CN103670970A - Combined cooling, heating and power device and method for gradient utilization of solar energy - Google Patents
Combined cooling, heating and power device and method for gradient utilization of solar energy Download PDFInfo
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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
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Abstract
The invention discloses a combined cooling, heating and power device and method for gradient utilization of solar energy. The device comprises a conduction oil pump, a solar thermal collector, a steam generator, a steam turbine or an expansion machine, a generator, a hot water heat exchanger, a solution heater, a condenser, a liquid storage tank, a working medium pump, a solution reheater and a solution dehumidification air conditioning unit. The device mainly comprises three loops which are respectively the conduction oil loop, the power cycle fluid loop and the solution loop. According to the combined cooling, heating and power device and method for gradient utilization of the solar energy, heat contained in a working medium after expansion is utilized in combination with the characteristic that a solution dehumidification air conditioner has high heat source adaptability (40-70 DEG C), so that output of coldness in a system in summer is realized, and heat exchange is conducted on the heat of the working medium after expansion in winter to meet the requirement for heating and hot water.
Description
Technical field
The invention belongs to Integrated Energy efficient technique of rainwater utilization scope, is a kind of cool and thermal power multiple-supplying method and device that solar energy is carried out to cascade utilization, is specifically related to the system of low temperature heat energy comprehensive utilization in solar energy.
Background technique
Solar energy is as a kind of important energy source in renewable and clean energy resource, inexhaustible, and its exploitation are subject to increasing attention.For the most direct utilization of solar water heater of utilization of solar energy, aspect generating, there are the technology such as high-temperature solar generating and solar energy power generating at present.High-temperature solar generating need to be obtained high temperature by the type of focusing, and often cost is relatively high.And the collection of middle low-temperature solar energy is relatively easy, initial cost is lower, and technical difficulty is also little, and therefore middle low-temperature solar generation technology receives increasing concern in recent years.Wherein organic Rankine circulating technology is the power cycle technology of low-temperature heat source in a kind of can effectively utilization, utilizes decompressor or steam turbine that the heat of drawing from thermal source is converted into power, drives generator generating.Working medium after overexpansion conventionally directly enters condenser and carries out condensation, then becomes liquid, and the medium belt that is directly condensed of condenser heat is wherein walked to discharge, and this mode means waste to a certain extent for the energy.And liquid desiccant air conditioning technology will realize continuous operation, need to regenerate to solution, and in regenerative process, need the pyrogen of uniform temperature to drive.In view of the wider feature of the regeneration of waste liquor temperature range of this kind of air-conditioning technical, the heat of the working medium after expanding is used for to the regeneration of solution, realize the comprehensive cascade utilization of the energy, make system realize the output of external cold simultaneously.
Summary of the invention
Goal of the invention: the object of this invention is to provide a kind of cool and thermal power multiple-supplying device of solar energy being realized to cascade utilization, efficiently utilize refrigeration, generating, the dehumidifying of solar energy, the device of heat supply, the solar energy of collection can be carried out to the output that step comprehensive utilization realizes cold and hot amount to solar energy for generating electricity simultaneously, realize cold-hot electirc linking.
Technological scheme: for solving the problems of the technologies described above, the invention provides a kind of cool and thermal power multiple-supplying device of solar energy being realized to cascade utilization, this device comprises Heat-transfer Oil Pump, solar thermal collector, steam generator, steam turbine or decompressor, generator, hot water heat exchanger, solution heater, condenser, liquid container, working medium pump, solution reheater, liquid desiccant air conditioning unit (12);
This device mainly comprises three kinds of loops, is respectively conduction oil loop, power cycle working medium loop and solution loop;
Wherein, in conduction oil loop, the outlet end of Heat-transfer Oil Pump and the entrance point of solar thermal collector are connected, the outlet end of solar thermal collector is connected with the oily side-entrance end of steam generator, the oily side outlet end of steam generator is surveyed entrance point with the oil of solution reheater and is connected, and the oil of solution reheater is surveyed outlet end and is connected with the entrance point of Heat-transfer Oil Pump;
In power cycle working medium loop, the working medium side outlet end of steam generator is connected with the entrance point of steam turbine or decompressor, the axle head of steam turbine or decompressor is connected with the axle head of generator, the outlet end of steam turbine or decompressor is connected with the entrance point of hot water heat exchanger and the entrance point of solution heater respectively, the sender property outlet end of hot water heat exchanger and solution heater is all connected with the entrance point of condenser, the outlet end of condenser is connected with the entrance point of liquid container, the outlet end of liquid container is connected with the entrance point of working medium pump, the outlet end of working medium pump is connected with the working medium side entrance point of steam generator,
In solution loop, the taphole end of liquid desiccant air conditioning unit is connected with the solution inlet port end of solution heater, the taphole end of solution heater is connected with the entrance point of liquid desiccant air conditioning unit with solution reheater respectively, and the solution inlet port end of solution reheater taphole end and liquid desiccant air conditioning unit is connected.
Preferably, in described solar thermal collector, directly using power cycle working medium as thermal medium, form direct-type system, or adopt conduction oil through heat exchanger, to transfer heat to cycle fluid formation indirection type system as thermal medium.
The present invention also provides a kind of cool and thermal power multiple-supplying method that solar energy is realized to cascade utilization, and the method comprises the steps: that the collected solar energy of solar thermal collector passes to the power cycle working medium in steam generator, makes it temperature rising and becomes steam; The working substance steam producing after heating enters steam turbine or decompressor, makes it externally acting and drives generator generating, output electric energy; By switch valve, make the exhaust of steam turbine or decompressor enter hot water heat exchanger, realize producing of hot water, for domestic hot-water or heating output; Or make the exhaust of steam turbine or decompressor enter solution heater, binding soln reheater makes solution heating realize regeneration, thereby drives liquid desiccant air conditioning unit to realize the output of cold.
Beneficial effect:
1, this device carries out cascade utilization to collected solar energy, and comprehensive utilization ratio gets a promotion;
2, binding soln dehumidifier/air-conditioning system, reclaims reasonable utilization to the high temperature section heat of condensation that should emit, and realizes the output of system cold;
3, can effectively utilize winter high temperature section heat of condensation to realize heat supply heating function.
Accompanying drawing explanation
Fig. 1 is device and the structural representation of the embodiment of the present invention 1.
Fig. 2 is device and the structural representation of the embodiment of the present invention 2.
Wherein have: Heat-transfer Oil Pump 1, solar thermal collector 2, steam generator 3, steam turbine 4, generator 5, hot water heat exchanger 6, solution heater 7, condenser 8, liquid container 9, working medium pump 10, solution reheater 11, liquid desiccant air conditioning unit 12.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention will be further described.
The present invention includes solar heat collector, organic Rankine cycle power device, solution dehumidifying air-conditioning device, domestic hot-water's device, Winter heat supply heating plant.At solar energy heat collecting module, employing heat conduction wet goods heat transfer medium, as heat absorption carrier, the solar energy of absorption is transported to heat exchanger and power cycle working medium carries out heat exchange or directly power cycle working medium is passed into heat collector absorbing solar energy.In organic Rankine power cycle, acting working medium becomes pressurized gas absorb heat in heat exchanger after, and pushing turbine or decompressor acting drive generator output electric energy.Working medium after expansion is first through solution heater or hot water heat exchanger, and the condenser of then the flowing through liquefy after medium condensation that is condensed, flows to afterwards liquid container and be pressed and delivered to steam generator by working medium pump.Summer in solution dehumidifying air-conditioning device, utilize organic Rankine cycle fluid after expansion with heat driving the regeneration of solution.Utilize this heat to drive liquid desiccant air conditioning, realize the output of refrigerating capacity; Winter, utilize organic Rankine cycle fluid after expansion with heat obtain the hot water of uniform temperature, be used to provide domestic hot-water and heat supply heating.This system is by carrying out effective cascade utilization to the solar energy of collecting, high temperature section is for organic Rankine circulating generation, working medium after expanding is still with a certain amount of low-temperature heat quantity, recycle this part heat energy in summer the regeneration of waste liquor for solution dehumidifying air-conditioning system, in direct heat transfer in winter, produce certain hot water and be used for realizing domestic hot-water or heat supply heating function.
A preferred embodiment of the present invention is: described solar heat collector is linked in sequence successively and is formed a circulation means by Heat-transfer Oil Pump, solar thermal collector and steam generator, the import of described steam generator is connected with described working medium pump, and the outlet of described steam generator is connected with described steam turbine or decompressor.In solar heat collector, adopt conduction oil for heat transfer carrier, the solar energy of absorption to be transported to steam generator as cycle fluid and carry out heat exchange with the low boiling working fluid of another power cycle, working medium becomes pressurized gas after absorbing heat, pushing turbine or decompressor acting, drive generator output electric energy.Working medium after expansion, flows into liquid container, then is pressed and delivered to steam generator by working medium pump by condenser liquefy working medium through solution heater or hot water heat exchanger.Form so complete organic Rankine power cycle.In solution heater part, draw heat in the working medium of dilute solution from expanding, solution temperature is increased, and can by control, the soln using pipeline in solution heater outlet port be linked to solution reheater according to operating mode and carry out heat exchange again, afterwards concentrated solution is inputted in solution dehumidification device and realized the dehumidifying of environment and refrigeration output.The output that cold water is realized domestic hot-water and winter heating hot water heats with heat in working medium institute after utilize expanding in described hot water heat exchanger.
Another kind of scheme of the present invention is: described solar heat collector is directly solar thermal collector, the import of described solar thermal collector is connected with described working medium pump, the outlet of described solar thermal collector is connected with described steam turbine or decompressor, directly power cycle working medium is passed into heat collector absorption solar energy and circulates.
In order further to utilize heat, the cooling medium in described condenser is water, can be used by the thermal source using heat of condensation as low-temperature water heating.
This invention adopts low boiling organic working medium to absorb the solar energy gathering and becomes working substance steam driving steam turbine or the generating of decompressor drive generator, output electric energy.And in summer, utilize the working medium heat after expanding to realize regeneration to solution simultaneously, drive solution dehumidifying air-conditioning system to obtain certain cold; In winter, directly utilize hot water heat exchanger to produce hot water, provide heat energy output for heat supply heating.
The cool and thermal power multiple-supplying device of solar energy being realized to cascade utilization provided by the invention, this device comprises Heat-transfer Oil Pump 1, solar thermal collector 2, steam generator 3, steam turbine or decompressor 4, generator 5, hot water heat exchanger 6, solution heater 7, condenser 8, liquid container 9, working medium pump 10, solution reheater 11, liquid desiccant air conditioning unit 12;
This device mainly comprises three kinds of loops, is respectively conduction oil loop, power cycle working medium loop and solution loop;
Wherein, in conduction oil loop, the outlet end of Heat-transfer Oil Pump 1 is connected with the entrance point of solar thermal collector 2, the outlet end of solar thermal collector 2 is connected with the oily side-entrance end of steam generator 3, the oily side outlet end of steam generator 3 is surveyed entrance point with the oil of solution reheater 11 and is connected, and the oil of solution reheater 11 is surveyed outlet end and is connected with the entrance point of Heat-transfer Oil Pump 1;
In power cycle working medium loop, the working medium side outlet end of steam generator 3 is connected with the entrance point of steam turbine or decompressor 4, the axle head of steam turbine or decompressor 4 is connected with the axle head of generator 5, the outlet end of steam turbine or decompressor 4 is connected with the entrance point of solution heater 7 with the entrance point of hot water heat exchanger 6 respectively, the sender property outlet end of hot water heat exchanger 6 and solution heater 7 is all connected with the entrance point of condenser 8, the outlet end of condenser 8 is connected with the entrance point of liquid container 9, the outlet end of liquid container 9 is connected with the entrance point of working medium pump 10, the outlet end of working medium pump 10 is connected with the working medium side entrance point of steam generator 3,
In solution loop, the taphole end of liquid desiccant air conditioning unit 12 is connected with the solution inlet port end of solution heater 7, the taphole end of solution heater 7 is connected with the entrance point of liquid desiccant air conditioning unit 12 with solution reheater 11 respectively, and the taphole end of solution reheater 11 is connected with the solution inlet port end of liquid desiccant air conditioning unit 12.
Described solar thermal collector 2 is interior directly forms direct-type system using power cycle working medium as thermal medium, or adopts conduction oil through heat exchanger, to transfer heat to cycle fluid formation indirection type system as thermal medium.
The present invention also provides a kind of cool and thermal power multiple-supplying method that solar energy is realized to cascade utilization, the method comprises the steps: that the collected solar energy of solar thermal collector 2 passes to the power cycle working medium in steam generator 3, makes it temperature rising and becomes steam; The working substance steam producing after heating enters steam turbine or decompressor 4, makes it externally acting and drives generator 5 generatings, output electric energy; By switch valve, make the exhaust of steam turbine or decompressor 4 enter hot water heat exchanger 6, realize producing of hot water, for domestic hot-water or heating output; Or make the exhaust of steam turbine or decompressor 4 enter solution heater 7, binding soln reheater 11 makes solution heating realize regeneration, thereby drives liquid desiccant air conditioning unit 12 to realize the output of cold.
Embodiment 1: as shown in Figure 1, solar energy is realized to cool and thermal power multiple-supplying method and the device of cascade utilization, mainly by solar heat collector, organic Rankine power circulating device, solution dehumidifying air-conditioning device, domestic hot-water's device and heating installation composition.Described solar heat collector is linked in sequence successively and is formed a circulation means by Heat-transfer Oil Pump 1, solar thermal collector 2, steam generator 3 and solution reheater 11.The working medium side outlet of described steam generator 3 is connected with described steam turbine or decompressor 4, described steam turbine or decompressor 4 are connected with described generator 5, the sender property outlet of described steam turbine or decompressor 4 is connected with described solution heater 6 or hot water heat exchanger 7, the working medium side outlet of described hot water heat exchanger 6 or solution heater 7 is connected successively with condenser 8, liquid container 9, working medium pump 10, the outlet of last described working medium pump 10 is connected with the import of described steam generator 3, forms an organic Rankine power cycle.After the solution side outlet of described solution heater 7 is connected with solution reheater 11, is connected to liquid desiccant air conditioning unit 12 or is directly connected to liquid desiccant air conditioning unit 12.Described hot water heat exchanger 6 water side outlets are directly connected with domestic hot-water's device or heat supply heating end equipment, and import is connected with domestic water supply channel or heating water return pipeline.
In solar heat collector, adopt conduction oil as circulatory mediator, in this circulation, conduction oil first passes through Heat-transfer Oil Pump 1, then enters solar thermal collector 2, is connected to steam generator 3 carries out heat exchange through pipeline, returns the entrance of Heat-transfer Oil Pump 1 after heat exchange.In power cycle, working medium is interior after heating at steam generator 3, form high temperature and high pressure gas, enter into the acting of expanding of steam turbine or decompressor 4, drive generator 5, then flow through successively hot water heat exchanger 6 or solution heater 7, then the condenser 8 of flowing through is cooled into liquid state, be connected to afterwards liquid container 9 and working medium pump 10, after pressurization, get back to steam generator 3, thereby form whole power cycle.When condenser 8, using water during as cooling medium, can be used by the thermal source using heat of condensation as low-temperature water heating.Liquid desiccant air conditioning unit part, dilute solution is heated from the unit solution heater 7 of out flowing through, after the solution reheater 11 of can also flowing through when dehumidifying duty ratio is larger is further heated by conduction oil, turn back to again in liquid desiccant air conditioning unit, realize dehumidifying and the output of freezing.The output that working medium in hot water heat exchanger 6 after utilization expansion realizes hot water is for domestic hot-water or heat supply heating.
Embodiment 2: as shown in Figure 2, solar energy is realized to cool and thermal power multiple-supplying method and the device of cascade utilization, mainly by solar thermal collector 2, steam turbine or decompressor 4, generator 5, solution heater 6, hot water heat exchanger 7, condenser 8, liquid container 9, working medium pump 10, liquid desiccant air conditioning unit 12, formed.The outlet of described solar thermal collector 2 is connected with described steam turbine or decompressor 4, described steam turbine or decompressor 4 are connected with described motor 5, after being connected with described hot water heat exchanger 6 or solution heater 7, the steam (vapor) outlet of described steam turbine or decompressor 4 is connected with condenser 8 again, then be connected with described liquid container 9, working medium pump 10 successively, form power cycle.Solution part is that the dilute solution solution heater 6 of flowing through is heated, and flows into afterwards in liquid desiccant air conditioning unit, realizes dehumidifying and refrigeration output; The output that working medium in hot water heat exchanger 6 after utilization expansion realizes hot water is for domestic hot-water or heat supply heating.
Adopt low boiling working fluid as circulatory mediator, working medium is interior after heating at solar thermal collector 2, form high temperature and high pressure gas, enter into the acting of expanding of steam turbine or decompressor 4, drive generator 5, then flow through successively hot water heat exchanger 6 or solution heater 7, then the condenser 8 of flowing through is cooled into liquid state, be connected to afterwards liquid container 9 and working medium pump 10, after pressurization, get back to steam generator 3, thereby form whole power cycle.When condenser 8, using water during as cooling medium, can be used by the thermal source using heat of condensation as low-temperature water heating.Liquid desiccant air conditioning unit part, dilute solution is out flowed through solution heater 6 through heating from unit, then turns back in liquid desiccant air conditioning unit, realizes dehumidifying and the output of freezing.The output that working medium in hot water heat exchanger 6 after utilization expansion realizes hot water is for domestic hot-water or heat supply heating.
As mentioned above, although represented and explained the present invention with reference to specific preferred embodiment, it shall not be construed as the restriction to the present invention self.Not departing under the spirit and scope of the present invention prerequisite of claims definition, can make a variety of changes in the form and details it.
Claims (3)
1. solar energy is realized to a cool and thermal power multiple-supplying device for cascade utilization, be it is characterized in that: this device comprises Heat-transfer Oil Pump (1) solar thermal collector (2), steam generator (3), steam turbine or decompressor (4), generator (5), hot water heat exchanger (6), solution heater (7), condenser (8), liquid container (9), working medium pump (10), solution reheater (11), liquid desiccant air conditioning unit (12);
This device mainly comprises three kinds of loops, is respectively conduction oil loop, power cycle working medium loop and solution loop;
Wherein, the outlet end of Heat-transfer Oil Pump in conduction oil loop (1) is connected with the entrance point of solar thermal collector (2), the outlet end of solar thermal collector (2) is connected with the oily side-entrance end of steam generator (3), the oily side outlet end of steam generator (3) is surveyed entrance point with the oil of solution reheater (11) and is connected, and the oil of solution reheater (11) is surveyed outlet end and is connected with the entrance point of Heat-transfer Oil Pump (1);
In power cycle working medium loop, the working medium side outlet end of steam generator (3) is connected with the entrance point of steam turbine or decompressor (4), the axle head of steam turbine or decompressor (4) is connected with the axle head of generator (5), the outlet end of steam turbine or decompressor (4) is connected with the entrance point of solution heater (7) with the entrance point of hot water heat exchanger (6) respectively, the sender property outlet end of hot water heat exchanger (6) and solution heater (7) is all connected with the entrance point of condenser (8), the outlet end of condenser (8) is connected with the entrance point of liquid container (9), the outlet end of liquid container (9) is connected with the entrance point of working medium pump (10), the outlet end of working medium pump (10) is connected with the working medium side entrance point of steam generator (3),
In solution loop, the taphole end of liquid desiccant air conditioning unit (12) is connected with the solution inlet port end of solution heater (7), the taphole end of solution heater (7) is connected with the entrance point of liquid desiccant air conditioning unit (12) with solution reheater (11) respectively, and the taphole end of solution reheater (11) is connected with the solution inlet port end of liquid desiccant air conditioning unit (12).
2. the cool and thermal power multiple-supplying device of solar energy being realized to cascade utilization according to claim 1, it is characterized in that: in described solar thermal collector (2), directly using power cycle working medium as thermal medium, form direct-type system, or adopt conduction oil through heat exchanger, to transfer heat to cycle fluid formation indirection type system as thermal medium.
3. a cool and thermal power multiple-supplying method that solar energy is realized to cascade utilization, it is characterized in that, the method comprises the steps: that the collected solar energy of solar thermal collector (2) passes to the power cycle working medium in steam generator (3), makes it temperature rising and becomes steam; The working substance steam producing after heating enters steam turbine or decompressor (4), makes it externally acting and drives generator (5) generating, output electric energy; By switch valve, make the exhaust of steam turbine or decompressor (4) enter hot water heat exchanger (6), realize producing of hot water, for domestic hot-water or heating output; Or the exhaust that makes steam turbine or decompressor (4) enters solution heater (7), binding soln reheater (11) makes solution heating realize regeneration, thereby drives liquid desiccant air conditioning unit (12) to realize the output of cold.
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| CN104632558A (en) * | 2014-12-10 | 2015-05-20 | 杨玉荣 | Brand new solar photo-thermal power generation system integrated design scheme |
| CN104819019A (en) * | 2015-03-27 | 2015-08-05 | 上海交通大学 | Organic solid waste energy co-generation application system |
| CN105258357A (en) * | 2015-11-04 | 2016-01-20 | 刘东衡 | Solar oil heating furnace power generating-water heating system |
| CN107939464A (en) * | 2017-12-21 | 2018-04-20 | 西安热工研究院有限公司 | A kind of CHP Heating System and method of work based on absorption heat pump cycle |
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| CN113783504A (en) * | 2021-07-26 | 2021-12-10 | 天津科技大学 | Photovoltaic photo-thermal system and control method thereof |
| CN114465577A (en) * | 2022-04-12 | 2022-05-10 | 华东交通大学 | Photovoltaic photo-thermal-based solar energy utilization device and optimal control method |
| CN114811993A (en) * | 2022-05-20 | 2022-07-29 | 西安交通大学 | Carbon dioxide mixed working medium cold-hot electricity combined supply system based on solar drive |
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