CN108054954A - Efficiently quick unidirectional heat transfer temperature difference electricity generation system and method - Google Patents
Efficiently quick unidirectional heat transfer temperature difference electricity generation system and method Download PDFInfo
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- CN108054954A CN108054954A CN201810000973.3A CN201810000973A CN108054954A CN 108054954 A CN108054954 A CN 108054954A CN 201810000973 A CN201810000973 A CN 201810000973A CN 108054954 A CN108054954 A CN 108054954A
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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
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Abstract
A kind of efficiently quick unidirectional heat transfer temperature difference electricity generation system and method, belong to field of heat transfer.System includes heat source successively from down to up（1）, thermo-electric generation element（2）, heat-conducting plate（3）And fluid box（5）.Wherein fluid box（5）Interior hydraulically full working medium（4）, fluid box（5）Bottom be disposed with one piece of heat-conducting plate（3）；Aforesaid liquid case（5）Bottom and heat-conducting plate（3）It is hollowed out up and down so that heat source（1）Pass through fluid box（5）Bottom is hollowed out part and is contacted directly with heat-conducting plate bottom, and part and fluid box are hollowed out further through heat-conducting plate（5）Interior liquid working substance（4）It contacts directly.Working medium inside fluid box forms free convection with the temperature for maintaining thermo-electric generation element cold end relatively stable and relatively low, generates electricity so as to establish the temperature difference continued for some time.The invention can efficiently and rapidly exchange heat, and can avoid frequently replacing working fluid, and need not form forced convertion Xun Huan by additional pump to expend additional electric energy.
Description
Technical field
The present invention relates to a kind of efficiently quick unidirectional heat transfer temperature difference electricity generation system and method, particularly thermoelectric generation are cold
The method for holding high efficiency and heat radiation, belongs to field of heat transfer.
Background technology
Thermo-electric generation is a kind of new generation mode, and mechanical moving element is not required in transfer process, and good fortune is not required to add
Moral drive system, it is compact-sized, it does not shake or noise, safety non-pollution.But there is also it is very important the defects of, generating electricity
The greatest difficulty that thermal gradient energy utilizes in the process is that the temperature difference is too small, and energy density is too low.So the key of thermal gradient energy conversion is to strengthen
Heat and mass technology.
One of thermoelectric generation is it is critical that cold end how to keep stablizing and relatively low temperature（Hot-side temperature phase
To stabilization）, so as at thermo-electric generation element both ends the metastable larger temperature difference in certain time be maintained to generate electricity.Cold end
Radiating mode has a modes such as free convection, air-cooled forced convection and the water cooling of fluid, and the free convection of fluid generally compared with
For that can not ensure heat dissipation effect in the small space of closing, therefore the larger temperature difference of a period of time cannot be maintained；It is air-cooled strong
Compel convection current although heat dissipation effect is better than Natural Heat Convection mode, it is more difficult in the arrangement of small space internal fan, with
And the power consumption of fan itself the shortcomings that being all potential；And the mode of water-cooling, if cold end pump connection liquid box-shaped
Into strong cyclic, for this heat dissipation effect although fabulous, pump is greatly consumption electric energy, and some thermo-electric generation occasion conditions
The cycling of this open type is not allowed for exist；If cold end is only placed in thermo-electric generation without liquid circulation with a fluid box
As low-temperature receiver, the fluid box upper liquid only contacted with thermo-electric generation element is heated rapidly heating for the lower section of element, heat exchange
It is ineffective, cause heat dissipation effect bad, generating effect is undesirable, and fluid box only has enough great talents to have the meaning as low-temperature receiver
Justice, otherwise thermo-electric generation element hot and cold side exists soon without the temperature difference, but fluid box size is too big, and applicability is not also strong.
The content of the invention
It is an object of the invention in order to overcome the above-mentioned deficiencies of the prior art, provide a kind of efficiently quick unidirectional heat transfer temperature
Poor electricity generation system and method.
A kind of efficiently quick unidirectional heat transfer temperature difference electricity generation system, it is characterised in that：Include heat source, the temperature difference successively from bottom to top
Generating element, fluid box；Hydraulically full working medium wherein in fluid box, the bottom of fluid box are disposed with one piece of heat-conducting plate；Above-mentioned liquid
Body bottom portion and heat-conducting plate are hollowed out up and down so that heat source passes through fluid box（5）It is straight with heat-conducting plate bottom that bottom is hollowed out part
Contact is hollowed out part and fluid box further through heat-conducting plate（5）Interior liquid working substance contacts directly.
The electricity-generating method of the efficiently quick unidirectional heat transfer temperature difference electricity generation system, it is characterised in that including procedure below：On
It is close to heat source absorption heat, cold end of the other end as thermo-electric generation element, in being close in the hot junction for stating thermo-electric generation element
Between liquid working substance direct contact heat transfer in the liquid-tank bottom that partly hollows out and heat-conducting plate, with fluid box；Liquid working substance absorbs
Temperature of the heat of thermo-electric generation element cold end to keep cold end relatively low, so as to ensure the temperature of thermo-electric generation element hot and cold side
Difference generates electricity；Since the liquid domain that heat-conducting plate center cut-out surrounds and the cold end of thermo-electric generation element contact directly suction
Heat, therefore the temperature of liquid domain herein is higher than the temperature of liquid working substance in its top fluid box, the different liquid working substance of temperature
Since density contrast is flowed, heated liquid working substance rises, and the liquid working substance of cold conditions drops to thermo-electric generation element cold end table
Face continues to absorb heat, and so cycles, and forms free convection.
Above-mentioned heat-conducting plate side can be provided with hole or slot；The liquid domain temperature that heat-conducting plate center cut-out surrounds at this time is high
The temperature of liquid working substance in fluid box square thereon, the hole or slot that this partially liq working medium is opened by heat-conducting plate side, which enter, leads
Hot plate periphery, and the liquid working substance of top cold conditions drops to thermo-electric generation element cold end naturally along center cut-out in fluid box
Surface continues to absorb heat, and so cycles, preferably forms free convection.So design the heat that can may occur to avoid cut-out
Poly- phenomenon strengthens Effect of Nature Convection.
Aforesaid liquid working medium is the organic working mediums such as water or conduction oil or ethyl alcohol, depending on heat source temperature.So design can
To control the temperature range of thermo-electric generation element cold end.
Above-mentioned thermo-electric generation element is semiconductor temperature differential generating piece or semiconductor chilling plate finished product or semiconductor power generation stack,
Or semiconductor refrigerating pile or the collection finished product of PN junction and printed circuit, so design can expand application range.
The size and shape of aforesaid liquid case can expand according to institute's use occasion adjustment, so design using model
It encloses and controls power generation duration.
In some cases, the part that above-mentioned thermo-electric generation element is contacted between liquid-tank bottom and heat-conducting plate can take
The mode not hollowed out is cooled down, and temperature of the cold side of the power generation is close to fluid box sole arrangement, and so design can simplify difficult processing
Degree, expanded application range.
Above-mentioned heat-conducting plate is metallic plate, such as aluminium sheet or copper coin.
Disturbance device can be increased in aforesaid liquid case, so design can optimize the cooling effect of thermo-electric generation element cold end
Fruit.
Description of the drawings
Fig. 1 is a kind of efficiently quick unidirectional heat transfer temperature difference electricity-generating method schematic diagram（It contacts directly）；
Fig. 2 is a kind of efficiently quick unidirectional heat transfer temperature difference electricity-generating method schematic diagram（Mediate contact）；
Figure label title：1 heat source, 2 thermo-electric generation elements, 3 heat-conducting plates, 4 liquid working substances, 5 fluid boxes.
Specific implementation method
The present invention is further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of efficiently quick unidirectional heat transfer temperature difference electricity generation system and method work in the following manner：
One end of above-mentioned thermoelectric generation film is close to heat source and absorbs heat formation hot junction, and cold end of the other end as thermo-electric generation element is led to
The liquid working substance direct contact heat transfer in the liquid-tank bottom for being close to empty center section and aluminium sheet or copper coin, with fluid box is crossed,
Liquid working substance absorbs temperature of the heat of thermo-electric generation element cold end to keep cold end relatively low, so as to ensure thermo-electric generation member
The temperature difference of part hot and cold side generates electricity；Due to the liquid domain that aluminium sheet or copper coin center cut-out surround and thermo-electric generation element
Cold end contacts directly heat absorption, therefore the temperature of liquid domain herein is higher than the temperature of liquid working substance in its top fluid box, temperature
Since density contrast is flowed, heated liquid working substance rises different liquid working substances, and the liquid working substance of cold conditions drops to the temperature difference
Generating element cold end surface continues to absorb heat, and so cycles, and forms free convection.
As shown in Fig. 2, in some cases, above-mentioned thermo-electric generation element is indirectly with liquid-tank bottom and aluminium sheet or copper coin
Tactile part can take the mode not hollowed out to be cooled down, and temperature of the cold side of the power generation is close to fluid box sole arrangement.
In method shown in Fig. 1, when in aluminium sheet or the perforate of copper coin side or slot, heated liquid working substance can be by being opened
Hole or slot enter aluminium sheet or copper coin periphery in fluid box, and the liquid working substance of top cold conditions drops to temperature difference hair naturally in fluid box
Electric device cold end surface continues to absorb heat, and so cycles, forms better free convection.
Claims (8)
1. a kind of heat source is in the efficient quick unidirectional heat transfer temperature difference electricity generation system of lower section, it is characterised in that：
Include heat source successively from down to up（1）, thermo-electric generation element（2）, heat-conducting plate（3）, liquid working substance（4）And fluid box
（5）；Wherein fluid box（5）Interior hydraulically full working medium（4）, fluid box（5）Bottom be disposed with one piece of heat-conducting plate（3）；
Aforesaid liquid case（5）Bottom and heat-conducting plate（3）It is hollowed out up and down so that heat source（1）Pass through fluid box（5）Bottom is hollowed out
Part is contacted directly with heat-conducting plate bottom, and part and fluid box are hollowed out further through heat-conducting plate（5）Interior liquid working substance（4）Directly
Contact.
2. efficiently quick unidirectional heat transfer temperature difference electricity generation system according to claim 1, it is characterised in that：Above-mentioned heat-conducting plate
（3）Side is provided with hole or slot.
3. efficiently quick unidirectional heat transfer temperature difference electricity generation system according to claim 1, it is characterised in that：Aforesaid liquid working medium
（4）It is water or conduction oil or ethyl alcohol or organic working medium.
4. efficiently quick unidirectional heat transfer temperature difference electricity generation system according to claim 1, it is characterised in that：Above-mentioned thermo-electric generation
Element（2）It is semiconductor temperature differential generating piece or semiconductor chilling plate finished product or semiconductor power generation stack or semiconductor refrigerating pile,
Or the collection finished product of PN junction and printed circuit.
5. efficiently quick unidirectional heat transfer temperature difference electricity generation system according to claim 1, it is characterised in that：Above-mentioned heat-conducting plate
（3）For metallic plate.
6. efficiently quick unidirectional heat transfer temperature difference electricity generation system according to claim 1, it is characterised in that：Aforesaid liquid case
（5）Disturbance device is inside installed.
7. the electricity-generating method of efficiently quick unidirectional heat transfer temperature difference electricity generation system according to claim 1, it is characterised in that including
Procedure below：
Above-mentioned thermo-electric generation element（2）Hot junction be close to heat source（1）Heat is absorbed, the other end is as thermo-electric generation element（2）'s
Cold end, the fluid box hollowed out by being close to center section（5）Bottom and heat-conducting plate（3）, with fluid box（5）Interior liquid working substance
（4）Direct contact heat transfer；
Liquid working substance（4）Absorb thermo-electric generation element（2）Temperature of the heat of cold end to keep cold end relatively low, so as to ensure
Thermo-electric generation element（2）The temperature difference of hot and cold side generates electricity；Due to heat-conducting plate（3）Liquid working substance that center cut-out surrounds with
Thermo-electric generation element（2）Cold end contact directly heat absorption, therefore the temperature of liquid domain herein is higher than liquid in its top fluid box
Body working medium（4）Temperature, the different liquid working substance of temperature（4）Since density contrast is flowed, heated liquid working substance（4）On
It rises, the liquid working substance of cold conditions（4）Drop to thermo-electric generation element（2）Cold end surface continues to absorb heat, and so cycles, and forms nature pair
Stream.
8. efficiently quick unidirectional heat transfer temperature difference electricity-generating method according to claim 7, it is characterised in that including procedure below：
Above-mentioned heat-conducting plate（3）Side is provided with hole or slot；
Heat-conducting plate（3）The liquid domain temperature that center cut-out surrounds is higher than liquid working substance in its top fluid box（4）Temperature,
This partially liq working medium（4）The hole or slot opened by heat-conducting plate side enter heat-conducting plate（3）Periphery, and fluid box（5）On interior
The liquid working substance of square cold conditions（4）Drop to thermo-electric generation element cold end surface naturally along center cut-out to continue to absorb heat, so
Xun Huan, preferably forms free convection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810000973.3A CN108054954A (en) | 2018-01-02 | 2018-01-02 | Efficiently quick unidirectional heat transfer temperature difference electricity generation system and method |
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| CN201810000973.3A CN108054954A (en) | 2018-01-02 | 2018-01-02 | Efficiently quick unidirectional heat transfer temperature difference electricity generation system and method |
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| CN108054954A true CN108054954A (en) | 2018-05-18 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259447U (en) * | 2011-08-29 | 2012-05-30 | 国研高能（北京）稳态传热传质技术研究院有限公司 | Novel heat radiation assembly with thermoelectric power generation semiconductor module |
| CN203911806U (en) * | 2014-04-11 | 2014-10-29 | 兰州理工大学 | Yellow sand thermal-arrest semiconductor thermoelectric power generation system |
| KR20170082774A (en) * | 2016-01-07 | 2017-07-17 | 주식회사 브리콘 | Thermoelectric generation system using solar heat collector |
| CN107395066A (en) * | 2017-07-12 | 2017-11-24 | 东南大学 | A kind of portable water processed for high altitude localities and electric power storage integrating device |
| CN207753637U (en) * | 2018-01-02 | 2018-08-21 | 南京航空航天大学 | Efficiently quick unidirectional heat transfer temperature difference electricity generation system |
-
2018
- 2018-01-02 CN CN201810000973.3A patent/CN108054954A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202259447U (en) * | 2011-08-29 | 2012-05-30 | 国研高能（北京）稳态传热传质技术研究院有限公司 | Novel heat radiation assembly with thermoelectric power generation semiconductor module |
| CN203911806U (en) * | 2014-04-11 | 2014-10-29 | 兰州理工大学 | Yellow sand thermal-arrest semiconductor thermoelectric power generation system |
| KR20170082774A (en) * | 2016-01-07 | 2017-07-17 | 주식회사 브리콘 | Thermoelectric generation system using solar heat collector |
| CN107395066A (en) * | 2017-07-12 | 2017-11-24 | 东南大学 | A kind of portable water processed for high altitude localities and electric power storage integrating device |
| CN207753637U (en) * | 2018-01-02 | 2018-08-21 | 南京航空航天大学 | Efficiently quick unidirectional heat transfer temperature difference electricity generation system |
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