CN110671765A - Phase-change cold accumulation emergency cold supply system - Google Patents
Phase-change cold accumulation emergency cold supply system Download PDFInfo
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- CN110671765A CN110671765A CN201910897823.1A CN201910897823A CN110671765A CN 110671765 A CN110671765 A CN 110671765A CN 201910897823 A CN201910897823 A CN 201910897823A CN 110671765 A CN110671765 A CN 110671765A
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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
- F24F5/0021—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 using phase change material [PCM] for storage
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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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/30—Arrangement or mounting of heat-exchangers
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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)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a phase-change cold accumulation emergency cold supply system, which comprises an air-conditioning refrigeration host, a main water pump, an air-conditioning tail end, a plate heat exchanger, a PCM cold accumulation pool, an auxiliary water pump, a main pipeline and an electric valve, wherein the air-conditioning refrigeration host is operated to refrigerate and accumulate energy and store cold energy at night with very low power load, namely at the valley period of power utilization; in the daytime with higher power load, namely the peak period of electricity utilization, the stored cold energy is released, so that the requirement of air conditioning load of the building is met, and the peak shifting and valley filling of the power load are realized; under the cooperation of the PCM cold storage pool, the air-conditioning refrigeration main machine runs at night, and the average cooling temperature is 32 ℃; the same cold quantity is produced, the electric energy consumed by the air-conditioning refrigerator can be reduced by 3% and the energy consumption can be reduced by about 15% when the cooling temperature is reduced by 1 ℃; the air-conditioning refrigeration main machine can run for a long time at a high-efficiency point, so that the energy is saved by more than 20% compared with the common system.
Description
Technical Field
The invention belongs to the technical field of cold supply systems, and particularly relates to a phase change cold accumulation emergency cold supply system.
Background
Along with the rapid development of economy in China, the increase of power demand is very rapid, especially, the difference between the peak and the valley of power utilization is continuously enlarged in one day, the uneven condition of power grid operation is more and more serious, power generation and transmission equipment is seriously overloaded during peak power utilization, a power department only can switch off to limit the power for ensuring the operation safety of the power grid, the use of users is influenced, and huge investment is also needed to establish a power station to meet the requirement of power supply; when electricity is used in a valley, the production capacity of power generation and transmission equipment is greatly and seriously excessive and wasted, so that the running efficiency of a power grid is low, and the cost is increased; the power distribution in China is very uneven, the power in some areas is sufficient, the power in some areas is poor, the power in the big city and the industrial area is insufficient in the daytime, and the power in the evening is excessive; as long as the point force energy is fully and reasonably utilized, the country benefits, the user also benefits, and the power utilization rate is higher.
In the 70 s of the 20 th century, the world-wide energy crisis is taken as a trigger, advanced cold accumulation technologies are introduced in developed countries successively as a means for electric power peak regulation, energy is still in a tense period at the present stage, and especially the electricity consumption of an urban air conditioner is basically in a peak period of electric power load, so that the air conditioner cold accumulation technology is regarded as an important field for application of the cold accumulation technology.
Therefore, it is necessary to invent a phase change cold accumulation emergency cooling system.
Disclosure of Invention
In order to solve the technical problems, the invention provides a phase change cold accumulation emergency cold supply system, which can realize a mode of simultaneous accumulation and supply by adopting four modes of direct system supply, independent cold accumulation, independent cold release, combined cold release and the like, does not influence the operation of a central air conditioning system while accumulating cold, does not need to additionally purchase an ice making host machine because a PCM phase change cold accumulation material is frozen at positive temperature, and reduces the early investment so as to solve the problems. A phase-change cold accumulation emergency cold supply system comprises a plurality of air-conditioning refrigeration hosts, a main water pump, an air-conditioning tail end, a plate heat exchanger, a PCM cold accumulation pool, an auxiliary water pump, a main pipeline and an electric valve, wherein the air-conditioning refrigeration hosts are respectively connected with the main water pump, the plate heat exchanger and the main pipeline through pipelines; the main water pump is respectively connected with a water outlet at the tail end of the air conditioner and the plate heat exchanger through pipelines; 2 PCM cold storage tanks are arranged and are respectively connected with the plate heat exchanger and the auxiliary water pump through pipelines; the number of the auxiliary water pumps is 2; the main pipeline is arranged at a water inlet at the tail end of the air conditioner.
The electric valve adopts a plurality of electric valves which are respectively as follows: v01, V02, V03, V04, V05, V06 and V07; the air conditioner terminal refers to an indoor refrigerating unit, such as a fan coil and an air cabinet; the air-conditioning refrigeration host is specifically 150RT type.
The phase change cold accumulation emergency cold supply system comprises four operation modes during operation, wherein the four operation modes are respectively as follows: direct supply mode, pure cold storage mode, single cold discharge mode and combined cold discharge mode.
The direct supply mode comprises the following steps: when the air conditioner runs, the electric valve V01 is opened, the V02, the V03, the V04 and the V05 are closed, the air conditioner refrigeration host is started, the temperature of outlet water is adjusted to 7 ℃, ice water at 7 ℃ enters the main pipeline through the V01 and then enters the tail end of the air conditioner, and the ice water at 13 ℃ flowing out from the tail end of the air conditioner flows back to the air conditioner refrigeration host.
The pure cold storage mode is as follows: starting the air-conditioning refrigeration host machine, closing the electric valves V01, V02 and V04, opening the electric valves V03 and V05, adjusting the temperature of the outlet water of the air-conditioning refrigeration host machine to 5 ℃, discharging the outlet water, enabling the 5 ℃ ice water to firstly enter the plate heat exchanger, exchanging heat with the other side, increasing the temperature to 8 ℃, and then sending the 8 ℃ cold water to the main pipeline and conveying the cold water to the tail end of an air conditioner for use; and after the temperature of cold water on the other side of the plate heat exchanger is reduced to 5 ℃, the cold water enters the PCM cold storage pool and exchanges heat with the phase change cold storage module in the PCM cold storage pool, the internal material of the cold storage module undergoes phase change to convert cold energy into latent heat for storage, and at the moment, the temperature of ice water rises to 8 ℃ and flows back to the plate heat exchanger to form circulation.
The single cooling mode: the air-conditioning refrigeration main machine stops running completely, the electric valves V01, V03 and V05 are closed, the electric valves V02 and V04 are opened, the return water at the tail end of the air conditioner at 12 ℃ flows through the electric valves V04 and enters the primary side of the plate heat exchanger, the temperature is reduced to 8 ℃ after heat exchange with the other side, the return water flows through the electric valves V02 and then is sent to the main pipeline, and the return water is conveyed to the tail end of the air conditioner for use.
The combined cooling mode comprises the following steps: when the air conditioner refrigeration system is used in the daytime, the air conditioner refrigeration host is preferentially operated, after the water return degree continuously exceeds 12.5 ℃, the combined cooling mode is started, at the moment, the electric valves V03 and V05 are closed, the electric valves V01, V02 and V04 are opened, and the water return is divided into two paths: the return water at 12.5 ℃ enters the air-conditioning refrigeration main machine, is refrigerated, and the outlet water at 7 ℃ flows through V01 and enters the main pipeline; the return water at 12.5 ℃ flows through the V04 valve, enters the PCM cold storage pool, is changed into ice water at 8 ℃ after absorbing the latent heat known by the cold storage module, and flows through the V02 to enter the main pipeline.
Compared with the prior art, the invention has the following beneficial effects:
1. in the invention, at night when the power load is very low, namely in the valley period of power utilization, the air-conditioning main machine is operated to refrigerate and store energy, and the cold energy is stored; in the daytime with higher power load, namely the peak period of electricity utilization, the stored cold energy is released, so that the requirement of air conditioning load of a building is met, the peak shifting and valley filling of the electricity utilization load are realized, in popular terms, the electricity price of 0.1-0.3 yuan at night is utilized to do 1 more money in the daytime, and the energy operation cost of users of the central air conditioner is saved to the maximum extent.
2. According to the invention, the air-conditioning refrigeration main machine runs in summer and daytime under the working condition of a common air conditioner, the average cooling temperature is 37 ℃, the air-conditioning refrigeration main machine runs at night under the cooperation of the PCM cold storage pool, and the average cooling temperature is 32 ℃; the same cold quantity is produced, the electric energy consumed by the air-conditioning refrigerator can be reduced by 3% and the energy consumption can be reduced by about 15% when the cooling temperature is reduced by 1 ℃.
3. In the invention, in the daytime, the relation between the cold load and the sun sunshine is large, and the change of the cold load is large along with the change of time, so that the main machine runs at different efficiency points, the time is few at the actual high efficiency point, the air-conditioning refrigeration main machine runs at night, the load change is not large, the air-conditioning refrigeration main machine can run at the high efficiency point for a long time, and the energy is saved by more than 20 percent compared with the common system.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic diagram of the system of the present invention.
FIG. 3 is a schematic diagram of the direct mode of the present invention.
Fig. 4 is a schematic view of the pure cold storage mode of the present invention.
Fig. 5 is a schematic view of the cold storage only mode of the present invention.
Fig. 6 is a schematic view of the combined cold storage mode of the present invention.
In the figure:
1-air-conditioning refrigeration host, 2-main water pump, 3-air-conditioning tail end, 4-plate heat exchanger, 5-PCM cold storage pool, 6-auxiliary water pump, 7-main pipeline and 8-electric valve.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
as shown in figures 1 to 6
The invention provides a phase change cold accumulation emergency cold supply system, which comprises an air-conditioning refrigeration host 1, a main water pump 2, an air-conditioning tail end 3, a plate type heat exchanger 4, a PCM cold accumulation pool 5, an auxiliary water pump 6, a main pipeline 7 and an electric valve, wherein the air-conditioning refrigeration host 1 is provided with a plurality of air-conditioning refrigeration hosts, and is respectively connected with the main water pump 2, the plate type heat exchanger 4 and the main pipeline 7 through pipelines; the main water pump 2 is respectively connected with a water outlet of the air conditioner tail end 3 and the plate heat exchanger 4 through pipelines; 2 PCM cold storage tanks 5 are arranged and are respectively connected with the plate heat exchanger 4 and the auxiliary water pump 6 through pipelines; 2 auxiliary water pumps 6 are arranged; the main pipeline 7 is arranged at a water inlet of the air conditioner tail end 3.
The electric valve adopts a plurality of electric valves which are respectively as follows: v01, V02, V03, V04, V05, V06 and V07; the air conditioner terminal 3 refers to an indoor refrigerating unit, such as a fan coil and an air cabinet; the air-conditioning refrigeration host 1 is specifically of a 150RT type.
The phase change cold accumulation emergency cold supply system comprises four operation modes during operation, wherein the four operation modes are respectively as follows: direct supply mode, pure cold storage mode, single cold discharge mode and combined cold discharge mode.
The direct supply mode comprises the following steps: when the air conditioner is operated, the electric valve V01 is opened, the V02, the V03, the V04 and the V05 are closed, the air conditioner refrigeration host 1 is started, the temperature of outlet water is adjusted to 7 ℃, ice water at 7 ℃ enters the main pipeline 7 through the V01 and then enters the tail end 3 of the air conditioner, and the ice water at 13 ℃ flowing out from the tail end 3 of the air conditioner flows back to the air conditioner refrigeration host 1.
The pure cold storage mode is as follows: starting the air-conditioning refrigeration host 1, closing the electric valves V01, V02 and V04, opening the electric valves V03 and V05, adjusting the temperature of the outlet water of the air-conditioning refrigeration host 1 to 5 ℃, discharging the water, enabling the 5 ℃ ice water to enter the plate heat exchanger 4, exchanging heat with the other side, increasing the temperature to 8 ℃, sending the 8 ℃ cold water to the main pipeline 7, and conveying the cold water to the tail end 3 of the air conditioner for use; and after the temperature of cold water on the other side of the plate heat exchanger 4 is reduced to 5 ℃, the cold water enters the PCM cold storage pool 5 and exchanges heat with the phase change cold storage module in the PCM cold storage pool 5, the material in the cold storage module undergoes phase change to convert cold energy into latent heat for storage, and at the moment, the temperature of ice water rises to 8 ℃ and flows back to the plate heat exchanger 4 to form circulation.
The single cooling mode: the air-conditioning refrigeration main machine 1 stops running completely, the electric valves V01, V03 and V05 are closed, the electric valves V02 and V04 are opened, the return water at the tail end 3 of the air conditioner at the temperature of 12 ℃ flows through the V04 and enters the primary side of the plate heat exchanger 4, the temperature is reduced to 8 ℃ after heat exchange with the other side, the return water flows through the V02 and is sent to the main pipeline 7 and conveyed to the tail end 3 of the air conditioner for use.
The combined cooling mode comprises the following steps: when the air-conditioning refrigeration system is used in the daytime, the air-conditioning refrigeration host 1 is preferentially operated, after the water return degree continuously exceeds 12.5 ℃, the combined cooling mode starts to be started, at the moment, the electric valves V03 and V05 are closed, the electric valves V01, V02 and V04 are opened, and the water return is divided into two paths: the return water at 12.5 ℃ enters the air-conditioning refrigeration main machine 1, is refrigerated, and then flows out at 7 ℃ and enters the main pipeline 7 after flowing through V01; the return water at 12.5 ℃ flows through the V04 valve, enters the PCM cold storage pool 5, is changed into ice water at 8 ℃ after absorbing the latent heat known by the cold storage module, and flows through the V02 to enter the main pipeline 7.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.
Claims (7)
1. The utility model provides an emergent cooling system of phase transition cold-storage which characterized in that: the air-conditioning refrigeration system comprises a plurality of air-conditioning refrigeration hosts (1), a main water pump (2), an air-conditioning tail end (3), a plate type heat exchanger (4), a PCM cold storage pool (5), an auxiliary water pump (6), a main pipeline (7) and an electric valve, wherein the air-conditioning refrigeration hosts (1) are respectively connected with the main water pump (2), the plate type heat exchanger (4) and the main pipeline (7) through pipelines; the main water pump (2) is respectively connected with a water outlet of the air conditioner tail end (3) and the plate type heat exchanger (4) through pipelines; 2 PCM cold storage tanks (5) are arranged and are respectively connected with the plate heat exchanger (4) and the auxiliary water pump (6) through pipelines; the number of the auxiliary water pumps (6) is 2; the main pipeline (7) is arranged at the water inlet of the air conditioner tail end (3).
2. The phase change cold storage emergency cooling system of claim 1, wherein: the electric valve adopts a plurality of electric valves which are respectively as follows: v01, V02, V03, V04, V05, V06 and V07; the air conditioner terminal (3) refers to an indoor refrigerating unit, such as a fan coil and an air cabinet; the air-conditioning refrigeration host (1) is specifically 150RT type.
3. The phase change cold storage emergency cooling system of claim 1, wherein: the phase change cold accumulation emergency cold supply system comprises four operation modes during operation, wherein the four operation modes are respectively as follows: direct supply mode, pure cold storage mode, single cold discharge mode and combined cold discharge mode.
4. The phase change cold storage emergency cooling system of claim 3, wherein: the direct supply mode comprises the following steps: when the air conditioner is in operation, the electric valve V01 is opened, the V02, the V03, the V04 and the V05 are closed, the air conditioner refrigeration host (1) is started, the temperature of outlet water is adjusted to 7 ℃, ice water at 7 ℃ enters the main pipeline (7) through the V01 and then enters the air conditioner tail end (3), and the ice water at 13 ℃ flowing out of the air conditioner tail end (3) flows back to the air conditioner refrigeration host (1).
5. The phase change cold storage emergency cooling system of claim 3, wherein: the pure cold storage mode is as follows: starting the air-conditioning refrigeration host (1), closing electric valves V01, V02 and V04, opening V03 and V05, adjusting the temperature of water outlet of the air-conditioning refrigeration host (1) to 5 ℃, discharging the water, enabling 5 ℃ ice water to enter the plate heat exchanger (4) first, exchanging heat with the other side, enabling the temperature to rise to 8 ℃, sending 8 ℃ cold water to the main pipeline (7) again, and conveying the cold water to the tail end (3) of an air conditioner for use; and after the temperature of cold water on the other side of the plate heat exchanger (4) is reduced to 5 ℃, the cold water enters the PCM cold storage pool (5) and exchanges heat with the phase change cold storage module in the PCM cold storage pool (5), the material in the cold storage module undergoes phase change to convert cold energy into latent heat for storage, and at the moment, the temperature of ice water rises to 8 ℃, and the ice water flows back to the plate heat exchanger (4) to form circulation.
6. The phase change cold storage emergency cooling system of claim 3, wherein: the single cooling mode: the air-conditioning refrigeration main machine (1) stops running completely, the electric valves V01, V03 and V05 are closed, the V02 and the V04 are opened, the return water of the air-conditioning tail end (3) at the temperature of 12 ℃ flows through the V04 and enters the primary side of the plate heat exchanger (4), the temperature is reduced to 8 ℃ after heat exchange with the other side, and the return water flows through the V02 and is sent to the main pipeline (7) and is conveyed to the air-conditioning tail end (3) for use.
7. The phase change cold storage emergency cooling system of claim 3, wherein: the combined cooling mode comprises the following steps: when the air-conditioning refrigeration system is used in the daytime, the air-conditioning refrigeration host (1) is preferentially operated, after the return water temperature continuously exceeds 12.5 ℃, the combined cooling mode is started, at the moment, the electric valves V03 and V05 are closed, the electric valves V01, V02 and V04 are opened, and the return water is divided into two paths: the return water at 12.5 ℃ enters the air-conditioning refrigeration main machine (1), is refrigerated, and then flows out at 7 ℃ and enters the main pipeline (7) after flowing through V01; the return water at 12.5 ℃ flows through the V04 valve, enters the PCM cold storage tank (5), is changed into ice water at 8 ℃ after absorbing the latent heat known by the cold storage module, and flows through the V02 to enter the main pipeline (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910897823.1A CN110671765A (en) | 2019-09-23 | 2019-09-23 | Phase-change cold accumulation emergency cold supply system |
| TW109108536A TW202113281A (en) | 2019-09-23 | 2020-03-16 | Phase-change cold storage emergency cold supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910897823.1A CN110671765A (en) | 2019-09-23 | 2019-09-23 | Phase-change cold accumulation emergency cold supply system |
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| Publication Number | Publication Date |
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| CN110671765A true CN110671765A (en) | 2020-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910897823.1A Pending CN110671765A (en) | 2019-09-23 | 2019-09-23 | Phase-change cold accumulation emergency cold supply system |
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| Country | Link |
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| CN (1) | CN110671765A (en) |
| TW (1) | TW202113281A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165896A (en) * | 2021-11-23 | 2022-03-11 | 无锡多纬智控科技有限公司 | Central air-conditioning system electric power dynamic load peak regulation method |
| CN114413369A (en) * | 2022-03-28 | 2022-04-29 | 深圳市森若新材科技有限公司 | Cold storage air conditioning system based on nano microcapsule suspension phase change material and control method |
| CN114867299A (en) * | 2022-04-28 | 2022-08-05 | 东南大学 | Data machine room cold accumulation system and method capable of being used as emergency |
-
2019
- 2019-09-23 CN CN201910897823.1A patent/CN110671765A/en active Pending
-
2020
- 2020-03-16 TW TW109108536A patent/TW202113281A/en unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114165896A (en) * | 2021-11-23 | 2022-03-11 | 无锡多纬智控科技有限公司 | Central air-conditioning system electric power dynamic load peak regulation method |
| CN114413369A (en) * | 2022-03-28 | 2022-04-29 | 深圳市森若新材科技有限公司 | Cold storage air conditioning system based on nano microcapsule suspension phase change material and control method |
| CN114867299A (en) * | 2022-04-28 | 2022-08-05 | 东南大学 | Data machine room cold accumulation system and method capable of being used as emergency |
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| Publication number | Publication date |
|---|---|
| TW202113281A (en) | 2021-04-01 |
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