CN203906056U - Power generation device using waste heat of automobile exhaust - Google Patents
Power generation device using waste heat of automobile exhaust Download PDFInfo
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- CN203906056U CN203906056U CN201420242439.0U CN201420242439U CN203906056U CN 203906056 U CN203906056 U CN 203906056U CN 201420242439 U CN201420242439 U CN 201420242439U CN 203906056 U CN203906056 U CN 203906056U
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- 238000010248 power generation Methods 0.000 title claims abstract description 48
- 239000002918 waste heat Substances 0.000 title claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 5
- 229910052618 mica group Inorganic materials 0.000 claims description 5
- 241000237942 Conidae Species 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 3
- 238000004064 recycling Methods 0.000 abstract description 20
- 238000001816 cooling Methods 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 5
- 239000002912 waste gas Substances 0.000 abstract description 3
- 239000000498 cooling water Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
本实用新型公开了一种汽车尾气废热回电装置，包括：包括进气端锥、废热回电部件组、出气端锥；所述废热回电部件组一端通过外壳连接所述进气端锥，所述废热回电部件组另一端通过外壳连接所述出气端锥；所述废热回电部件组由内向外依次为集热器、热电发电组件、水冷板、外壳；此装置有效利用汽车废气余热发电，从而提高汽车发动机能量转换效率。本实用新型安装方便，结构紧凑，可应用于多种场合；另外，通过废气热能发电装置为车载电池充电，充分提高了能源的利用率，降低了整车油耗，提高了燃油经济性，同时也减少了车载发电机的体积。
The utility model discloses an automobile tail gas waste heat recycling device, comprising: an air inlet cone, a waste heat recycling component group, and an air outlet cone; one end of the waste heat recycling component group is connected to the inlet cone through a casing, and the waste heat The other end of the recycling component group is connected to the gas outlet cone through the casing; the waste heat recycling component group is sequentially composed of a heat collector, a thermoelectric power generation component, a water cooling plate, and a casing from the inside to the outside; Engine energy conversion efficiency. The utility model is easy to install and has a compact structure, and can be applied to various occasions; in addition, the vehicle-mounted battery is charged through the waste gas thermal power generation device, which fully improves the utilization rate of energy, reduces the fuel consumption of the whole vehicle, and improves the fuel economy. The volume of the on-board generator is reduced.
Description
技术领域 technical field
本实用新型涉及一种发电装置，特别涉及一种汽车尾气废热回电装置。 The utility model relates to a power generation device, in particular to a waste heat recycling device for automobile tail gas.
背景技术 Background technique
随着半导体热电材料成分的优化、制备工艺的完善以及热电模块制造工艺的逐步提高，热电领域研究的重点开始放在了热电转换系统应用领域上。国外开展热电转换系统（或称发电器 TEG）应用研究较早，且在许多领域已达到了实际应用，尤其是军工业上。自 1961 年到 1998 年，美国已在 25 个空间飞行器上使用 43 个 RTG（放射性同位素温差发电器），军事方面，早在 20 世纪 80 年代初，美国就完成了 500～1000W军用温差发电机的研制，并于 80 年代末正式列入部队装备。1990 年以后，美国能源部与 Hi-Z 公司共同启动了一项利用热电发电机回收汽车尾气，此后部分公司开始研究汽车尾气废热回电装置。 With the optimization of the composition of semiconductor thermoelectric materials, the improvement of the preparation process, and the gradual improvement of the manufacturing process of thermoelectric modules, the focus of research in the field of thermoelectricity has begun to focus on the application of thermoelectric conversion systems. The application research of thermoelectric conversion system (or generator TEG) was carried out earlier in foreign countries, and it has achieved practical application in many fields, especially in the military industry. From 1961 to 1998, the United States has used 43 RTGs (radioisotope thermoelectric generators) on 25 space vehicles. In terms of military affairs, as early as the early 1980s, the United States completed the development of 500-1000W military thermoelectric generators. It was developed and officially included in military equipment in the late 1980s. After 1990, the U.S. Department of Energy and Hi-Z Company jointly launched a project to use thermoelectric generators to recycle vehicle exhaust. Since then, some companies have begun to study vehicle exhaust waste heat recycling devices.
尾气废热发电的课题国内也开展了对汽车尾气余热收集的相关研究，但从已报道的研究成果开看，目前该技术仍然处于一个初级阶段，市场上尚没有一个成熟的商业化产品出现。从2009年，中国科学院上海硅酸盐研究所与上海汽车集团股份有限公司技术研究中心在国家 973 重点基础研究发展计划专项资金的资助下，共同启动了一项热电技术在汽车尾气回收的新项目。但从已报道的研究成果开看，目前技术还不成熟。目前，汽车的动力转换效率仅40%左右，燃油中有多达60%左右的能量没有得到有效利用，若将这些能量的10%利用起来，将定会带来良好的社会效益和可观的经济效益。 The subject of exhaust waste heat power generation has also carried out related research on the collection of waste heat from automobile exhaust in China, but from the reported research results, the technology is still in its infancy, and there is no mature commercial product on the market. Since 2009, the Shanghai Institute of Ceramics of the Chinese Academy of Sciences and the Technology Research Center of SAIC Motor Corporation Limited have jointly launched a new project of thermoelectric technology in the recovery of automobile exhaust with the support of the special funds of the National 973 Key Basic Research Development Program . However, from the reported research results, the current technology is not yet mature. At present, the power conversion efficiency of automobiles is only about 40%, and as many as 60% of the energy in fuel has not been effectively utilized. If 10% of this energy is utilized, it will definitely bring good social benefits and considerable economic benefits. benefit.
实用新型内容 Utility model content
本实用新型的目的，在于提供一种应用温差发电技术，利用汽车废气余热发电，从而提高汽车发动机能量转换效率的汽车废气余热温差发电装置。 The purpose of this utility model is to provide a thermoelectric power generation device for waste heat of automobile waste gas, which utilizes waste heat of automobile exhaust gas to generate electricity, thereby improving the energy conversion efficiency of the automobile engine.
本实用新型的技术方案为： 一种汽车尾气废热回电装置，其特征包括： The technical solution of the present utility model is: an automobile exhaust waste heat recycling device, the features of which include:
一种汽车尾气废热回电装置，包括进气端锥、废热回电部件组、出气端锥；所述废热回电部件组一端通过外壳连接所述进气端锥，所述废热回电部件组另一端通过外壳连接所述出气端锥；所述废热回电部件组由内向外依次为集热器、热电发电组件、水冷板、外壳；所述集热器内部为吸热涂层，所述热电发电组件的内、外表面均贴有云母片，起到绝缘隔离的作用，且所述热电发电组件的内、外表面一侧为热端，另一侧为冷端；所述热电发电组件的热端紧密贴合所述集热器外表面，所述热电发电组件的冷端紧密贴合所述水冷板的内表面；所述水冷板通过其内部的水管同外部的水箱相连通；此装置有效利用汽车废气余热发电，从而提高汽车发动机能量转换效率，安装方便，结构紧凑。 A waste heat recovery device for automobile exhaust, comprising an inlet cone, a waste heat recovery component group, and an outlet cone; one end of the waste heat recovery component group is connected to the intake end cone through a casing, and the other end of the waste heat recovery component group is passed through the casing Connect the gas outlet cone; the waste heat recycling component group is sequentially heat collector, thermoelectric power generation component, water cooling plate, and shell from the inside to the outside; the inside of the heat collector is a heat-absorbing coating, and the inside , the outer surfaces are all pasted with mica sheets, which play the role of insulation and isolation, and one side of the inner and outer surfaces of the thermoelectric power generation component is the hot end, and the other side is the cold end; the hot end of the thermoelectric power generation component is closely attached to The outer surface of the heat collector, the cold end of the thermoelectric power generation assembly is closely attached to the inner surface of the water-cooled plate; the water-cooled plate is connected with the external water tank through its internal water pipe; this device effectively utilizes automobile exhaust gas Waste heat power generation, thereby improving the energy conversion efficiency of automobile engines, easy installation, and compact structure.
作为本实用新型的进一步改进，所述进气端锥与所述出气端锥均为薄壁锥壳体，所述进气端锥一端与第一法兰盘连接，所述第一法兰盘与汽车排气系统前端连接；所述出气端锥一端与第二法兰盘连接，所述第二法兰盘与汽车排气系统后端连接。 As a further improvement of the utility model, the inlet cone and the outlet cone are both thin-walled cone shells, one end of the inlet cone is connected to the first flange, and the first flange It is connected with the front end of the automobile exhaust system; one end of the air outlet cone is connected with the second flange, and the second flange is connected with the rear end of the automobile exhaust system.
作为本实用新型的进一步改进，所述水冷板的外表面有预紧弹簧，所述预紧弹簧对所述热电发电组件以及所述水冷板进行预紧定位；所述预紧弹簧由其外端的橡胶垫圈和所述外壳进行定位，所述外壳由紧固螺栓加以固定；上述的预紧弹簧由其外端的橡胶垫圈既能够起到预紧固定的作用，又起到减震作用。 As a further improvement of the utility model, the outer surface of the water-cooled plate has a pre-tension spring, and the pre-tension spring performs pre-tension and positioning on the thermoelectric power generation assembly and the water-cooled plate; The rubber washer is positioned with the shell, and the shell is fixed by fastening bolts; the rubber washer at the outer end of the above-mentioned pre-tightening spring can not only play the role of pre-tightening and fixing, but also play the role of shock absorption.
作为本实用新型的进一步改进，所述集热器的截面为正八边形，所述正八边形所在面上的所述热电发电组件以及所述水冷板为八组；该改进可保证温差发电组件换热面的接触充分，换热效率高。 As a further improvement of the utility model, the section of the heat collector is a regular octagon, and the thermoelectric power generation components and the water cooling plates on the surface of the regular octagon are eight groups; this improvement can ensure that the thermoelectric power generation components The contact of the heat exchange surface is sufficient, and the heat exchange efficiency is high.
作为本实用新型的进一步改进，其特征在于：所述集热器为一体式结构，其内部的所述吸热涂层为网状结构；该改进有利于集热器充分的吸收排气热量。 As a further improvement of the utility model, it is characterized in that: the heat collector has an integrated structure, and the heat-absorbing coating inside it is a mesh structure; this improvement is conducive to the heat collector fully absorbing exhaust heat.
作为本实用新型的进一步改进，所述热电发电组件由热电发电片组成，采用六片热电发电片串联为一组，然后八组并联的方式连接。 As a further improvement of the utility model, the thermoelectric power generation assembly is composed of thermoelectric power generation chips, and six thermoelectric power generation chips are connected in series in one group, and then eight groups are connected in parallel.
作为本实用新型的进一步改进，所述水冷板内部为并列多通道结构，所述并列多通道结构为并列多排的方形空腔，所述方形空腔在所述废热回电部件组轴向长度的两端焊接有两对进水管头及出水管头。 As a further improvement of the present utility model, the interior of the water-cooled plate is a parallel multi-channel structure, and the parallel multi-channel structure is a parallel multi-row square cavity, and the square cavity is 100% of the axial length of the waste heat recycling component group. Two pairs of water inlet pipe heads and water outlet pipe heads are welded at both ends. the
本实用新型的有益效果为：汽车尾气废热回电装置，汽车废气从进气端锥输入，经过集热器时废气中的部分余热被集热器内的网状吸热涂层结构收集并传递至安装在集热器外表面的热电发电组件的热端，热电发电组件的冷端与水冷板紧密贴合，即热电发电组件热端被集热器加热，冷端被水冷板冷却，因此热电发电组件热端冷端产生温度差，从而产生电量，热电发电组件的两端紧贴有云母片用于绝缘。本实用新型的汽车尾气废热回电装置可保证温差发电组件换热面的接触充分，换热效率高，同时安装方便，结构紧凑,可应用于多种场合。 The beneficial effects of the utility model are as follows: the waste heat recycling device of automobile exhaust, the exhaust gas of the automobile is input from the inlet cone, and part of the waste heat in the exhaust gas is collected by the reticular heat-absorbing coating structure in the heat collector and transferred to the The hot end of the thermoelectric power generation component installed on the outer surface of the collector, the cold end of the thermoelectric power generation component is closely attached to the water-cooled plate, that is, the hot end of the thermoelectric power generation component is heated by the heat collector, and the cold end is cooled by the water-cooled plate, so thermoelectric power generation The temperature difference between the hot end and the cold end of the component generates electricity, and the two ends of the thermoelectric power generation component are closely attached to mica sheets for insulation. The waste heat recycling device for automobile exhaust of the utility model can ensure sufficient contact of the heat exchange surface of the thermoelectric power generation component, high heat exchange efficiency, convenient installation and compact structure, and can be applied to various occasions.
附图说明 Description of drawings
图1是本实用新型汽车尾气废热回电装置的横截面图； Fig. 1 is the cross-sectional view of the utility model automobile exhaust waste heat recycling device;
图2是本汽车尾气废热回电装置的整体结构示意图。 Fig. 2 is a schematic diagram of the overall structure of the automobile exhaust waste heat recycling device.
图中：1-橡胶垫圈；2-预紧弹簧；3-紧固螺栓；4-水冷板；5-热电发电组件；6-云母片；7-集热器；8-外壳；9-；10-进气端锥；11-出气端锥；12-第二法兰盘；13-第一法兰盘。 In the figure: 1-rubber gasket; 2-preload spring; 3-fastening bolt; 4-water cooling plate; 5-thermoelectric power generation component; 6-mica sheet; 7-heat collector; - air inlet cone; 11 - air outlet cone; 12 - second flange; 13 - first flange.
具体实施方式 Detailed ways
参见图1、图2，一种汽车尾气废热回电装置，包括进气端锥10、废热回电部件组、出气端锥11；所述废热回电部件组一端通过外壳8连接所述进气端锥10，所述废热回电部件组另一端通过外壳8连接所述出气端锥11；所述废热回电部件组由内向外依次为集热器7、热电发电组件5、水冷板4、外壳8；所述集热器7内部为网状结构的吸热涂层9，所述集热器7为一体式结构；所述热电发电组件5的内、外表面均贴有云母片6，起到绝缘的作用，且所述热电发电组件5的内、外表面一侧为热端，另一侧为冷端；所述热电发电组件5的热端紧密贴合所述集热器7外表面，所述热电发电组件5的冷端紧密贴合所述水冷板4的内表面；所述水冷板4通过其内部的水管同外部的水箱相连通。 Referring to Fig. 1 and Fig. 2, an automobile exhaust waste heat recycling device includes an inlet cone 10, a waste heat recycling component group, and an outlet cone 11; one end of the waste heat recycling component group is connected to the inlet cone 10 through a casing 8 The other end of the waste heat recycling component group is connected to the gas outlet cone 11 through the casing 8; the waste heat recycling component group is sequentially composed of a heat collector 7, a thermoelectric power generation component 5, a water cooling plate 4, and a casing 8 from the inside to the outside; The inside of the heat collector 7 is a heat-absorbing coating 9 with a mesh structure, and the heat collector 7 is an integrated structure; the inner and outer surfaces of the thermoelectric power generation assembly 5 are pasted with mica sheets 6 to play the role of insulation , and one side of the inner and outer surfaces of the thermoelectric power generation assembly 5 is a hot end, and the other side is a cold end; the hot end of the thermoelectric power generation assembly 5 is closely attached to the outer surface of the heat collector 7, and the thermoelectric power generation assembly 5 The cold end of the power generation assembly 5 is closely attached to the inner surface of the water-cooled plate 4; the water-cooled plate 4 communicates with the external water tank through its internal water pipe.
上述进气端锥10与所述出气端锥11均为薄壁锥壳体，所述进气端锥10一端与第一法兰盘13连接，所述第一法兰盘13与汽车排气系统前端连接；所述出气端锥11一端与第二法兰盘12连接，所述第二法兰盘12与汽车排气系统后端连接。 The above-mentioned air inlet cone 10 and the air outlet cone 11 are thin-walled cone shells, and one end of the air inlet cone 10 is connected to the first flange 13, and the first flange 13 is connected to the automobile exhaust. The front end of the system is connected; one end of the air outlet cone 11 is connected to the second flange 12, and the second flange 12 is connected to the rear end of the automobile exhaust system.
作为进一步改进，所述集热器7的截面为正八边形，所述截面为正八边形的所在面上均有所述热电发电组件5以及所述水冷板4，所述热电发电组件5以及所述水冷板4为八组，所述水冷板4的外表面有预紧弹簧2，所述预紧弹簧2对所述热电发电组件5以及所述水冷板4进行预紧定位；所述预紧弹簧2由其外端的橡胶垫圈1和所述外壳8进行定位；所述外壳8由紧固螺栓3加以固定；所述热电发电组件5采用美国HZ公司的HZ-20热电发电组件，由热电发电片组成，采用六片热电发电片串联为一组，然后八组并联的方式连接。 As a further improvement, the cross section of the heat collector 7 is a regular octagon, and the thermoelectric power generation assembly 5 and the water cooling plate 4 are arranged on the surface where the cross section is a regular octagon, and the thermoelectric power generation assembly 5 and the The water-cooled plates 4 are eight groups, and the outer surface of the water-cooled plates 4 has a pre-tension spring 2, and the pre-tension springs 2 pre-stress and position the thermoelectric power generation assembly 5 and the water-cooled plates 4; The tight spring 2 is positioned by the rubber washer 1 at its outer end and the housing 8; the housing 8 is fixed by the fastening bolt 3; The power generation sheet is composed of six thermoelectric generation sheets connected in series, and then eight groups are connected in parallel.
作为进一步改进，上述水冷板4内部为并列多通道结构，所述并列多通道结构为并列多排的方形空腔，所述方形空腔在所述废热回电部件组轴向长度的两端焊接有两对进水管头及出水管头；上述水箱和水冷板4之间的冷却水路，冷却水由水箱引出，通过四通和三通接头分成八组十六条并联的水路分别向水冷板注入冷却水，流经水冷板的冷却水再通过三通和四通接头并为一路，流经冷却装置后返回水箱。 As a further improvement, the inside of the water-cooling plate 4 is a parallel multi-channel structure, and the parallel multi-channel structure is a parallel multi-row square cavity, and the square cavity is welded at both ends of the axial length of the waste heat recycling component group. Two pairs of water inlet pipe heads and water outlet pipe heads; the cooling water path between the above-mentioned water tank and the water-cooled plate 4, the cooling water is drawn from the water tank, and is divided into eight groups of sixteen parallel water paths through the four-way and three-way joints to inject cooling water into the water-cooled plate respectively. Water, the cooling water flowing through the water-cooled plate passes through the three-way and four-way joints and merges into one path, and returns to the water tank after flowing through the cooling device.
汽车废气通过进气端锥10进入集热器7内部，废气中的部分余热被集热器7内的网状吸热涂层结构9收集并传递至安装在集热器7外表面的热电发电组件5的热端，热电发电组件5的冷端与水冷板4紧密贴合，水冷板4通过预紧弹簧2和橡胶垫圈1与外壳连接，水冷板4内部有冷却水通过，即热电发电组件5热端被集热器7加热，冷端被水冷板4冷却，因此热电发电组件5的热端冷端产生温度差，从而产生位差电动势。另外，通过废气热能发电装置为车载电池充电，充分提高了能源的利用率，降低了整车油耗，提高了燃油经济性，同时也减少了车载发电机的体积。 Automobile exhaust gas enters the heat collector 7 through the inlet cone 10, and part of the waste heat in the exhaust gas is collected by the reticular heat-absorbing coating structure 9 in the heat collector 7 and transferred to the thermoelectric generator installed on the outer surface of the heat collector 7. The hot end of the component 5 and the cold end of the thermoelectric power generation component 5 are closely attached to the water-cooled plate 4. The water-cooled plate 4 is connected to the casing through the pre-tensioned spring 2 and the rubber gasket 1. There is cooling water passing through the inside of the water-cooled plate 4, that is, the thermoelectric power generation component 5 The hot end is heated by the heat collector 7, and the cold end is cooled by the water-cooled plate 4. Therefore, a temperature difference is generated between the hot end and the cold end of the thermoelectric power generation component 5, thereby generating a potential difference electromotive force. In addition, the vehicle battery is charged by the waste gas thermal power generation device, which fully improves the utilization rate of energy, reduces the fuel consumption of the vehicle, improves fuel economy, and reduces the volume of the vehicle generator.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901585A (en) * | 2015-06-05 | 2015-09-09 | 华北水利水电大学 | Thermoelectric power generation device using flue gas waste heat of rear smoke channel of boiler and semiconductor power generation device |
| CN106050374A (en) * | 2016-06-27 | 2016-10-26 | 湖南大学 | Device for regulating thermoelectric generation power matched load in real time by changing heat transfer areas |
| CN106368774A (en) * | 2016-09-08 | 2017-02-01 | 安徽工业大学 | Flange plate heat exchange type automobile tail gas power generation device |
| CN106533265A (en) * | 2017-01-12 | 2017-03-22 | 王赞 | Energy-saving device and method for thermoelectric power generation based on heat distribution pipeline |
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2014
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901585A (en) * | 2015-06-05 | 2015-09-09 | 华北水利水电大学 | Thermoelectric power generation device using flue gas waste heat of rear smoke channel of boiler and semiconductor power generation device |
| CN104901585B (en) * | 2015-06-05 | 2017-06-20 | 华北水利水电大学 | The thermoelectric generating device and semiconductor generating equipment of a kind of utilization boiler back end ductwork fume afterheat |
| CN106050374A (en) * | 2016-06-27 | 2016-10-26 | 湖南大学 | Device for regulating thermoelectric generation power matched load in real time by changing heat transfer areas |
| CN106050374B (en) * | 2016-06-27 | 2018-05-25 | 湖南大学 | A kind of variable heat transfer area adjusts the device of thermo-electric generation power match load in real time |
| CN106368774A (en) * | 2016-09-08 | 2017-02-01 | 安徽工业大学 | Flange plate heat exchange type automobile tail gas power generation device |
| CN106368774B (en) * | 2016-09-08 | 2019-03-22 | 安徽工业大学 | A kind of wing plate heat exchange type tail gas electricity generating device of automobile |
| CN106533265A (en) * | 2017-01-12 | 2017-03-22 | 王赞 | Energy-saving device and method for thermoelectric power generation based on heat distribution pipeline |
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