CN110307668B - Nuclear energy cold and hot combined supply system based on absorption technology - Google Patents
Nuclear energy cold and hot combined supply system based on absorption technology Download PDFInfo
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- CN110307668B CN110307668B CN201910664892.8A CN201910664892A CN110307668B CN 110307668 B CN110307668 B CN 110307668B CN 201910664892 A CN201910664892 A CN 201910664892A CN 110307668 B CN110307668 B CN 110307668B
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 71
- 238000005516 engineering process Methods 0.000 title abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 239000003507 refrigerant Substances 0.000 claims abstract description 17
- 238000005057 refrigeration Methods 0.000 claims description 17
- 239000006096 absorbing agent Substances 0.000 claims description 16
- 238000009825 accumulation Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 2
- 238000005338 heat storage Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003758 nuclear fuel Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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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
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/02—Central heating systems using heat accumulated in storage masses using heat pumps
- F24D11/0214—Central heating systems using heat accumulated in storage masses using heat pumps water heating system
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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
-
- 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
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a nuclear energy cold and hot combined supply system based on an absorption technology, and relates to the technical field of cold and hot combined supply; comprises a low Wen Here source system, an absorption type heating system and an absorption type refrigerating system; the low Wen Here source system comprises a low-temperature nuclear heat supply stack, wherein the low-temperature nuclear heat supply stack is connected with a first circulating water pump through a circulating water outlet, the first circulating water pump is communicated with a heating medium side inlet of a first heat exchanger, and a heating medium side outlet of the first heat exchanger is communicated with a water return port of the low-temperature nuclear heat supply stack; the refrigerant side of the first heat exchanger is connected with the absorption type heating system and the absorption type refrigerating system in parallel; the absorption type heating system comprises an absorption type large-temperature-difference heat exchanger unit, and the absorption type refrigerating system comprises an absorption type water chilling unit. The nuclear energy cold and hot combined supply system based on the absorption technology improves the overall performance of the system, and is convenient to adjust by arranging the heat storage system.
Description
Technical Field
The invention relates to the technical field of combined cooling and heating, in particular to a nuclear energy combined cooling and heating system based on an absorption technology.
Background
In recent years, with the high-speed development of economy and the continuous improvement of urban level in China, the application of central heating and cooling is rapidly developed. However, the energy consumption structure mainly using fire coal in China is not changed fundamentally, and heating in winter in northern areas still mainly using fire coal, so that serious haze pollution is caused.
In recent years, the country has developed clean energy, and nuclear energy has good applicability as clean energy without emission and pollution. The nuclear energy heating and cooling has good benefits in the aspects of environmental protection, cost, use stability and the like. Nuclear heating does not discharge a huge amount of pollutants into the atmosphere like fossil fuel heating, and thus nuclear heating does not cause air pollution. Nuclear heating does not produce carbon dioxide which exacerbates the global warming effect. The nuclear fuel energy density is several million times higher than fossil fuel, so the fuel volume used by nuclear heat supply pile is small, the transportation and storage are convenient, a 100-megawatt nuclear energy heat supply station only needs 3 metric tons of uranium fuel in one year, and the transportation cost is low. In the nuclear energy heat supply cost, the fuel cost occupies a lower proportion, the nuclear energy cost is less susceptible to the international economic situation, and the cost is stable. Therefore, the nuclear energy has good market popularization in the cold and hot combined supply area.
To date, nuclear heating technology has been applied to a certain scale, and 57 reactors in the world generate hot water or steam for district heating while generating electricity, and the reactors are mainly distributed in cold eastern europe, such as russia and ukraine. The nuclear energy cold and heat combined supply of China is in the experimental development stage, and the nuclear energy cold and heat combined supply of China can be developed in the next few years.
Most nuclear cryostacks only provide heat and exchange heat only by simple heat exchangers. The existing nuclear energy cold-hot power practice device, such as the cold-hot combined supply device of a low-temperature nuclear heat supply stack disclosed in patent CN201821126856, only uses a heat exchanger to exchange heat among systems, heats circulating water by an absorption heat pump in a refrigeration system, and then uses the heated circulating water to perform refrigeration.
Disclosure of Invention
The invention aims to provide a nuclear energy cold and hot combined supply system based on an absorption technology, so as to solve the problems in the prior art, improve the overall performance of the system and facilitate system adjustment by arranging a heat storage system.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a nuclear energy cold and heat combined supply system based on an absorption technology, which comprises a low Wen Here source system, an absorption type heating system and an absorption type refrigerating system; the low Wen Here source system comprises a low-temperature nuclear heat supply stack, wherein the low-temperature nuclear heat supply stack is connected with a first circulating water pump through a circulating water outlet, the first circulating water pump is communicated with a heating medium side inlet of a first heat exchanger, and a heating medium side outlet of the first heat exchanger is communicated with a water return port of the low-temperature nuclear heat supply stack; the refrigerant side of the first heat exchanger is connected with the absorption type heating system and the absorption type refrigerating system in parallel; the absorption type heating system comprises an absorption type large-temperature-difference heat exchanger unit, and the absorption type refrigerating system comprises an absorption type water chilling unit.
Optionally, the absorption heat supply system comprises a second valve, a third valve, an absorption large-temperature-difference heat exchanger unit and a second circulating water pump which are sequentially connected in series with a refrigerant side outlet of the first heat exchanger, and the second circulating water pump is communicated with a refrigerant side inlet of the first heat exchanger; a first valve is connected in parallel between the refrigerant side outlet of the washing heat exchanger and the second valve, the first valve is connected with a heat accumulator, a seventh valve, an absorption refrigeration system and a third valve are connected in parallel after the tail end of the heat accumulator is communicated with the second valve, and the seventh valve is connected with the second circulating water pump.
Optionally, the absorption type large-temperature-difference heat exchanger unit comprises a second heat exchanger and a first generator connected with an outlet of the third valve, the first generator is connected with a heat medium inlet of the second heat exchanger, a heat medium outlet of the second heat exchanger is connected with a first evaporator, and the first evaporator is connected with the second circulating water pump; the external heat supply water return pipeline is respectively connected with a first absorber and a refrigerant side inlet of the second heat exchanger, an outlet of the first absorber is connected with a first condenser, and an outlet of the first condenser is communicated with a refrigerant side outlet of the second heat exchanger and then is connected with an external heat supply water supply pipeline.
Optionally, the absorption refrigeration system comprises a fourth valve, and a seventh valve, the fourth valve and the third valve are connected in parallel after the tail end of the heat accumulator is communicated with the second valve; the absorption chiller comprises a second evaporator, a second absorber, a second generator and a second condenser; the outlet of the fourth valve is connected with the second generator, and the outlet of the second generator is communicated with the outlet of the first evaporator and then is connected with the inlet of the second circulating water pump; the external refrigeration return water pipeline is connected with the inlet of the second evaporator, the outlet of the second evaporator is respectively connected with a fifth valve and a sixth valve, the fifth valve is connected with a cold accumulation body, and the outlet of the cold accumulation body is communicated with the outlet of the sixth valve and then is connected with an external refrigeration water supply pipeline.
Optionally, the second condenser, the second absorber and the radiator are connected in a closed cycle.
Compared with the prior art, the invention has the following technical effects:
The invention improves the heat exchange strength by installing the absorption type large-temperature difference heat engine unit, reduces the recovery temperature of a heat supply stack, improves the pipe network capacity and can improve the overall heat supply performance. Through installing the absorption chiller, when there is not the heat supply demand in summer or the heat supply load is lower, the hot water that uses the heat supply heap to produce drives the absorption chiller and refrigerates, realizes centralized cooling, can improve low temperature heap's availability factor, improves economic benefits. Because the whole heat supply and cold supply have great load fluctuation in different time periods, the added heat accumulator and cold accumulation body can well regulate the system load, relieve the load regulating pressure of the nuclear energy low-temperature stack, prevent the system from overheating and supercooling, and improve the starting speed and the reaction regulating capability of the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a nuclear combined cooling and heating system based on an absorption technology;
The low-temperature nuclear heat supply reactor comprises a low-temperature nuclear heat supply reactor 1, a first heat exchanger 2, a first circulating water pump 3, a first valve 4, a second valve 5, a third valve 6, a heat accumulator 7, a second circulating water pump 8, a seventh valve 9, a second heat exchanger 10, a first generator 11, a first condenser 12, a first absorber 13, a first evaporator 14, a fourth valve 15, a second generator 16, a second evaporator 17, a fifth valve 18, a sixth valve 19, a cold accumulator 20, a second absorber 21, a second condenser 22 and a radiator 23.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a nuclear energy cold and hot combined supply system based on an absorption technology, so as to solve the problems in the prior art, improve the overall performance of the system and facilitate system adjustment by arranging a heat storage system.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a nuclear energy cold and heat combined supply system based on an absorption technology, which is shown in figure 1 and comprises a low Wen Here source system, an absorption heating system and an absorption refrigerating system. The low Wen Here source system comprises a low-temperature nuclear heating pile 1, a first heat exchanger 2 and a first circulating water pump 3. The absorption type heating system comprises a second circulating water pump 8, a first valve 4, a second valve 5, a third valve 6, a seventh valve 9, a heat accumulator 7 and an absorption type large-temperature-difference heat exchanger unit, wherein the absorption type large-temperature-difference heat exchanger unit comprises a first generator 11, a first condenser 12, a first evaporator 14, a first absorber 13 and a second heat exchanger 10.
The absorption refrigeration system comprises a fourth valve 15, a fifth valve 18, a sixth valve 19, a radiator 23, a cold accumulation body 20 and an absorption water chilling unit. The absorption chiller includes a second generator 16, a second condenser 22, a second evaporator 17, and a second absorber 21. The first valve 4 in the system is connected with the inlet of the heat accumulator 7, the second valve 5 is connected with the first valve 4 in parallel, and the third valve 6 is connected with the inlet of the first generator 11 of the absorption heat supply system. The fourth valve 15 in the system is connected to the inlet of the second generator 16 of the absorption refrigeration system. The fifth valve 18 is connected to the inlet of the cold accumulation body 20, and the sixth valve 19 is connected in parallel with the fifth valve 18. The bottom circulating water outlet of the low-temperature nuclear heat supply stack 1 is connected with a first circulating water pump 3, the first circulating water pump 3 is connected with the primary water inlet of the first heat exchanger 2, and the primary water outlet of the first heat exchanger 2 is connected with the water return port of the low-temperature nuclear heat supply stack 1. The first heat exchanger 2 adopts countercurrent heat exchange, the second circulating water pump 8 is connected with the refrigerant side inlet of the first heat exchanger 2, the refrigerant side outlet of the first heat exchanger 2 is connected with the first valve 4 and the second valve 5 in parallel, the first valve 4 is connected with the inlet of the heat accumulator 7, the outlet of the heat accumulator 7 is combined with the outlet of the second valve 5 and is divided into three branches to be respectively connected with the third valve 6, the fourth valve 15 and the seventh valve 9, and the outlet of the seventh valve 9 is connected with the inlet of the second circulating water pump 8. The outlet of the third valve 6 is connected with the inlet of the first generator 11, the outlet of the first generator 11 is connected with the inlet of the heat medium side of the second heat exchanger 10, the outlet of the heat medium of the second heat exchanger 10 is connected with the inlet of the first evaporator 14, and the outlet of the first evaporator 14 is connected with the inlet of the second circulating water pump 8. The two paths of heat supply and water return respectively enter a refrigerant inlet of the second heat exchanger 10 and an inlet of the first absorber 13, an outlet of the first absorber 13 is connected with an inlet of the first condenser 12, and an outlet of the first condenser 12 is communicated with a refrigerant outlet of the second heat exchanger 10 and then is connected with a heat supply and water supply pipeline. The outlet of the fourth valve 15 is connected with the inlet of the second generator 16, and the outlet of the second generator 16 is connected with the outlet of the first evaporator 14 and is converged to the inlet of the second circulating water pump 8. The refrigerating backwater is connected with the inlet of the second evaporator 17, the outlet of the second evaporator 17 is connected with the fifth valve 18 and the sixth valve 19 in two ways, the fifth valve 18 is connected with the inlet of the cold accumulation body 20, and the outlet of the cold accumulation body 20 is connected with the outlet of the sixth valve 19 and is converged to the refrigerating water supply pipeline. The second condenser 22, the second absorber 21 and the radiator 23 are in a closed cycle, and the heat generated by the second absorber 21 and the second condenser 22 is dissipated.
The invention applies an absorption technology to the nuclear energy cold and heat combined supply field, and specifically comprises the following steps:
The low-temperature nuclear heating stack 1 generates high-temperature hot water, and the hot water enters the first heat exchanger 2 through the first circulating water pump 3, and heats secondary circulating water in the first heat exchanger 2. The cooled circulating water is discharged out of the first heat exchanger 2 and returned to the low-temperature nuclear heating stack 1 to form a closed circulation. The heated secondary circulating water is discharged out of the first heat exchanger 2 and enters an absorption type supply system and an absorption type refrigeration system, the two systems can be operated independently or simultaneously, the water flow entering the two systems can be regulated according to the actual power, and meanwhile, the energy storage energy of the heat accumulator 7 and the cold accumulator 20 can be regulated to realize the overall balance of the frontal energy. The hot water entering the absorption heat supply system and the absorption refrigeration system is cooled and then returned to the second circulating water pump 8, and the hot water enters the first heat exchanger 2 after being pressurized by the second circulating water pump 8.
The nuclear energy cold and hot combined supply system based on the absorption technology can realize operation under various working conditions, and the specific method can be as follows:
embodiment one: heating operation; the low-temperature nuclear heating pile 1 generates high-temperature hot water to enter the first heat exchanger 2 to heat the secondary circulating hot water, and the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5. The first valve 4 is closed, the second valve 5 is opened, the third valve 6 is opened, the seventh valve 9 is closed, and the fourth valve 15 is closed.
Embodiment two: heat storage operation; the low-temperature nuclear heating pile 1 generates high-temperature hot water to enter the first heat exchanger 2 to heat the secondary circulating hot water, and the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5. The first valve 4 is open, the seventh valve 9 is open, the second valve 5 is closed, the third valve 6 is closed, and the fourth valve 15 is closed.
Embodiment III: the heat storage and the heat supply are operated simultaneously; the heat storage operation is carried out, high-temperature hot water generated by the low-temperature nuclear heating stack 1 enters the first heat exchanger 2 to heat secondary circulating hot water, and the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5. The first valve 4 is opened, the second valve 5 is opened, the seventh valve 9 is opened, the third valve 6 is opened, the fourth valve 15 is closed, and the proportion of heat storage capacity to heat supply capacity is adjusted by adjusting the opening of the seventh valve 9.
Embodiment four: cooling operation; the low-temperature nuclear heating pile 1 generates high-temperature hot water to enter the first heat exchanger 2 to heat secondary circulating hot water, the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5, the first valve 4 is closed, the second valve 5 is opened, the third valve 6 is closed, the seventh valve 9 is closed, the fourth valve 15 is opened, the fifth valve 18 is closed, and the sixth valve 19 is opened.
Fifth embodiment: cold storage operation; the low-temperature nuclear heating pile 1 generates high-temperature hot water to enter the first heat exchanger 2 to heat secondary circulating hot water, the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5, the first valve 4 is closed, the second valve 5 is opened, the third valve 6 is closed, the seventh valve 9 is closed, the fourth valve 15 is opened, the fifth valve 18 is opened, and the sixth valve 19 is closed.
Example six: the cooling and the cold storage are operated simultaneously; the low-temperature nuclear heating pile 1 generates high-temperature hot water to enter the first heat exchanger 2 to heat secondary circulating hot water, the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5, the first valve 4 is closed, the second valve 5 is opened, the third valve 6 is closed, the seventh valve 9 is closed, the fourth valve 15 is opened, the fifth valve 18 is opened, and the sixth valve 19 is opened.
Embodiment seven: the cold and hot combined supply operation; the low-temperature nuclear heating pile 1 generates high-temperature hot water to enter the first heat exchanger 2 to heat secondary circulating hot water, the heated secondary circulating hot water is discharged from the first heat exchanger 2 to enter the first valve 4 and the second valve 5, the first valve 4 is closed, the second valve 5 is opened, the third valve 6 is opened, the seventh valve 9 is closed, the fourth valve 15 is opened, the fifth valve 18 is closed, and the sixth valve 19 is opened.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (1)
1. The utility model provides a nuclear energy cold and hot allies oneself with supplies system based on absorption technique which characterized in that: comprises a low Wen Here source system, an absorption type heating system and an absorption type refrigerating system; the low Wen Here source system comprises a low-temperature nuclear heat supply stack, wherein the low-temperature nuclear heat supply stack is connected with a first circulating water pump through a circulating water outlet, the first circulating water pump is communicated with a heating medium side inlet of a first heat exchanger, and a heating medium side outlet of the first heat exchanger is communicated with a water return port of the low-temperature nuclear heat supply stack; the refrigerant side of the first heat exchanger is connected with the absorption type heating system and the absorption type refrigerating system in parallel; the absorption type heat supply system comprises an absorption type large-temperature-difference heat exchanger unit, and the absorption type refrigeration system comprises an absorption type water chilling unit; the absorption heat supply system comprises a second valve, a third valve, an absorption large-temperature-difference heat exchanger unit and a second circulating water pump which are sequentially connected in series with a refrigerant side outlet of the first heat exchanger, and the second circulating water pump is communicated with a refrigerant side inlet of the first heat exchanger; a first valve is connected in parallel between a refrigerant side outlet of the first heat exchanger and the second valve, the first valve is connected with a heat accumulator, a seventh valve, the absorption refrigeration system and the third valve are connected in parallel after the tail end of the heat accumulator is communicated with the second valve, and the seventh valve is connected with the second circulating water pump; the absorption type large-temperature-difference heat exchanger unit comprises a second heat exchanger and a first generator connected with an outlet of the third valve, the first generator is connected with a heat medium inlet of the second heat exchanger, a heat medium outlet of the second heat exchanger is connected with a first evaporator, and the first evaporator is connected with the second circulating water pump; the external heat supply and water return pipeline is respectively connected with a first absorber and a refrigerant side inlet of the second heat exchanger, an outlet of the first absorber is connected with a first condenser, and an outlet of the first condenser is communicated with a refrigerant side outlet of the second heat exchanger and then is connected with an external heat supply and water supply pipeline; the absorption refrigeration system comprises a fourth valve, and a seventh valve, the fourth valve and the third valve are connected in parallel after the tail end of the heat accumulator is communicated with the second valve; the absorption chiller comprises a second evaporator, a second absorber, a second generator and a second condenser; the outlet of the fourth valve is connected with the second generator, and the outlet of the second generator is communicated with the outlet of the first evaporator and then is connected with the inlet of the second circulating water pump; an external refrigeration water return pipeline is connected with an inlet of the second evaporator, an outlet of the second evaporator is respectively connected with a fifth valve and a sixth valve, the fifth valve is connected with a cold accumulation body, and an outlet of the cold accumulation body is communicated with an outlet of the sixth valve and then is connected with an external refrigeration water supply pipeline; the second condenser, the second absorber and the radiator form closed circulation connection;
The low-temperature nuclear heating stack generates high-temperature hot water, and the high-temperature hot water enters the first heat exchanger through the first circulating water pump and heats secondary circulating water in the first heat exchanger; the cooled circulating water is discharged out of the first heat exchanger and returned to the low-temperature nuclear heating stack to form a closed cycle; the heated secondary circulating water is discharged out of the first heat exchanger and enters an absorption heat supply system and an absorption refrigeration system, the two systems can be operated independently or simultaneously, the water flow entering the two systems can be regulated according to the actual power, and the energy storage energy of the heat accumulator and the cold accumulator is regulated to realize the overall energy balance; hot water entering the absorption heat supply system and hot water entering the absorption refrigeration system are cooled and then returned to the second circulating water pump, and after being pressurized by the second circulating water pump, the hot water enters the first heat exchanger.
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| CN201910664892.8A CN110307668B (en) | 2019-07-23 | 2019-07-23 | Nuclear energy cold and hot combined supply system based on absorption technology |
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| CN206146010U (en) * | 2016-11-01 | 2017-05-03 | 云南师范大学 | Cold and hot antithetical couplet that utilizes solar energy slot type spotlight supplies system |
| CN208671413U (en) * | 2018-07-17 | 2019-03-29 | 南华大学 | Low-temperature nuclear heat supplying pile heat and cold supplier |
| CN209013523U (en) * | 2018-10-16 | 2019-06-21 | 北京北变微电网技术有限公司 | The cold-hot combined supply system that mid-deep strata underground heat is coupled with photo-thermal |
| CN210292423U (en) * | 2019-07-23 | 2020-04-10 | 同方节能装备有限公司 | Nuclear energy cold and heat combined supply system based on absorption technology |
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