CN107940789B - A kind of cool and thermal power combined generating system based on movable solar energy heat collector - Google Patents
A kind of cool and thermal power combined generating system based on movable solar energy heat collector Download PDFInfo
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- CN107940789B CN107940789B CN201711183738.6A CN201711183738A CN107940789B CN 107940789 B CN107940789 B CN 107940789B CN 201711183738 A CN201711183738 A CN 201711183738A CN 107940789 B CN107940789 B CN 107940789B
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- 239000006096 absorbing agent Substances 0.000 claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 16
- 238000010521 absorption reaction Methods 0.000 claims abstract description 15
- 238000005057 refrigeration Methods 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 27
- 239000002351 wastewater Substances 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000005338 heat storage Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 238000010248 power generation Methods 0.000 claims description 17
- 238000001704 evaporation Methods 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
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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
- F25B7/00—Compression machines, plants or systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit
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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
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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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
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
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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
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
- F25B15/025—Liquid transfer means
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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
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
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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
- F25B41/00—Fluid-circulation arrangements
-
- 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
- F25B2400/00—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
- F25B2400/24—Storage receiver 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
- 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
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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]
- Y02B30/62—Absorption based systems
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of novel cool and thermal power combined generating system based on movable solar energy heat collector, belongs to Organic Rankine Cycle technical field.The novel cool and thermal power combined generating system based on movable solar energy heat collector includes level-one Organic Rankine Cycle module, second level Organic Rankine Cycle module, mobile solar energy heat collecting module and absorption refrigeration module；Level-one Organic Rankine Cycle module includes the first evaporator, the first turbine LP rotors, the first condenser and the first working medium pump, and initial heat source used in the first evaporator is geothermal fluid；Second level Organic Rankine Cycle module includes the second evaporator, the second turbine LP rotors, the second condenser and the second working medium pump, and the second evaporator is connect with the first evaporator；Mobile solar energy heat collecting module includes movable solar energy heat collector, heat-accumulator tank and third working medium pump, and absorption refrigeration module includes generator, third condenser, third evaporator, absorber and solution heat exchanger.
Description
Technical Field
The invention relates to the technical field of organic Rankine cycle, in particular to a novel combined cooling heating and power generation system based on a movable solar heat collector.
Background
The economic development of China is rapidly accompanied by energy shortage and serious environmental pollution, wherein the utilization rate of natural energy such as geothermal energy, solar energy and the like is low, geothermal resources are abundant in China, solar energy resources are ubiquitous, the geothermal resources and the solar energy resources belong to renewable resources, and the reasonable utilization of the natural resources becomes an important way for relieving the energy problem.
An Organic Rankine Cycle (ORC) system is a Rankine cycle system taking low-boiling point organic matters as working media and mainly comprises a waste heat boiler or a heat exchanger, a steam turbine, a condenser and a working medium pump. The steam discharged from the steam turbine releases heat to cooling water in the condenser, condenses into liquid, and finally returns to the heat exchanger again by virtue of the working medium pump, thus continuously circulating. Because the steam turbine tail exhaust steam still has certain working capacity, the organic Rankine cycle efficiency can be effectively improved by reusing the steam turbine tail exhaust steam, the potential of solar energy resources is huge, the steam turbine tail exhaust steam still having certain working capacity can be converted into secondary available energy, but the utilization of the solar energy resources is limited in daytime, so that a novel organic Rankine cycle system of a cooling, heating and power combined system with heat collection/storage capacity is needed to be designed, and abundant natural resources are reasonably utilized.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a novel combined cooling heating and power generation system based on a movable solar thermal collector, which comprises a primary organic Rankine cycle module, a secondary organic Rankine cycle module, a movable solar thermal collection module and an absorption refrigeration module;
the primary organic Rankine cycle module comprises a first evaporator, a first turbine generator set connected with the first evaporator, a first condenser connected with the first turbine generator set, and a first working medium pump arranged on a pipeline between the first condenser and the first evaporator, wherein an initial heat source used by the first evaporator is geothermal fluid;
the two-stage organic Rankine cycle module comprises a second evaporator, a second turbine generator set connected with the second evaporator, a second condenser connected with the second turbine generator set, and a second working medium pump arranged on a pipeline between the second condenser and the second evaporator, wherein the second evaporator is connected with the first evaporator;
the movable solar heat collection module comprises a movable solar heat collector, a heat storage tank, a third working medium pump, two pipelines, namely a first pipeline and a second pipeline, are led out from a water outlet of the movable solar heat collector, the first pipeline is communicated with the heat storage tank, a first valve is arranged on the first pipeline, the second pipeline is communicated with a pipeline positioned between the second evaporator and the first evaporator, a second valve is arranged on the second pipeline, the heat storage tank is connected with the second evaporator, and the orientation of a heat collection surface of the movable solar heat collector and the heat collection angle of the heat collection surface can be adjusted;
the absorption refrigeration module comprises a generator, a third condenser connected with the generator, a third evaporator connected with the third condenser, and an absorber connected with the third evaporator, wherein the generator is connected with the solution heat exchanger and the absorber through a third pipeline, the second condenser is connected with the generator, hot water discharged by the second condenser enters the generator to exchange heat with dilute solution in the generator, water vapor generated by the generator forms condensed liquid in the third condenser and then enters the third evaporator, the third evaporator refrigerates the outside, the water vapor formed by heat absorption and evaporation enters the absorber, concentrated solution generated by the generator enters the absorber after being heated by the solution heat exchanger through the third pipeline, the water vapor and the concentrated solution entering the absorber are mixed into dilute solution, and the absorber is connected with the solution heat exchanger and the generator through a fourth pipeline, and the dilute solution flows back to the generator after being cooled by the solution heat exchanger through a fourth pipeline.
And a flowmeter is arranged on the second pipeline.
And a third valve is arranged on a pipeline connecting the heat storage tank and the second evaporator.
The primary organic Rankine cycle module further comprises a cooling tower connected with the first condenser, and hot water discharged by the first condenser enters the first condenser again after being cooled by the cooling tower.
The third evaporator is connected with a wastewater discharge system of a user community, and high-temperature wastewater discharged by the wastewater discharge system enters the third evaporator;
and the vapor generated by the generator forms condensed liquid in the third condenser and then enters the third evaporator to refrigerate the high-temperature wastewater discharged by the wastewater discharge system, the vapor formed by heat absorption evaporation enters the absorber, and the high-temperature wastewater is cooled and then is supplied to the user again.
And a fourth working medium pump is arranged on a third pipeline between the generator and the solution heat exchanger.
A throttle valve is provided on a fourth conduit between the solution heat exchanger and the generator.
The hot stream from the second evaporator is discharged into the hot well.
And a fifth working medium pump is arranged on a pipeline between the third condenser and the third evaporator.
The novel combined cooling heating and power generation system based on the movable solar heat collector breaks through the original single combined cooling heating and power generation system, and the geothermal resources and the solar resources are fully utilized, the geothermal fluid is used as an initial heat source of the primary organic Rankine cycle module, the solar resources and the initial geothermal fluid consuming part of heat are mixed to be used as a secondary heat source, the movable solar heat collection module is used for collecting heat according to the local sunlight irradiation angle of the movable solar heat collection module, the controller controls the solar energy collector to adjust the heat collection angle of the received sunlight in real time, thereby ensuring the maximum receiving and utilizing of solar energy resources, meanwhile, redundant heat is stored in the heat storage tank, the system can continuously realize two functions of heat storage and heat release, the system can still normally operate under the condition of no sunshine or insufficient sunlight, and renewable resources are vigorously developed.
Drawings
Fig. 1 is a schematic structural diagram of a novel combined cooling heating and power generation system based on a movable solar thermal collector provided by the invention.
Wherein,
the system comprises a first evaporator 1, a first steam turbine generator set 2, a first condenser 3, a first working medium pump 4, a cooling tower 5, a second evaporator 6, a second steam turbine generator set 7, a second condenser 8, a second working medium pump 9, a movable solar heat collector 10, a heat storage tank 11, a heat well 12, a third working medium pump 13, a first valve 14, a second valve 15, a flow meter 16, a third valve 17, a generator 18, a third condenser 19, a third evaporator 20, an absorber 21, a third pipeline 22, a fifth working medium pump 23, a solution heat exchanger 24, a fourth working medium pump 25, a fourth pipeline 26, a throttle valve 27 and a user community 28.
Detailed Description
In order to solve the problems in the prior art, as shown in fig. 1, the invention provides a novel combined cooling heating and power generation system based on a movable solar thermal collector, which comprises a primary organic rankine cycle module, a secondary organic rankine cycle module, a movable solar thermal collection module and an absorption refrigeration module;
the primary organic Rankine cycle module comprises a first evaporator 1, a first turbine generator set 2 connected with the first evaporator 1, a first condenser 3 connected with the first turbine generator set 2, and a first working medium pump 4 arranged on a pipeline between the first condenser 3 and the first evaporator 1, wherein an initial heat source used by the first evaporator 1 is geothermal fluid;
the geothermal fluid can be underground hot water, geothermal steam or heat-carrying gas and the like which are stored underground, various thermal fluids with the temperature higher than a normal value are used, the geothermal fluid is used as an initial heat source to enter a first evaporator 1 to exchange heat with a liquid organic working medium in the first evaporator 1, the liquid organic working medium is heated to a saturated steam state and then enters a steam turbine of a first steam turbine generator set 2 to expand to do work, an output shaft of the steam turbine is connected with a generator of the first steam turbine generator set 2 to drive the generator to generate power for users, the organic working medium discharged by the first steam turbine generator set 2 enters a first condenser 3 to exchange heat with cooling water to form the liquid organic working medium, the liquid organic working medium is pressurized by a first working medium pump 4 and then enters the first evaporator 1 again to exchange heat, a primary organic Rankine cycle process is completed, wherein the source of the cooling water in the first condenser 3 can be low-temperature wastewater generated by the users in daily life, the first condenser 3 is connected with the cooling tower 5, and after the low-temperature wastewater exchanges heat with the organic working medium entering the first condenser 3, the discharged hot water enters the first condenser 3 again for heat exchange after being cooled by the cooling tower 5. The geothermal fluid serving as an initial heat source heats the organic working medium in the first evaporator 1, then is discharged from the first evaporator 1 and enters the secondary organic Rankine cycle module;
the two-stage organic Rankine cycle module comprises a second evaporator 6, a second turbine generator set 7 connected with the second evaporator 6, a second condenser 8 connected with the second turbine generator set 7, and a second working medium pump 9 arranged on a pipeline between the second condenser 8 and the second evaporator 6, wherein the second evaporator 6 is connected with the first evaporator 1;
the geothermal fluid as an initial heat source exchanges heat with the liquid organic working medium in the first evaporator 1, so that the temperature of the geothermal fluid discharged from the first evaporator 1 is reduced to a heat flow with a certain temperature, and the two-stage organic Rankine cycle module is provided with a movable solar heat collection module, so that the heat flow with a certain temperature is mixed with a heat compensation heat source generated by the movable solar heat collection module to raise the temperature before entering the second evaporator 6, and a secondary heat source is formed after the temperature is raised and then enters the second evaporator 6 to exchange heat with the liquid organic working medium in the second evaporator 6;
the movable solar heat collection module comprises a movable solar heat collector 10, a heat storage tank 11 and a third working medium pump 13 arranged on a pipeline between a water inlet of the movable solar heat collector 10 and a heat well 12, two pipelines are led out from a water outlet of the movable solar heat collector 10 and respectively comprise a first pipeline and a second pipeline, the first pipeline is communicated with the heat storage tank 11, a first valve 14 is arranged on the first pipeline, the second pipeline is communicated with a pipeline between the second evaporator 6 and the first evaporator 1, a second valve 15 and a flow meter 16 are arranged on the second pipeline, the heat storage tank 11 is connected with the second evaporator 6, a third valve 17 is arranged on a pipeline between the heat storage tank 11 and the second evaporator 6, and the heat collection surface orientation of the movable solar heat collector 10 and the heat collection angle of the heat collection surface can be adjusted;
the water in the hot well 12 is pressurized by the third working medium pump 13 and then enters the movable solar heat collector 10 through the water inlet of the movable solar heat collector 10, the movable solar heat collector 10 converts solar radiation energy into heat energy to raise the temperature of the water, if the sunshine condition is good, the first valve 14 and the second valve 15 are opened at the same time, the third valve 17 is closed, one part of the hot water flowing out of the water outlet of the movable solar heat collector 10 enters the heat storage tank 11 through the first pipeline for storage, the other part of the hot water enters the pipeline between the second evaporator 6 and the first evaporator 1 through the second pipeline and is mixed with the heat flow with certain temperature discharged by the first evaporator 1 to form a secondary heat source and then enters the second evaporator 6, wherein the first valve 14 is used for controlling the flow of the hot water on the first pipeline, the second valve 15 is used for controlling the flow of the hot water on the second pipeline, if the sunshine condition is poor or hot water generated by the movable solar heat collector 10 at night cannot meet the heat exchange requirement, closing the first valve 14 and the second valve 15, stopping running the third working medium pump 13, opening and adjusting the third valve 17, controlling the hot water stored in the heat storage tank 11 to be mixed with the geothermal fluid discharged by the first evaporator 1 to form a secondary heat source, and then, controlling the secondary heat source to enter the second evaporator 6;
wherein, portable solar collector 10 is equipped with many tracks and heat collecting plate, and the heat collecting plate is as the thermal-arrest face, and the heat collecting plate can slide on the track, and the heat collecting plate passes through 360 rotatable shaft connections with the track junction for the heat collecting plate can carry out 360 degrees rotations, consequently, can adjust the orientation of thermal-arrest face and the thermal-arrest angle of thermal-arrest face in real time according to the sunshine condition, the receipt solar energy resource of maximize, portable solar collector 10 adopts the controller to carry out automatically regulated.
The geothermal fluid discharged from the first evaporator 1 is mixed with a heat supplementing heat source generated by the movable solar heat collection module to form a secondary heat source, the secondary heat source enters the second evaporator 6 to exchange heat with the liquid organic working medium in the second evaporator 6, the liquid organic working medium is heated to a saturated steam state and then enters a steam turbine of the second steam turbine generator set 7 to expand and do work, an output shaft of the steam turbine is connected with a generator of the second steam turbine generator set 7 to drive the generator to generate power for a user, the organic working medium discharged from the second steam turbine generator set 7 enters the second condenser 8 to exchange heat with cooling water to form the liquid organic working medium, the liquid organic working medium is pressurized by the second working medium pump 9 and then enters the second evaporator 6 again to exchange heat, the heat flow discharged from the second evaporator 6 is discharged to a heat well 12 to complete a secondary organic Rankine cycle process, wherein, the source of the cooling water in the second condenser 8 can be low-temperature waste water generated in daily life of a user, and after the low-temperature waste water exchanges heat with the organic working medium entering the second condenser 8, the discharged hot water enters the absorption refrigeration module;
the absorption refrigeration module comprises a generator 18, a third condenser 19 connected with the generator 18, a third evaporator 20 connected with the third condenser 19, an absorber 21 connected with the third evaporator 20, the generator 18 is connected with a solution heat exchanger 24 and the absorber 21 through a third pipeline 22, the second condenser 8 is connected with the generator 18, hot water discharged by the second condenser 8 enters the generator 18 to exchange heat with dilute solution in the generator 18, water vapor generated by the generator 18 serves as a refrigerant and enters the third condenser 19, condensed liquid is formed in the third condenser 19 and then enters the third evaporator 20, and the third evaporator 20 refrigerates the outside, wherein the third evaporator 20 is connected with a waste water discharge system of a user community 28, and high-temperature waste water discharged by the waste water discharge system enters the third evaporator 20; condensed liquid formed in the third condenser 19 enters a third evaporator 20 to refrigerate high-temperature wastewater discharged by a wastewater discharge system, water vapor formed by heat absorption and evaporation enters an absorber 21, and the high-temperature wastewater is cooled and then is used by a user again; a fifth working medium pump 23 is arranged on a pipeline between the third condenser 19 and the third evaporator 20, and condensed liquid formed in the third condenser 19 enters the third evaporator 20 after being pressurized by the fifth working medium pump 23; the concentrated solution generated by the generator 18 enters the absorber 21 after being heated by the solution heat exchanger 24 through the third pipeline 22, the third pipeline 22 between the generator 18 and the solution heat exchanger 24 is provided with a fourth working medium pump 25, the concentrated solution is pressurized and then enters the solution heat exchanger 24, and the water vapor and the concentrated solution entering the absorber 21 are mixed into a dilute solution;
the absorber 21 is connected to the solution heat exchanger 24 and the generator 18 through a fourth pipeline 26, the diluted solution is cooled by the solution heat exchanger 24 through the fourth pipeline 26 and then flows back to the generator 18, and a throttle valve 27 is arranged on a fourth pipeline between the solution heat exchanger 24 and the generator 18.
The whole working process of the novel combined cooling heating and power generation system based on the movable solar thermal collector is that when the system is started, the first-stage organic Rankine cycle module is started, the combined movable solar thermal collection module pushes the second-stage organic Rankine cycle module to start together, finally, the absorption type refrigeration module is started, and when the system runs stably, the four modules work simultaneously.
The novel combined cooling heating and power generation system based on the movable solar heat collector breaks through the original single combined cooling heating and power generation system, and the geothermal resources and the solar resources are fully utilized, the geothermal fluid is used as an initial heat source of the primary organic Rankine cycle module, the solar resources and the initial geothermal fluid consuming part of heat are mixed to be used as a secondary heat source, the movable solar heat collection module is used for collecting heat according to the local sunlight irradiation angle of the movable solar heat collection module, the controller controls the solar energy collector to adjust the heat collection angle of the received sunlight in real time, thereby ensuring the maximum receiving and utilizing of solar energy resources, meanwhile, redundant heat is stored in the heat storage tank 11, so that the system can continuously and efficiently perform two functions of heat storage and heat release, the system can still normally operate under the condition of no sunshine or insufficient sunlight, and renewable resources are vigorously developed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A novel combined cooling heating and power generation system based on a movable solar thermal collector is characterized by comprising a primary organic Rankine cycle module, a secondary organic Rankine cycle module, a movable solar thermal collection module and an absorption refrigeration module;
the primary organic Rankine cycle module comprises a first evaporator, a first turbine generator set connected with the first evaporator, a first condenser connected with the first turbine generator set, and a first working medium pump arranged on a pipeline between the first condenser and the first evaporator, wherein an initial heat source used by the first evaporator is geothermal fluid;
the two-stage organic Rankine cycle module comprises a second evaporator, a second turbine generator set connected with the second evaporator, a second condenser connected with the second turbine generator set, and a second working medium pump arranged on a pipeline between the second condenser and the second evaporator, wherein the second evaporator is connected with the first evaporator;
the movable solar heat collection module comprises a movable solar heat collector, a heat storage tank, a third working medium pump, two pipelines, namely a first pipeline and a second pipeline, are led out from a water outlet of the movable solar heat collector, the first pipeline is communicated with the heat storage tank, a first valve is arranged on the first pipeline, the second pipeline is communicated with a pipeline positioned between the second evaporator and the first evaporator, a second valve is arranged on the second pipeline, the heat storage tank is connected with the second evaporator, and the orientation of a heat collection surface of the movable solar heat collector and the heat collection angle of the heat collection surface can be adjusted;
the absorption refrigeration module comprises a generator, a third condenser connected with the generator, a third evaporator connected with the third condenser, and an absorber connected with the third evaporator, wherein the generator is connected with the solution heat exchanger and the absorber through a third pipeline, the second condenser is connected with the generator, hot water discharged by the second condenser enters the generator to exchange heat with dilute solution in the generator, water vapor generated by the generator forms condensed liquid in the third condenser and then enters the third evaporator, the third evaporator refrigerates the outside, the water vapor formed by heat absorption and evaporation enters the absorber, concentrated solution generated by the generator enters the absorber after being heated by the solution heat exchanger through the third pipeline, the water vapor and the concentrated solution entering the absorber are mixed into dilute solution, and the absorber is connected with the solution heat exchanger and the generator through a fourth pipeline, and the dilute solution flows back to the generator after being cooled by the solution heat exchanger through a fourth pipeline.
2. The combined cooling, heating and power generation system based on the movable solar heat collector as claimed in claim 1, wherein a flow meter is arranged on the second pipeline.
3. The combined cooling, heating and power generation system based on the movable solar thermal collector as claimed in claim 1, wherein a third valve is arranged on a pipeline connecting the thermal storage tank and the second evaporator.
4. The novel combined cooling heating and power generation system based on the movable solar thermal collector is characterized in that the primary organic Rankine cycle module further comprises a cooling tower connected with the first condenser, and hot water discharged by the first condenser enters the first condenser again after being cooled by the cooling tower.
5. The novel combined cooling heating and power generation system based on the movable solar thermal collector as claimed in claim 1, wherein the third evaporator is connected with a wastewater discharge system of a user community, and high-temperature wastewater discharged by the wastewater discharge system enters the third evaporator;
and the vapor generated by the generator forms condensed liquid in the third condenser and then enters the third evaporator to refrigerate the high-temperature wastewater discharged by the wastewater discharge system, the vapor formed by heat absorption evaporation enters the absorber, and the high-temperature wastewater is cooled and then is supplied to the user again.
6. The combined cooling, heating and power generation system based on the movable solar heat collector as claimed in claim 1, wherein a fourth working medium pump is arranged on a third pipeline between the generator and the solution heat exchanger.
7. The combined cooling, heating and power system as claimed in claim 1, wherein a throttle is provided on the fourth pipe between the solution heat exchanger and the generator.
8. The combined cooling, heating and power system as claimed in claim 1, wherein the hot water from the second evaporator is discharged into the hot well.
9. The novel combined cooling, heating and power generation system based on the movable solar heat collector as claimed in claim 1, wherein a fifth working medium pump is arranged on a pipeline between the third condenser and the third evaporator.
Priority Applications (1)
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| CN109405035A (en) * | 2018-10-24 | 2019-03-01 | 李付全 | A kind of novel cold and hot integrated system apparatus and its application method based on underground heat and solar energy |
| CN109826682B (en) * | 2019-01-03 | 2021-12-03 | 上海海事大学 | Integrated energy supply system capable of realizing combined supply of cold, heat and electricity |
| CN110206699A (en) * | 2019-07-05 | 2019-09-06 | 王恩礼 | It is a kind of using low-grade composite heat power supply as the thermal cycle electricity generation system of energy |
| CN111141064B (en) * | 2020-01-22 | 2024-04-09 | 天津商业大学 | Multi-energy driven absorption type cascade carbon dioxide two-stage compression refrigeration system |
| CN111852798B (en) * | 2020-08-06 | 2024-04-02 | 西安交通大学 | Solar energy utilization-based heat-electricity-clean water co-production system |
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