CN110863873A - Double-heat-source power generation system based on server - Google Patents
Double-heat-source power generation system based on server Download PDFInfo
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- CN110863873A CN110863873A CN201911037541.0A CN201911037541A CN110863873A CN 110863873 A CN110863873 A CN 110863873A CN 201911037541 A CN201911037541 A CN 201911037541A CN 110863873 A CN110863873 A CN 110863873A
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- heat
- working medium
- server
- heat exchanger
- power generation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/14—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours using industrial or other waste gases
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
Abstract
The invention discloses a server-based dual-heat-source power generation system, which is different from the prior art and comprises a heat collection system for collecting the waste heat of a server, a second heat source collection system for collecting other heat sources, and an organic Rankine cycle power generation system for converting the waste heat of the server collected by the heat collection system and the heat collected by the second heat source collection system into electric energy, wherein the other heat sources comprise solar energy, geothermal energy, ocean energy, boiler flue gas waste heat and the like. Compared with the prior art, the organic Rankine cycle power generation system for recycling the medium-low temperature waste heat is coupled with the server waste heat collection system and the heat collection systems of other heat sources such as solar energy, so that on one hand, the low-temperature waste heat is recycled, the energy waste is reduced, the energy utilization rate of the system is improved, meanwhile, new energy sources such as solar energy are used as supplementary heat sources, the system is clean, environment-friendly and efficient, on the other hand, the waste heat discharge temperature and heat discharge quantity of the server are reduced, and the environmental heat pollution is reduced.
Description
Technical Field
The invention relates to a server-based double-heat-source power generation system, and belongs to the technical field of medium and low temperature heat energy utilization.
Background
Energy utilization and environmental protection are two major topics in the world today. Under the condition that the traditional energy sources are gradually reduced, the energy sources are fully utilized, the energy utilization rate is improved, energy conservation and emission reduction are achieved, the fundamental way for solving the energy problems is achieved, and the method is an important measure for realizing the sustainable economic development of China.
The continuous development and use of new energy sources become important subjects in the technical field of energy sources at present. Solar energy, geothermal energy, ocean energy, waste heat and the like are continuously explored and utilized as new energy.
Waste heat recycling is an effective way for improving energy utilization rate and reducing heat pollution emission, and an organic Rankine cycle power generation system is an effective technology for waste heat utilization. The organic Rankine cycle is characterized in that an organic working medium in the system is vaporized at an evaporation end to absorb heat, works at an expansion machine to output mechanical work, is condensed at a condensation end to release heat, and is circulated continuously to finish heat transfer and use, so that the utilization rate of energy is improved, and meanwhile, the heat pollution emission is reduced.
At present, the scale of a data center is larger and larger, and the heat dissipation power and the heat dissipation heat flow density of a server are increased sharply. The heat dissipation of the server affects the work efficiency of the data center, and the heat dissipation of the server of the data center causes serious thermal pollution.
At present, the waste heat of the data center server is transferred to the atmospheric environment in various forms such as air-conditioning and cooling, and the waste heat is not well utilized. The waste heat of the server is effectively utilized, so that the energy utilization rate can be improved, and the heat emission can be reduced.
Disclosure of Invention
The invention aims to overcome the problem of insufficient utilization of the waste heat of the existing server, provides a double-heat-source organic Rankine cycle power generation system taking the waste heat of the server as a first heat source and other heat sources as a second heat source, and fully utilizes the heat dissipation of the server, so the technical scheme adopted by the invention is as follows:
the server-based dual-heat-source power generation system is different from the prior art in that the server-based dual-heat-source power generation system comprises a heat collecting system for collecting waste heat of a server, a second heat source collecting system for collecting other heat sources, and an organic Rankine cycle power generation system for converting the waste heat of the server collected by the heat collecting system and the heat collected by the second heat source collecting system into electric energy, wherein the other heat sources comprise solar energy, geothermal energy, ocean energy, waste heat of boiler flue gas and the like.
Furthermore, the heat collecting system comprises a plurality of heat pipes laid in the server cabinet, each heat pipe comprises a pipe shell, a liquid absorbing core tightly attached to the inner wall of the pipe shell and an end cover, and the inside of each heat pipe is drawn to be 1.3 multiplied by 10-1~-4Filling a phase change working medium after the negative pressure of Pa, and sealing after the capillary porous material of the liquid absorption core is filled with the phase change working medium; one end of the heat pipe in the server cabinet is a hot end, the other end of the heat pipe outside the server cabinet is a cold end, and the cold end of the heat pipe is inserted into the heat exchanger.
Further, the phase change medium is liquid methanol.
Further, the heat pipes are replaced with a back plate heat exchanger.
Furthermore, the second heat source collecting system comprises a second heat exchanger, the second heat exchanger comprises a first working medium gas phase pipeline filled with organic working media and a second working medium pipeline filled with heat conducting oil, and the second working medium pipeline is connected with other heat source collectors.
Further, the organic Rankine cycle power generation system comprises a heat exchanger, a second heat exchanger, a gas-liquid separator, a liquid storage device, an expansion machine and a power generator, wherein an outlet of the heat exchanger is connected with a first working medium inlet of the second heat exchanger through a first working medium gas-phase pipeline, a first working medium of the second heat exchanger is discharged from an inlet of the gas-liquid separator, an outlet of the gas-liquid separator is connected with an inlet of the expansion machine, an outlet of the expansion machine is connected with an inlet of the liquid storage device, an outlet of the liquid storage device is connected with an inlet of the heat exchanger through a first working medium liquid-phase pipeline, organic working media are filled in a coil pipe, a gas-phase pipeline and a liquid-phase pipeline of the heat exchanger and the second heat exchanger, and an.
The heat exchanger comprises a cooling working medium loop, the gas-liquid separator is connected with the liquid storage device through a first branch pipeline and a third valve on the first branch pipeline, a working medium pump is arranged on a first working medium liquid pipeline on which an outlet of the liquid storage device is arranged, a first valve is arranged on a first working medium gas phase pipeline close to an outlet of the heat exchanger, a second valve is arranged on a first working medium liquid pipeline close to an inlet of the heat exchanger, and the first working medium gas phase pipeline between the first valve and the second heat exchanger and the first working medium liquid pipeline between the second valve and the working medium pump are communicated through a second branch pipeline and a throttle valve on the second branch pipeline.
Further, the organic working fluid is R245fa, R227ea, R134a and the like.
Further, the expander is a screw expander.
And further, a pressure gauge and a thermometer are respectively arranged on the first working medium gas phase pipeline, the first working medium liquid phase pipeline, the first branch pipeline and/or the second branch pipeline.
Compared with the prior art, the organic Rankine cycle power generation system for recycling the medium-low temperature waste heat is coupled with the server waste heat collection system and the heat collection systems of other heat sources such as solar energy, so that on one hand, the low-temperature waste heat is recycled, the energy waste is reduced, the energy utilization rate of the system is improved, meanwhile, new energy sources such as solar energy are used as supplementary heat sources, the system is clean, environment-friendly and efficient, on the other hand, the waste heat discharge temperature and heat discharge quantity of the server are reduced, and the environmental heat pollution is reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
Embodiment 1, a server-based dual heat source power generation system as shown in fig. 1 includes a heat collecting system a that collects waste heat of a server, a second heat source collecting system C that collects solar energy, and an organic rankine cycle power generation system B that converts the heat collected by the heat collecting system a and the second heat source collecting system C into electric energy.
The heat collecting system A comprises a plurality of heat pipes 3-1, 3-2 and 3-3 … 3-n laid in the server cabinet, each heat pipe comprises a pipe shell, a liquid absorbing core tightly attached to the inner wall of the pipe shell and an end cover, and the inside of each heat pipe is drawn to be 1.3 multiplied by 10-1~-4Filling a phase change working medium after the negative pressure of Pa, and sealing after the capillary porous material of the liquid absorption core is filled with the phase change working medium; one end of the heat pipe in the server cabinet is a hot end 2, the other end of the heat pipe outside the server cabinet is a cold end 4, and the cold end 4 of the heat pipe is inserted into a heat exchanger 5. The phase change medium is liquid methanol. The organic Rankine cycle power generation system B comprises a heat exchanger 5, an expander 9 and a generator 10, wherein an outlet of the heat exchanger 5 is connected with an inlet of the expander 9 through a gas-phase pipeline 6, an outlet of the expander 9 is connected with an inlet of the heat exchanger 5 through a liquid-phase pipeline 15, and a coil of the heat exchanger 5, the gas-phase pipeline 6 and the liquid-phase pipeline 15 are filled with organic working media. The output shaft of the expander 9 is connected to the input shaft of the generator 10. The organic working medium is R245fa or R227ea or R134a and the like. The expander 9 is a screw expander.
The second heat source collecting system C comprises a second heat exchanger 21, the second heat exchanger 21 comprises a first working medium gas-phase pipeline 6 filled with organic working medium and a second working medium pipeline 22 filled with heat conducting oil, and the second working medium pipeline 22 is connected with the solar heat collector.
The organic Rankine cycle power generation system B comprises a heat exchanger 5, a second heat exchanger 21, a gas-liquid separator 19, a liquid accumulator 18, an expander 9 and a generator 10, the outlet of the heat exchanger 5 is connected with the first working medium inlet of the second heat exchanger 21 through a first working medium gas-phase pipeline 6, the first working medium of the second heat exchanger 21 is discharged from the inlet of the gas-liquid separator 19, the outlet of the gas-liquid separator 19 is connected with the inlet of the expansion machine 9, the outlet of the expander 9 is connected with the inlet of the liquid storage device 18, the outlet of the liquid storage device 18 is connected with the inlet of the heat exchanger 5 through a first working medium liquid phase pipeline 15, the coils of the heat exchanger 5 and the second heat exchanger 21, the gas-phase pipeline 6 and the liquid-phase pipeline 15 are filled with organic working media, and the output shaft of the expander 9 is connected with the input shaft of the generator 10.
Example 2, which is otherwise the same as example 1, except that it further comprises a condensation heat exchanger 11 connected in series between the expander 9 and the accumulator 18, the heat of condensation heat exchanger 11 further comprises a cooling working medium loop 12, the gas-liquid separator 19 is connected with the liquid storage device 18 through a first branch pipeline 28 and a third valve 20 on the first branch pipeline, a working medium pump 19 is arranged on the first working medium liquid phase pipeline 15 where the outlet of the liquid storage device 18 is positioned, a first valve 23 is arranged on the first working medium gas phase pipeline 6 which is close to the outlet of the heat exchanger 5, a second valve 24 is arranged on the first working medium liquid phase pipeline 15 which is close to the inlet of the heat exchanger 5, the first working medium gas phase pipeline 6 between the first valve 23 and the second heat exchanger 21 and the first working medium liquid phase pipeline 15 between the second valve 24 and the working medium pump 19 are also communicated by a second branch pipeline 27 and a throttle valve 25 on the second branch pipeline.
Of course, a pressure gauge and a temperature gauge, not shown in fig. 1, may also be respectively mounted on the first working medium gas-phase line 6, the first working medium liquid-phase line 15, the first branch line 28 and/or the second branch line 27.
The heat pipe is laid in the server cabinet, the working medium in the heat pipe absorbs heat emitted by the server chip at the hot end 2 of the heat pipe, the heat is vaporized into steam to enter the cold end 4 of the heat pipe, and the heat is transmitted to the second part of the organic Rankine cycle part of the system through the heat exchanger 5. Working medium in the cold end 4 of the heat pipe losing heat returns to the hot end 2 of the heat pipe to repeatedly absorb heat under the action of the capillary liquid absorption core in the heat pipe, and circulation is completed.
And the working medium in the organic Rankine cycle power generation system B is a first working medium organic working medium. The organic working medium absorbs heat of the cold end 4 of the heat pipe in the heat exchanger 5 to be vaporized, the vaporized organic working medium enters the second heat exchanger 21 through the first valve 23 to absorb heat of the second heat source system B, the vaporized organic working medium enters the gas-liquid separator 19 to be separated, and the organic working medium gas enters the expander 9 through the first working medium gas-phase pipeline 6 to do work to drive the coaxial generator 10 to rotate. The liquid of the gas-liquid separator 19 enters the reservoir 18 through the third valve 20. The organic working medium at the outlet of the expansion machine 9 is cooled by the cooling loop 12 through the condensing heat exchanger 11 for further temperature reduction, and enters the liquid storage device 18 after temperature reduction. Under the action of the working medium pump 19, the liquid in the liquid storage device 18 returns to the heat exchanger 5 through the first working medium liquid pipeline 15 and the second valve 24 to absorb heat emitted by the server for evaporation, and the circulation is completed.
The gas-liquid separator 19 in the power generation system is used for separating gaseous organic working media from liquid organic working media.
In the second heat source system C, the organic working medium in the organic rankine cycle power generation system B absorbs the heat of the second working medium pipeline 22 through the second heat exchanger 21. In this embodiment, the second heat exchanger 21 is a solar heat collector, and the second working medium corresponding to the second working medium in the second working medium pipeline 22 is heat conducting oil. Solar energy is as the heating source of second heat source system C, and is clean environmental protection, simple structure, easily realizes.
The second heat exchanger 21 in this example may also be a heat releasing heat exchanger of geothermal energy, ocean energy, other heat sources such as hot water or steam of a gas boiler, or other heat releasing heat exchangers of waste heat of flue gas and steam.
The condensation heat exchanger 11 in the power generation system is used for further reducing the temperature of the organic working medium at the outlet of the expansion machine 9, and the heat exchange can be carried out by cooling with cooling water or by cooling with forced convection air. And then the organic working medium with lower temperature enters the first heat exchanger 5 to absorb more heat of the cold end 4 of the heat pipe.
The liquid storage device 18 in the power generation system is used for collecting and storing liquid organic working media formed in the organic Rankine cycle power generation system, and the flow of the organic working media in the organic Rankine cycle power generation system is adjusted through the second valve 24.
When the data center stops working, the first valve 23 and the second valve 24 are closed, and the second part of the organic Rankine cycle power generation system B and the third part of the second heat source system C work in combination.
In the invention, a heat pipe is adopted to collect heat dissipation of a server chip, a heat collection system A, an organic Rankine cycle power generation system B and a second heat source system C form a set of complete server waste heat recycling dual-heat-source organic Rankine cycle power generation system, pressure gauges and temperature gauges can be arranged at multiple positions in a system pipeline for monitoring pressure and temperature, and the system is not shown in figure 1. The regulation of the flow, pressure and temperature of the organic working medium in the system is realized through the matching of the second valve 24 and the throttle valve 25 on the second branch pipeline, a set of double-heat-source organic Rankine cycle power generation system which fully utilizes the waste heat of the low-temperature heat source server is formed, and the energy utilization rate of the organic Rankine cycle power generation system for recycling the waste heat of the server is improved.
It is understood that other derivative systems made by those skilled in the art in light of the teachings of the present server-based organic rankine cycle power generation system are within the scope of the present invention.
Claims (10)
1. A dual heat source power generation system based on a server is characterized in that: the system comprises a heat collecting system (A) for collecting the waste heat of a server, a second heat source collecting system (C) for collecting other heat sources, and an organic Rankine cycle power generation system (B) for converting the waste heat of the server collected by the heat collecting system (A) and the heat collected by the second heat source collecting system (C) into electric energy, wherein the other heat sources comprise solar energy, geothermal energy, ocean energy, boiler hot water or steam waste heat or boiler flue gas.
2. A server-based dual heat source power generation system according to claim 1, wherein: the heat collecting system (A) comprises a plurality of heat pipes (3-1, 3) laid in the server cabinet2. 3-3 … 3-n), the heat pipe is composed of a pipe shell, a liquid absorption core tightly attached to the inner wall of the pipe shell and an end cover, and the inside of the pipe is drawn to be 1.3 multiplied by 10-1~-4Filling a phase change working medium after the negative pressure of Pa, and sealing after the capillary porous material of the liquid absorption core is filled with the phase change working medium; one end of the heat pipe in the server cabinet is a hot end (2), one end of the heat pipe outside the server cabinet is a cold end (4), and the cold end (4) of the heat pipe is inserted into the heat exchanger (5).
3. A server-based dual heat source power generation system according to claim 2, wherein: the phase change medium is liquid methanol.
4. A server-based dual heat source power generation system according to claim 2, wherein: the heat pipes are replaced by a back plate heat exchanger.
5. A server-based dual heat source power generation system according to claim 1, wherein: the second heat source collecting system (C) comprises a second heat exchanger (9), the second heat exchanger (21) comprises a first working medium gas-phase pipeline (6) filled with organic working medium and a second working medium pipeline (22) filled with heat conducting oil, and the second working medium pipeline (22) is connected with other heat source collectors.
6. A server-based dual heat source power generation system according to claim 1, wherein: the organic Rankine cycle power generation system (B) comprises a heat exchanger (5), a second heat exchanger (21), a gas-liquid separator (19), a liquid storage device (18), a condensation heat exchanger (11), an expansion machine (9) and a power generator (10), wherein an outlet of the heat exchanger (5) is connected with a first working medium inlet of the second heat exchanger (21) through a first working medium gas-phase pipeline (6), a first working medium outlet of the second heat exchanger (21) is connected with an inlet of the gas-liquid separator (19), an outlet of the gas-liquid separator (19) is connected with an inlet of the expansion machine (9), an outlet of the expansion machine (9) is connected with an inlet of the liquid storage device (18), an outlet of the liquid storage device (18) is connected with an inlet of the heat exchanger (5) through a first working medium liquid-phase pipeline (15), and coils of the heat exchanger (5) and the second heat exchanger (21), Organic working media are filled in the gas-phase pipeline (6) and the liquid-phase pipeline (15), and an output shaft of the expansion machine (9) is connected with an input shaft of the generator (10).
7. A server-based dual heat source power generation system according to claim 6, wherein: the heat exchanger comprises a heat condensing heat exchanger (11) connected in series between an expansion machine (9) and a liquid storage device (18), wherein the heat condensing heat exchanger (11) further comprises a cooling working medium loop (12), the gas-liquid separator (19) is connected with the liquid storage device (18) through a first branch pipeline (28) and a third valve (20) on the first branch pipeline, a working medium pump (19) is installed on a first working medium liquid phase pipeline (15) where an outlet of the liquid storage device (18) is located, a first valve (23) is installed on a first working medium gas phase pipeline (6) close to the outlet of the heat exchanger (5), a second valve (24) is installed on the first working medium liquid phase pipeline (15) close to an inlet of the heat exchanger (5), the first working medium gas phase pipeline (6) between the first valve (23) and the second heat exchanger (21) and the first working medium liquid phase pipeline (15) between the second valve (24) and the working medium pump (19) are also connected by the second valve (24) The branch pipeline (27) is communicated with a throttle valve (25) on the second branch pipeline.
8. A server-based dual heat source power generation system according to claim 5 or 6, wherein: the organic working medium is R245fa or R227ea or R134a and the like.
9. A server-based dual heat source power generation system according to claim 5 or 6, wherein: the expander (9) is a screw expander.
10. A server-based dual heat source power generation system according to claim 5 or 6, wherein: and a pressure meter and a thermometer are respectively arranged on the first working medium gas phase pipeline (6), the first working medium liquid phase pipeline (15), the first branch pipeline (28) and/or the second branch pipeline (27).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911037541.0A CN110863873A (en) | 2019-10-29 | 2019-10-29 | Double-heat-source power generation system based on server |
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| CN201911037541.0A CN110863873A (en) | 2019-10-29 | 2019-10-29 | Double-heat-source power generation system based on server |
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| CN111706453A (en) * | 2020-06-24 | 2020-09-25 | 北京百度网讯科技有限公司 | Generator set preheating system and control method thereof |
| CN114263513A (en) * | 2021-12-24 | 2022-04-01 | 江西锋铄新能源科技有限公司 | Ecological computing power type ORC waste heat power generation system |
| CN114893270A (en) * | 2022-05-09 | 2022-08-12 | 北京百度网讯科技有限公司 | Dual heat source power generation system, method, apparatus and computer program product |
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| CN114893270A (en) * | 2022-05-09 | 2022-08-12 | 北京百度网讯科技有限公司 | Dual heat source power generation system, method, apparatus and computer program product |
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Application publication date: 20200306 |