CN117811049A - Intelligent online electricity storage and cold accumulation system of data center, air conditioner and control method - Google Patents
Intelligent online electricity storage and cold accumulation system of data center, air conditioner and control method Download PDFInfo
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- CN117811049A CN117811049A CN202311855282.9A CN202311855282A CN117811049A CN 117811049 A CN117811049 A CN 117811049A CN 202311855282 A CN202311855282 A CN 202311855282A CN 117811049 A CN117811049 A CN 117811049A
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- 230000005611 electricity Effects 0.000 title claims abstract description 157
- 238000009825 accumulation Methods 0.000 title claims abstract description 143
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 324
- 238000005057 refrigeration Methods 0.000 claims abstract description 78
- 238000004146 energy storage Methods 0.000 claims abstract description 50
- 238000001816 cooling Methods 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 23
- 230000005855 radiation Effects 0.000 claims description 17
- 238000005086 pumping Methods 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20709—Modifications to facilitate cooling, ventilating, or heating for server racks or cabinets; for data centers, e.g. 19-inch computer racks
- H05K7/20763—Liquid cooling without phase change
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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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)
- Power Engineering (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Emergency Management (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Business, Economics & Management (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention discloses an intelligent online electricity storage and cold accumulation system of a data center, an air conditioner and a control method, comprising the following steps: the refrigerating device is used for manufacturing low-temperature water and is provided with a photovoltaic device or a commercial power device for double power supply; the energy storage battery is used for being connected with the refrigerating device and is used for storing electricity by the photovoltaic device or the commercial power device; the cold accumulation tank is used for storing low-temperature water output by the refrigerating device; and the tail end of the system is used for refrigerating the low-temperature water stored in the cold storage tank or the low-temperature water manufactured by the refrigerating device and returning the refrigerated water to the refrigerating device. The intelligent online electricity storage and cold accumulation system of the data center can flexibly change an electricity storage and cold accumulation mode, a discharge and cold accumulation mode and a discharge and cold accumulation mode according to solar energy and peak-valley electricity prices to enable the tail end of the system to refrigerate, so that the operation time of the intelligent online electricity storage and cold accumulation system of the data center when the refrigeration energy efficiency is high can be prolonged, the refrigeration energy efficiency of an air conditioner is higher, the operation is more stable, and the energy conservation and the carbon reduction are realized.
Description
Technical Field
The invention relates to the technical field of refrigeration, in particular to an intelligent online electricity storage and cold accumulation system of a data center, an air conditioner and a control method.
Background
With the development of the big data age, in the IDC industry, various devices of a data center room are perfectly upgraded. Especially, after the mobile communication system enters the 5G era, the phenomenon that the heat dissipation capacity of a machine room is gradually increased and the problem of energy consumption of a machine room refrigerating system are widely focused on all the communities.
The data center belongs to high-energy-consumption equipment, and electric energy consumed by the data center equipment finally generates heat energy. In order to ensure the normal operation of data center equipment, a large amount of cold energy is required to be supplied, and the requirement of a data center machine room on a refrigerating system is that the cooling is continuously supplied for 24 hours a day throughout the year. The traditional refrigeration system of the data center machine room comprises the following components: the room level, the inter-column level and the cabinet level are all characterized by high power consumption and underutilization of renewable energy sources.
In order to solve the above problems, each large manufacturer proposes the following solutions:
1. when sunlight is sufficient in daytime, the normal refrigeration function of the refrigeration system of the data center machine room is maintained, and then electricity is stored into the energy storage battery, so that the refrigeration system of the data center machine room can generate electricity and refrigerate by using the energy storage battery at night or in the condition of insufficient illumination. However, if the cooling system is in insufficient illumination for a long time, the cooling function of the cooling system of the data center machine room is reduced, even the cooling system is stopped, and then the heat dissipation capacity of the data center machine room cannot be timely dissipated, so that the stability is poor.
2. The normal refrigeration function of the refrigeration system of the data center machine room is maintained by using the mains supply, but in order to reduce the electricity price, the energy storage battery is charged when the electricity price is in the valley value, so that the refrigeration system of the data center machine room generates electricity and refrigerates by using the energy storage battery when the electricity price is in the peak value. However, because the duration of the peak electricity price is longer than the duration of the valley electricity price, especially in summer, the data center room cooling system inevitably uses the peak electricity price to maintain the normal cooling function of the data center room cooling system, resulting in high electricity price costs.
Therefore, the invention provides a novel intelligent online electricity storage and cold accumulation system of the data center, which can better utilize solar energy and commercial power to maintain the normal refrigeration function of an air cooling system of a computer room of the data center, thereby better saving energy and reducing carbon.
Disclosure of Invention
In view of the above, the invention provides an intelligent online electricity storage and cold accumulation system of a data center, an air conditioner and a control method, which are used for solving the problem that in the prior art, an air cooling system of a machine room of the data center simultaneously utilizes solar energy and commercial power for refrigeration.
In order to achieve one or a part or all of the above or other objects, the technical scheme of the invention is an intelligent online electricity storage and cold accumulation system of a data center, comprising:
The refrigerating device is used for manufacturing low-temperature water and is provided with a photovoltaic device or a commercial power device for double power supply;
the energy storage battery is used for being connected with the refrigerating device, and the photovoltaic device or the commercial power device stores electricity for the energy storage battery;
the cold accumulation tank is used for storing low-temperature water output by the refrigerating device;
and the tail end of the system is used for refrigerating the low-temperature water stored in the cold storage tank or the low-temperature water manufactured by the refrigerating device and conveying the refrigerated water back to the refrigerating device.
Further, a first pipeline is arranged between the water outlet end of the refrigerating device and the water inlet end of the cold accumulation tank, a first water storage valve is arranged on one side, close to the water inlet end of the cold accumulation tank, of the first pipeline, and the first water storage valve is used for enabling low-temperature water manufactured by the refrigerating device to be input into the cold accumulation tank.
Further, a second pipeline is arranged between the water outlet end of the refrigerating device and the water inlet end of the refrigerating device, and a water return valve is arranged on the second pipeline and is used for enabling the unqualified low-temperature water manufactured by the refrigerating device to flow back to the refrigerating device.
Further, a first temperature sensor is arranged on one side, close to the water outlet end of the refrigerating device, of the first pipeline, and the first temperature sensor is used for detecting the temperature of low-temperature water output by the water outlet end of the refrigerating device.
Further, a third pipeline is arranged between the water outlet end of the refrigerating device and the water inlet end of the system tail end, and a water supply valve is arranged on the third pipeline and is used for inputting low-temperature water manufactured by the refrigerating device into the system tail end.
Further, a fourth pipeline is arranged between the water outlet end of the cold accumulation tank and the water inlet end of the tail end of the system, a water drain valve is arranged on the fourth pipeline, and the water drain valve is used for inputting low-temperature water stored in the cold accumulation tank into the tail end of the system.
Further, a liquid level sensor and a second temperature sensor are arranged in the cold accumulation tank;
the liquid level sensor is used for detecting the liquid level of the low-temperature water stored in the cold storage tank;
the second temperature sensor is used for detecting the temperature of the low-temperature water stored in the cold storage tank.
Further, a fifth pipeline is arranged between the water inlet end of the refrigerating device and the water outlet end of the tail end of the system, and a water pumping device is arranged on the fifth pipeline and used for returning the water after the tail end of the system is refrigerated to the refrigerating device.
An air conditioner comprises the intelligent online electricity storage and cold accumulation system of the data center.
The control method of the air conditioner comprises the following steps:
detecting lighting total radiation quantity of a photovoltaic device when an air conditioner is electrified and started, and judging whether the lighting total radiation quantity is in a first preset interval or not;
when the air conditioner is judged to be powered by the photovoltaic device, and when the air conditioner is stable in operation, the air conditioner is switched to an electricity storage and cold accumulation mode;
and when the air conditioner is judged to be not powered by the mains supply device, and the running state of the air conditioner is regulated according to the price of the mains supply.
Further, according to the utility power price, adjust the running state of air conditioner, include:
detecting whether the current commercial power price is in a valley value or not;
if so, switching to an electricity storage and cold accumulation mode when the operation of the air conditioner is stable;
if not, the running state of the air conditioner is regulated according to the refrigerating energy efficiency of the air conditioner.
Further, the operation state of the air conditioner is adjusted according to the refrigeration energy efficiency of the air conditioner, comprising:
judging whether the refrigeration energy efficiency of the air conditioner is in a second preset interval or not;
when the judgment is yes, switching to a discharge cold accumulation mode when the operation of the air conditioner is stable;
and when the air conditioner is in a stable operation state, switching to a discharging and cooling mode.
Further, the electricity storage and cold accumulation mode is as follows:
Part of current flows to the energy storage battery to store electricity, and part of low-temperature water manufactured by the refrigerating device flows into the cold storage tank to store electricity;
the discharging cold accumulation mode is as follows:
the energy storage battery supplies power to the refrigerating device, and the low-temperature water manufactured by the refrigerating device partially flows into the cold storage tank for storage;
the discharging and cooling mode is as follows:
the energy storage battery supplies power to the refrigerating device, and low-temperature water stored in the cold storage tank flows to the tail end of the system.
Further, when the air conditioner is in the electricity storage and cold accumulation mode, the control method further comprises the following steps:
detecting the liquid level of the low-temperature water stored in the cold storage tank;
judging whether the liquid level reaches a first threshold value;
if so, the low-temperature water manufactured by the refrigeration device is controlled not to flow to the cold storage tank.
Further, when the air conditioner is in the discharge cooling mode, the control method further comprises:
detecting the temperature of low-temperature water stored in the cold storage tank;
judging whether the temperature reaches a second threshold value;
if yes, the low-temperature water produced by the refrigerating device is controlled to directly flow to the tail end of the system.
Compared with the prior art, the invention has at least the following beneficial effects:
according to the intelligent online electricity storage and cold accumulation system of the data center, corresponding modes can be flexibly changed according to solar energy and peak-to-valley electricity prices, so that the tail end of the system can refrigerate, when the lighting total radiation quantity of the photovoltaic device is in a first preset interval, the control center judges that sunlight is sufficient, and at the moment, the intelligent online electricity storage and cold accumulation system of the data center utilizes solar energy to generate electricity and enters an electricity storage and cold accumulation mode; when the lighting total radiation quantity of the photovoltaic device of the intelligent online electricity storage and cold accumulation system of the data center is not in a first preset interval, the commercial power device is used for supplying power, and when the electricity price is in a valley value, the intelligent online electricity storage and cold accumulation system of the data center enters an electricity storage and cold accumulation mode; when the electricity price is changed from a valley value to a peak value or a flat value, the intelligent online electricity storage and cold accumulation system of the data center is also switched from an electricity storage and cold accumulation mode to a discharge and cold accumulation mode, electricity stored in the valley value electricity price is utilized to supply power to the refrigerating device in the peak value electricity price, and when the refrigerating energy efficiency is changed from high to low, the intelligent online electricity storage and cold accumulation system of the data center is switched from the discharge and cold accumulation mode to the discharge and cold accumulation mode, so that the operation duration of the intelligent online electricity storage and cold accumulation system of the data center in the high refrigerating energy efficiency can be prolonged, the refrigerating energy efficiency of an air conditioner is higher, and the operation is more stable, thereby realizing energy conservation and carbon reduction.
Drawings
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the terms "comprising" and "having" and any variations thereof in the description of the invention and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of an intelligent online electricity storage and cold accumulation system of a data center in an embodiment of the invention;
FIG. 2 is a schematic diagram of an intelligent online electricity storage and cold accumulation system of a data center in another embodiment of the invention; the method comprises the steps of carrying out a first treatment on the surface of the
Fig. 3 is a flowchart of a control method of an air conditioner according to the present invention.
Reference numerals:
10. a refrigerating device;
11. a cold accumulation tank; 12. a first water storage valve; 13. a first pipe; 14. a water return valve; 15. a second pipe; 16. a first temperature sensor; 17. a water supply valve; 18. a third conduit; 19. a water drain valve; 20. a fourth conduit; 21. a liquid level sensor; 22. a second temperature sensor; 23. a water pumping device; 24. a fifth pipe; 25. a second water storage valve;
30. a photovoltaic device;
40. a mains supply device;
50. an energy storage battery;
60. the end of the system.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. Thus, reference throughout this specification to one feature will be used in order to describe one embodiment of the invention, not to imply that each embodiment of the invention must be in the proper motion. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.
The principles and structures of the present invention are described in detail below with reference to the drawings and the examples.
In one embodiment, referring to fig. 1 and 3, the present invention provides an intelligent online electricity storage and cold accumulation system of a data center, including:
a refrigerating device 10 for producing low-temperature water, and a photovoltaic device 30 or a commercial power device 40 for double-supplying power to the refrigerating device 10; the temperature of the low-temperature water is preferably 7-12 ℃, and of course, in practical application, the temperature of the low-temperature water can also be set according to practical situations, and the method is not limited.
The energy storage battery 50 is used for being connected with the refrigerating device 10, and the photovoltaic device 30 or the commercial power device 40 stores electricity for the energy storage battery 50.
A cold storage tank 11 for storing low-temperature water outputted from the refrigerating apparatus 10.
And a system end 60 for refrigerating the low-temperature water stored in the cold storage tank 11 or the low-temperature water manufactured by the refrigerating device 10 and returning the refrigerated water to the refrigerating device 10. The system end 60 is preferably a refrigeration end placed in a data center room, as is the case in full.
The intelligent online electricity storage and cold accumulation system of the data center is further provided with a control center; the refrigeration unit 10 includes a condenser, an evaporator, and the like.
When the intelligent online electricity and cold storage system of the data center is powered and operated by the photovoltaic device 30 or the commercial power device 40, the water inlet end of the refrigerating device 10 starts to input water, then the refrigerating device 10 makes the water input by the water inlet end into low-temperature water, and then flows to the tail end 60 of the system from the water outlet end of the refrigerating device 10, so that the tail end 60 of the system refrigerates to a data center machine room, at the moment, the intelligent online electricity and cold storage system of the data center is stably operated, the water outlet end of the refrigerating device 10 can store part of the low-temperature water to the cold storage tank 11, and the photovoltaic device 30 or the commercial power device 40 can store part of electric quantity to the energy storage battery 50.
Referring to fig. 3, the intelligent online electric storage and cold accumulation system of the data center has the following modes:
1. when the lighting total radiation quantity of the photovoltaic device 30 is more than or equal to 2.88kWh/m 2 When the intelligent online electricity storage and cold accumulation system of the data center generates electricity by the photovoltaic device 30 preferentially and does not adopt the commercial power device 40 for supplying electricity, at the moment, the electric quantity generated by the photovoltaic device 30 only provides the refrigerating device 10 for manufacturing low-temperature water, the low-temperature water directly flows to the tail end 60 of the system, the tail end 60 of the system normally refrigerates to a machine room of the data center, and then the intelligent online electricity storage and cold accumulation system of the data center enters an electricity storage and cold accumulation mode:
(1) At this time, the electric power generated by the photovoltaic device 30 provides the refrigeration device 10 to manufacture low-temperature water, and at the same time, part of the electric power flows to the energy storage battery 50 to store electricity.
(2) At this time, the low-temperature water produced by the refrigerating apparatus 10 flows to the system end 60 to cool, and at the same time, a part of the low-temperature water flows to the cold storage tank 11 to be stored.
2. When the total amount of lighting radiation of the photovoltaic device 30 is less than 2.88kWh/m 2 When the intelligent online electricity storage and cold accumulation system of the data center is powered by the commercial power device 40 preferentially, the photovoltaic device 30 is not used for generating electricity, and at the moment, the intelligent online electricity storage and cold accumulation system of the data center also needs to judge whether the current electricity price is in a valley value or not.
(1) If the electricity price is at the valley value, the electric quantity of the commercial power device 40 only provides the refrigerating device 10 to produce low-temperature water, and the low-temperature water directly flows to the system tail end 60, so that the system tail end 60 can normally refrigerate to the data center machine room, and then the intelligent online electricity storage and cold accumulation system of the data center enters an electricity storage and cold accumulation mode:
(1) at this time, the electric power generated by the utility power device 40 provides the low-temperature water to the refrigeration device 10, and at the same time, a part of the electric power flows to the energy storage battery 50 for storing electricity.
(2) At this time, the low-temperature water produced by the refrigerating apparatus 10 flows to the system end 60 to cool, and at the same time, a part of the low-temperature water flows to the cold storage tank 11 to be stored.
(2) If the electricity price is not in the valley value, namely the electricity price is in the peak value or the flat value, the intelligent online electricity storage and cold accumulation system of the data center needs to judge the current refrigeration energy efficiency, wherein the refrigeration energy efficiency cop=the refrigeration capacity/electricity consumption, the refrigeration energy efficiency COP of the data center machine room of each city is different, but when the refrigeration energy efficiency COP of most cities is less than 4, the intelligent online electricity storage and cold accumulation system of the data center can judge that the refrigeration energy efficiency is low; and otherwise, if the COP of the refrigeration energy efficiency is more than or equal to 4, judging that the refrigeration energy efficiency is high. Of course, the refrigeration efficiency COP can be defined according to the actual situation, and is not limited herein.
And when the refrigerating energy efficiency of the intelligent online electric storage and cold accumulation system of the data center is high, the electric quantity of the commercial power device 40 is only used for manufacturing low-temperature water by the refrigerating device 10, the low-temperature water directly flows to the system tail end 60, the system tail end 60 is enabled to normally refrigerate the data center machine room, and then the intelligent online electric storage and cold accumulation system of the data center enters a discharging cold accumulation mode:
(1) at this time, the intelligent online electric storage and cold accumulation system of the data center does not use the commercial power device 40 to supply power, but the energy storage battery 50 is in a discharging state, i.e. the energy storage battery 50 supplies power to the refrigeration device 10 and enables the refrigeration device to operate. Once the electric quantity E of the energy storage battery 50 is less than or equal to 5%, the intelligent online electric storage and cold accumulation system of the data center is switched to the commercial power device 40 again to supply power, and the electric energy is not stored to the energy storage battery 50 at the moment, but is stored to the energy storage battery 50 when the electricity price is equal to the valley value.
(2) At this time, the low-temperature water produced by the refrigerating apparatus 10 flows to the system end 60 to cool, and at the same time, a part of the low-temperature water flows to the cold storage tank 11 to be stored.
And when the refrigerating energy efficiency of the intelligent online electric storage and cold accumulation system of the data center is low, the electric quantity of the commercial power device 40 is only used for manufacturing low-temperature water by the refrigerating device 10, the low-temperature water directly flows to the system tail end 60, the system tail end 60 normally refrigerates to a data center machine room, and then the intelligent online electric storage and cold accumulation system of the data center enters a discharging and cooling mode:
(1) at this time, the intelligent online electric storage and cold accumulation system of the data center does not use the commercial power device 40 to supply power, but the energy storage battery 50 is in a discharging state, i.e. the energy storage battery 50 supplies power to the refrigeration device 10 and enables the refrigeration device to operate. Once the electric quantity E of the energy storage battery 50 is less than or equal to 5%, the intelligent online electric storage and cold accumulation system of the data center is switched to the commercial power device 40 again to supply power, and the electric energy is not stored to the energy storage battery 50 at the moment, but is stored to the energy storage battery 50 when the electricity price is equal to the valley value.
(2) At this time, the low-temperature water produced by the refrigerating apparatus 10 is not directly cooled to the system terminal 60 but flows to the cold storage tank 11, and then the low-temperature water stored in the cold storage tank 11 flows to the system terminal 60 again to be cooled. When the second temperature sensor 22 detects that the temperature t2 of the low-temperature water stored in the cold storage tank 11 is greater than the second threshold value (the second threshold value is preferably 12 ℃) and the low-temperature water is uploaded to the control center, the control center stops the flow of the low-temperature water stored in the cold storage tank 11 to the system end 60, and switches to the flow of the low-temperature water produced by the refrigerating apparatus 10 to the system end 60 directly for refrigerating.
Meanwhile, when the low-temperature water produced by the refrigerating apparatus 10 flows to the cold storage tank 11 for storage, if the level sensor 21 detects that the level h1 of the low-temperature water stored in the cold storage tank 11 is equal to or greater than a first threshold value (the first threshold value is preferably 95%) and the low-temperature water is uploaded to the control center, the control center stops the low-temperature water produced by the refrigerating apparatus 10 from flowing to the cold storage tank 11, and switches to the low-temperature water produced by the refrigerating apparatus 10 to flow to the system end 60 for refrigeration.
Meanwhile, when the first temperature sensor 16 detects that the temperature t1 of the low-temperature water output by the water outlet end of the refrigeration device 10 is greater than a third threshold (the third threshold is any one of temperatures ranging from 7 ℃ to 12 ℃ and is exemplified by 12 ℃) and the temperature is uploaded to the control center, the control center judges that the low-temperature water output by the water outlet end of the refrigeration device 10 is unqualified at this time, and the unqualified low-temperature water flows back to the refrigeration device 10 again to be manufactured again until the qualified low-temperature water is output by the water outlet end of the refrigeration device 10, and the low-temperature water output by the water outlet end of the refrigeration device 10 flows to the cold storage tank 11 or the system tail end 60.
Therefore, the intelligent online electric power storage and cold accumulation system of the data center can switch the photovoltaic device 30 or the commercial power device 40 to supply power according to different conditions, namely the intelligent online electric power storage and cold accumulation system of the data center can flexibly change corresponding modes according to solar energy and peak-to-valley electricity prices to enable the tail end 60 of the system to refrigerate, and when the lighting total radiation quantity of the photovoltaic device 30 is more than or equal to 2.88kWh/m 2 When the solar energy is sufficient, the control center judges that the sunlight is sufficient, and the intelligent online electricity storage and cold accumulation system of the data center utilizes solar energy to generate electricity and enters an electricity storage and cold accumulation mode; the lighting total radiation quantity of the photovoltaic device 30 of the intelligent online electricity storage and cold accumulation system of the data center is less than 2.88kWh/m 2 When the electricity price is in the valley value, the intelligent online electricity storage and cold accumulation system of the data center enters an electricity storage and cold accumulation mode; when the electricity price is changed from a valley value to a peak value or a flat value, the intelligent online electricity storage and cold accumulation system of the data center is also switched from an electricity storage and cold accumulation mode to a discharge and cold accumulation mode, and the electricity stored in the valley value electricity price is utilized to supply power to the refrigerating device 10 in the peak value electricity price; when the refrigerating energy efficiency is from high to low, the intelligent online electric storage and cold accumulation system of the data center is switched from a discharging cold accumulation mode to a discharging cold accumulation mode, so that the operation time of the intelligent online electric storage and cold accumulation system of the data center when the refrigerating energy efficiency is high can be prolonged, the refrigerating energy efficiency of the air conditioner is higher, and the operation is more stable, thereby realizing energy conservation and carbon reduction.
In one embodiment, in order to detect whether the temperature t1 of the low-temperature water output by the water outlet end of the refrigeration device 10 is greater than the third threshold value, and further determine that the low-temperature water output by the water outlet end of the refrigeration device 10 is not acceptable, referring to fig. 1, a first temperature sensor 16 is disposed on a side of the first pipeline 13 near the water outlet end of the refrigeration device 10, where the first temperature sensor 16 is used to detect the temperature t1 of the low-temperature water output by the water outlet end of the refrigeration device 10. Wherein the first temperature sensor 16 can be located at any position of the first conduit 13 between the first water storage valve 12 and the water outlet end of the refrigeration device 10.
In order to prevent the low-temperature water output from the water outlet end of the refrigerating device 10 from failing (the low-temperature water temperature t1 is higher than 12 ℃) and not flowing to the cold storage tank 11, referring to fig. 1, a first pipeline 13 is arranged between the water outlet end of the refrigerating device 10 and the water inlet end of the cold storage tank 11, and a first water storage valve 12 is arranged on one side of the first pipeline 13 near the water inlet end of the cold storage tank 11, wherein the first water storage valve 12 is used for inputting the low-temperature water manufactured by the refrigerating device 10 into the cold storage tank 11.
Thus, when the temperature t1 of the low-temperature water output by the water outlet end of the refrigerating device 10 is higher than 12 ℃, the low-temperature water output by the water outlet end of the refrigerating device 10 is unqualified high-temperature water, and the control center closes the first water storage valve 12 to prevent the unqualified high-temperature water from flowing to the cold storage tank 11.
Meanwhile, in order to make the unqualified high-temperature water flow back to the refrigerating device 10 to reproduce the qualified low-temperature water, referring to fig. 1, a second pipe 15 is disposed between the water outlet end of the refrigerating device 10 and the water inlet end of the refrigerating device 10, and a water return valve 14 is disposed on the second pipe 15, where the water return valve 14 is used to make the unqualified low-temperature water produced by the refrigerating device 10 flow back to the refrigerating device 10.
Thus, the control center closes the first water storage valve 12 and simultaneously opens the water return valve 14, so that the unqualified low-temperature water flows back to the refrigerating device 10 again through the second pipeline 15 to reproduce the qualified low-temperature water.
In other embodiments, referring to fig. 2, the first pipe 13 is provided with a first water storage valve 12 and a second water storage valve 25, where the first water storage valve 12 is disposed on one side of the first pipe 13 near the cold storage tank 11, the second water storage valve 25 is disposed on the other side of the first pipe 13 near the refrigeration device 10, and the first pipe 13 between the first water storage valve 12 and the second water storage valve 25 is sequentially communicated with the second pipe 15 and the third pipe 18, so that unqualified high-temperature water output by the water outlet end of the refrigeration device 10 can be better prevented from flowing to the cold storage tank 11.
In one embodiment, when the intelligent online electricity storage and cold accumulation system of the data center starts to be powered on and started, low-temperature water is conveyed to the system tail end 60 to realize refrigeration, and referring to fig. 1, a third pipeline 18 is arranged between the water outlet end of the refrigeration device 10 and the water inlet end of the system tail end 60, a water supply valve 17 is arranged on the third pipeline 18, and the water supply valve 17 is used for inputting the low-temperature water manufactured by the refrigeration device 10 into the system tail end 60.
Thus, when the low-temperature water produced by the cooling device 10 needs to directly flow to the system end 60, the control center opens the water supply valve 17, so that the low-temperature water produced by the cooling device 10 directly flows to the system end 60 through the third pipe 18 to perform cooling.
In one embodiment, in order to enable the low-temperature water stored in the cold storage tank 11 to flow to the system end 60 according to the requirement, referring to fig. 1, a fourth pipeline 20 is disposed between the water outlet end of the cold storage tank 11 and the water inlet end of the system end 60, and a water drain valve 19 is disposed on the fourth pipeline 20, where the water drain valve 19 is used to input the low-temperature water stored in the cold storage tank 11 into the system end 60. Thus, when the intelligent online electricity storage and cold accumulation system of the data center needs the low-temperature water stored in the cold accumulation tank 11 to flow to the system tail end 60 for refrigeration, the control center opens the water drain valve 19 to enable the low-temperature water stored in the cold accumulation tank 11 to flow to the system tail end 60 for refrigeration.
In one embodiment, referring to fig. 1, a liquid level sensor 21 and a second temperature sensor 22 are disposed in the cold storage tank 11; the liquid level sensor 21 is used for detecting the liquid level of the low-temperature water stored in the cold storage tank 11; the second temperature sensor 22 is used to detect the temperature of the low-temperature water stored in the cold storage tank 11.
Thus, the intelligent online electricity storage and cold accumulation system of the data center can correspondingly detect the liquid level h1 and the temperature t2 of the low-temperature water stored in the cold accumulation tank 11 according to the liquid level sensor 21 and the second temperature sensor 22 and upload the liquid level h1 and the temperature t2 to the control center, and then the control center decides to flow in or stop flowing in the cold accumulation tank 11 and flow out or stop flowing out the low-temperature water stored in the cold accumulation tank 11 according to actual conditions.
In one embodiment, after the low-temperature water flowing to the system end 60 is cooled, high-temperature water or high-temperature water is formed, so that the high-temperature water or the high-temperature water can flow back to the cooling device 10 again to realize a refrigeration cycle, referring to fig. 1, a fifth pipeline 24 is arranged between the water inlet end of the cooling device 10 and the water outlet end of the system end 60, and a water pumping device 23 is arranged on the fifth pipeline 24, and the water pumping device 23 is used for conveying the water cooled by the system end 60 back to the cooling device 10.
Thus, the pumping device 23 will pump the said or the said warm water at the end 60 of the system back to the refrigeration device 10 through the fifth pipe 24 to reproduce the low temperature water, and the pumping device 23 is preferably a water pump.
The invention provides an air conditioner, which comprises the intelligent online electricity storage and cold accumulation system of the data center.
The invention provides a control method of an air conditioner, which is described above, referring to fig. 3, and includes the following steps:
detecting the lighting total radiation quantity of the photovoltaic device 30 when the air conditioner is electrified and started, and judging whether the lighting total radiation quantity is in a first preset interval or not; the first preset interval is more than or equal to 2.88kWh/m2.
When the judgment is yes, the air conditioner is powered by the photovoltaic device 30, and when the operation of the air conditioner is stable, the air conditioner is switched to the electricity storage and cold accumulation mode. Wherein, store up electric cold accumulation mode and be:
Part of the current flows to the energy storage battery 50 to store electricity, and part of the low-temperature water manufactured by the refrigerating device 10 flows to the cold storage tank 11 to store electricity.
When the judgment is no, the air conditioner adopts the mains supply device 40 to supply power, adjusts the running state of the air conditioner according to the mains supply price, and detects whether the current mains supply price is in a valley value or not:
if so, when the operation of the air conditioner is stable, switching to an electricity storage and cold accumulation mode.
If not, the running state of the air conditioner is regulated according to the refrigerating energy efficiency of the air conditioner, and whether the refrigerating energy efficiency of the air conditioner is in a second preset interval is judged; the second preset interval is greater than or equal to 4.
When the air conditioner is in the stable operation state, the air conditioner is switched to a discharge cold accumulation mode. Wherein, the cold accumulation mode of discharging is:
the energy storage battery 50 supplies power to the refrigerating device 10, and the low-temperature water produced by the refrigerating device 10 flows into the cold storage tank 11 to be stored.
And when the air conditioner is in a stable operation state, switching to a discharging and cooling mode. Wherein, discharge cooling mode is:
the energy storage battery 50 supplies power to the refrigerating device 10, and the low-temperature water stored in the cold storage tank 11 flows to the system end 60.
Wherein, the system stably operates as:
the low-temperature water manufactured by the refrigerating device 10 directly flows to the system tail end 60, so that the system tail end 60 can normally refrigerate the data center machine room, and the data center machine room can dissipate heat.
When the air conditioner is in the electricity storage and cold accumulation mode, the control method further comprises the following steps:
detecting a level h1 of the low-temperature water stored in the cold storage tank 11 by a level sensor 21;
judging whether the liquid level h1 reaches a first threshold value (the first threshold value is preferably 95%);
if (h 1 is not less than 95%), the low-temperature water produced by the control refrigeration device 10 is not flowed to the cold storage tank 11, but is directly flowed to the system terminal 60 to perform refrigeration.
If not (h 1 < 95%), the low-temperature water produced by the refrigerating apparatus 10 is controlled to continue to flow to the cold storage tank 11.
Wherein, when the air conditioner is in the discharging cooling mode, the control method further comprises:
detecting a temperature t2 of the low-temperature water stored in the cold storage tank 11 by a second temperature sensor 22;
determining whether the temperature t2 reaches a second threshold (the second threshold is preferably 12 ℃);
if (t 2 > 12 ℃), the low-temperature water produced by the control refrigeration device 10 directly flows to the system end 60, and the low-temperature water stored in the cold storage tank 11 no longer flows to the system end 60.
If not (t 2 is not more than 12 ℃), the low-temperature water produced by the refrigerating device 10 is controlled to directly flow to the cold storage tank 11, and the low-temperature water stored in the cold storage tank 11 continues to flow to the system end 60.
Referring to fig. 3, the control method of the air conditioner of the present invention is specifically as follows:
when the air conditioner is electrified and started, the control center can control the total lighting radiation quantity of the photovoltaic device 30 to be more than or equal to 2.88kWh/m 2 Whether the intelligent online electricity storage and cold accumulation system of the data center is powered and operated through the photovoltaic device 30 or the commercial power device 40 is judged.
1. When the control center judges that the lighting total radiation quantity of the photovoltaic device 30 is more than or equal to 2.88kWh/m 2 When the intelligent online electricity storage and cold accumulation system of the data center preferentially adopts the photovoltaic device 30 to generate electricity, the commercial power device 40 is not adopted to supply electricity, at the moment, the electric quantity generated by the photovoltaic device 30 only provides low-temperature water for manufacturing by the refrigerating device 10, then the control center can open the water supply valve 17, close the first water storage valve 12, the water return valve 14 and the water drain valve 19, the low-temperature water manufactured by the refrigerating device 10 directly flows to the system tail end 60 through the third pipeline 18, the system tail end 60 is used for normally refrigerating a data center machine room, then the control center judges that the intelligent online electricity storage and cold accumulation system of the data center stably operates, and then the control center enables the intelligent online electricity storage and cold accumulation system of the data center to enter an electricity storage and cold accumulation mode:
(1) at this time, the electric power generated by the photovoltaic device 30 provides the refrigeration device 10 to manufacture low-temperature water, and at the same time, part of the electric power flows to the energy storage battery 50 to store electricity.
(2) At this time, the control center keeps the water supply valve 17 open, closes the water return valve 14 and the water drain valve 19, and opens the first water storage valve 12, so that the low-temperature water produced by the refrigerating device 10 flows to the system end 60 for refrigeration, and at the same time, part of the low-temperature water flows to the cold storage tank 11 through the first pipe 13 for storage. And when the liquid level sensor 21 detects that the liquid level h1 of the low-temperature water stored in the cold storage tank 11 is more than or equal to 95% and is uploaded to the control center, the control center closes the first water storage valve 12, so that the low-temperature water manufactured by the refrigeration device 10 does not flow to the cold storage tank 11 through the first pipeline 13.
2. When the total amount of lighting radiation of the photovoltaic device 30 is less than 2.88kWh/m 2 During the time, the intelligent online electricity storage of data center holdsThe cooling system is powered by the commercial power device 40 preferentially, and does not use the photovoltaic device 30 to generate power, so that the intelligent online power storage and cold accumulation system of the data center also needs to judge whether the current electricity price is in a valley value.
(1) If the electricity price is at the valley value, at this time, no matter the COP of the refrigeration energy efficiency, the electric quantity of the commercial power device 40 only provides the refrigeration device 10 to manufacture low-temperature water, then the control center can open the water supply valve 17, close the first water storage valve 12, the water return valve 14 and the water drain valve 19, so that the low-temperature water manufactured by the refrigeration device 10 directly flows to the system tail end 60 through the third pipeline 18, the system tail end 60 normally refrigerates to the data center machine room, then the control center judges that the intelligent online electricity storage and cold storage system of the data center stably operates, and then the control center enables the intelligent online electricity storage and cold storage system of the data center to enter an electricity storage and cold storage mode:
(1) At this time, when the electric quantity of the utility power device 40 provides the low-temperature water for manufacturing by the refrigeration device 10, a part of the electric quantity flows to the energy storage battery 50 to store electricity, and when the electric quantity E of the energy storage battery 50 is more than or equal to 95%, the electric quantity of the utility power device 40 does not flow to the energy storage battery 50 to store electricity, and the electric quantity of the utility power device 40 is only used for manufacturing the low-temperature water by the refrigeration device 10.
(2) At this time, the control center keeps the water supply valve 17 in an opened state, if the first temperature sensor 16 detects that the temperature t1 of the low-temperature water output by the water outlet end of the refrigerating device 10 is more than 12 ℃ and uploads the low-temperature water to the control center, the control center judges that the low-temperature water output by the water outlet end of the refrigerating device 10 is unqualified high-temperature water, at this time, the control center closes the first water storage valve 12 and opens the water return valve 14, so that the unqualified high-temperature water flows back to the refrigerating device 10 through the second pipeline 15 to reproduce the qualified low-temperature water; when the first temperature sensor 16 detects that the temperature t1 of the low-temperature water output by the water outlet end of the refrigerating device 10 is less than or equal to 12 ℃ and the low-temperature water is uploaded to the control center, the control center can judge that the low-temperature water output by the water outlet end of the refrigerating device 10 is qualified low-temperature water, at the moment, the control center can open the first water storage valve 12 and close the water return valve 14 and the water drain valve 19, so that the low-temperature water manufactured by the refrigerating device 10 flows to the tail end 60 of the system for refrigerating, and meanwhile, part of low-temperature water flows to the cold storage tank 11 through the first pipeline 13 for storage. And when the liquid level sensor 21 detects that the liquid level h1 of the low-temperature water stored in the cold storage tank 11 is more than or equal to 95% and is uploaded to the control center, the control center closes the first water storage valve 12, so that the low-temperature water manufactured by the refrigeration device 10 does not flow to the cold storage tank 11 through the first pipeline 13.
(2) If the electricity price is not in the valley value, namely the electricity price is in the peak value or the flat value, the intelligent online electricity storage and cold accumulation system of the data center needs to judge the current refrigeration energy efficiency, wherein the refrigeration energy efficiency cop=the refrigeration capacity/electricity consumption, the refrigeration energy efficiency COP of the data center machine room of each city is different, but when the refrigeration energy efficiency COP of most cities is less than 4, the intelligent online electricity storage and cold accumulation system of the data center can judge that the refrigeration energy efficiency is low; and otherwise, if the COP of the refrigeration energy efficiency is more than or equal to 4, judging that the refrigeration energy efficiency is high.
When the electricity price is not in the valley value, and the refrigerating energy efficiency of the intelligent online electricity storage and cold accumulation system of the data center is high, namely the COP is more than or equal to 4, the electric quantity of the commercial power device 40 is only used for manufacturing low-temperature water by the refrigerating device 10, then the control center opens the water supply valve 17, closes the first water storage valve 12, the water return valve 14 and the water drain valve 19, so that the low-temperature water manufactured by the refrigerating device 10 directly flows to the system tail end 60 through the third pipeline 18, the system tail end 60 normally refrigerates the machine room of the data center, then the control center judges that the intelligent online electricity storage and cold accumulation system of the data center stably operates, and then the control center enables the intelligent online electricity storage and cold accumulation system of the data center to enter a discharging cold accumulation mode:
(1) at this time, the intelligent online electric storage and cold accumulation system of the data center does not use the commercial power device 40 to supply power, but the energy storage battery 50 is in a discharging state, i.e. the energy storage battery 50 supplies power to the refrigeration device 10 and enables the refrigeration device to operate. Once the electric quantity E of the energy storage battery 50 is less than or equal to 5%, the intelligent online electric storage and cold accumulation system of the data center is switched to the commercial power device 40 again to supply power, and the electric energy is not stored to the energy storage battery 50 at the moment, but is stored to the energy storage battery 50 when the electricity price is equal to the valley value.
(2) At this time, the low-temperature water produced by the refrigerating apparatus 10 flows to the system end 60 for refrigerating, and at the same time, a part of the low-temperature water flows to the cold storage tank 11 for storage, and the cold storage method of the cold storage tank 11 in the electricity storage cold storage mode is specifically referred to.
When the electricity price is not in the valley value and the refrigerating energy efficiency of the intelligent online electricity storage and cold accumulation system of the data center is low, namely the COP is smaller than 4, the electric quantity of the commercial power device 40 is only used for manufacturing low-temperature water by the refrigerating device 10, then the control center can open the water supply valve 17, close the first water storage valve 12, the water return valve 14 and the water drain valve 19, the low-temperature water manufactured by the refrigerating device 10 directly flows to the system tail end 60 through the third pipeline 18, the system tail end 60 normally refrigerates the machine room of the data center, then the control center judges that the intelligent online electricity storage and cold accumulation system of the data center stably operates, and then the intelligent online electricity storage and cold accumulation system of the data center enters a discharging and cold accumulation mode:
(1) at this time, the intelligent online electric storage and cold accumulation system of the data center does not use the commercial power device 40 to supply power, but the energy storage battery 50 is in a discharging state, i.e. the energy storage battery 50 supplies power to the refrigeration device 10 and enables the refrigeration device to operate. Once the electric quantity E of the energy storage battery 50 is less than or equal to 5%, the intelligent online electric storage and cold accumulation system of the data center is switched to the commercial power device 40 again to supply power, and the electric energy is not stored to the energy storage battery 50 at the moment, but is stored to the energy storage battery 50 when the electricity price is equal to the valley value.
(2) At this time, the control center opens the first water storage valve 12 and the water drain valve 19, closes the water return valve 14 and the water supply valve 17, and the low-temperature water produced by the refrigerating apparatus 10 is not directly cooled to the system end 60 but flows to the cold storage tank 11, and then the low-temperature water stored in the cold storage tank 11 flows to the system end 60 again to cool. When the second temperature sensor 22 detects that the temperature t2 of the low-temperature water stored in the cold storage tank 11 is higher than 12 ℃ and the low-temperature water is uploaded to the control center, the control center closes the first water storage valve 12, the water return valve 14 and the water drain valve 19, opens the water supply valve 17, stops the flow of the low-temperature water stored in the cold storage tank 11 to the system end 60 for cooling, and switches the low-temperature water manufactured by the refrigerating device 10 to the system end 60 for cooling.
Naturally, after the system end 60 cools, the low-temperature water absorbs heat to form high-temperature water or high-temperature water, and then the pumping device 23 pumps the high-temperature water or the low-temperature water in the system end 60 back to the refrigerating device 10 through the fifth pipeline 24 to reproduce the qualified low-temperature water, so as to form a refrigerating cycle.
Thus, when the total lighting radiation of the photovoltaic device 30 is more than or equal to 2.88kWh/m 2 When the intelligent online electricity storage and cold accumulation system of the data center adopts the photovoltaic device 30 to generate electricity and enter an electricity storage and cold accumulation mode; when the total amount of lighting radiation of the photovoltaic device 30 is less than 2.88kWh/m 2 When the electricity price is in the valley value, the intelligent online electricity storage and cold accumulation system of the data center enters an electricity storage and cold accumulation mode; when the electricity price is changed from a valley value to a peak value, the intelligent online electricity storage and cold accumulation system of the data center is switched from an electricity storage and cold accumulation mode to a discharge and cold accumulation mode; when the refrigerating energy efficiency is changed from high to low, the intelligent online electric storage and cold accumulation system of the data center is switched from a discharging and cold accumulation mode to a discharging and cold discharging mode, so that electricity stored in the energy storage battery 50 is utilized when the electricity price is in a valley value, and the energy storage battery 50 supplies power to the refrigerating device 10 when the electricity price is in a peak value, so that the operation duration of the intelligent online electric storage and cold accumulation system of the data center when the refrigerating energy efficiency is high can be prolonged; the intelligent online electricity storage and cold accumulation system of the whole data center can control the opening and closing of the first water storage valve 12, the water return valve 14, the water supply valve 17 and the water drain valve 19 according to signals fed back by the first temperature sensor 16, the liquid level sensor 21 and the second temperature sensor 22 so as to change the flow path of low-temperature water, and then the intelligent online electricity storage and cold accumulation system of the data center can switch four modes back and forth online according to peak-valley electricity prices, so that the refrigerating energy efficiency of the whole air conditioner is higher, the operation is more stable, and the energy conservation and the carbon reduction are realized; and the intelligent online electric storage and cold accumulation system of the data center can not stop running in the process of switching the corresponding modes, so that the tail end 60 of the system can continuously refrigerate the data center machine room for 24 hours, and the heat dissipation of the data center machine room is quickened.
It is apparent that the above-described embodiments are only some embodiments of the present invention, but not all embodiments, and the preferred embodiments of the present invention are shown in the drawings, which do not limit the scope of the patent claims. This invention may be embodied in many different forms, but rather, embodiments are provided in order to provide a thorough and complete understanding of the present disclosure. Although the invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing description, or equivalents may be substituted for elements thereof. All equivalent structures made by the content of the specification and the drawings of the invention are directly or indirectly applied to other related technical fields, and are also within the scope of the invention.
Claims (15)
1. An intelligent online electricity storage and cold accumulation system of a data center, which is characterized by comprising:
a refrigerating device (10) for producing low-temperature water, and having a photovoltaic device (30) or a mains device (40) for double-supplying the refrigerating device (10);
the energy storage battery (50) is used for being connected with the refrigerating device (10), and the photovoltaic device (30) or the commercial power device (40) stores electricity for the energy storage battery (50);
A cold storage tank (11) for storing low-temperature water outputted from the refrigerating device (10);
and a system end (60) for refrigerating the low-temperature water stored in the cold storage tank (11) or the low-temperature water manufactured by the refrigerating device (10) and returning the refrigerated water to the refrigerating device (10).
2. The intelligent online electricity storage and cold storage system of the data center according to claim 1, wherein a first pipeline (13) is arranged between a water outlet end of the refrigerating device (10) and a water inlet end of the cold storage tank (11), a first water storage valve (12) is arranged on one side, close to the water inlet end of the cold storage tank (11), of the first pipeline (13), and the first water storage valve (12) is used for enabling low-temperature water manufactured by the refrigerating device (10) to be input into the cold storage tank (11).
3. The intelligent online electric storage and cold accumulation system of the data center according to claim 1, wherein a second pipeline (15) is arranged between the water outlet end of the refrigerating device (10) and the water inlet end of the refrigerating device (10), a water return valve (14) is arranged on the second pipeline (15), and the water return valve (14) is used for enabling unqualified low-temperature water manufactured by the refrigerating device (10) to flow back to the refrigerating device (10).
4. The intelligent online electric storage and cold accumulation system of the data center according to claim 2, wherein a first temperature sensor (16) is arranged on one side of the first pipeline (13) close to the water outlet end of the refrigerating device (10), and the first temperature sensor (16) is used for detecting the temperature of low-temperature water output by the water outlet end of the refrigerating device (10).
5. The intelligent online electric storage and cold accumulation system of the data center according to claim 1, characterized in that a third pipeline (18) is arranged between the water outlet end of the refrigerating device (10) and the water inlet end of the system tail end (60), a water supply valve (17) is arranged on the third pipeline (18), and the water supply valve (17) is used for inputting low-temperature water manufactured by the refrigerating device (10) into the system tail end (60).
6. The intelligent online electricity storage and cold accumulation system of the data center according to claim 1, wherein a fourth pipeline (20) is arranged between a water outlet end of the cold accumulation tank (11) and a water inlet end of the system tail end (60), a water drain valve (19) is arranged on the fourth pipeline (20), and the water drain valve (19) is used for inputting low-temperature water stored in the cold accumulation tank (11) into the system tail end (60).
7. The intelligent online electricity storage and cold accumulation system of the data center according to claim 1, wherein a liquid level sensor (21) and a second temperature sensor (22) are arranged in the cold accumulation tank (11);
the liquid level sensor (21) is used for detecting the liquid level of the low-temperature water stored in the cold accumulation tank (11);
the second temperature sensor (22) is used for detecting the temperature of the low-temperature water stored in the cold storage tank (11).
8. The intelligent online electric storage and cold accumulation system of the data center according to claim 1, wherein a fifth pipeline (24) is arranged between a water inlet end of the refrigerating device (10) and a water outlet end of the system tail end (60), a water pumping device (23) is arranged on the fifth pipeline (24), and the water pumping device (23) is used for conveying water cooled by the system tail end (60) back to the refrigerating device (10).
9. An air conditioner, characterized by comprising the intelligent online electricity storage and cold accumulation system of the data center of any one of claims 1-8.
10. The control method of an air conditioner as set forth in claim 9, comprising the steps of:
detecting lighting total radiation quantity of a photovoltaic device (30) when the air conditioner is electrified and started, and judging whether the lighting total radiation quantity is in a first preset interval or not;
when the air conditioner is judged to be powered on by a photovoltaic device (30), and when the operation of the air conditioner is stable, the air conditioner is switched to an electricity storage and cold accumulation mode;
and when the air conditioner is judged to be not powered by the mains supply device (40), and the running state of the air conditioner is regulated according to the price of the mains supply.
11. The control method according to claim 10, wherein adjusting the operation state of the air conditioner according to the utility power price comprises:
Detecting whether the current commercial power price is in a valley value or not;
if so, switching to an electricity storage and cold accumulation mode when the operation of the air conditioner is stable;
if not, the running state of the air conditioner is regulated according to the refrigerating energy efficiency of the air conditioner.
12. The control method according to claim 11, wherein adjusting the operation state of the air conditioner according to the cooling energy efficiency of the air conditioner comprises:
judging whether the refrigeration energy efficiency of the air conditioner is in a second preset interval or not;
when the judgment is yes, switching to a discharge cold accumulation mode when the operation of the air conditioner is stable;
and when the air conditioner is in a stable operation state, switching to a discharging and cooling mode.
13. The control method of claim 12, wherein the electricity storage and cold storage mode is:
part of the current flows to the energy storage battery (50) to store electricity, and part of low-temperature water manufactured by the refrigerating device (10) flows into the cold storage tank (11) to store electricity;
the discharging cold accumulation mode is as follows:
the energy storage battery (50) supplies power to the refrigerating device (10), and low-temperature water manufactured by the refrigerating device (10) flows into the cold storage tank (11) for storage;
the discharging and cooling mode is as follows:
the energy storage battery (50) supplies power to the refrigerating device (10), and low-temperature water stored in the cold storage tank (11) flows to the tail end (60) of the system.
14. Control method according to any one of claims 10-13, characterized in that,
when the air conditioner is in the electricity storage and cold accumulation mode, the control method further comprises the following steps:
detecting the liquid level of the low-temperature water stored in the cold storage tank (11);
judging whether the liquid level reaches a first threshold value;
if so, the low-temperature water produced by the refrigerating device (10) is controlled not to flow to the cold storage tank (11).
15. The control method according to claim 12 or 13, characterized in that,
when the air conditioner is in the discharging and cooling mode, the control method further comprises the following steps:
detecting the temperature of the low-temperature water stored in the cold storage tank (11);
judging whether the temperature reaches a second threshold value;
if so, the low-temperature water produced by the refrigeration device (10) is controlled to flow directly to the system end (60).
Priority Applications (1)
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