CN106507647B - Solar absorption refrigeration and liquid cooling combined heat radiation system - Google Patents
Solar absorption refrigeration and liquid cooling combined heat radiation system Download PDFInfo
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- CN106507647B CN106507647B CN201611208103.2A CN201611208103A CN106507647B CN 106507647 B CN106507647 B CN 106507647B CN 201611208103 A CN201611208103 A CN 201611208103A CN 106507647 B CN106507647 B CN 106507647B
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- 238000001816 cooling Methods 0.000 title claims abstract description 139
- 239000007788 liquid Substances 0.000 title claims abstract description 75
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 68
- 238000005057 refrigeration Methods 0.000 title claims abstract description 49
- 230000005855 radiation Effects 0.000 title claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000010438 heat treatment Methods 0.000 claims abstract description 52
- 230000017525 heat dissipation Effects 0.000 claims abstract description 49
- 239000003507 refrigerant Substances 0.000 claims description 41
- 239000006096 absorbing agent Substances 0.000 claims description 31
- 238000005338 heat storage Methods 0.000 claims description 27
- 238000004378 air conditioning Methods 0.000 claims description 9
- 230000001502 supplementing effect Effects 0.000 claims description 5
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 17
- 238000012546 transfer Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- 239000000306 component Substances 0.000 description 24
- 239000012530 fluid Substances 0.000 description 15
- 238000001704 evaporation Methods 0.000 description 12
- 238000009835 boiling Methods 0.000 description 9
- 238000005265 energy consumption Methods 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 230000008020 evaporation Effects 0.000 description 8
- 230000008901 benefit Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000013589 supplement Substances 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
- H05K7/208—Liquid cooling with phase change
- H05K7/20827—Liquid cooling with phase change within rooms for removing heat from cabinets, e.g. air conditioning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption type
- F25B15/02—Sorption machines, plants or systems, operating continuously, e.g. absorption type without inert gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
- F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
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- 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
- H05K7/20772—Liquid cooling without phase change within server blades for removing heat from heat source
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The utility model relates to a cooling system that solar energy absorption refrigeration and liquid cooling combine, including solar energy absorption refrigeration device, still include cooling device, be used for the radiating air conditioner end of server rack and be used for with the liquid cooling module of the heat transfer of server heating chip, solar energy absorption refrigeration device passes through pipeline and air conditioner end-to-end connection formation circulation loop, and cooling device passes through the pipeline and is connected formation circulation loop with the liquid cooling module. This patent is through combining solar energy absorption refrigeration technique and liquid cooling technique, and the high-efficient refrigeration guarantees the heat dissipation demand of server, solves the overheated problem of computer lab part, can make full use of solar energy prepare the supplementary heat dissipation of refrigerated water under the circumstances that need not electric compression refrigerating plant again, reduces computer lab PUE value and power consumption, and is energy-concerving and environment-protective.
Description
Technical Field
The patent relates to the field of machine room air conditioner heat dissipation, in particular to a heat dissipation system combining solar absorption refrigeration and liquid cooling.
Background
Statistical data show that the annual power consumption of 2014 IDC (Internet data center) in China exceeds 828.5 hundred million degrees (which is equivalent to burning more than 3000 ten thousand tons of standard coal), the statistical data account for about 1.5 percent of the total amount of electricity used by the whole society in the current year, and the increased CO2 emission exceeds 8000 ten thousand tons. Under the development theme of two societies of energy conservation and environmental protection, the huge energy consumption behind the data center restricts the further development of energy conservation and emission reduction work in China. Regardless of the size of the data center (or server rack), they share a common point: the heat dissipation device comprises heat dissipation devices, the heat dissipation devices have to be dissipated, the service life of the devices is longer under the condition of low temperature, and the devices can run more quickly, so that the machine room air conditioner is applied to a data center in a large amount, the power consumption of the machine room air conditioner directly accounts for 40% of the power consumption of the data center, and auxiliary buildings such as peripheral offices, transportation and dormitories matched with the data center need a large amount of heat to solve the heating problem in winter.
The compressor is a main power consumption component of the air conditioning system, and noise is large in operation, so that how to reduce the operation time of the compressor and even remove the compressor is a key for reducing the energy consumption of a machine room. In chinese patent application publication No. CN102734979a, a solar energy absorption refrigeration system is provided, which includes an evaporator for evaporating and refrigerating a refrigerant, an absorber for absorbing refrigerant vapor by using an absorbent, a generator for heating and evaporating a refrigerant solution, a condenser for releasing heat from the refrigerant vapor, and a condenser for absorbing heat from the absorption process by using cooling water after absorbing heat from the absorption process by the absorber and then releasing heat from the refrigerant vapor by using the condenser; a solar heating system including a solar collector and a heat collection tank is also included for heating the refrigerant solution in the generator.
The technical scheme utilizes the principle of an absorption refrigerator, removes a compressor, utilizes clean energy as a heat source for driving, avoids the defects caused by the introduction of outdoor cold air and the refrigeration mode of adopting a gas-gas honeycomb heat exchanger, and reduces the energy consumption at the same time, but with the rapid development of IT technology and the rapid growth of data service demands, the application of a high-heat-density server is increased, the power of a single rack is increased, and the phenomenon of local overheating of a machine room is promoted, so that the heat dissipation requirement of the server is difficult to be met only by the traditional air cooling mode.
The invention provides a server cabinet heat dissipation system combining a gate type heat pipe air conditioner and a liquid cooling device in Chinese patent application with publication number of CN104703449A, which comprises a liquid cooling server cabinet, wherein the liquid cooling server cabinet comprises a cabinet body and a plurality of liquid cooling servers arranged in the cabinet body, the liquid cooling device is arranged for directly cooling the liquid cooling servers, and the gate type heat pipe air conditioner is also arranged for assisting in heat dissipation. According to the technical scheme, the liquid cooling heat dissipation technology is adopted for main refrigeration, the cabinet-level heat pipe heat dissipation technology is adopted for auxiliary refrigeration, the refrigeration efficiency is high, the effect is good, the problem of local overheating cannot occur, but the door-type heat pipe air conditioner comprises a cold water machine, a core component in the cold water machine is still a compressor, and the problem of overlarge energy consumption of a machine room is not solved.
How to combine solar absorption refrigeration and liquid cooling technology becomes a technical problem to be solved.
Disclosure of Invention
In order to overcome the defects of the prior art, the patent provides a heat dissipation system combining solar absorption refrigeration and liquid cooling, which is used for efficiently refrigerating by combining a solar absorption refrigeration technology and a liquid cooling technology, ensuring the heat dissipation requirement of a server, solving the problem of local overheating of a machine room, fully utilizing solar energy to prepare chilled water for auxiliary heat dissipation under the condition of not needing an electric compression refrigeration device, reducing the PUE value and the power consumption of the machine room, and being energy-saving and environment-friendly.
For the heat dissipation system combining solar absorption refrigeration and liquid cooling, the technical problems are solved as follows: the utility model provides a solar energy absorption refrigeration and cooling combined cooling system, includes solar energy absorption refrigeration device, still includes cooling device, is used for the terminal and the liquid cooling module that is used for the heat transfer with the server chip that generates heat of server radiating air conditioner of server rack, solar energy absorption refrigeration device passes through pipeline and air conditioner end-to-end connection and forms the circulation loop, and cooling device passes through the pipeline and is connected with the liquid cooling module and form the circulation loop.
The solar energy is inexhaustible green clean energy, so the solar energy absorption refrigeration device which uses the solar energy as a driving heat source can obviously reduce the energy consumption of a heat dissipation system, save the energy and generate positive social and economic benefits, and has the characteristics of cleanness, no pollution and safe use. The distributed heat of the server can be efficiently taken away by adopting the solar absorption refrigeration device and combining with the tail end of the air conditioner installed near the cabinet: because the tail end of the air conditioner is used for directly radiating the server cabinet, the heat radiation requirement can be met even if the air inlet temperature of the equipment in the machine room is increased to more than 23 ℃, and the air supply temperature and the cooling efficiency are improved; in addition, 70% -80% of heat in the server is taken away by the liquid cooling module, the rest of distributed heat in the server allows the air supply temperature to be further improved to be more than 27 ℃, the chilled water temperature can be improved by 8-10 ℃, and the energy efficiency ratio of the system can be remarkably improved. The heat of the main heating device of the server is taken away by adopting a liquid cooling mode, and the advantage of the heat is that: the temperature of the server heating chip is 50-70 ℃ during normal operation, the liquid cooling module for radiating can meet radiating requirements only by using a liquid heat exchange medium at 30-40 ℃, and the liquid cooling module utilizes the characteristics of high heat conduction of a heat pipe, high specific heat capacity of the liquid heat exchange medium, high heat convection speed, high evaporation latent heat and the like, and combines a cooling device to bring the heat of the server out of a machine room efficiently, so that a better radiating effect is achieved. This patent combines the advantage of solar energy absorption refrigeration technique and liquid cooling technique both, is responsible for taking away the heat of the outer heating element of server heating chip by solar energy absorption refrigeration device radiating air conditioner end, and cooling device cooperation liquid cooling module takes away the heat of server heating chip, improves refrigeration efficiency when energy-concerving and environment-protective, has solved the overheated problem of computer lab part, and cooling system operation in-process need not electric compressor, and energy-conserving effect is showing, has reduced the noise simultaneously.
Further, the air conditioner end is used for being arranged side by side with the server cabinet.
A plurality of rows of parallel server cabinets are arranged in a common machine room, a closed cold channel is formed between the two rows of server cabinets, the tail end of an air conditioner and the server cabinets are arranged in parallel and opposite, blown cold air enters the closed cold channel and then enters the servers after opposite flushing, so that the cold air is distributed more uniformly in the servers, the heat of other elements except for heating chips of the servers is better absorbed, the hot air formed after the heat is absorbed flows to an air return port at the tail end of the air conditioner, and the cold air is formed after heat is released in the tail end of the air conditioner, so that the circulation is realized.
Further, the air conditioning terminal is used for being arranged on the back of the server cabinet.
The heat productivity of the components except the chip in the server only occupies 20% -30% of the heat productivity of the server, the heat dissipation requirement is satisfied by utilizing the air convection heat dissipation, the heat dissipation is good by utilizing the liquid cooling technology, but pipelines capable of enabling liquid to flow are additionally paved, and in order to enable all the components in the server to conduct liquid cooling heat dissipation, the design of the required pipelines is complex, so that the components are not suitable for unified liquid cooling heat dissipation of the heating components of the server, the air conditioner terminal with a simple structure and easy implementation is arranged at the back of the server cabinet, and the heat exchange is conducted by blowing hot air in the server into the air conditioner terminal.
Further, the tail end of the air conditioner comprises a door type cold water heat exchanger and a fan arranged on the door type cold water heat exchanger; the gate-type cold water heat exchanger is connected with the solar absorption refrigeration device through a pipeline to form a circulation loop.
Further, the liquid cooling module comprises a heat pipe component, a water cooling plate, a current collector and a distributor, wherein one end of the heat pipe component is used for exchanging heat with the server heating chip, and the other end of the heat pipe component is contacted with the water cooling plate; the distributor, the water cooling plate, the current collector and the cooling device are sequentially connected through pipelines to form a circulation loop.
The heat productivity of the server heating chip occupies 70% -80% of the heat productivity of the server, the liquid cooling module exchanges heat with the server heating chip by utilizing the characteristics of high heat conduction of the heat pipe, high specific heat capacity of the liquid cooling heat exchange medium, high heat convection speed, high evaporation latent heat and the like, so that the internal temperature of the server heating chip is kept between 50 ℃ and 65 ℃ to normally operate; when one end of the heat pipe component is heated, the liquid in the pipe is quickly vaporized, flows to the other end, namely the end connected with the water cooling plate under the power of heat diffusion, condenses and releases heat, and then flows back to the heated end, so that the heat of the server heating chip is transferred to the water cooling plate in a circulating way; the heat exchange between the chip and the water cooling plate is realized through the heat pipe component, so that the normal work of the server heating chip is not influenced when the medium fluid medium of the water cooling plate leaks, the heat pipe component and the water cooling plate have the characteristics of low heat resistance and high heat conduction efficiency, the evaporation and condensation circulation is not required to be driven by external force, and the rapid heat conduction can be realized. The utility model provides a data center computer lab is including a plurality of servers, it is impractical to dispel the heat to every server heating chip alone, also produces the potential safety hazard because intensive equipment easily when causing the waste, and this patent is concentrated the fluid medium that the water-cooling board that will use in each server flows together through the mass flow ware, carries out the heat dissipation through cooling device after, distributes each water-cooling board through the distributor with the fluid medium again, has reduced equipment and pipeline that the heat dissipation was handled required, reduce cost, reduced the space that occupies the computer lab.
Further, the cooling device comprises a cooling tower and a plate heat exchanger, the cooling tower is connected with the plate heat exchanger through a pipeline to form a circulation loop, and the liquid cooling module is connected with the plate heat exchanger through a pipeline to form a circulation loop; and water supplementing tanks are arranged between the cooling tower and the plate heat exchanger as well as between the plate heat exchanger and the liquid cooling module.
When evaporation loss occurs in the heat exchange process of the fluid medium or the fluid medium is taken away by air due to splashing and the like, the fluid medium can be timely supplemented by the water supplementing tank, the internal pressure in the cooling device is stabilized, and the safe operation of the cooling device is ensured.
Further, the solar absorption refrigeration device comprises an absorption refrigerator and a solar heat source module, wherein the absorption refrigerator and the tail end of the air conditioner are connected through a pipeline to form a circulation loop, and the solar heat source module and the absorption refrigerator are connected through a pipeline to form a circulation loop.
The solar energy source module is utilized to absorb solar energy, and the solar energy source module can provide heat sources for the absorption refrigerator and simultaneously provide clean and pollution-free energy sources for auxiliary buildings such as peripheral offices, transportation and dormitories matched with the data center, so that the energy consumption is greatly reduced.
Further, the absorption refrigerator comprises a generator, a condenser, a throttle valve, an evaporator and an absorber which are sequentially connected to form a refrigerant circulation loop, wherein the evaporator is connected with the tail end of the air conditioner through a pipeline to form a circulation loop, the generator is connected with the solar heat source module through a pipeline to form a circulation loop, and the generator is connected with the absorber through a pipeline to form an absorbent circulation loop.
According to the principle of an absorption refrigerator, refrigerant evaporates in an evaporator, absorbs heat of a door-type cold water heat exchanger, and then the evaporated refrigerant is absorbed by a concentrated solution with a boiling point higher than that of the refrigerant in the absorber to form a dilute solution; the dilute solution flows into the generator through a circulating loop connected with the generator through the absorber, and the generator absorbs the heat of the solar heat source module, so that the original concentrated solution has higher boiling point, and the refrigerant is evaporated first and flows into the condenser; the concentrated solution returns to the absorber to absorb the evaporated refrigerant through the circulating loop; in the condenser, the refrigerant condenses to release heat and flows into the throttle valve; the throttle valve creates a low pressure environment and the refrigerant has a reduced boiling point at low pressure, meaning that the refrigerant is able to evaporate at low temperature, and then the refrigerant at low pressure flows into the evaporator, repeating the step of evaporating and absorbing the heat of the portal cold water heat exchanger. Wherein the absorber requires a low temperature because the concentrated solution in the absorber can condense the vaporized refrigerant in a low temperature state, thereby better absorbing the refrigerant; the generator requires high temperature because the dilute solution in the generator is easier to evaporate the refrigerant in the high temperature state, and the solution heat exchanger makes the high temperature concentrated solution flowing back from the generator to the absorber in the circulation loop exchange heat with the low temperature dilute solution flowing from the absorber to the generator, thereby effectively utilizing energy and improving working efficiency.
Further, the solar heat source module comprises a solar heat collector and a heat storage water tank, wherein the solar heat collector is connected with the heat storage water tank through a pipeline to form a circulation loop, and the heat storage water tank is connected with the absorption refrigerator through a pipeline to form a circulation loop.
The heat collected from the solar heat collector can be stored in the heat storage water tank firstly, so that the heat is prevented from overflowing and being wasted, the heat in the heat storage water tank is conveyed into the absorption refrigerator to be used as a heat source, because the possibility of utilizing solar energy only exists in daytime, the heat source module does not directly utilize the heat in the solar heat collector, but stores the heat through the heat storage water tank, so that the operation reliability of the heat source module is greatly improved.
Further, an auxiliary heating device and a heating interface are arranged in the heat storage water tank.
The auxiliary heating device is an electric heater or other heating devices utilizing industrial waste heat and waste heat. When solar radiation is seriously insufficient at night or in winter, the solar heat collector cannot absorb enough solar energy, the heat transferred to the heat storage box is reduced, so that the heat transferred to the single-effect absorption refrigerator is insufficient, at the moment, the heat radiation system can start the auxiliary heating device to ensure that enough heat in the heat storage box is transferred to the absorption refrigerator to serve as a heat source, and the heat storage box can also utilize solar energy to provide domestic hot water for peripheral supporting facilities of a data center through a heating interface in winter, so that pollution is reduced, and energy is saved.
Drawings
Fig. 1 is a system configuration diagram of the present patent.
Fig. 2 is a schematic view of another arrangement of an air conditioning terminal.
Fig. 3 is a schematic structural view of the cooling device.
Fig. 4 is a schematic view of another construction of a solar absorption refrigeration apparatus.
Detailed Description
Example 1:
a heat dissipation system combining solar absorption refrigeration and liquid cooling as shown in fig. 1 includes a server cabinet 000, a solar absorption refrigeration device 500, and a cooling device (not shown in the figure), wherein the server cabinet 000 includes a cabinet body 001 and a plurality of servers 002; the heat dissipation system further comprises an air conditioner end 400 arranged on the server cabinet 000 and a liquid cooling module 300 exchanging heat with the server heating chip 003, the solar absorption refrigeration device 500 is connected with the air conditioner end 400 through a pipeline to form a circulation loop, and the cooling device is connected with the liquid cooling module 300 through a pipeline to form a circulation loop.
The solar energy is an inexhaustible green clean energy, so the solar absorption refrigeration device 500 using the solar energy as a driving heat source has the characteristics of cleanness, no pollution and safe use besides remarkably reducing the energy consumption of a heat dissipation system, saving energy and generating positive social and economic benefits. Because the heat quantity of the various heat generating chips 003 in the server 002 is different, in practical application, all or part of the heat generating chips 003 can be selected to be connected into a heat dissipation system for heat dissipation, and the main heat generating chips 003 in the server can be selected to be connected into the heat dissipation system. . The distributed heat except the server heating chip 003 of the server 112 is taken away by utilizing the air conditioner tail end 400 of nearby air supply, the air supply temperature can be increased to be more than 27 ℃, the energy efficiency of a heat dissipation system is improved, and meanwhile, the heat productivity of the main heating chip 003 of the server 002 is taken away by adopting direct liquid cooling. The liquid cooling module 300 utilizes the characteristics of high-efficiency heat conduction of the heat pipe component 004, high specific heat capacity of the liquid heat exchange medium, high heat convection speed, high evaporation latent heat and the like to bring the heat of the server 002 out of the machine room, thereby achieving better heat dissipation effect. This patent combines the advantage of solar energy absorption refrigeration technique and liquid cooling technique both, carries out radiating air conditioner end 400 by solar energy absorption refrigeration device 500 and is responsible for taking away the heat of the outer heating element of server heating chip 003, and cooling device cooperation liquid cooling module 300 takes away the heat of server heating chip 003, improves refrigeration efficiency in energy-concerving and environment-protective, has solved the overheated problem of computer lab part, need not electric compressor in the cooling system operation process, and energy-conserving effect is showing, has reduced the noise simultaneously.
The liquid cooling module 300 comprises a heat pipe component 004, a water cooling plate 005, a current collector 008 and a distributor 009, wherein one end of the heat pipe component 004 exchanges heat with the server heating chip 003, and the other end of the heat pipe component 004 contacts with the water cooling plate 005; the distributor 009, the liquid inlet connecting branch pipe 007, the water cooling plate 005, the liquid outlet connecting branch pipe 006, the current collector 008 and the cooling device are sequentially connected through pipelines to form a circulation loop.
The heat productivity of the server heating chip occupies 70% -80% of the heat productivity of the server, the liquid cooling module 300 exchanges heat to the server heating chip 003 by utilizing the characteristics of large specific heat capacity of the liquid cooling heat exchange medium and quick convection heat exchange, so that the internal temperature of the server heating chip is kept between 50 ℃ and 65 ℃ to normally operate; when one end of the heat pipe component 004 is heated, the liquid in the pipe is quickly vaporized, flows to the other end, namely the end connected with the water cooling plate 005 under the power of heat diffusion, condenses and releases heat, and then flows back to the heated end, so that the heat of the server heating chip 003 is transferred to the water cooling plate 005 in a circulating manner; heat exchange is performed between the chip 003 and the water cooling plate 005 through the heat pipe component 004, so that the normal operation of the server heating chip 003 is not affected when leakage occurs in the medium fluid medium of the water cooling plate 005, and the heat pipe component 004 utilizes a low-thermal-resistance efficient heat conduction channel, so that liquid evaporation and condensation circulation are not required to be driven by external force, and heat is conducted rapidly. The utility model discloses a data center computer lab includes a plurality of servers 002 in, it is impractical to dispel the heat to every server heating chip 003 alone, also produce the potential safety hazard because intensive equipment easily when causing the waste, this patent is concentrated the fluid medium that water-cooling board 005 that uses in each server 002 flows together through the mass flow device 008, after carrying out natural cooling heat dissipation through cooling device, again with the fluid medium distribute each water-cooling board 005 through distributor 009 in, equipment and pipeline that the heat dissipation was handled is reduced, the cost is reduced, the space that occupies the computer lab has been reduced.
The air conditioner terminal 400 comprises a door type cold water heat exchanger 011 and a fan 012 arranged on the door type cold water heat exchanger 011, wherein the door type cold water heat exchanger 011 is arranged at the back of the server cabinet 000 and is connected with the solar absorption refrigeration device 500 through a pipeline to form a circulation loop.
The heat productivity of the components except the chip 003 in the server 002 only occupies 20% -30% of the heat productivity of the server 002, the heat dissipation by air convection is enough to meet the heat dissipation requirement, and the liquid cooling technology is used for heat dissipation, but the liquid cooling technology is good, pipelines capable of enabling liquid to flow are additionally paved, and in order to enable all the heating components in the server to conduct liquid cooling heat dissipation, the design of the required pipelines is complex, so that the components in the server 002 are not suitable for unified liquid cooling heat dissipation, but the door type cold water heat exchanger 011 and the fan 012 which are simple in structure and easy to implement are used for air convection heat dissipation, and the fan 012 is used for blowing hot air in the server 002, the cabinet body 001 and even the server cabinet 000 into the door type cold water heat exchanger 011 for heat exchange.
The solar absorption refrigeration device 500 includes an absorption refrigerator 100 and a solar heat source module 200, the absorption refrigerator 100 and the door-type cold water heat exchanger 011 are connected by a pipeline to form a circulation loop, and the solar heat source module 200 and the absorption refrigerator 100 are connected by a pipeline to form a circulation loop.
The solar heat source module 200 is utilized to absorb solar energy, and can provide heat sources for the absorption refrigerator 100 and clean and pollution-free energy sources for auxiliary buildings such as peripheral offices, transportation and dormitories matched with a data center, so that the energy consumption is greatly reduced.
The absorption refrigerator 100 comprises a generator 101, a condenser 102, a throttle valve 103, an evaporator 104 and an absorber 105 which are sequentially connected, wherein the evaporator 104 is connected with a door-type cold water heat exchanger 011 through a pipeline to form a circulation loop, the generator 101 is connected with a solar heat source module 200 through a pipeline to form a circulation loop, and the generator 101 is connected with the absorber 105 through a pipeline to form a circulation loop; a solution heat exchanger 107 is provided in the circulation loop between the generator 101 and the absorber 105.
According to the principle of an absorption refrigerator, refrigerant evaporates in the evaporator 104, absorbs heat of the door-type cold water heat exchanger 011, and then the evaporated refrigerant is absorbed by a concentrated solution having a higher boiling point than the refrigerant in the absorber 105 to form a dilute solution; the dilute solution flows into the generator 101 through a circulation loop in which the absorber 105 is connected with the generator 101, and the generator 101 absorbs heat of the solar heat source module 200, because the original concentrated solution has a higher boiling point, so that the refrigerant is evaporated first and flows into the condenser 102; the concentrated solution is returned to the absorber 105 through a circulation loop to absorb the evaporated refrigerant; in the condenser 102, the refrigerant condenses to release heat, and flows into the throttle valve 103; the throttle valve 103 creates a low pressure environment, and the refrigerant has a reduced boiling point at low pressure, meaning that the refrigerant can evaporate at low temperature, and then the refrigerant at low pressure flows into the evaporator 104, repeating the step of evaporating and absorbing heat from the portal cold water heat exchanger 011. Wherein the absorber requires a low temperature because the concentrated solution in the absorber 105 can condense the vaporized refrigerant in a low temperature state, thereby better absorbing the refrigerant; the generator 101 requires a high temperature because the dilute solution in the generator 101 is more likely to evaporate the refrigerant in a high temperature state, and the solution heat exchanger 107 exchanges heat between the high temperature concentrated solution flowing from the generator 101 to the absorber 105 in the circulation loop and the low temperature dilute solution flowing from the absorber 105 to the generator 101, thereby effectively utilizing energy and improving working efficiency.
The solar heat source module 200 comprises a solar heat collector 201 and a heat storage water tank 203, wherein the solar heat collector 201 is connected with the heat storage water tank 203 through a pipeline to form a circulation loop, and the heat storage water tank 203 is connected with the generator 101 through a pipeline to form a circulation loop; an auxiliary heating device 205 is provided in the heat storage tank 203.
The auxiliary heating device 205 is an electric heater or other heating device utilizing industrial waste heat and waste heat. When solar radiation is seriously insufficient at night or in winter, the solar collector 201 cannot absorb enough solar energy, so that the heat transferred to the heat storage tank 203 is reduced, and the heat transferred to the single-effect absorption refrigerator by the heat storage tank 203 is insufficient, at this time, the heat dissipation system can start the auxiliary heating device 205 to ensure that enough heat in the heat storage tank 203 is transferred to the generator 101 to serve as a heat source.
The working principle of the patent is as follows:
s1: the refrigerant evaporates in the evaporator 104, absorbs the heat of the portal cold water heat exchanger 011, and then the evaporated refrigerant is absorbed by the concentrated solution having a higher boiling point than the refrigerant in the absorber 105 to form a dilute solution;
s2: the dilute solution is pumped into the generator 101 through the solution pump 106, and the generator 101 absorbs the heat of the heat storage water tank 203, so that the original concentrated solution has a higher boiling point, and the refrigerant is evaporated first and flows into the condenser 102;
s3: the concentrated solution is returned to the absorber 105 through the solution pump 106 in the circulation loop to absorb the evaporated refrigerant, and meanwhile, the solution heat exchanger 107 enables the high-temperature concentrated solution flowing back to the absorber 105 from the generator 101 in the circulation loop to exchange heat with the low-temperature dilute solution flowing to the generator 101 from the absorber 105, so that energy is effectively utilized, and the working efficiency is improved;
s4: in the condenser 102, the refrigerant condenses to release heat, and flows into the throttle valve 103; the throttle valve 103 creates a low pressure environment, while the refrigerant has a reduced boiling point at low pressure, meaning that the refrigerant can evaporate at low temperature, and then the refrigerant at low pressure flows into the evaporator 104, and the next step returns to step S1.
In step S1, the working method of the door-type cold water heat exchanger 011 is as follows:
s11: the door-type cold water heat exchanger 011 cools the hot air conveyed by the fan 012, the cooled air flows into the cabinet body 001 again, the heat of the internal elements of the server 002 is taken away, the heat dissipation requirement of the elements except the chip 003 in the server 002 is satisfied by utilizing the air convection heat dissipation, and the structure is simple;
s12: the gate cold water heat exchanger 011 releases heat into the evaporator 104 through the chilled water pump 010.
The working method of the liquid cooling module 300 for taking away the heat in the chip 003 is as follows:
s111: one end of the heat pipe component 004 absorbs heat of the server heating chip 003, the other end releases the heat into the water cooling plate 005, so that normal operation of the server heating chip 003 is not affected when fluid medium in the water cooling plate 005 leaks, and the heat pipe component 004 utilizes a low-thermal-resistance high-efficiency heat conduction channel, does not need external force to drive liquid evaporation and condensation circulation, and enables the heat to be conducted rapidly;
s112: the server cabinet 000 comprises a plurality of servers 002, the fluid medium flowing out of the water cooling plates 005 corresponding to the servers 002 is concentrated together by the current collector 008, after natural cooling and heat dissipation treatment is carried out by the cooling device, the fluid medium is distributed to each water cooling plate 005 by the distributor 009, equipment and pipelines required by heat dissipation treatment are reduced, the cost is reduced, and the space occupying a machine room is reduced.
In step S2, the working method of the thermal storage tank 203 is as follows:
s21: the solar heat collector 201 transfers the absorbed solar energy into the heat storage water tank 203 through the first heat source pump 202;
s32: then the heat storage water tank 203 transfers heat to the generator 101, when the solar energy is sufficient, the heat storage water tank 203 can continuously store the heat remained after the transfer, so that the energy is saved; when solar radiation is seriously insufficient at night or in winter, the auxiliary heating device 205 can be started, so that enough heat in the heat storage water tank 203 is transferred to the generator 101 through the second heat source pump 204, and the system stability is improved.
Example 2:
as shown in fig. 2 to 4, this embodiment is different from embodiment 1 in that there are a plurality of server racks 000 arranged side by side, and a plurality of corresponding air conditioning terminals 400, and the air conditioning terminals 400 are installed between the side by side server racks 000.
A plurality of rows of parallel server cabinets 000 are arranged in a common machine room, a closed cold channel is formed between the two rows of server cabinets 000, the air conditioner tail ends 400 are oppositely arranged, blown cold air enters the server 002 after being hedging in the cold channel, so that the distribution of the cold air in the server 002 is more uniform, the heat of other elements except for a server heating chip 003 is better absorbed, the hot air formed after the heat absorption flows to a return air inlet of the air conditioner tail ends 400, and the cold air is formed after the heat release in the air conditioner tail ends 400, so that the circulation is realized.
In the specific implementation process, the air conditioner terminal 400 is an inter-column air conditioner, is installed among columns of the plurality of server cabinets 000, dissipates heat close to the server cabinets 000, combines the characteristics of low thermal resistance and high heat conduction efficiency of the heat pipe component 004 and the water cooling plate 005, can meet the heat dissipation requirement even if the air inlet temperature of the machine room equipment is increased to more than 27 ℃, and improves the air supply temperature and the cooling efficiency.
The cooling device comprises a cooling tower 605 and a plate heat exchanger 603, wherein the cooling tower 605 is connected with the plate heat exchanger 603 through a pipeline to form a circulation loop, and a distributor 009, a liquid inlet connecting branch pipe 007, a water cooling plate 005, a liquid outlet connecting branch pipe 006, a current collector 008 and the cooling device are sequentially connected through pipelines to form a circulation loop; and a water supplementing tank 601 is arranged between the cooling tower 605 and the plate heat exchanger 603, and between the plate heat exchanger 603 and the distributor or the collector.
In operation, fluid medium flowing from header 008 flows through first water pump 602 into plate heat exchanger 603 for heat exchange, and then flows back into distributor 009; the coolant in the cooling tower 605 flows into the plate heat exchanger 603 by the second water pump 604 for heat exchange. When evaporation loss occurs in the heat exchange process of the fluid medium or the coolant or the splash is taken away by air, the water supplementing tank 601 can timely supplement the fluid medium or the coolant, stabilize the internal pressure in the cooling device and ensure the safe operation of the cooling device.
In the specific implementation process, the cooling tower radiates heat in a natural cooling mode, so that the energy is saved and the environment is protected.
The evaporator 104 is connected with the air conditioning terminal 400 through a pipeline to form a circulation loop.
A heating interface 206 is also provided in the thermal storage tank 203.
The heat storage water tank 203 can provide domestic hot water for peripheral supporting facilities of the data center through the heating interface 206 by utilizing solar energy received by the solar heat collector 201, and is clean, pollution-free and low in energy consumption.
Claims (8)
1. The heat dissipation system combining solar absorption refrigeration and liquid cooling comprises a solar absorption refrigeration device and is characterized by further comprising a cooling device, an air conditioner tail end for radiating heat of a server cabinet and a liquid cooling module for exchanging heat with a server heating chip, wherein the solar absorption refrigeration device is connected with the air conditioner tail end through a pipeline to form a circulation loop, and the cooling device is connected with the liquid cooling module through a pipeline to form a circulation loop;
the solar energy absorption type refrigerating device comprises an absorption type refrigerating machine and a solar energy heat source module, wherein the absorption type refrigerating machine is connected with the tail end of an air conditioner through a pipeline to form a circulation loop, and the solar energy heat source module is connected with the absorption type refrigerating machine through a pipeline to form a circulation loop;
the absorption refrigerator comprises a generator, a condenser, a throttle valve, an evaporator and an absorber which are sequentially connected to form a refrigerant circulation loop, wherein the throttle valve is used for manufacturing a low-temperature environment, the evaporator is connected with the tail end of an air conditioner through a pipeline to form a circulation loop, the generator is connected with a solar heat source module through a pipeline to form a circulation loop, and the generator is connected with the absorber through a pipeline to form an absorbent circulation loop;
the circulating loop between the generator and the absorber is also provided with a solution heat exchanger and a solution pump, the high-temperature concentrated solution flowing back to the absorber from the generator exchanges heat with the low-temperature diluted solution flowing to the generator from the absorber through the solution heat exchanger, and the concentrated solution in the generator flows back to the absorber through the solution pump.
2. The solar absorption refrigeration and liquid cooling combined heat dissipating system of claim 1, wherein the air conditioning terminal is configured to be disposed side-by-side with a server cabinet.
3. The solar absorption refrigeration and liquid cooling combined heat dissipating system of claim 1, wherein the air conditioning terminal is configured to be disposed on a back of a server cabinet.
4. A solar absorption refrigeration and liquid cooling combined heat dissipating system according to claim 3 wherein the air conditioning terminal comprises a door type cold water heat exchanger and a fan mounted on the door type cold water heat exchanger; the gate-type cold water heat exchanger is connected with the solar absorption refrigeration device through a pipeline to form a circulation loop.
5. The heat dissipation system combining solar absorption refrigeration and liquid cooling according to any one of claims 1 to 4, wherein the liquid cooling module comprises a heat pipe component, a water cooling plate, a current collector and a distributor, one end of the heat pipe component is used for exchanging heat with a server heating chip, and the other end of the heat pipe component is in contact with the water cooling plate; the distributor, the water cooling plate, the current collector and the cooling device are sequentially connected through pipelines to form a circulation loop.
6. The heat dissipation system combining solar absorption refrigeration and liquid cooling according to any one of claims 1 to 4, wherein the cooling device comprises a cooling tower and a plate heat exchanger, the cooling tower is connected with the plate heat exchanger through a pipeline to form a circulation loop, and the liquid cooling module is connected with the plate heat exchanger through a pipeline to form a circulation loop; and water supplementing tanks are arranged between the cooling tower and the plate heat exchanger as well as between the plate heat exchanger and the liquid cooling module.
7. The heat radiation system combining solar absorption refrigeration and liquid cooling according to claim 1, wherein the solar heat source module comprises a solar heat collector and a heat storage water tank, the solar heat collector is connected with the heat storage water tank through a pipeline to form a circulation loop, and the heat storage water tank is connected with the absorption refrigerator through a pipeline to form a circulation loop.
8. The solar absorption refrigeration and liquid cooling combined heat radiation system according to claim 7, wherein an auxiliary heating device is arranged in the heat storage water tank.
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| CN107920458B (en) * | 2017-11-30 | 2023-09-15 | 郑州云海信息技术有限公司 | Heat dissipation system and control method thereof |
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