CN102594219A - Urban asphalt pavement thermoelectric generation system - Google Patents
Urban asphalt pavement thermoelectric generation system Download PDFInfo
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- CN102594219A CN102594219A CN2012100426927A CN201210042692A CN102594219A CN 102594219 A CN102594219 A CN 102594219A CN 2012100426927 A CN2012100426927 A CN 2012100426927A CN 201210042692 A CN201210042692 A CN 201210042692A CN 102594219 A CN102594219 A CN 102594219A
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Abstract
The invention discloses an urban asphalt pavement thermoelectric generation system. The urban asphalt pavement thermoelectric generation system is characterized in that a water flow pipe network is distributed in an urban asphalt pavement, the water flow pipe network is connected in parallel with a water source pipeline which is laid below the urban asphalt pavement, and a plurality of thermoelectric generation modules are distributed between the water flow pipe network and the urban asphalt pavement. The urban asphalt pavement thermoelectric generation system disclosed by the invention can acquire the temperature of the pavement through the thermoelectric generation modules, play a role in balancing the temperature of the pavement and the environmental temperature and improve the durability of the pavement structure against the temperature influence and the using performances; and simultaneously, thermoelectric generation has the advantages of reliable performances, no pollution, no noise and sustainable use, and the generated electric energy can also be used as supplement for power utilization of road lighting, traffic lights and other municipal works.
Description
Technical field
The present invention relates to a kind of road surface generation technology, especially a kind of city bituminous pavement thermo-electric generation system.
Background technology
The thermo-electric generation technology is to utilize Seebeck effect heat energy to be converted into the new-generation technology of electric energy.In recent years, along with the continuous research and development of high performance thermoelectric material, the thermo-electric generation technology is constantly used and is promoted in every field, like the utilization of spaceborne radioisotope thermoelectric generator, residual heat of tail gas of automobile recovery system, ocean thermal energy etc.At present, this technology is only used in specific high-end technology field, and the heat energy utilization field does not still have the application precedent on the road surface.
Summary of the invention
The objective of the invention is for overcoming the deficiency of above-mentioned prior art; A kind of city bituminous pavement thermo-electric generation system is provided; This system utilizes the thermo-electric generation effect, through temperature-difference power generation module, the temperature difference of bituminous pavement and water is changed into electric energy utilization; Weaken the influence of temperature effect road pavement simultaneously, improve the serviceability and the durability on road surface.
For realizing above-mentioned purpose, the present invention adopts following technical proposals:
A kind of city bituminous pavement thermo-electric generation system is laid the current pipe network in the bituminous pavement of city, the current pipe network is parallel on the water pipeline of laying under the bituminous pavement of city, between current pipe network and city bituminous pavement, lays some temperature-difference power generation modules.
Said water source is running water or underground water.
The present invention is through laying the current pipe network in the bituminous pavement of city; Water at low temperature in the current pipe network is utilized the thermo-electric generation of the low water temperature formation of bituminous pavement high temperature and water pipe from city tap-water pipeline, underground water or other water sources (this paper is that example describes with the running water).
Bituminous pavement directly receives the influence of natural causes such as solar radiation, temperature, wind-force as being directly exposed to the building structure under the natural environment, can accept to put aside a large amount of road surface heat energy, can reach comparatively extreme pavement temperature value in winter in summer.This will directly have influence on the serviceability and the durability (the too high meeting of pavement temperature causes pavement track, and pavement temperature is crossed to hang down and can be caused cold cracking) on road surface.This technology is that road pavement heat energy utilizes, and weakens the influence of temperature effect road pavement simultaneously, improves the serviceability and the durability on road surface.
The current pipe network is set in asphalt pavement structure; Link to each other with the water supply pipe (this sentences water supply pipe is example) that urban road is divided into; The circulating water of quoting wherein gets into the road surface pipe network, is the media balance bituminous pavement temperature and the ambient temperature of transferring heat energy with water, and the specific contact-making surface that formation simultaneously has the big temperature difference is in order to thermo-electric generation; Flow back to original city tap-water system behind the transmission that circulating water participate in to be accomplished heat energy and the thermo-electric generation, form and circulate.
The technical essential of bituminous pavement thermo-electric generation technological core is: the design and the selection of hot junction and cold junction in the thermo-electric generation system.The hot tap-water of this technology after with the heating of bituminous pavement or the bituminous pavement of flowing through is the hot junction, is cold junction with the running water of buried underground normal temperature or low temperature.
This bituminous pavement thermo-electric generation system comprises three major parts: effective electricity generation system that is connected, lays temperature-difference power generation module formation at ad-hoc location of the water supply pipe that the current pipe network of laying in the asphalt pavement structure, current pipe network and urban road are laid down.
1) laying of current pipe network
Consider the distribution of heat energy in the structure of pitch the inside and of the influence of current pipe network to the asphalt pavement structure serviceability, the current pipe network can be laid in following 10cm degree of depth place, road surface (during enforcement need first according to concrete pavement structure type make an experiment, theoretical validation).
Water temperature was advisable with the asphalt pavement structure temperature is consistent when the length of current pipe network, arrangement form flowed out with current.Need to consider flow rate of water flow, the function division of urban road surfaces and the influence of road pavement structure serviceability etc.
Being advisable with pavement, the less zone, track of the volume of traffic in the position of water flow pipes network arrangements, is regional choice criteria to bear less traffic load.
The current pipe network is the important and link that is vulnerable to destroy most in the whole bituminous pavement thermo-electric generation system, so the selection of water flow pipes net materials and construction operation phase are extremely important to its protection.The current pipe network should adopt the material with high thermal conductivity ability, higher-strength and durability.
In addition, the asphalt that the asphalt pavement structure construction time can be used adulterating agent such as admixture graphite to be improving the heat conductivility of structure, and then improves the efficient of thermo-electric generation.
2) current pipe network and running water, caliduct is connected
The setting of coupling part will be considered the characteristics of the layout of city tap-water pipeline: pipeline is parallel to road axis and arranges; Pipeline be usually placed in the pavement or the less track of driving a vehicle under; Buried depth of pipeline is usually about 2m.Influence to reduce running water system is a setting principle.
Control Circulation water the enter valve of bituminous pavement pipe network in coupling part need be arranged on above or easy-operating position, road surface and note protection; Trunk line and circulating line caliber difference, hydraulic pressure difference will be coordinated, and should carry out the coupling part simultaneously and prevent handling of seepage.
3) laying of temperature-difference power generation module
No matter summer or winter; All there is bigger temperature difference between asphalt pavement structure and the running water; This temperature difference should not realize that this technology is solved through the method for recirculated water in the pipeline being introduced current pipe network in the asphalt pavement structure through the shallow embedding water supply pipe.When recirculated water had just got into asphalt pavement structure, both had bigger temperature contrast, can receive bituminous pavement heating or cooling then, and recirculated water flows back to water supply pipe.Therefore, temperature-difference power generation module mainly is arranged in lower area: current pipe network leading portion, recirculated water and the bigger zone of the bituminous pavement temperature difference can directly be attached to temperature-difference power generation module on the water pipe.
Quantity and density that temperature-difference power generation module is laid can be confirmed according to voltage, actual road surface situation and the economy of road electrical appliance.Temperature-difference power generation module is existing technology, can on market, buy, and repeats no more at this.
It is the most important link of whole generating module that the thermo-electric generation material is selected, and should select good economy performance, new material that conversion efficiency of thermoelectric is high for use.The low-temperature electricity-generating material that has higher figure of merit in the market is Bi2Te3-Bi2Se3 solid solution (N type) and Bi2Te3-Sb2Te3 solid solution (P type), the TEG1-127-2.8-3.5-200 type thermo-electric generation assembly of producing like Guangdong Fuxin Electronic Technology Co., Ltd. etc.But the more efficiently thermo-electric generation material novel along with the progress of science and technology can constantly occur, and upgrade in time and adopt the new material new technology.
Temperature-difference power generation module need be provided with electrical storage device, regulates the use of thermo-electric generation electric energy, and direct current alternating current conversion equipment also need be set if desired, and the electric energy that thermo-electric generation produces is a direct current.
The invention has the beneficial effects as follows; This bituminous pavement thermo-electric generation technology is gathered through temperature-difference power generation module road pavement temperature; Can play the effect of neutrodyne circuit surface temperature and ambient temperature; Improve the durability and the serviceability of pavement structure temperature influence, thermo-electric generation has dependable performance, pollution-free, noiselessness, the continuous advantage of using forever simultaneously, and the electric energy of generation also can be used as replenishing of municipal works electricity consumptions such as road lighting, traffic lights.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 is the temperature-difference power generation module organigram;
Fig. 3 is that the water flow pipes network plane is laid sketch map;
Fig. 4 is that the current pipe network is connected sketch map with trunk line;
Fig. 5 is that temperature-difference power generation module is arranged sketch map;
1. electric conductors wherein, 2. heat conductive insulating protecting sheathing, 3. thermal insulation protection shell, 4. contact hot junction, 5. contact cold junction, 8. water supply pipe, 10. valve, 12. temperature-difference power generation modules, 13 city bituminous pavements, 14. current pipe networks.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Shown in Fig. 1-5; A kind of city bituminous pavement thermo-electric generation system; In city bituminous pavement 13, lay current pipe network 14; Current pipe network 14 is parallel on the water pipeline of 13 times layings of city bituminous pavement, on the current pipe network 14 of temperature difference maximum region between current pipe network 14 and the city bituminous pavement 13, is provided with some temperature-difference power generation modules 12.Temperature-difference power generation module 12 links to each other with power consumption equipment through circuit.
The water source is running water 8 or heating installation or underground water, and perhaps other are positioned at the liquid of urban pavement below.
The technical essential of bituminous pavement thermo-electric generation technological core is: the design and the selection of hot junction and cold junction in the thermo-electric generation system.The hot tap-water of this technology after with the heating of bituminous pavement or the bituminous pavement of flowing through is the hot junction, is cold junction with the running water of buried underground normal temperature or low temperature.
This bituminous pavement thermo-electric generation system comprises three major parts: effective electricity generation system that is connected, lays temperature-difference power generation module 12 formation at ad-hoc location of the water supply pipe 8 that the current pipe network of laying in the asphalt pavement structure 14, current pipe network 14 and urban road are laid down.
1) laying of current pipe network 14
As shown in Figure 3; Consider the distribution of heat energy in the structure of pitch the inside and the influence of 14 pairs of asphalt pavement structure serviceabilities of current pipe network, current pipe network 14 can be laid in following 10cm degree of depth place, road surface (during enforcement need first according to concrete pavement structure type make an experiment, theoretical validation).
Water temperature was advisable with the asphalt pavement structure temperature is consistent when the length of current pipe network 14, arrangement form flowed out with current.Need to consider flow rate of water flow, the function division of urban road surfaces and the influence of road pavement structure serviceability etc.
Being advisable with pavement, the less zone, track of the volume of traffic in the position that current pipe network 14 is arranged, is regional choice criteria to bear less traffic load.
In addition, the asphalt that the asphalt pavement structure construction time can be used adulterating agent such as admixture graphite to be improving the heat conductivility of structure, and then improves the efficient of thermo-electric generation.
2) current pipe network 14 and water supply pipe is connected
As shown in Figure 4, the setting of coupling part will be considered the characteristics of the layout of city tap-water pipeline 8: pipeline is parallel to road axis and arranges; Pipeline be usually placed in the pavement or the less track of driving a vehicle under; Buried depth of pipeline is usually about 2m.Influence to reduce running water system is a setting principle.
A technical essential of paying special attention to when the coupling part is provided with is: recirculated water is not directly to flow back to water supply pipe 8; But one section parallel process of regulating temperature is arranged; Recirculated water after the bituminous pavement of flowing through in this process intensification or the cooling and the water in the water supply pipe have uniform temperature poor, can arrange that temperature-difference power generation module 12 is used for generating electricity.
Control Circulation water the enter valve 10 of bituminous pavement pipe network in coupling part need be arranged on above or easy-operating position, road surface and note protection; Trunk line and circulating line caliber difference, hydraulic pressure difference will be coordinated, and should carry out the coupling part simultaneously and prevent handling of seepage.
3) laying of temperature-difference power generation module
No matter summer or winter; All there is bigger temperature difference between asphalt pavement structure and the running water; This temperature difference should not realize that the present invention solves through the method for recirculated water in the pipeline being introduced current pipe network in the asphalt pavement structure through the shallow embedding water supply pipe.When recirculated water had just got into asphalt pavement structure, both had bigger temperature contrast, can receive bituminous pavement heating or cooling then, before recirculated water flows back to water supply pipe 8, can have bigger temperature contrast with the water in the pipeline again.Therefore, temperature-difference power generation module has two layout area: the one, and current pipe network 14 leading portions, recirculated water and the bigger zone of the bituminous pavement temperature difference can directly be attached to temperature-difference power generation module 12 on the water pipe; The 2nd, parallel with water supply pipe before recirculated water flows back to, there is the zone of the big temperature difference in both, contact water supply pipe 8 tube walls while temperature-difference power generation module 12 need contact current pipe network 14 recirculated water tube walls.
As shown in Figure 5, quantity and density that temperature-difference power generation module 12 is laid can be confirmed according to voltage, actual road surface situation and the economy of road electrical appliance.As shown in Figure 2, temperature-difference power generation module 12 is existing technology, can on market, buy, and it comprises electric conductor 1, heat conductive insulating protecting sheathing 2, and thermal insulation protection shell 3, contact hot junction 4, contact cold junction 5 is in this its detailed construction that repeats no more.
It is the most important link of whole generating module that the thermo-electric generation material is selected, and should select good economy performance, new material that conversion efficiency of thermoelectric is high for use.The low-temperature electricity-generating material that has higher figure of merit in the market is Bi
2Te
3-Bi
2Se
3Solid solution (N type) and Bi
2Te
3-Sb
2Te
3Solid solution (P type), the TEG1-127-2.8-3.5-200 type thermo-electric generation assembly of producing like Guangdong Fuxin Electronic Technology Co., Ltd. etc.But the more efficiently thermo-electric generation material novel along with the progress of science and technology can constantly occur, and upgrade in time and adopt the new material new technology.
Temperature-difference power generation module 12 need be provided with electrical storage device, regulates the use of thermo-electric generation electric energy, and direct current alternating current conversion equipment also need be set if desired, and the electric energy that thermo-electric generation produces is a direct current.
Though the above-mentioned accompanying drawing specific embodiments of the invention that combines is described; But be not restriction to protection range of the present invention; One of ordinary skill in the art should be understood that; On the basis of technical scheme of the present invention, those skilled in the art need not pay various modifications that creative work can make or distortion still in protection scope of the present invention.
Claims (2)
1. city bituminous pavement thermo-electric generation system; It is characterized in that; In the bituminous pavement of city, lay the current pipe network, the current pipe network is parallel on the water pipeline of laying under the bituminous pavement of city, on the contact-making surface of bituminous pavement and current pipe network, lays some temperature-difference power generation modules.
2. city as claimed in claim 1 bituminous pavement thermo-electric generation system is characterized in that, said water source is running water or other underground water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100426927A CN102594219A (en) | 2012-02-24 | 2012-02-24 | Urban asphalt pavement thermoelectric generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100426927A CN102594219A (en) | 2012-02-24 | 2012-02-24 | Urban asphalt pavement thermoelectric generation system |
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| CN102594219A true CN102594219A (en) | 2012-07-18 |
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| CN2012100426927A Pending CN102594219A (en) | 2012-02-24 | 2012-02-24 | Urban asphalt pavement thermoelectric generation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396890A (en) * | 2019-07-25 | 2019-11-01 | 长安大学 | A kind of thermo-electric generation asphalt pavement structure and its making technique |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020047489A1 (en) * | 1999-02-12 | 2002-04-25 | Gerrit Oudakker | Solid state energy generator |
| CN1403401A (en) * | 2002-10-11 | 2003-03-19 | 武汉理工大学 | Conducting asphalt concrete and its prepn process |
| CN102055379A (en) * | 2009-10-28 | 2011-05-11 | 李和翼 | Semiconductor thermoelectric power generation tube |
| CN202424589U (en) * | 2012-02-24 | 2012-09-05 | 山东大学 | Urban asphalt pavement temperature difference power generating system |
-
2012
- 2012-02-24 CN CN2012100426927A patent/CN102594219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020047489A1 (en) * | 1999-02-12 | 2002-04-25 | Gerrit Oudakker | Solid state energy generator |
| CN1403401A (en) * | 2002-10-11 | 2003-03-19 | 武汉理工大学 | Conducting asphalt concrete and its prepn process |
| CN102055379A (en) * | 2009-10-28 | 2011-05-11 | 李和翼 | Semiconductor thermoelectric power generation tube |
| CN202424589U (en) * | 2012-02-24 | 2012-09-05 | 山东大学 | Urban asphalt pavement temperature difference power generating system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396890A (en) * | 2019-07-25 | 2019-11-01 | 长安大学 | A kind of thermo-electric generation asphalt pavement structure and its making technique |
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Application publication date: 20120718 |