CN105897062A - Microchannel heat exchange-based waste-heat direct power generation device - Google Patents
Microchannel heat exchange-based waste-heat direct power generation device Download PDFInfo
- Publication number
- CN105897062A CN105897062A CN201610425495.1A CN201610425495A CN105897062A CN 105897062 A CN105897062 A CN 105897062A CN 201610425495 A CN201610425495 A CN 201610425495A CN 105897062 A CN105897062 A CN 105897062A
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- China
- Prior art keywords
- heat exchanger
- working medium
- micro
- thermoelectric material
- microchannel
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N11/00—Generators or motors not provided for elsewhere; Alleged perpetua mobilia obtained by electric or magnetic means
- H02N11/002—Generators
Abstract
The invention provides a microchannel heat exchange-based waste-heat direct power generation device, which comprises a thermoelectric material, a microchannel heat exchanger, a working medium pump, an ordinary heat exchanger and a pipeline, wherein a cold end of the thermoelectric material is in tight contact with the microchannel heat exchanger; the working medium in a microchannel is R30 or R21; the working medium and the cold end of the thermoelectric material are subjected to efficient boiling heat exchange; and the cold end is maintained in a stable low-temperature condition, so that the thermoelectric conversion efficiency is ensured. The boiling working medium brings heat to the ordinary heat exchanger through the working medium pump and then heat exchange is carried out on the working medium and the environment, so that the working medium is liquefied. The microchannel heat exchange device is a copper rectangular thin plate; a plurality of microchannels are arranged in the microchannel heat exchange device; round holes or square holes are selected as the microchannels according to the practical application; and an air-cooled heat exchanger, a water-cooled heat exchanger or a ground source heat exchanger is selected as the ordinary heat exchanger according to the actual condition. The temperature of the cold end of the thermoelectric material is controlled by combining the microchannel heat exchanger and the working medium in a boiling heat exchange manner and is kept at a stable low temperature; the power generation efficiency of the thermoelectric material is improved; and the service lifetime of the thermoelectric material is prolonged.
Description
Technical field
The present invention relates to a kind of waste heat direct electric power generator, a kind of waste heat direct generation of electricity based on Thermal Performance of Micro Channels fills
Put.
Background technology
Along with the development of micro-channel heat exchanger, it is at microelectronics technology, aviation field, chemical field, and energy field is all
There is certain application.Micro-channel heat exchanger is micron level due to characteristic dimension, has different compared with the equipment of conventional yardstick
Feature, as volume is little, light weight, efficiency is high.Just because of these advantages so that Thermal Performance of Micro Channels technology is the most not
Disconnected development, during application is the most constantly expanded simultaneously.
Contemporary semiconductor material technology develops rapidly, and the most various semi-conducting materials the most constantly occur.According to match
Bake principle, when quasiconductor two ends exist the temperature difference, its loop can produce electromotive force, and circuit two ends produce electric potential difference, thus produce
Raw DC source.But, quasiconductor generate electricity during, how to control its cold junction temperature not with hot-side temperature rising and
Change, controls its cold junction temperature stable, is still a difficult problem.
Summary of the invention
The invention aims to provide a kind of waste heat direct electric power generator based on Thermal Performance of Micro Channels, solve now with partly leading
During body generating, control the problem that quasiconductor cold junction temperature does not changes with the rising of hot-side temperature.
The object of the present invention is achieved like this: this TRT, including thermoelectric material, micro-channel heat exchanger, working medium pump,
Ordinary heat exchanger and pipeline；Micro-channel heat exchanger, working medium pump and ordinary heat exchanger are communicated by placed in series, constitute closed loop and lead to
Road, working medium is circulating through boiling and liquefaction in closed channel, the cold end face of thermoelectric material and micro-channel heat exchanger
End face is in close contact.
Described working medium is R30 or R21, and in the microchannel of micro-channel heat exchanger, working medium is carried out efficiently with the cold end of thermoelectric material
Boiling heat transfer, makes the cryogenic conditions that the cold end maintenance of thermoelectric material is stable, it is ensured that conversion efficiency of thermoelectric；The working medium of boiling is passed through
Heat is taken to ordinary heat exchanger by working medium pump to carry out heat exchange with environment again and makes working medium liquefaction cycle.
Described micro-channel heat exchanger, for copper rectangular thin plate, has some microchannels inside copper rectangular thin plate, and microchannel can
To be chosen as circular hole or square hole according to reality application, size selects also according to practical situation.
Described ordinary heat exchanger selects air-cooled heat exchanger, water cooling heat exchanger or ground-coupled heat exchanger.
The described microchannel in micro-channel heat exchanger can be chosen as circular hole or square hole, and size determines according to practical situations
Beneficial effect, owing to have employed such scheme, receives continual heat q pair of self-heat power in thermoelectric material hot junction
Thermoelectric material provides thermal source, and thermoelectric material cold and micro-channel heat exchanger are in close contact, and controls the cold end of thermoelectric material in time
Temperature keeps certain；Working medium, by the multiple circular holes within micro-channel heat exchanger or square hole, flows under the effect of working medium pump
Dynamic；Owing to the coefficient of heat transfer of micro-channel heat exchanger is stronger than the heat exchanger exchange capability of heat of stock size, such that it is able to preferably maintain
Heat transfer effect, it is ensured that the temperature stabilization of cold end.Solve during generating electricity now with quasiconductor, quasiconductor cold junction temperature
The problem changed with the rising of hot-side temperature, has reached the purpose of the present invention.
Advantage: carry out high efficient heat exchanging by micro-channel heat exchanger and working medium thereof, maintains in time stable low of the cold end of thermoelectric material
Temperature environment, controls boiling working medium heat exchange, and thermoelectric material cold temperature keeps stablizing low temperature, improves the generating efficiency of thermoelectric material
And service life.
Technical problem solved by the invention, it is simply that the waste heat direct electric power generator of a kind of Thermal Performance of Micro Channels is provided.
Accompanying drawing illustrates:
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is micro-channel heat exchanger schematic diagram.
Fig. 3 is micro-channel heat exchanger and schematic diagram during thermoelectric material work.
In figure: 1, thermoelectric material；2, micro-channel heat exchanger；3, working medium pump；4, ordinary heat exchanger；5, pipeline.
Detailed description of the invention
Below in conjunction with the accompanying drawings the present invention is elaborated.
Embodiment 1: this TRT, including thermoelectric material 1, micro-channel heat exchanger 2, working medium pump 3, ordinary heat exchanger 4
With pipeline 5；Micro-channel heat exchanger 2, working medium pump 3 and ordinary heat exchanger 4 are communicated by pipeline 5 series connection, constitute closed loop and lead to
Road, working medium in closed channel through boiling with liquefy circulate, the cold end face of thermoelectric material 1 and micro-channel heat exchanger
The end face of 2 is in close contact.
Described working medium is R30 or R21, and in the microchannel of micro-channel heat exchanger 2, working medium is carried out with the cold end of thermoelectric material 1
Efficiently boiling heat transfer, makes the cryogenic conditions that the cold end maintenance of thermoelectric material 1 is stable, it is ensured that conversion efficiency of thermoelectric；The work of boiling
Heat is taken to ordinary heat exchanger by working medium pump 3 and carries out heat exchange with environment again and make working medium liquefaction cycle by matter.
Described micro-channel heat exchanger, for copper rectangular thin plate, has some microchannels inside copper rectangular thin plate, and microchannel can
To be chosen as circular hole or square hole according to reality application, size selects also according to practical situation
Described ordinary heat exchanger 4 selects air-cooled heat exchanger, water cooling heat exchanger or ground-coupled heat exchanger.
The boiling point of described working medium R30 is 40.7 DEG C；Or the boiling point of R21 is 8.9 DEG C.
During work, in Fig. 3, the continual heat q receiving self-heat power in thermoelectric material hot junction provides heat to thermoelectric material
Source, and thermoelectric material cold directly contacts with micro-channel heat exchanger.Micro-channel heat exchanger is fully contacted with thermoelectric material cold,
The cold junction temperature controlling thermoelectric material timely is certain.Can be chosen as circular hole or square hole inside micro-channel heat exchanger, size can
Determine according to practical situations, carry out the flowing of working medium.The coefficient of heat transfer changing than stock size due to micro-channel heat exchanger
Hot device exchange capability of heat is strong, such that it is able to preferably maintain heat transfer effect, it is ensured that the temperature stabilization of cold end.In micro-channel heat exchanger
Heat-exchange working medium can select R30 in summer, and its standard boiling temperature is 40.7 DEG C, can select R21 in winter, its standard
Boiling temperature is 8.9 DEG C.This is because, summer ambient temperature higher, as selected ordinary heat exchanger to be air-cooled changing in summer
Hot device, working medium differs in ordinary heat exchanger and liquefies under air themperature the most in the environment, carries out heat exchange, thus affect pipe
The flowing of road internal working medium.And in winter, selection working medium is R21, the cold junction temperature that can maintain thermoelectric material is relatively low, increases
The generating efficiency of heat-flash electric material.Meanwhile, the standard boiling temperature of selected working medium not should with thermoelectric material cold excessive temperature differentials,
Its reason is, the too low working medium of standard boiling temperature is when end cold with thermoelectric device carries out heat exchange, due to the excessive temperature differentials of heat exchange,
Film boiling in Thermal Performance of Micro Channels pipe may be caused, thus cause the generation of heat transfer deterioration, affect the stability of Thermal Performance of Micro Channels.
This patent micro-channel heat exchanger combines suitable working medium and controls the holding of thermoelectric material cold temperature surely by boiling heat transfer
Determine low temperature, improve generating efficiency and the service life of thermoelectric material.
Claims (4)
1. a waste heat direct electric power generator based on Thermal Performance of Micro Channels, is characterized in that: this TRT, including thermoelectricity material
Material, micro-channel heat exchanger, working medium pump, ordinary heat exchanger and pipeline；Micro-channel heat exchanger, working medium pump and ordinary heat exchanger are logical
Piping series connection communicate, constitute closed loop passage, working medium in closed channel through boiling with liquefy circulate, thermoelectricity material
The cold end face of material is in close contact with the end face of micro-channel heat exchanger.
A kind of waste heat direct electric power generator based on Thermal Performance of Micro Channels the most according to claim 1, is characterized in that: institute
The working medium stated is R30 or R21, and in the microchannel of micro-channel heat exchanger, the cold end of working medium and thermoelectric material efficiently seethes with excitement and changes
Heat, makes the cryogenic conditions that the cold end maintenance of thermoelectric material is stable, it is ensured that conversion efficiency of thermoelectric；The working medium of boiling passes through working medium pump
Heat takes to ordinary heat exchanger carry out heat exchange with environment again and make working medium liquefaction cycle.
A kind of waste heat direct electric power generator based on Thermal Performance of Micro Channels the most according to claim 1, is characterized in that: institute
The micro-channel heat exchanger stated, for copper rectangular thin plate, has some microchannels inside copper rectangular thin plate, and microchannel can basis
Actual application is chosen as circular hole or square hole, and size is determined also according to practical situation.
A kind of waste heat direct electric power generator based on Thermal Performance of Micro Channels the most according to claim 1, is characterized in that: institute
The ordinary heat exchanger stated can select air-cooled heat exchanger, water cooling heat exchanger or ground-coupled heat exchanger according to practical situations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425495.1A CN105897062A (en) | 2016-06-14 | 2016-06-14 | Microchannel heat exchange-based waste-heat direct power generation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610425495.1A CN105897062A (en) | 2016-06-14 | 2016-06-14 | Microchannel heat exchange-based waste-heat direct power generation device |
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| Publication Number | Publication Date |
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| CN105897062A true CN105897062A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610425495.1A Pending CN105897062A (en) | 2016-06-14 | 2016-06-14 | Microchannel heat exchange-based waste-heat direct power generation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452186A (en) * | 2016-10-17 | 2017-02-22 | 中国矿业大学 | Novel subsurface fire heat energy extraction thermoelectric power generation system |
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|---|---|---|---|---|
| JP2004140202A (en) * | 2002-10-18 | 2004-05-13 | Mitsubishi Heavy Ind Ltd | Thermoelectric conversion system |
| CN101778554A (en) * | 2010-01-04 | 2010-07-14 | 北京交通大学 | Radiating system |
| CN103975431A (en) * | 2011-11-04 | 2014-08-06 | 富士通株式会社 | Microchannel cooling device, microchannel cooling system, and electronic instrument |
| CN203813716U (en) * | 2014-05-12 | 2014-09-03 | 内蒙古工业大学 | Nano-fluids-based micro-channel cooling high-power concentrating solar photovoltaic photothermal system |
| CN203813717U (en) * | 2014-05-12 | 2014-09-03 | 内蒙古工业大学 | Nano-fluids-based graphite micro-channel cooling type solar photovoltaic photothermal system |
-
2016
- 2016-06-14 CN CN201610425495.1A patent/CN105897062A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004140202A (en) * | 2002-10-18 | 2004-05-13 | Mitsubishi Heavy Ind Ltd | Thermoelectric conversion system |
| CN101778554A (en) * | 2010-01-04 | 2010-07-14 | 北京交通大学 | Radiating system |
| CN103975431A (en) * | 2011-11-04 | 2014-08-06 | 富士通株式会社 | Microchannel cooling device, microchannel cooling system, and electronic instrument |
| CN203813716U (en) * | 2014-05-12 | 2014-09-03 | 内蒙古工业大学 | Nano-fluids-based micro-channel cooling high-power concentrating solar photovoltaic photothermal system |
| CN203813717U (en) * | 2014-05-12 | 2014-09-03 | 内蒙古工业大学 | Nano-fluids-based graphite micro-channel cooling type solar photovoltaic photothermal system |
Non-Patent Citations (1)
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| 易新，梁仁建: "《现代空调用制冷技术》", 30 June 2003, 北京：机械工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452186A (en) * | 2016-10-17 | 2017-02-22 | 中国矿业大学 | Novel subsurface fire heat energy extraction thermoelectric power generation system |
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Application publication date: 20160824 |
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