CN116696531B - Microchannel heat exchange system for train - Google Patents
Microchannel heat exchange system for train Download PDFInfo
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- CN116696531B CN116696531B CN202310467464.2A CN202310467464A CN116696531B CN 116696531 B CN116696531 B CN 116696531B CN 202310467464 A CN202310467464 A CN 202310467464A CN 116696531 B CN116696531 B CN 116696531B
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- heat exchange
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- circulating
- working medium
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- 238000001816 cooling Methods 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 18
- 230000017525 heat dissipation Effects 0.000 claims abstract description 13
- 239000002912 waste gas Substances 0.000 claims abstract description 6
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 51
- 238000010248 power generation Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 239000002918 waste heat Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000003137 locomotive effect Effects 0.000 description 11
- 239000002826 coolant Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C5/00—Locomotives or motor railcars with IC engines or gas turbines
- B61C5/04—Arrangement or disposition of exhaust apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a micro-channel heat exchange system for a train, which comprises a heat exchange device, a temperature control device and an organic Rankine cycle device, wherein the heat exchange device comprises a first circulating pipeline, a second circulating pipeline and an exhaust gas discharge channel, and the first circulating pipeline is communicated with a cooling unit of an engine and is used for circulating the cooling working medium of the engine; the second circulating pipeline is arranged on the periphery of the first circulating pipeline, a heat exchange space is formed between the outer wall of the first circulating pipeline and the inner wall of the second circulating pipeline, organic working medium circulates in the heat exchange space, and the waste gas discharge channel is arranged on the periphery of the second circulating pipeline and used for discharging high-temperature tail gas and transmitting heat to the second circulating pipeline; wherein the first circulating pipeline is provided with an electromagnetic valve; the temperature control device is used for monitoring the temperature of the cooling working medium, and is controlled in an interlocking way with the electromagnetic valve so as to start the heat dissipation cycle of the cooling working medium; the organic Rankine cycle device is used for enabling the circulated organic working medium to do work outwards. The scheme realizes the recovery of train waste heat energy.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a micro-channel heat exchange system for a train.
Background
The diesel locomotive and the diesel electric locomotive have the advantages of convenient and flexible use, low basic investment and the like, and are suitable for some lines with less busy transportation and less train number, shunting small operation and the like. Some developing countries with small road network scale or countries with small areas can be put into operation immediately after purchasing, so as to solve the railway transportation problem. Therefore, most of developing countries or countries with smaller areas adopt trains mainly pulled by internal combustion engines, so that the internal combustion engines reach a large and wide extent.
However, these diesel powered locomotives typically have 40% -60% efficiency, with a significant amount of heat being wasted in the necessary emissions. In addition to the exhaust gases, the cooling unit is cooled by the fresh air drawn during the cooling process of the diesel engine on the locomotive, and then the hot air is exhausted, which also causes heat waste. In order to improve the thermal efficiency of a diesel engine and reduce fuel consumption, it is necessary to develop a technology for recovering waste heat.
Disclosure of Invention
The invention mainly aims to provide a micro-channel heat exchange system for a train, which aims to solve the technical problem of waste heat energy recovery of a diesel locomotive or a diesel electric locomotive.
In order to achieve the above object, the present invention provides a micro-channel heat exchange system for a train, the micro-channel heat exchange system for a train comprising:
the heat exchange device comprises a first circulating pipeline, a second circulating pipeline and an exhaust emission channel, wherein the first circulating pipeline is communicated with a cooling unit of the engine and is used for circulating cooling working media of the engine; the second circulating pipeline is arranged on the periphery of the first circulating pipeline, a heat exchange space is formed between the outer wall of the first circulating pipeline and the inner wall of the second circulating pipeline, organic working media circulate in the heat exchange space, and the waste gas discharge channel is arranged on the periphery of the second circulating pipeline and used for discharging high-temperature tail gas and transmitting heat to the second circulating pipeline; wherein the first circulating pipeline is provided with an electromagnetic valve;
the temperature control device is used for monitoring the temperature of the cooling working medium and is controlled in an interlocking way with the electromagnetic valve so as to start the heat dissipation cycle of the cooling working medium; the method comprises the steps of,
the organic Rankine cycle device is used for enabling the circulated organic working medium to do work outwards.
Optionally, the first circulation pipeline and the second circulation pipeline are both coiled pipes.
Optionally, the first circulation pipeline and the second circulation pipeline are provided with a plurality of circulation pipelines, and each of the first circulation pipeline and each of the second circulation pipeline are arranged in parallel.
Optionally, the heat exchange device further comprises a first liquid feeding channel and a first liquid outlet channel, and the first liquid feeding channel and the first liquid outlet channel are both communicated with the first circulating pipeline.
Optionally, the heat exchange device further comprises a second liquid feeding channel and a second liquid outlet channel, and the second liquid feeding channel and the second liquid outlet channel are both communicated with the second circulating pipeline.
Optionally, the exhaust gas discharge channel is further provided with a fan, and the fan is arranged close to an air outlet of the exhaust gas discharge channel and is used for discharging exhaust gas.
Optionally, the organic rankine cycle device comprises an expander and a condensing device, the second circulation pipeline is communicated with the expander, and the expander is communicated with the condensing device and is used for performing rankine cycle to do work externally.
Optionally, the device further comprises a power generation device and a power storage device, wherein the expander is in driving connection with the power generation device, and the power generation device is electrically connected with the power storage device so as to generate power.
Optionally, the electrical storage device is a supercapacitor.
Optionally, the air outlets of the exhaust gas discharge channels are positioned at two sides of the train.
Optionally, the inner wall of the exhaust gas discharge channel is provided with a heat insulating material.
According to the technical scheme, the temperature of the cooling working medium of the diesel engine is monitored through the temperature control device, the cooling working medium is introduced into the first circulation pipeline when subjected to heat dissipation circulation, and organic working medium in the second circulation pipeline absorbs heat energy of the first circulation pipeline and the waste gas discharge channel and undergoes phase change to drive the organic Rankine cycle device to do work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a perspective view of one embodiment of a heat exchange device in a micro-channel heat exchange system for a train provided by the invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a right side view of the alternative form of FIG. 1;
FIG. 4 is a perspective view of the structure in the sectional state of FIG. 1;
FIG. 5 is a perspective view of a portion of the structure of FIG. 4;
FIG. 6 is a cross-sectional view of the first and second circulation pipes of FIG. 4;
FIG. 7 is a perspective view of another embodiment of a heat exchange device in a micro-channel heat exchange system for a train according to the present invention;
FIG. 8 is a perspective view of the structure of FIG. 7 in a sectional state;
FIG. 9 is a schematic diagram illustrating the installation of an embodiment of a heat exchange device on a train in a microchannel heat exchange system for a train according to the present invention;
fig. 10 is a schematic diagram of an embodiment of a micro-channel heat exchange system for a train according to the present invention.
In the figure: the micro-channel heat exchange system for the train comprises a heat exchange device-1, a first circulating pipeline-11, a second circulating pipeline-12, an exhaust gas discharge channel-13, an air inlet-131, a heat exchange space-14, a first liquid feeding channel-15, a cooling working medium inlet-151, a first liquid outlet channel-16, a cooling working medium outlet-161, a second liquid feeding channel-17, an organic working medium inlet-171, a second liquid outlet channel-18, an organic working medium outlet-181, an expander-21, a condensing device-22, a power generation device-23, an electric storage device-24 and a diesel engine-200.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
For a better description and illustration of embodiments of the present application, reference may be made to one or more of the accompanying drawings, but additional details or examples used to describe the drawings should not be construed as limiting the scope of any one of the inventive, presently described embodiments or preferred modes of carrying out the present application.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are positional relationships based on the drawings, are merely for convenience of describing the present invention, and do not indicate that the apparatus referred to must have a specific orientation or operate in a specific orientation, and thus should not be construed as limiting the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Diesel powered locomotives typically have 40% -60% efficiency, with a significant amount of heat being wasted in the necessary emissions. In addition to the exhaust gases, the cooling unit performs a heat dissipation cycle through the sucked air during the cooling process of the diesel engine on the locomotive, whether liquid cooling or air cooling, and then discharges the hot air, which also causes heat waste. In order to improve the thermal efficiency of a diesel engine and reduce fuel consumption, it is necessary to develop a technology for recovering waste heat.
In view of this, the present invention proposes a micro-channel heat exchange system for a train, which is mainly used for a diesel locomotive or a diesel electric locomotive, fig. 1 to 10 are an embodiment of the micro-channel heat exchange system for a train provided by the present invention, please refer to fig. 1 to 10, and the micro-channel heat exchange system 100 for a train includes a heat exchange device 1, a temperature control device and an organic rankine cycle device (not shown in the drawings).
Specifically, the heat exchange device 1 includes a first circulation pipe 11, a second circulation pipe 12 and an exhaust gas discharge channel 13, the first circulation pipe 11 is communicated with a cooling unit of the diesel engine, after the cooling medium in the cooling unit dissipates heat of the diesel engine, the temperature can reach more than 90 ℃, a thermostat is opened to perform heat dissipation circulation of the cooling medium, and at the moment, the cooling medium is introduced into the first circulation pipe 11 to perform circulation heat dissipation; the second circulation pipeline 12 is sleeved on the periphery of the first circulation pipeline 11, a heat exchange space 14 is formed between the outer wall of the first circulation pipeline 11 and the inner wall of the second circulation pipeline 12, organic working media circulate in the heat exchange space 14, and the exhaust gas discharge channel 13 is sleeved on the periphery of the second circulation pipeline 12 and is used for discharging high-temperature tail gas and transferring heat to the second circulation pipeline 12. Wherein, an electromagnetic valve is arranged in the first circulating pipeline 11; the temperature control device is used for monitoring the temperature of the cooling working medium and controlling the temperature control device in an interlocking way with the electromagnetic valve, and when the temperature of the cooling working medium reaches a preset value, the electromagnetic valve is opened to start the heat dissipation cycle of the cooling working medium; after the organic working medium absorbs heat of the cooling working medium and the waste gas, the organic Rankine cycle device does work on the outside, so that heat energy is recovered. It should be noted that, working on the outside may be generating electricity or using it as auxiliary power to other power units.
According to the technical scheme, the temperature of the cooling working medium of the diesel engine is monitored through the temperature control device, the cooling working medium is introduced into the first circulation pipeline 11 when subjected to heat dissipation circulation, and the organic working medium in the second circulation pipeline 12 absorbs heat energy of the first circulation pipeline 11 and the waste gas discharge channel 13 and undergoes phase change to drive the organic Rankine cycle device to do work outwards.
In order to improve the circulation effect and improve the heat transfer area of the exhaust gas and the cooling medium, referring to fig. 2 and 6, in an embodiment of the present invention, the first circulation pipe 11 and the second circulation pipe 12 are both coiled pipes, and the coiled pipes can effectively improve the heat transfer efficiency of the pipe walls.
Further, the first circulation pipes 11 and the second circulation pipes 12 are provided in plurality, and each of the first circulation pipes 11 and each of the second circulation pipes 12 are provided in parallel. Referring to fig. 1, 3 and 4, in the present embodiment, there are 5 first circulation pipes 11 and 5 second circulation pipes 12, and 5 exhaust gas discharge passages 13 are also provided. By dividing the exhaust gas discharge channel 13 into a plurality of exhaust gas discharge channels, exhaust gas can be gathered relatively, the space utilization rate is improved, and the heat transfer effect is further improved.
In an embodiment of the present invention, fins (not shown) are disposed in the first circulation pipe 11, the second circulation pipe 12 and the exhaust gas discharge channel 13 to increase the heat transfer area. In addition, the described
Referring to fig. 4 and 5, in an embodiment of the present invention, the heat exchange device 1 further includes a first liquid feeding channel 15 and a first liquid discharging channel 16. Specifically, the exhaust gas discharging channel 13 has a rectangular structure, and the front and rear sides of the exhaust gas discharging channel are opened to form an air inlet and an air outlet, and of course, other columnar structures can be designed; the exhaust gas discharge channel 13 is horizontally arranged, and the first circulating pipeline 11 and the second circulating pipeline 12 which are in a coiled pipe shape are both fixed in the exhaust gas discharge channel and horizontally arranged; the liquid inlet of the first circulation pipeline 11, which is a coiled pipe, is connected to the left side plate, the liquid outlet of the first circulation pipeline 11 is connected to the right side plate, the first liquid feeding channel 15 and the first liquid outlet channel 16 are external pipes, are respectively arranged on the left side plate and the right side plate of the exhaust gas discharging channel 13, and are communicated with the liquid inlet and the liquid outlet of the first circulation pipeline 11. When the first circulation pipeline 11 is provided with a plurality of liquid inlets and a plurality of liquid outlets, the first liquid feeding channels 15 and the first liquid discharging channels 16 are respectively provided with corresponding external pipes and are clustered together and are communicated into the heat dissipation circulation pipeline of the cooling working medium, and thus the high-temperature cooling working medium can continuously circulate in the first circulation pipeline 11. Of course, the embodiment of the present invention is not limited thereto, referring to fig. 7 and 8, the first circulation pipe 11 and the second circulation pipe 12 may be disposed vertically, and the first liquid feeding channel 15 and the first liquid discharging channel 16 are disposed on the upper and lower side plates of the exhaust gas discharging channel 13; similarly, the outer connecting pipes are clustered together, and the high-temperature cooling working medium can uniformly flow into each first circulating pipeline 11 by adopting a mode of up-down distribution.
Referring to fig. 4 and 5, in an embodiment of the present invention, the heat exchange device 1 further includes a second liquid feeding channel 17 and a second liquid discharging channel 18. Specifically, the second liquid feeding channel 17 and the second liquid discharging channel 18 are cavities, and the first liquid feeding channel 15 and the first liquid discharging channel 16 are respectively arranged in the two cavities; the second liquid feeding channel 17 and the second liquid outlet channel 18, which are cavities, are respectively provided on the left side plate and the right side plate of the exhaust emission channel 13, a cooling working medium inlet 151, an organic working medium inlet 171, a cooling working medium outlet 161 and an organic working medium outlet 181 are respectively provided on the cavities, the first liquid feeding channel 15 and the first liquid outlet channel 16 are respectively communicated with the cooling working medium inlet 151 and the cooling working medium outlet 161, and the organic working medium inlet 171 and the organic working medium outlet 181 are respectively communicated with the second circulation pipeline 12 through the second liquid feeding channel 17 and the second liquid outlet channel 18. Of course, the embodiment of the present invention is not limited thereto, and referring to fig. 7 and 8, the first circulation pipe 11 and the second circulation pipe 12 may be disposed vertically, and the second liquid feeding channel 17 and the second liquid discharging channel 18 are disposed on the upper and lower side plates of the exhaust gas discharging channel 13, so that the organic medium can flow into the heat exchanging space 14 in each of the second circulation pipes 12 having a serpentine shape more uniformly in an up-down distribution manner.
In an embodiment of the present invention, the exhaust gas discharge channel 13 is further provided with a first fan (not shown in the figure), the first fan is a high temperature resistant fan, and the first fan is disposed near an air outlet of the exhaust gas discharge channel 13, so as to accelerate the exhaust gas discharge speed by the first fan, thereby improving the heat dissipation efficiency.
To convert the absorbed thermal energy into other energy, the orc device includes an expander 21 and a condenser 22. Referring to fig. 10, the second circulation pipe 12 is connected to the expander 21, and the expander 21 is connected to the condensing device 22, so as to perform rankine cycle to perform external work. When the organic Rankine cycle device works, the diesel engine 200 is exhausted and connected in series to the exhaust emission channel 13 through a pipeline, and the high-temperature tail gas exchanges heat; the second circulation pipe 12 is internally provided with a low boiling point organic working medium, and the organic working medium is vaporized under the heat of the high temperature tail gas of the diesel engine 200 and the high temperature cooling working medium thereof, enters the expander 21 and pushes the expander 21 to operate so as to output kinetic energy; the organic working medium gas with reduced temperature enters the condensing device 22 and is converted into liquid after being cooled, and the liquid organic working medium reenters the second circulating pipeline 12 through a pump group; similarly, the cooling medium with reduced temperature also enters the condensing device 22 to cool, returns to the water tank of the diesel engine 200, and then enters the first circulation pipeline 11 again through the pump group.
It should be appreciated that to enhance the cooling effect of the condensing unit 22, a second fan (not shown) may be used to accelerate the cooling, and the second fan is disposed at the bottom of the train, and is used to suck air at the bottom of the train and cool the condensing unit 22. During the cooling process, the heated hot air can also be integrated into the exhaust gas discharge channel 13, and the first fan sends the combined hot exhaust gas out from the air outlet.
In order to convert the absorbed thermal energy into electrical energy, in an embodiment of the present invention, a power generation device 23 and a power storage device 24 are further included. Referring to fig. 10, the expander 21 is drivingly connected to the power generation device 23, and the power generation device 23 is electrically connected to the power storage device 24. In particular, when the organic working medium pushes the expander 21 to operate, kinetic energy is output to the power generation device 23, and the power generation device 23 stores the converted electric energy in the electric storage device 24. In this embodiment, the electric storage device 24 can provide electric energy for the fan to drive the first fan to accelerate exhaust emission and the second fan to dissipate heat from the condensing device, so that the remaining electric energy is stored.
The expansion machine 21, the condensing device 22, the power generation device 23, and the power storage device 24 are piston expansion machines 21, condensers, generators, and storage batteries, which are commonly used in the market.
In one embodiment of the present invention, the power storage device 24 is a super capacitor. The super capacitor can provide power with super-large current and can be used as a starting power supply of a diesel electric locomotive so as to reduce diesel consumption.
Usually, the diesel engine cooling unit of the train is arranged at the bottom of the train, air is sucked through skirt edges at two sides of the train, hot air is discharged at the bottom after heat dissipation of the diesel engine, but the air temperature at the bottom of the train is continuously increased, and the use of equipment at the bottom of the train is affected.
In order to prevent heat from accumulating at the bottom of the train, referring to fig. 9, in an embodiment of the invention, the air outlets of the exhaust gas discharge channels 13 are located at the skirts of both sides of the train. In this embodiment, a plurality of heat exchange devices 1 are arranged side by side, and the fan is disposed between the skirt edge on one side of the train and the heat exchange device 1 and is close to the air outlet of the exhaust gas discharge channel 13, and the other side is also arranged. When the train runs, the second fan sucks new air in the space at the bottom of the train to cool the cooling working medium and the organic working medium in the condensing device 22, the new air absorbs heat and high-temperature tail gas is combined, then the heat exchange device 1 emits heat to the new air, and finally the air after heat emission is sent out into the environment spaces at two sides of the train through the first fan. Under the air circulation mode, the high-temperature tail gas of the train and the air for heat dissipation of the diesel engine are safely discharged
In an embodiment of the present invention, the inner wall of the exhaust gas discharging channel 13 is provided with a heat insulating material, and the heat insulating material can be used to effectively collect the heat of the high-temperature exhaust gas, so that the heat can be better transferred to the outer wall of the second circulation pipeline 12.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (3)
1. A microchannel heat exchange system for a train, comprising:
the heat exchange device (1) comprises a first circulation pipeline (11), a second circulation pipeline (12) and an exhaust emission channel (13), wherein the first circulation pipeline (11) is communicated with a cooling unit of the engine and is used for circulating cooling working media of the engine; the second circulating pipeline (12) is arranged on the periphery of the first circulating pipeline (11), a heat exchange space (14) is formed between the outer wall of the first circulating pipeline (11) and the inner wall of the second circulating pipeline (12), organic working fluid flows into the heat exchange space (14), and the waste gas discharge channel (13) is arranged on the periphery of the second circulating pipeline (12) and is used for discharging high-temperature tail gas and transferring heat to the second circulating pipeline (12); wherein the first circulating pipeline (11) is provided with an electromagnetic valve;
the temperature control device is used for monitoring the temperature of the cooling working medium, the temperature control device is in interlocking control with the electromagnetic valve, and when the temperature of the cooling working medium of the engine is detected to reach a preset value, the electromagnetic valve is opened to start the heat dissipation cycle of the cooling working medium of the engine; the method comprises the steps of,
the organic Rankine cycle device is used for enabling the circulated organic working medium to do work outwards;
the first circulating pipeline (11) and the second circulating pipeline (12) are both coiled pipes;
the first circulating pipelines (11) and the second circulating pipelines (12) are provided with a plurality of circulating pipelines, and the first circulating pipelines (11) and the second circulating pipelines (12) are arranged in parallel;
the heat exchange device (1) further comprises a first liquid conveying channel (15) and a first liquid outlet channel (16), and the first liquid conveying channel (15) and the first liquid outlet channel (16) are both communicated with the first circulating pipeline (11);
the heat exchange device (1) further comprises a second liquid conveying channel (17) and a second liquid outlet channel (18), and the second liquid conveying channel (17) and the second liquid outlet channel (18) are both communicated with the second circulating pipeline (12);
the organic Rankine cycle device comprises an expander (21) and a condensing device (22), wherein the second circulating pipeline (12) is communicated with the expander (21), and the expander (21) is communicated with the condensing device (22) and is used for carrying out Rankine cycle so as to do work outwards;
the exhaust emission channel (13) is provided with a first fan, and the first fan is arranged close to an air outlet of the exhaust emission channel (13) and used for accelerating the exhaust emission speed;
the heat exchange system further comprises a second fan, wherein the second fan is arranged at the bottom of the train and is used for sucking air at the bottom of the train and cooling the condensing device (22);
the power generation device (23) and the power storage device (24) are further included, the expander (21) is in driving connection with the power generation device (23), and the power generation device (23) is electrically connected with the power storage device (24) so as to generate power.
2. The microchannel heat exchange system for trains according to claim 1, characterized in that the outlets of the exhaust gas discharge channels (13) are located on both sides of the train.
3. The micro-channel heat exchange system for a train according to claim 1, wherein the inner wall of the exhaust gas discharge channel (13) is provided with a heat insulating material.
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| CN202310467464.2A CN116696531B (en) | 2023-04-27 | 2023-04-27 | Microchannel heat exchange system for train |
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| CN104712402A (en) * | 2013-12-12 | 2015-06-17 | 霍特安热能技术（江苏）有限公司 | Organic Rankine cycle power generation system using waste heat of engine exhaust |
| CN104564422A (en) * | 2014-12-30 | 2015-04-29 | 清华大学 | Comprehensive utilization system for waste heat of internal combustion engine |
| CN206668348U (en) * | 2017-02-20 | 2017-11-24 | 北京理工大学 | A kind of reheat-type organic Rankine cycle engine residual neat recovering system |
| CN108374714A (en) * | 2018-01-08 | 2018-08-07 | 三峡大学 | A kind of Organic Rankine Cycle plenum internal-combustion engine system and method |
| CN110345656A (en) * | 2018-12-30 | 2019-10-18 | 浙江吉智新能源汽车科技有限公司 | A kind of heat pump system, thermal management algorithm and vehicle |
| CN114776418A (en) * | 2022-05-17 | 2022-07-22 | 江苏大学 | Heat-storage-type smoke exhaust pipe and truck oil tank heat insulation system based on radial heat pipes and control strategy thereof |
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