrical load for the boiler heater 21 and the solar house system.
The low-temperature bathing wastewater discharged from the heat exchanger 6 enters the water body purification and storage device 4 under the driving of the second water pump 5, and the treated water source can be used as water for greening, sprinkling, car washing, toilet flushing and the like. The cost is low, and only 0.3 yuan is needed for treating each ton of sewage.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (9)
1. Solar heat and power cogeneration system based on organic rankine cycle and boiler auxiliary heating, its characterized in that includes: the system comprises a solar house system, a boiler auxiliary heating device, an organic Rankine cycle system, an air source heat pump device and a water body purification and recycling system; the solar house system comprises a solar heat collector, and high-temperature hot water is obtained by fully utilizing solar energy through the solar heat collector and is stored for water use in a bathroom; the auxiliary boiler heating device is coupled with the solar house system and is used as an external heat source to supply heat to obtain hot water when the water supply of the bathroom is short;
the organic Rankine cycle system comprises a first organic Rankine cycle system and a second Rankine cycle system, the first organic Rankine cycle system is connected with a bathroom water outlet, and the first organic Rankine cycle system recovers and utilizes the heat of the used hot water and converts the heat of the used hot water into electric energy to be stored; the second Rankine cycle system is connected with the interior of the bathroom, recovers and utilizes waste heat accumulated in air in the bathroom and converts the waste heat into electric energy to be stored.
2. The solar cogeneration system based on organic rankine cycle and boiler auxiliary heating according to claim 1, wherein the first organic rankine cycle system is coupled with a water body purification and reuse system for purifying bathroom water after exchanging heat with a heat exchanger and storing the water for use.
3. The solar cogeneration system based on organic Rankine cycle and boiler auxiliary heating according to claim 2, wherein the water body purification and reuse system comprises a water body purification and storage device, the water body purification and storage device firstly pretreats the bathroom water by coagulation filtration and then further purifies the water body by a biological activated carbon treatment process.
4. The solar cogeneration system based on organic rankine cycle and boiler auxiliary heating according to claim 1, wherein the solar collector is connected to a tap water supply device, cold water is injected into the solar collector from the tap water supply device, and a hot water outlet of the solar collector is connected to a hot water storage to store heated hot water.
5. The solar cogeneration system based on organic Rankine cycle and boiler auxiliary heating according to claim 1, wherein the boiler auxiliary heating device comprises a boiler heater, the boiler heater is connected with a tap water supply device, and the tap water supply device is used for supplying tap water to the boiler heater and storing heated hot water in a hot water storage.
6. The organic Rankine cycle and boiler auxiliary heating based solar cogeneration system according to claim 5, characterized in that the first organic Rankine cycle system comprises a heat exchanger, a first turbine, a first generator, a first electricity storage device, a first condenser, a first working medium pump; one end of the heat exchanger is connected with a bathroom water outlet, and the other end of the heat exchanger is connected with a water body purification and recycling system; a circulating working medium outlet of the heat exchanger is sequentially connected with a first turbine, a first condenser and a first working medium pump to a circulating working medium inlet of the heat exchanger, the first turbine is sequentially connected with a first generator and a first electricity storage device, and waste heat of bathroom water is converted into electric energy through working.
7. The solar cogeneration system based on organic rankine cycle and boiler auxiliary heating according to claim 1, characterized in that the system comprises an evaporator, a second turbine, a second generator, a second electricity storage device, a second condenser, a second working medium pump and an air source heat pump; the air source heat pump is connected with the inside of the bathroom and used for accumulating waste heat in the bathroom; an outlet of the air source heat pump is sequentially connected with an evaporator, a second turbine, a second condenser and a second working medium pump to an inlet of the air source heat pump, the second turbine is sequentially connected with a second generator and a second electricity storage device, and waste heat of hot air in the bathroom is converted into electric energy through working.
8. The solar cogeneration system based on organic Rankine cycle and boiler auxiliary heating according to claim 6 or 7, wherein the working medium selected by the organic Rankine cycle system is R245fa, R123 or a mixture of R245fa and R123.
9. The solar thermal power cogeneration system based on organic Rankine cycle and boiler auxiliary heating according to any one of claims 1 to 7, wherein the electricity storage device is used for supplying power to the electricity utilization device in the solar thermal power cogeneration system.
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CN103372371B (en) * | 2013-07-04 | 2015-07-08 | 天津大学 | System device for carbon capture through solar organic Rankine cycle auxiliary coal-fired power generation |
GB2547190A (en) * | 2016-02-03 | 2017-08-16 | St John Spencer Cave Piers | Heat storing and heat transfer systems |
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