CN214221413U - Solar energy coupling organic Rankine cycle power generation and air compression system - Google Patents
Solar energy coupling organic Rankine cycle power generation and air compression system Download PDFInfo
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- CN214221413U CN214221413U CN202120015169.XU CN202120015169U CN214221413U CN 214221413 U CN214221413 U CN 214221413U CN 202120015169 U CN202120015169 U CN 202120015169U CN 214221413 U CN214221413 U CN 214221413U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The invention relates to a solar energy coupling organic Rankine cycle power generation and air compression system. The solar energy coupling organic Rankine cycle power generation and air compression system comprises a working medium loop system, an air compression system and a cooling water system. The working medium loop system comprises a working medium pump, a preheater, a heat regenerator, a solar evaporator, a turbine generator set and a condenser. All the devices are sequentially connected through a working medium pipeline to form a closed loop. The air compression system comprises a normal-pressure air inlet, an air compressor, a preheater and a compressed air outlet which are sequentially connected through an air pipeline. The cooling water system comprises a cooling water inlet, a condenser and a cooling water outlet which are sequentially connected through a cooling water pipeline. According to the solar energy coupling organic Rankine cycle power generation and air compression system, solar energy is used for evaporating organic working media, electric energy is output through an organic Rankine cycle, meanwhile, the air compressor is pushed to generate compressed air, the organic working media are preheated through the temperature of the compressed air, the cooling requirement before compressed air energy storage is met, waste heat is fully recycled, and the energy recycling efficiency of the system is improved.
Description
Technical Field
The invention relates to the technical field of solar power generation and the field of gas compression, in particular to a solar energy coupling organic Rankine cycle power generation and air compression system.
Background
Energy is an important foundation of social development, and with the development of economy and the continuous improvement of social demand, the demand of people on energy is continuously increased. Among them, the electric power is particularly important in modern production and life. Currently, about 65% of the world's electricity is provided by fossil fuels, 20% by nuclear power plants, and the remainder by renewable energy sources, such as solar, hydro, biomass, wind, and geothermal energy. With the exhaustion of fossil energy, the cost and difficulty of exploitation become greater and greater, and under the dual pressure of energy and environment, the dependence on the fossil energy is reduced, and the search for replaceable new energy is the inevitable choice of human beings at present.
China is one of the most abundant countries of solar energy resources, the annual sunshine hours are more than 2000 hours in the areas with the total area of more than 2/3 in China, and the annual radiation quantity is 5000MJ/m2The above. According to the analysis of statistical data, the total amount of solar radiation received by the land area of China per year is 3.3 multiplied by 103~8.4×103 MJ/m2Equivalent to 24000 million tons of standard coal reserves, so that the research on the solar power generation technology has important significance on the continuous development of China and even all mankind. In recent years, all countries pay attention to research, development and popularization of new solar energy technology, but due to low solar energy flux density and strong dispersibility, a medium-temperature heat source and a low-temperature heat source can be obtained more easily by applying solar energy, and the solar energy is organically utilizedThe rankine cycle can utilize this portion of the solar heat source.
Compressed air energy storage is the novel energy storage mode that appears internationally, and in the in-process of electricity generation, the generator links to each other with the compressor, and abundant electric power drives the compressor and does work to the air, uses the electric energy in compressed air at electric wire netting load valley period. In the process of air compression, the distance between molecules becomes small, intermolecular collision becomes violent, mechanical work of the compressor is converted into internal energy of air, and the temperature of the compressed air is increased. Generally, high-temperature compressed air is cooled by a condenser, then is sealed in a scrapped mine, an air storage tank, a cave, an expired oil gas well or a newly-built air storage well under high pressure, and is released to push a turbine to generate power in the peak period of the load of a power grid. In this process, if the heat of the high-temperature compressed air is recovered and utilized in an appropriate manner, the energy consumption can be further reduced, and the energy utilization rate can be improved.
Disclosure of Invention
The invention aims to provide a solar energy coupling organic Rankine cycle power generation and air compression system which utilizes solar energy with low energy flow density and strong dispersibility as a heat source to generate power and produce compressed air for air energy storage.
In order to achieve the purpose, the invention provides the following technical scheme: a solar energy coupling organic Rankine cycle power generation and air compression system comprises a working medium loop system, an air compression system and a cooling water system; the working medium loop system comprises a working medium pump, a preheater, a heat regenerator, a solar evaporator, a turbine generator set and a condenser, and all the devices are sequentially connected through working medium pipelines to form a closed loop; the air compression system comprises a normal-pressure air inlet, an air compressor, a preheater and a compressed air outlet which are sequentially connected through an air pipeline; the cooling water system comprises a cooling water inlet, a condenser and a cooling water outlet which are sequentially connected through a cooling water pipeline; the working medium loop system and the air compression system are coaxially and directly connected through a turbine generator set and an air compressor; and the working medium loop system is coupled with the cooling water system through a condenser.
The working medium pump outlet of the working medium loop system is connected with a working medium inlet of the preheater through a working medium pipeline, a working medium outlet of the preheater is connected with a working medium inlet of a cold flow side of the heat regenerator through the working medium pipeline, a working medium outlet of the cold flow side of the heat regenerator is connected with a working medium inlet of the solar evaporator through the working medium pipeline, a working medium outlet of the solar evaporator is connected with a working medium inlet of the turbine generator set through the working medium pipeline, a working medium outlet of the turbine generator set is connected with a working medium inlet of a hot flow side of the heat regenerator, a working medium outlet of the hot flow side of the heat regenerator is connected with a working medium inlet of the condenser through the working medium pipeline, and a working medium outlet of the condenser is connected with the working medium pump inlet through the working medium pipeline to form a closed loop.
According to the solar-coupled organic Rankine cycle power generation and air compression system, solar energy transmits heat to an organic working medium through a solar heater of a solar evaporator to provide energy for a turbine generator set, the working medium providing the energy for the turbine generator set serves as a heat flow working medium to transmit waste heat to a cold flow working medium passing through a preheater again through a regenerator, the heat flow working medium passing through the regenerator sequentially passes through a condenser, a working medium pump and the preheater again and then enters the regenerator as a cold flow working medium to absorb the waste heat of the heat flow working medium, the cold flow working medium passing through the regenerator enters the solar evaporator, and the processes are repeated to continuously generate power and generate compressed air.
The aforesaid is based on organic rankine cycle electricity generation of solar energy coupling and air compression system, turbo generator set's motor and air compressor are coaxial directly to be linked, drive air compressor and compress the air, at air compression's in-process, the distance between the molecule diminishes, the molecule collision aggravates, compressed mechanical energy turns into gaseous internal energy, gas temperature rises, high temperature compressed air preheats the working medium through the pre-heater, both produced normal atmospheric temperature compressed air, the temperature of working medium has been improved again, make full use of waste heat resource.
The solar energy power generation device has the beneficial effects that the solar energy is utilized for power generation, so that the consumption of fossil fuel can be reduced; the compressed air energy storage technology is coupled, waste heat generated in the compressed air process is recycled, waste heat discharged to the environment is reduced, and the utilization efficiency of solar energy is improved.
Drawings
Fig. 1 is a schematic flow diagram of a solar-coupled organic rankine cycle power generation and air compression system according to the present invention.
In the figure: 1. a working medium pump; 2. a preheater; 3. a heat regenerator; 4. a solar evaporator; 5. a turbine generator set; 6. an air compressor; 7. a condenser; 8. a normal pressure air inlet; 9. a compressed air outlet; 10. a cooling water inlet; 11. and a cooling water outlet.
Detailed Description
The core of the invention is to provide a solar energy coupling organic Rankine cycle power generation and air compression system, and by adopting the system, electric energy can be output by utilizing solar energy and compressed air can be generated, meanwhile, the high-temperature compressed air can be cooled, and waste heat is recovered to improve the heat efficiency of the system, save energy and reduce consumption.
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail by the following embodiments with reference to the accompanying drawings.
Example 1 in one embodiment, as shown in fig. 1, a solar coupled organic rankine cycle power generation and air compression system comprises a working medium loop system, an air compression system and a cooling water system; the working medium loop system comprises a working medium pump (1), a preheater (2), a heat regenerator (3), a solar evaporator (4), a turbine generator set (5) and a condenser (7), and all the devices are sequentially connected through working medium pipelines to form a closed loop; the air compression system comprises a normal-pressure air inlet (8), an air compressor (6), a preheater (2) and a compressed air outlet (9), which are connected in sequence through an air pipeline; the cooling water system comprises a cooling water inlet (10), a condenser (7) and a cooling water outlet (11), which are connected in sequence through a cooling water pipeline; the solar energy is coupled with an organic Rankine cycle power generation and air compression system, and a working medium loop system is coaxially and directly connected with the air compression system through a turbine generator set (5) and an air compressor (6); the working medium loop system is coupled with the cooling water system through a condenser (7).
Specifically, a working medium pump outlet of the working medium loop system is connected with a working medium inlet of the preheater through a working medium pipeline, a working medium outlet of the preheater is connected with a working medium inlet on a cold flow side of the regenerator through the working medium pipeline, a working medium outlet on a cold flow side of the regenerator is connected with a working medium inlet of the solar evaporator through the working medium pipeline, a working medium outlet of the solar evaporator is connected with a working medium inlet of the turbine generator set through the working medium pipeline, a working medium outlet of the turbine generator set is connected with a working medium inlet on a hot flow side of the regenerator, a working medium outlet on a hot flow side of the regenerator is connected with a working medium inlet of the condenser through the working medium pipeline, and a working medium outlet of the condenser is connected with the working medium pump inlet through the working medium pipeline to form a closed loop.
The solar energy transfers heat to the organic working medium through a solar heater of the solar evaporator to provide energy for the turbine generator set, the working medium providing energy for the turbine generator set is used as a heat flow working medium to transfer waste heat to a cold flow working medium passing through the preheater again through the heat regenerator, the heat flow working medium passing through the heat regenerator sequentially passes through the condenser, the working medium pump and the preheater again, and then enters the heat regenerator as a cold flow working medium to absorb the waste heat of the heat flow working medium, the cold flow working medium passing through the heat regenerator enters the solar evaporator, and the processes are repeated to generate power and generate compressed air continuously. Turbo generator set's motor and air compressor are coaxial directly to be linked, drive air compressor and compress the air, and at air compression's in-process, the distance between the molecule diminishes, and molecule collision aggravation, compression mechanical energy turns into gaseous internal energy, and gas temperature rises, and high temperature compressed air preheats the working medium through the pre-heater, both produced normal atmospheric temperature compressed air, has improved the temperature of working medium again, make full use of waste heat resource.
The solar energy coupled organic Rankine cycle power generation and air compression system is characterized in that the annual direct radiation exposure is 1860kWh-2Collector area 1400m2The annual energy production is 19.5 ten thousand kWh, and 0.6Mpa compressed air 937 ten thousand Nm is obtained3。
Example 2. the solar coupled organic rankine cycle power generation and air compression system of this example is the same as example 1, except that the direct irradiation dose and the heat collector area of the invention are the same, and the direct irradiation dose is received all year roundCharacterized by an illumination of 1200kWh @ m-2Collector area 2000m2The annual energy generation amount is 12 ten thousand kWh, and 206 ten thousand Nm can be generated3From 0.6MPa to 2.8 MPa.
The description of the embodiments of the present invention is only for the purpose of assisting understanding of the core idea of the present invention, and is not intended to limit the embodiments of the present invention. It should be understood that any modification, equivalent replacement, and improvement made by those skilled in the art without departing from the principle of the present invention shall be included in the protection scope of the claims of the present invention.
Claims (2)
1. A solar energy coupling organic Rankine cycle power generation and air compression system is characterized by comprising a working medium loop system, an air compression system and a cooling water system; the working medium loop system comprises a working medium pump, a preheater, a heat regenerator, a solar evaporator, a turbine generator set and a condenser, and all the devices are sequentially connected through working medium pipelines to form a closed loop; the air compression system comprises a normal-pressure air inlet, an air compressor, a preheater and a compressed air outlet which are sequentially connected through an air pipeline; the cooling water system comprises a cooling water inlet, a condenser and a cooling water outlet which are sequentially connected through a cooling water pipeline; the working medium loop system and the air compression system are coaxially and directly connected through a turbine generator set and an air compressor; and the working medium loop system is coupled with the cooling water system through a condenser.
2. The solar coupled organic Rankine cycle power generation and air compression system according to claim 1, wherein a working medium pump outlet of the working medium loop system is connected with a working medium inlet of a preheater through a working medium pipeline, a working medium outlet of the preheater is connected with a working medium inlet on a cold flow side of a regenerator through a working medium pipeline, a working medium outlet on a cold flow side of the regenerator is connected with a working medium inlet of a solar evaporator through a working medium pipeline, a working medium outlet of the solar evaporator is connected with a working medium inlet of a turbine generator set through a working medium pipeline, a working medium outlet of the turbine generator set is connected with a working medium inlet on a hot flow side of the regenerator, a working medium outlet on a hot flow side of the regenerator is connected with a working medium inlet of a condenser through a working medium pipeline, and a working medium outlet of the condenser is connected with the working medium pump inlet through a working medium pipeline to form a closed loop.
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| CN202120015169.XU CN214221413U (en) | 2021-01-05 | 2021-01-05 | Solar energy coupling organic Rankine cycle power generation and air compression system |
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| CN202120015169.XU CN214221413U (en) | 2021-01-05 | 2021-01-05 | Solar energy coupling organic Rankine cycle power generation and air compression system |
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