CN102545720B - Generation system using temperature difference between city asphalt pavement and underground water source pipeline - Google Patents

Generation system using temperature difference between city asphalt pavement and underground water source pipeline Download PDF

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Publication number
CN102545720B
CN102545720B CN201210042849.6A CN201210042849A CN102545720B CN 102545720 B CN102545720 B CN 102545720B CN 201210042849 A CN201210042849 A CN 201210042849A CN 102545720 B CN102545720 B CN 102545720B
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water
temperature
pipe network
pavement
pipeline
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CN102545720A (en
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姚占勇
李帅
张堃
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Shandong University
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Shandong University
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Abstract

The invention discloses a generation system using the temperature difference between a city asphalt pavement and an underground water source pipeline. A water flow pipe network is distributed in the city asphalt pavement and is connected in parallel with the water source pipeline paved under the city asphalt pavement. And one part of a backflow water end of the water flow pipe network is wound on the water source pipeline. A temperature difference generation module is arranged between the water flow pipe network and the city asphalt pavement, and the temperature difference generation module is arranged on an area with a large temperature difference of the connection part of the water flow pipe network and the water source pipeline. According to the generation system disclosed by the invention, the pavement temperature and the environment temperature can be balanced by collecting the pavement temperature through the temperature difference generation modules, so that the durability and the using property of a pavement structure, which are influenced by the temperature, are improved. Meanwhile, temperature difference generation has the advantages of reliable property, no pollution, no noise and sustainable use. Generated electric energy further can be used as supplements of power utilization of municipal works, such as roadway illumination, and traffic lights.

Description

Utilize Urban Asphalt Pavement and underground water source pipeline thermo-electric generation system
Technical field
The present invention relates to a kind of road surface generation technology, especially a kind of Urban Asphalt Pavement and underground water source pipeline thermo-electric generation system of utilizing.
Background technology
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, thermo-electric generation technology is constantly applied and is promoted in every field, as utilization of spaceborne radiosotope thermoelectric generator, residual heat of tail gas of automobile recovery system, ocean thermal energy etc.At present, this technology is only applied in specific high-end technology field, in heat energy utilization field, road surface, there is no application precedent.
Summary of the invention
The object of the invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of Urban Asphalt Pavement and underground water source pipeline thermo-electric generation system of utilizing is provided, this system is utilized thermo-electric generation effect, pass through temperature-difference power generation module, the temperature difference of the running water that circulates under bituminous pavement and urban road is changed into electric energy utilization, weaken the impact of temperature effect road pavement simultaneously, improve serviceability and the durability on road surface.
For achieving the above object, the present invention adopts following technical proposals:
A kind of Urban Asphalt Pavement and underground water source pipeline thermo-electric generation system of utilizing, in Urban Asphalt Pavement, lay current pipe network, current pipe network is parallel on the water pipeline of laying under Urban Asphalt Pavement, and a backflow water end (W.E.) part for current pipe network is wrapped on water pipeline, between current pipe network and Urban Asphalt Pavement and on current pipe network and water pipeline coupling part contact-making surface, be respectively equipped with some temperature-difference power generation modules.
It is online that described temperature-difference power generation module is arranged at respectively in current pipe network the water flow pipes of recirculated water and the larger region of the bituminous pavement temperature difference, and the recirculation water end of current pipe network is divided and is wrapped on water pipeline region, and this temperature-difference power generation module contacts with the backflow water end (W.E.) tube wall of current pipe network on one side, and another side contacts with water pipeline tube wall.
The present invention by laying current pipe network in Urban Asphalt Pavement, water at low temperature in current pipe network is from city tap-water pipeline, underground water or other water sources (take herein running water describe for example), the thermo-electric generation that utilizes the low water temperature of bituminous pavement high temperature and water pipe to form.
Bituminous pavement, as the building structure being directly exposed under natural environment, is directly subject to the impact of the natural causes such as solar radiation, temperature, wind-force, can accept to put aside a large amount of road surface heat energy, in winter in summer, can reach comparatively extreme pavement temperature value.This will directly have influence on serviceability and the durability (the too high meeting of pavement temperature causes pavement track, and the too low meeting of pavement temperature causes cold cracking) on road surface.This technology is that road pavement heat energy utilizes, and weakens the impact of temperature effect road pavement simultaneously, improves serviceability and the durability on road surface.
Current pipe network is set in asphalt pavement structure, the water supply pipe of dividing into urban road is connected, the circulating water of quoting wherein enters road surface pipe network, medium balance bituminous pavement temperature and ambient temperature that the water of take is transferring heat energy, the specific contact-making surface that formation has the larger temperature difference is simultaneously in order to thermo-electric generation, circulating water has participated in flowing back to original city tap-water system after the transmission of heat energy and thermo-electric generation, forms circulation.
The technical essential of bituminous pavement temperature difference generation technology core is: design and the selection of hot junction and cold junction in thermo-electric generation system.The hot tap-water that this technology be take after the heating of bituminous pavement or the bituminous pavement of flowing through is hot junction, and the running water of buried underground normal temperature or low temperature of take is cold junction.
This asphalt pavement thermoelectric 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 current pipe network of laying in asphalt pavement structure, current pipe network and the water supply pipe of laying under urban road.
1) laying of current pipe network
Consider distribution and the current pipe network impact on asphalt pavement structure serviceability of heat energy in the structure of pitch the inside, current pipe network can be laid in the following 10cm depth in road surface (during enforcement, need elder generation according to concrete Pavement Structure test, theoretical validation).
When the length of current pipe network, arrangement form flow out with current, water temperature is advisable with asphalt pavement structure temperature is consistent.Need to consider flow rate of water flow, the function division of urban road surfaces and the impact of road pavement structure serviceability etc.
Being advisable with pavement, region, track that the volume of traffic is less in the position of water flow pipes network arrangements, take and bear less traffic load as region choice criteria.
Current pipe network is important in whole asphalt pavement thermoelectric generation system and is vulnerable to the link destroyed most, thus the selection of water flow pipes net materials and the construction operation phase extremely important to its protection.Current pipe network should adopt the material with high thermal conductivity energy, higher-strength and durability.
In addition, during asphalt pavement structure construction, can use the asphalt of the adulterating agents such as admixture graphite to improve the heat conductivility of structure, and then improve the efficiency of thermo-electric generation.
2) current pipe network and running water, caliduct is connected
The setting of coupling part will be considered the feature of the layout of city tap-water pipeline: pipeline is parallel to road axis and arranges; Pipeline is usually placed in pavement or drives a vehicle under less track; Buried depth of pipeline is conventionally in 2m left and right.Take that to reduce the impact of running water system be setting principle.
A technical essential of paying special attention to when coupling part arranges is: recirculated water not directly flows back to water supply pipe, but there is one section of parallel process that regulates temperature, recirculated water and the water in water supply pipe after the bituminous pavement of flowing through in this process intensification or cooling have uniform temperature poor, can arrange that temperature-difference power generation module is used for generating electricity.
Controlled 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; main pipeline and circulating line caliber difference, hydraulic pressure difference will be coordinated, and should carry out coupling part simultaneously and prevent handling of seepage.
3) laying of temperature-difference power generation module
No matter summer or winter, between asphalt pavement structure and running water, all there is larger temperature difference, this temperature difference should not realize by shallow embedding water supply pipe, and this technology is solved by recirculated water in pipeline being introduced to the method for current pipe network in asphalt pavement structure.When recirculated water has just entered asphalt pavement structure, both have larger temperature contrast, then can be subject to bituminous pavement heating or cooling, and recirculated water flows back to before water supply pipe, again can with pipeline in water there is larger temperature contrast.Therefore, temperature-difference power generation module has two layout area: the one, and current pipe network leading portion, the region that recirculated water and the bituminous pavement temperature difference are larger, can directly be attached to temperature-difference power generation module on water pipe; The 2nd, parallel with water supply pipe before recirculated water flows back to, the region of the larger temperature difference of both existence, contacts water supply pipe tube wall while temperature-difference power generation module need contact current pipe network circulating water pipe wall.
Quantity and density that temperature-difference power generation module is laid can be determined according to the voltage of road electrical appliance, actual road surface situation and economy.Temperature-difference power generation module is existing technology, can on market, buy, and does not repeat them here.
It is the most important link of whole electricity generation module that thermo-electric generation material is selected, and should select good economy performance, new material that conversion efficiency of thermoelectric is high.The low-temperature electricity-generating material in the market with higher figure of merit 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 as Guangdong Fuxin Electronic Technology Co., Ltd. etc.But the more efficient thermo-electric generation material novel along with scientific and technological progress can constantly occur, upgrade in time and adopt new material new technology.
Temperature-difference power generation module need arrange electrical storage device, regulates the use of thermo-electric generation electric energy, if need to also need to arrange direct current alternating current conversion equipment, the electric energy that thermo-electric generation produces is direct current.
The invention has the beneficial effects as follows, this bituminous pavement temperature difference generation technology gathers by temperature-difference power generation module road pavement temperature, can play the effect of neutrodyne circuit surface temperature and ambient temperature, improve durability and the serviceability of pavement structure temperature influence, simultaneously thermo-electric generation has dependable performance, pollution-free, noiselessness, the continuous advantage of using forever, and the electric energy of generation also can be used as supplementing of the municipal works electricity consumptions such as road lighting, traffic lights.
Accompanying drawing explanation
Fig. 1 structural representation of the present invention;
Fig. 2 is temperature-difference power generation module organigram;
Fig. 3 is that water flow pipes network plane is laid schematic diagram;
Fig. 4 is current pipe network and main pipeline connection diagram;
Fig. 5 is that temperature-difference power generation module is arranged schematic diagram;
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, 11. backflow water end (W.E.)s, 12. temperature-difference power generation modules, 13 Urban Asphalt Pavements, 14. current pipe networks.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As Figure 1-5, a kind of urban asphalt pavement thermoelectric generation system, at the interior laying current of Urban Asphalt Pavement 13 pipe network 14, current pipe network 14 is parallel on the water pipeline of 13 times layings of Urban Asphalt Pavement, and backflow water end (W.E.) 11 parts for current pipe network 14 are wrapped on water pipeline, between current pipe network 14 and Urban Asphalt Pavement 13 and in current pipe network 14 and water pipeline coupling part temperature difference maximum region, be respectively equipped with some temperature-difference power generation modules 12.Temperature-difference power generation module 12 is connected with power consumption equipment by circuit.
Temperature-difference power generation module 12 is arranged at respectively on the current pipe network 14 of the interior recirculated water of current pipe network 14 and Urban Asphalt Pavement 13 temperature difference maximum regions, and backflow water end (W.E.) 11 parts of current pipe network 14 are wrapped on water pipeline region, and this temperature-difference power generation module 12 contacts with backflow water end (W.E.) 11 tube walls of current pipe network 14 on one side, and another side contacts with water pipeline tube wall.
Water source in the present invention is running water or heating installation or underground water.This sentences running water is example explanation.Other water sources are similar in this, repeat no more.
Urban Asphalt Pavement 13, as being directly exposed to the building structure under natural environment, is directly subject to the impact of the natural causes such as solar radiation, temperature, wind-force, can accept to put aside a large amount of road surface heat energy, in winter in summer, can reach comparatively extreme pavement temperature value.This will directly have influence on serviceability and the durability (the too high meeting of pavement temperature causes pavement track, and the too low meeting of pavement temperature causes cold cracking) on road surface.This technology is that road pavement heat energy utilizes, and weakens the impact of temperature effect road pavement simultaneously, improves serviceability and the durability on road surface.
At the interior current pipe network 14 that arranges of Urban Asphalt Pavement 13, the water supply pipe 8 of dividing into urban road is connected, the circulating water of quoting wherein enters road surface pipe network, medium balance bituminous pavement temperature and ambient temperature that the water of take is transferring heat energy, the specific contact-making surface that formation has the larger temperature difference is simultaneously in order to thermo-electric generation, circulating water has participated in flowing back to original city tap-water system after the transmission of heat energy and thermo-electric generation, forms circulation.
The technical essential of bituminous pavement temperature difference generation technology core is: design and the selection of hot junction and cold junction in thermo-electric generation system.The hot tap-water that this technology be take after the heating of bituminous pavement or the bituminous pavement of flowing through is hot junction, and the running water of buried underground normal temperature or low temperature of take is cold junction.
This asphalt pavement thermoelectric 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 current pipe network 14, the current pipe network 14 of laying in asphalt pavement structure and the water supply pipe 8 of laying under urban road.
1) laying of current pipe network 14
As shown in Figure 3, consider distribution and current pipe network 14 impact on asphalt pavement structure serviceability of heat energy in the structure of pitch the inside, current pipe network 14 can be laid in the following 10cm depth in road surface (during enforcement, need elder generation according to concrete Pavement Structure test, theoretical validation).
When the length of current pipe network 14, arrangement form flow out with current, water temperature is advisable with asphalt pavement structure temperature is consistent.Need to consider flow rate of water flow, the function division of urban road surfaces and the impact of road pavement structure serviceability etc.
Being advisable with pavement, region, track that the volume of traffic is less in the position that current pipe network 14 is arranged, take and bear less traffic load as region choice criteria.
Current pipe network 14 is important in whole asphalt pavement thermoelectric generation system and is vulnerable to the link destroyed most, thus the selection of water flow pipes net materials and the construction operation phase extremely important to its protection.Current pipe network should adopt the material with high thermal conductivity energy, higher-strength and durability.
In addition, during asphalt pavement structure construction, can use the asphalt of the adulterating agents such as admixture graphite to improve the heat conductivility of structure, and then improve the efficiency 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 feature of the layout of city tap-water pipeline 8: pipeline is parallel to road axis and arranges; Pipeline is usually placed in pavement or drives a vehicle under less track; Buried depth of pipeline is conventionally in 2m left and right.Take that to reduce the impact of running water system be setting principle.
A technical essential of paying special attention to when coupling part arranges is: recirculated water not directly flows back to water supply pipe 8, but there is one section of parallel process that regulates temperature, recirculated water and the water in water supply pipe after the bituminous pavement of flowing through in this process intensification or cooling have uniform temperature poor, can arrange that temperature-difference power generation module 12 is used for generating electricity.
Controlled 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; main pipeline and circulating line caliber difference, hydraulic pressure difference will be coordinated, and should carry out coupling part simultaneously and prevent handling of seepage.
3) laying of temperature-difference power generation module
No matter summer or winter, between asphalt pavement structure and running water, all there is larger temperature difference, this temperature difference should not realize by shallow embedding water supply pipe, and the present invention solves by recirculated water in pipeline being introduced to the method for current pipe network in asphalt pavement structure.When recirculated water has just entered asphalt pavement structure, both have larger temperature contrast, then can be subject to bituminous pavement heating or cooling, and recirculated water flows back to before water supply pipe 8, again can with pipeline in water there is larger temperature contrast.Therefore, temperature-difference power generation module has two layout area: the one, and current pipe network 14 leading portions, the region that recirculated water and the bituminous pavement temperature difference are larger, can directly be attached to temperature-difference power generation module 12 on water pipe; The 2nd, parallel with water supply pipe before recirculated water flows back to, the region of the larger temperature difference of both existence, contacts 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, temperature-difference power generation module 12 is laid quantity and density can be determined according to the voltage of road electrical appliance, actual road surface situation and economy.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, does not repeat them here it and constructs in detail.
It is the most important link of whole electricity generation module that thermo-electric generation material is selected, and should select good economy performance, new material that conversion efficiency of thermoelectric is high.The low-temperature electricity-generating material in the market with higher figure of merit 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 as Guangdong Fuxin Electronic Technology Co., Ltd. etc.But the more efficient thermo-electric generation material novel along with scientific and technological progress can constantly occur, upgrade in time and adopt new material new technology.
Temperature-difference power generation module 12 need arrange electrical storage device, regulates the use of thermo-electric generation electric energy, if need to also need to arrange direct current alternating current conversion equipment, the electric energy that thermo-electric generation produces is direct current.
Although above-mentioned, by reference to the accompanying drawings the specific embodiment of the present invention is described; but be not limiting the scope of the 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 do not need to pay various modifications that creative work can make or distortion still in protection scope of the present invention.

Claims (2)

1. one kind is utilized Urban Asphalt Pavement and underground water source pipeline thermo-electric generation system, it is characterized in that, the thermo-electric generation that utilizes the low water temperature of bituminous pavement high temperature and water pipeline to form, in Urban Asphalt Pavement, lay current pipe network, current pipe network is parallel on the water pipeline of laying under Urban Asphalt Pavement, and a backflow water end (W.E.) part for current pipe network is wrapped on water pipeline, between current pipe network and Urban Asphalt Pavement and on the contact-making surface of current pipe network and water pipeline coupling part, be respectively equipped with some temperature-difference power generation modules;
It is online that described temperature-difference power generation module is arranged at respectively in current pipe network the water flow pipes of recirculated water and the larger region of the bituminous pavement temperature difference, and the recirculation water end of current pipe network is divided and is wrapped on water pipeline region, and this temperature-difference power generation module contacts with the backflow water end (W.E.) tube wall of current pipe network on one side, and another side contacts with water pipeline tube wall;
Hot water in current pipe network after the heating of bituminous pavement or the bituminous pavement of flowing through is hot junction, and the water of take in the water pipeline of buried underground normal temperature or low temperature is cold junction;
Described water pipeline is parallel to road axis and arranges; Buried depth of pipeline is at 2m;
The circulating water of quoting in water pipeline enters road surface pipe network, recirculated water not directly flows back to water supply pipe, but there is one section of parallel process that regulates temperature, medium balance bituminous pavement temperature and ambient temperature that the water of take is transferring heat energy, the contact-making surface that formation has the temperature difference is simultaneously in order to thermo-electric generation, circulating water has participated in flowing back to original urban water resource pipe-line system after the transmission of heat energy and thermo-electric generation, forms circulation.
2. Urban Asphalt Pavement and the underground water source pipeline thermo-electric generation system of utilizing as claimed in claim 1, is characterized in that, described water source is running water or underground water.
CN201210042849.6A 2012-02-24 2012-02-24 Generation system using temperature difference between city asphalt pavement and underground water source pipeline Active CN102545720B (en)

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CN105958899A (en) * 2016-01-02 2016-09-21 俞亮芽 Solar power generation device
CN107959342A (en) * 2017-12-25 2018-04-24 黑龙江龙电电气有限公司 A kind of method of supplying power to of Urban Underground pipe gallery

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CN101783628B (en) * 2009-01-21 2012-01-11 骆俊光 Environmental protection heat generating device
CN202116965U (en) * 2011-04-06 2012-01-18 福建省交通科学技术研究所 Thermoelectric conversion device for heat transfer of asphalt concrete road
CN202513852U (en) * 2012-02-24 2012-10-31 山东大学 Generation system using temperature difference between city asphalt pavement and underground water source pipeline

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US7363769B2 (en) * 2005-03-09 2008-04-29 Kelix Heat Transfer Systems, Llc Electromagnetic signal transmission/reception tower and accompanying base station employing system of coaxial-flow heat exchanging structures installed in well bores to thermally control the environment housing electronic equipment within the base station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101783628B (en) * 2009-01-21 2012-01-11 骆俊光 Environmental protection heat generating device
CN202116965U (en) * 2011-04-06 2012-01-18 福建省交通科学技术研究所 Thermoelectric conversion device for heat transfer of asphalt concrete road
CN202513852U (en) * 2012-02-24 2012-10-31 山东大学 Generation system using temperature difference between city asphalt pavement and underground water source pipeline

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