CN105240968A - Energy storage system for achieving cold storage in summer by means of thermal storage water tank - Google Patents
Energy storage system for achieving cold storage in summer by means of thermal storage water tank Download PDFInfo
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- CN105240968A CN105240968A CN201510580196.0A CN201510580196A CN105240968A CN 105240968 A CN105240968 A CN 105240968A CN 201510580196 A CN201510580196 A CN 201510580196A CN 105240968 A CN105240968 A CN 105240968A
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- cold
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- driven valve
- storage
- storage system
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 238000004146 energy storage Methods 0.000 title claims abstract description 21
- 238000009825 accumulation Methods 0.000 claims description 39
- 238000005057 refrigeration Methods 0.000 claims description 20
- 238000004378 air conditioning Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 abstract description 10
- 238000007599 discharging Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0007—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning
- F24F5/0017—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater cooling apparatus specially adapted for use in air-conditioning using cold storage bodies, e.g. ice
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to an energy storage system for achieving cold storage in summer by means of a thermal storage water tank. The energy storage system for achieving cold storage in summer by means of the thermal storage water tank is characterized in that the energy storage system comprises a thermal storage system and a cold storage system connected with the thermal storage system; the cold storage system comprises a thermal/cold storage water tank, a plurality of electrically operated valves, a cold storage circulating pump, a cold discharging circulating pump, a chilled water storage plate heat exchanger, a refrigerating unit and related pipelines; a chilled water storage system enters a cold storage working condition through switch of the electrically operated valves, and the refrigerating unit performs cold charging on the cold/thermal storage water tank in full swing in the night off-peak electricity period; during operation in the daytime, the chilled water storage system enters a cold discharging working condition through switch of the electrically operated valves, cold is discharged in the power peak period, power peak shaving and valley filling are conducted on power consumption in the daytime, and the electric energy consumption and the operating cost of the whole energy storage system are reduced.
Description
Technical field
The invention belongs to electrical thermal storage technical field, particularly a kind of energy-storage system utilizing hot water storage tank to realize cool-storage in summer.
Background technology
At present, for effectively preventing and remedying pollution, country determines that, fuel consume coal-fired from control is started with on the one hand, progressively limits large-and-medium size cities fire coal, the quantity of oil burning boiler, capacity, use region, greatly develops clean energy resource, environmental protect.On the other hand, as a part for market economy, government department utilizes lever of price macro adjustments and controls energy general layout, has put into effect a series of preferential electricity consumption policy, such as: carry out the behave such as Peak-valley TOU power price and deduction and exemption power capacity increasing tariff.This brings opportunity to the application and development of electrical thermal storage technology.Electrical thermal storage technology refers to and is prepared at night electricity low-valley interval by all or part of of heat (or cold) needed for building daytime, and stores for daytime with the form of hot water (or cold water and ice).Electrical thermal storage technology and energy-storage system are alleviating the advantage in peak-trough electricity contradiction with uniqueness.
Electrical thermal storage system is arranged on high-rise usually, sets up and to need to consider initial investment cost and expense return period during electrical thermal storage system.Same skyscraper is installed two cover accumulation of heats simultaneously, cold accumulation system has that investment cost is high, take up room large shortcoming.And the energy-storage system on market generally includes the energy-storage system of non-phase-change material medium and the energy-storage system of phase-change material medium.Energy-storage system many employings water of common non-phase change medium, as heat storage medium, utilizes the thermal capacity of water, carrys out storage power by the temperature changing water.Although it has the advantage of the expense of cheap, easy withdrawal initial cost.But the space shared by this type of energy-storage system is larger.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, there is provided a kind of reasonable in design, initial investment expense is low, take up room little and can realize simultaneously accumulation of heat, cold-storage two kinds of energy accumulation mode the hot water storage tank that utilizes utilizing hot water storage tank to realize cool-storage in summer realize the energy-storage system of cool-storage in summer.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of energy-storage system utilizing hot water storage tank to realize cool-storage in summer, comprise hold over system and cold accumulation system, described hold over system comprises air conditioning hot circulating pump, heat supply heat-exchangers of the plate type, heat accumulation water pump, electric hot water, hot water storage tank, and described air conditioning hot circulating pump, heat-exchangers of the plate type, heat accumulation water pump, electric hot water, hot water storage tank are linked together by pipeline; Described hot water storage tank is accumulation of heat/cold water storage cistern that hold over system and cold accumulation system share; Described cold accumulation system comprises: accumulation of heat/cold water storage cistern, multiple motor-driven valve, charge cycle pump, let cool circulating pump, the board-like radiator of water cold storage, refrigeration unit; One end of described accumulation of heat/cold water storage cistern is connected with one end of the 8th motor-driven valve V-8 with the 5th motor-driven valve V-5 respectively, the other end of described accumulation of heat/cold water storage cistern is connected with one end of the 7th motor-driven valve V-7 with the 6th motor-driven valve V-6 respectively, described 5th motor-driven valve V-5 is connected with the first port of water cold storage plate type heat exchanger with the other end of the 6th motor-driven valve V-6, described 7th motor-driven valve V-7 is connected with one end of charge cycle pump with the 8th motor-driven valve V-8 other end, and the second port of the other end water cold storage plate type heat exchanger of described charge cycle pump is connected; 3rd port of described water cold storage plate type heat exchanger is connected alternately with one end of the second motor-driven valve V-2 and the 4th motor-driven valve V-4, the other end of described second motor-driven valve V-2 is connected with one end of refrigeration unit, and the other end of described refrigeration unit is connected with one end of the first motor-driven valve V-1, the 3rd motor-driven valve V-3 respectively; The other end of described first motor-driven valve V-1 is connected with the one end letting cool circulating pump, described in let cool circulating pump the 4th port of the other end and water cold storage plate type heat exchanger be connected; The other end of described 3rd motor-driven valve V-3 is connected with the other end of the 4th motor-driven valve V-4.
And described refrigeration unit is centrifugal chiller or earth source heat pump unit.
And described charge cycle pump adopts cold-storage frequency variable circulating pump.
Advantage of the present invention and good effect are:
1, the present invention utilizes common hot water storage tank as accumulation of heat, cold-storage device, a set of energy-storage system realizes accumulation of heat, cold-storage two kinds of energy accumulation mode simultaneously, effectively make use of the hot water storage tank left unused summer and carry out cold-storage, reduce system initial cost, decrease the space hold of system simultaneously.
2, the present invention carries out water cold storage optimization on accumulation of heat process base, configuration complete set, practical chilled water storage system, this system comprises accumulation of heat/cold water storage cistern, multiple motor-driven valve, charge cycle pump, lets cool circulating pump, the board-like radiator of water cold storage, refrigeration unit and relevant pipeline thereof; During night dip electricity, chilled water storage system enters charging by motor-driven valve switching, earth source heat pump unit carries out filling cold to cold-storage/boiler with all strength, when running by day, chilled water storage system enters discharging by motor-driven valve switching, peak electricity period released cold quantity, to day electricity peak load shifting, reduces power consumption and whole energy-storage system operating cost.
Accompanying drawing explanation
Fig. 1 is system connection diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail:
A kind of energy-storage system utilizing hot water storage tank to realize cool-storage in summer, as shown in Figure 1, comprise hold over system and cold accumulation system, described hold over system comprises air conditioning hot circulating pump, heat supply heat-exchangers of the plate type, heat accumulation water pump, electric hot water, hot water storage tank, and described air conditioning hot circulating pump, heat-exchangers of the plate type, heat accumulation water pump, electric hot water, hot water storage tank are linked together by pipeline; Described hot water storage tank is accumulation of heat/cold water storage cistern that hold over system and cold accumulation system share; Described cold accumulation system comprises: accumulation of heat/cold water storage cistern, multiple motor-driven valve, charge cycle pump, let cool circulating pump, the board-like radiator of water cold storage, refrigeration unit; One end of described accumulation of heat/cold water storage cistern is connected with one end of the 8th motor-driven valve V-8 with the 5th motor-driven valve V-5 respectively, the other end of described accumulation of heat/cold water storage cistern is connected with one end of the 7th motor-driven valve V-7 with the 6th motor-driven valve V-6 respectively, described 5th motor-driven valve V-5 is connected with the first port of water cold storage plate type heat exchanger with the other end of the 6th motor-driven valve V-6, described 7th motor-driven valve V-7 is connected with one end of charge cycle pump with the 8th motor-driven valve V-8 other end, and the second port of the other end water cold storage plate type heat exchanger of described charge cycle pump is connected; 3rd port of described water cold storage plate type heat exchanger is connected alternately with one end of the second motor-driven valve V-2 and the 4th motor-driven valve V-4, the other end of described second motor-driven valve V-2 is connected with one end of refrigeration unit, and the other end of described refrigeration unit is connected with one end of the first motor-driven valve V-1, the 3rd motor-driven valve V-3 respectively; The other end of described first motor-driven valve V-1 is connected with the one end letting cool circulating pump, described in let cool circulating pump the 4th port of the other end and water cold storage plate type heat exchanger be connected; The other end of described 3rd motor-driven valve V-3 is connected with the other end of the 4th motor-driven valve V-4.
Wherein, refrigeration unit can adopt centrifugal chiller or earth source heat pump unit; Charge cycle pump adopts cold-storage frequency variable circulating pump.
Chilled water storage system of the present invention, using refrigeration unit as cold accumulation cold source, is supplied return pipe skirt road to accumulation of heat/cold water storage cistern from refrigeration unit, is switched by motor-driven valve, fills cold during night dip electricity to water tank with all strength.When running by day, system enters discharging by motor-driven valve switching.This chilled water storage system can realize water cold storage operating mode, discharging, water cold storage and refrigeration host computer air conditioning operating mode and the independent cooling of refrigeration host computer four kinds of operating modes in running, each operating condition of this chilled water storage system is switched by corresponding motor-driven valve, simultaneously according to end load variations situation, regulate the frequency of charge cycle pump, ensure the supply water temperature of terminal stabilization.In the present embodiment, charge cycle pump is fixed frequency under water cold storage operating mode; Under discharging, adopt frequency conversion, regulate the frequency of charge cycle pump.
Under four kinds of operating modes of chilled water storage system of the present invention, electrically operated valve control method is:
The Controlling principle of chilled water storage system of the present invention is:
By the load prediction module in the control system of chilled water storage system, current loads is analyzed, in conjunction with the optimum composition method of each operating condition of control algolithm determination chilled water storage system, simultaneously according to system temperature and pressure and other parameters, the action in time such as different executing agency (electrically operated valve and charge cycle pump frequency conversion device) in adjustment chilled water storage system, guarantee that the change that chilled water storage system can follow load in time regulates, ensure the cooling effect of refrigeration unit, and with the most reliable, stable mode is run, the conversion of operation reserve can be carried out, refrigeration unit is made to remain at high load capacity COP running status, in conjunction with factors such as outdoor parameter and electrovalence policies, controller is organized a performance to count and is run start and stop, and accumulation of energy and exoergic, refrigeration unit is kept to run under condition the most economic, make it to produce not only economy but also energy-conservation effect.
The Equipments Setting table of chilled water storage system of the present invention is:
This chilled water storage system shows in running, for 0:00-5:00 for low-valley interval, and chilled water storage system operably source source pump cold-storage pattern automatically.During this period, if use 2 source, tableland source pump, and the cold that this earth source heat pump unit exports is all for water cold storage, and total cold storage capacity is about 3090RTh.
Chilled water storage system of the present invention is estimated every day and can shift peak-valley electric energy to be about 3035kWh, summer calculated by 150 days, then this chilled water storage system effectively can shift peak-valley electric energy every year and is about 45.5 ten thousand kWh, effectively can reduce peak electricity period standard coal consumption about 163.8 tons, reduce peak electricity period CO2 emissions about 429.2 tons.
It is emphasized that; embodiment of the present invention is illustrative; instead of it is determinate; therefore the present invention includes the embodiment be not limited to described in detailed description of the invention; every other embodiments drawn by those skilled in the art's technical scheme according to the present invention, belong to the scope of protection of the invention equally.
Claims (3)
1. the energy-storage system utilizing hot water storage tank to realize cool-storage in summer, comprise hold over system and cold accumulation system, described hold over system comprises air conditioning hot circulating pump, heat supply heat-exchangers of the plate type, heat accumulation water pump, electric hot water, hot water storage tank, and described air conditioning hot circulating pump, heat-exchangers of the plate type, heat accumulation water pump, electric hot water, hot water storage tank are linked together by pipeline; It is characterized in that: described hot water storage tank is accumulation of heat/cold water storage cistern that hold over system and cold accumulation system share; Described cold accumulation system comprises: accumulation of heat/cold water storage cistern, multiple motor-driven valve, charge cycle pump, let cool circulating pump, the board-like radiator of water cold storage, refrigeration unit; One end of described accumulation of heat/cold water storage cistern is connected with one end of the 8th motor-driven valve V-8 with the 5th motor-driven valve V-5 respectively, the other end of described accumulation of heat/cold water storage cistern is connected with one end of the 7th motor-driven valve V-7 with the 6th motor-driven valve V-6 respectively, described 5th motor-driven valve V-5 is connected with the first port of water cold storage plate type heat exchanger with the other end of the 6th motor-driven valve V-6, described 7th motor-driven valve V-7 is connected with one end of charge cycle pump with the 8th motor-driven valve V-8 other end, and the second port of the other end water cold storage plate type heat exchanger of described charge cycle pump is connected; 3rd port of described water cold storage plate type heat exchanger is connected alternately with one end of the second motor-driven valve V-2 and the 4th motor-driven valve V-4, the other end of described second motor-driven valve V-2 is connected with one end of refrigeration unit, and the other end of described refrigeration unit is connected with one end of the first motor-driven valve V-1, the 3rd motor-driven valve V-3 respectively; The other end of described first motor-driven valve V-1 is connected with the one end letting cool circulating pump, described in let cool circulating pump the 4th port of the other end and water cold storage plate type heat exchanger be connected; The other end of described 3rd motor-driven valve V-3 is connected with the other end of the 4th motor-driven valve V-4.
2. a kind of energy-storage system utilizing hot water storage tank to realize cool-storage in summer according to claim 1, is characterized in that: described refrigeration unit is centrifugal chiller or earth source heat pump unit.
3. a kind of energy-storage system utilizing hot water storage tank to realize cool-storage in summer according to claim 1, is characterized in that: described charge cycle pump adopts cold-storage frequency variable circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580196.0A CN105240968A (en) | 2015-09-11 | 2015-09-11 | Energy storage system for achieving cold storage in summer by means of thermal storage water tank |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510580196.0A CN105240968A (en) | 2015-09-11 | 2015-09-11 | Energy storage system for achieving cold storage in summer by means of thermal storage water tank |
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| CN201510580196.0A Pending CN105240968A (en) | 2015-09-11 | 2015-09-11 | Energy storage system for achieving cold storage in summer by means of thermal storage water tank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674511A (en) * | 2016-03-30 | 2016-06-15 | 杭州华电能源工程有限公司 | Unattended peak-adjustable central air conditioning cold and heat source mode system and control method thereof |
| CN105697137A (en) * | 2016-01-22 | 2016-06-22 | 北京建工建筑设计研究院 | Building complex combined energy system and method thereof |
| CN107062482A (en) * | 2017-04-18 | 2017-08-18 | 深圳佩尔优科技有限公司 | A kind of air-conditioning system and its control method |
| CN108775611A (en) * | 2018-07-03 | 2018-11-09 | 青岛福格节能环保工程有限公司 | It comprehensively utilizes clean energy resource and produces the cold-hot combined supply system of waste heat |
| CN110702851A (en) * | 2019-09-09 | 2020-01-17 | 中国建筑西北设计研究院有限公司 | Performance test system and method for phase change energy storage device |
| CN113701266A (en) * | 2020-05-20 | 2021-11-26 | 北京新元瑞普科技发展有限公司 | Energy storage type heat exchange system and heat exchange method of energy storage type heat exchange system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697137A (en) * | 2016-01-22 | 2016-06-22 | 北京建工建筑设计研究院 | Building complex combined energy system and method thereof |
| CN105697137B (en) * | 2016-01-22 | 2018-12-04 | 北京建工建筑设计研究院 | Bombyx Botryticatus combines energy resource system and its method |
| CN105674511A (en) * | 2016-03-30 | 2016-06-15 | 杭州华电能源工程有限公司 | Unattended peak-adjustable central air conditioning cold and heat source mode system and control method thereof |
| CN105674511B (en) * | 2016-03-30 | 2018-07-31 | 杭州华电能源工程有限公司 | Unattended can peak regulation cool hot source of centralized Air conditioning system modular system and its control method |
| CN107062482A (en) * | 2017-04-18 | 2017-08-18 | 深圳佩尔优科技有限公司 | A kind of air-conditioning system and its control method |
| CN107062482B (en) * | 2017-04-18 | 2019-08-09 | 深圳佩尔优科技有限公司 | A kind of air-conditioning system and its control method |
| CN108775611A (en) * | 2018-07-03 | 2018-11-09 | 青岛福格节能环保工程有限公司 | It comprehensively utilizes clean energy resource and produces the cold-hot combined supply system of waste heat |
| CN108775611B (en) * | 2018-07-03 | 2019-04-26 | 青岛福格节能环保工程有限公司 | It comprehensively utilizes clean energy resource and produces the cold-hot combined supply system of waste heat |
| CN110702851A (en) * | 2019-09-09 | 2020-01-17 | 中国建筑西北设计研究院有限公司 | Performance test system and method for phase change energy storage device |
| CN113701266A (en) * | 2020-05-20 | 2021-11-26 | 北京新元瑞普科技发展有限公司 | Energy storage type heat exchange system and heat exchange method of energy storage type heat exchange system |
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Effective date of registration: 20170420 Address after: 300301 Tianjin City, Dongli District, Dongli Tourism Development Corporation building, room 233 Applicant after: Tianjin Energy Saving Service Co., Ltd. Applicant after: State Grid Tianjin Electric Power Company Applicant after: State Grid Corporation of China Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant before: State Grid Tianjin Electric Power Company Applicant before: State Grid Corporation of China |
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160113 |