Waste heat recovery power generation device

Abstract

The utility model discloses a waste heat recovery power generation device. The waste heat recovery power generation device comprises a heat source unit, a thermoelectric generator and a circulating liquid cooling unit, the high-temperature end face of the thermoelectric generator is connected to the heat source unit, the circulating liquid cooling unit is connected to the low-temperature end face of the thermoelectric generator, and the heat source unit is used for supplying heat to the high-temperature end face of the thermoelectric generator. The circulating liquid cooling unit is used for absorbing heat from the low-temperature end face of the thermoelectric generator, and the thermoelectric generator is used for generating power by using the temperature difference between the high-temperature end face and the low-temperature end face. The waste heat recovery power generation device can effectively solve the problem that waste heat of a heat source unit such as a blast furnace granulation tower shell cannot directly act on a steam turbine and a screw machine unit for power generation, achieves recovery and utilization of the waste heat of the heat source unit such as the blast furnace granulation tower shell for power generation, is high in thermoelectric conversion rate and has considerable economic benefits.

Description

Technical Field

[0001] This application relates to the technical field of power generation, and particularly to a waste heat recovery power generation device. Background Art

[0002] The blast furnace granulation tower is a device for treating the molten slag from blast furnace smelting, and its core function is to treat the high-temperature molten slag. Inside the blast furnace granulation tower, the molten slag from blast furnace smelting is quenched by a granulation spray head and then sinks into the slag settling pond in the tower. The slag-water mixture then enters the dehydrator drum through the slag water channel and the slag water distributor for slag-water separation. The finished slag falls onto the belt conveyor through the receiving hopper and is transported to the slag yard, while the return water flows through the screen into the water tank and overflows into the pool below the drum. The return water is transported to each water usage point for recycling after precipitation, and the fine slag is regularly cleaned by a grab bucket. The existing temperature of the outer shell of the blast furnace granulation tower is between 100°C and 150°C, inevitably causing a large amount of heat loss. Therefore, it is necessary to recover and generate electricity from the waste heat of the granulation tower shell.

[0003] Currently, when a common steam turbine unit generates electricity, the temperature of the steam must be above 280°C, and when a screw unit generates electricity, the temperature of the steam must be above 170°C. Moreover, both have high requirements for water quality and high installation costs. For the waste heat source of 60°C - 150°C in the blast furnace granulation tower, due to the low temperature of the waste heat source, it is very difficult to convert the waste heat of the waste heat source into electric energy using a conventional power cycle system. Usually, the waste heat source of 60°C - 150°C is directly discharged into the environment, causing serious environmental pollution and energy waste. In addition, there are abundant renewable energy sources such as geothermal energy and solar energy in nature, and these energy sources all belong to low-temperature heat sources.

[0004] In the prior art, for a low-temperature high-pressure hot water generator system, hot water with a temperature of 60°C to 99°C is collected to expand a low-temperature working fluid (ammonia) to generate a working gas of about 10 Mpa, and the working gas drives a storage double-power air motor to work, driving the generator set to generate electricity. However, this technology uses ammonia as the working gas, and ammonia is a highly volatile toxic gas. Using it as the working medium has great safety hazards, not only with a low thermoelectric conversion rate but also unable to achieve continuous power generation of the generator set. There is also a technology for a power generation system using a low-temperature heat source, which includes a generator, a circulation device, and a circulating working fluid. The circulating working fluid is carbon dioxide in a supercritical state. This technology not only has a low thermoelectric conversion rate but also has a high installation cost. It can be seen that the prior art for recovering and generating electricity from low-temperature heat sources below 150°C is not yet mature. Summary of the Utility Model

[0005] Based on this, it is necessary to provide a waste heat recovery power generation device. The waste heat recovery power generation device of the present utility model can effectively solve the problem that the waste heat of the heat source unit, such as the outer shell of the blast furnace granulation tower, cannot directly act on the steam turbine or screw machine unit for power generation, realize the recovery and utilization of the waste heat of the heat source unit, such as the outer shell of the blast furnace granulation tower, for power generation, and has a high thermoelectric conversion rate and considerable economic benefits.

[0006] An embodiment of the present application provides a waste heat recovery power generation device.

[0007] A waste heat recovery power generation device includes a heat source unit, a thermoelectric generator, and a circulating liquid cooling unit. The high-temperature end face of the thermoelectric generator is connected to the heat source unit, and the circulating liquid cooling unit is connected to the low-temperature end face of the thermoelectric generator. The heat source unit is used to supply heat to the high-temperature end face of the thermoelectric generator, the circulating liquid cooling unit is used to absorb heat from the low-temperature end face of the thermoelectric generator, and the thermoelectric generator is used to generate electricity by using the temperature difference between the high-temperature end face and the low-temperature end face.

[0008] In some embodiments, the heat source unit includes a blast furnace granulation tower, and the thermoelectric generator is fixedly connected to the outer shell of the blast furnace granulation tower.

[0009] In some embodiments, the circulating liquid cooling unit includes a heat absorption box and a cooling circulation pipeline. The heat absorption box is connected to the low-temperature end face of the thermoelectric generator, and the cooling circulation pipeline is connected to the heat absorption box to realize the circulation of the coolant.

[0010] In some embodiments, the circulating liquid cooling unit further includes a liquid storage tank. The liquid storage tank is connected to the cooling circulation pipeline, and the cooling circulation pipeline is used to realize the circulation of the coolant in the liquid storage tank along the cooling circulation pipeline between the liquid storage tank and the heat absorption box.

[0011] In some embodiments, the circulating liquid cooling unit further includes a circulation pump. The circulation pump is installed on the cooling circulation pipeline, and the circulation pump is used to drive the coolant to circulate along the cooling circulation pipeline.

[0012] In some embodiments, the circulating liquid cooling unit further includes a radiator. The radiator is installed on the cooling circulation pipeline, and the radiator is used to dissipate the heat of the coolant in the cooling circulation pipeline.

[0013] In some embodiments, the waste heat recovery power generation device further includes an electrical load device, and the electrical load device is electrically connected to the thermoelectric generator.

[0014] In some embodiments, the waste heat recovery power generation device further includes a grid power supply device, and the grid power supply device is electrically connected to the thermoelectric generator.

[0015] In some of these embodiments, the waste heat recovery power generation device further includes a data acquisition and processing unit, which is electrically connected to the thermoelectric generator. The data acquisition and processing unit is used to collect the temperature of the high-temperature end face, the temperature of the low-temperature end face, the output voltage, and the output current of the thermoelectric generator.

[0016] In some of these embodiments, the waste heat recovery power generation device further includes a control unit and a plurality of sensors. The heat source unit, the low-temperature end face of the thermoelectric generator, and the high-temperature end face of the thermoelectric generator are respectively connected with the sensors. The control unit is electrically connected to the plurality of sensors and the data acquisition and processing unit.

[0017] The waste heat recovery power generation device of the present utility model can effectively solve the problem that the waste heat of the heat source unit, such as the outer shell of the blast furnace granulation tower, cannot directly act on steam turbines and screw machine units for power generation, realize the recovery and utilization of the waste heat of the heat source unit, such as the outer shell of the blast furnace granulation tower, for power generation, and has a high thermoelectric conversion rate and considerable economic benefits. Specifically, the heat source unit of the waste heat recovery power generation device of the present utility model includes industrial discharged waste hot water, solar heat collection heat, ocean temperature difference heat, geothermal water, etc., without secondary heating, and at the same time has a modular integrated machine design, with a small volume, light weight, and convenient maintenance and repair. The waste heat temperature of the heat source unit of the waste heat recovery power generation device of the present application is lower than 150°C, and the requirement for the waste heat temperature of the heat source unit is low, and it can be applicable to the heat recovery of various types of heat source units. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative efforts.

[0019] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings. Among them, the same reference numerals in the following description represent the same parts.

[0020] Figure 1 Schematic diagram of the waste heat recovery power generation device according to an embodiment of the present utility model;

[0021] Figure 2 Schematic diagram of the principle of the thermoelectric generator of the waste heat recovery power generation device according to an embodiment of the present utility model;

[0022] Figure 3 Schematic diagram of the connection of different thermoelectric materials of the thermoelectric generator according to an embodiment of the present utility model.

[0023] Description of Reference Numerals

[0024] 10. Waste heat recovery power generation device; 100. Heat source unit; 200. Temperature difference generator; 300. Circulating liquid cooling unit; 301. Heat absorption box; 302. Cooling circulation pipeline; 303. Liquid storage tank; 304. Circulating pump; 305. Radiator; 400. Electrical load equipment; 500. Grid power supply equipment; 600. Control unit. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0029] In the description of the present utility model, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of the first and second, it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0030] In this application, when it comes to a numerical interval (that is, a numerical range), unless otherwise specified, the distribution of the selectable numerical values within this numerical interval is regarded as continuous, and includes the two numerical endpoints of this numerical interval (that is, the minimum value and the maximum value), as well as each numerical value between these two numerical endpoints. Unless otherwise specified, when the numerical interval only refers to the integers within this numerical interval, it includes the two endpoint integers of this numerical range, as well as each integer between the two endpoints, which is equivalent to directly listing each integer. When providing multiple numerical ranges to describe features or characteristics, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all sub-ranges subsumed therein. The "numerical value" in this numerical interval can be any quantitative value, such as a number, a percentage, a ratio, etc. The "numerical interval" allows for a broad inclusion of quantitative intervals such as percentage intervals, ratio intervals, ratio value intervals, etc.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this article are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] The embodiment of this application provides a waste heat recovery power generation device to solve the problem that the existing technology for waste heat recovery power generation technology with a low-temperature heat source below 150°C is not yet mature. The waste heat recovery power generation device will be described below with reference to the accompanying drawings.

[0033] The waste heat recovery power generation device 10 provided by the embodiments of the present application. Exemplarily, please refer to Figure 1 as shown in Figure 1 FIG. Figure 1 is a schematic structural diagram of the waste heat recovery power generation device 10 provided by the embodiments of the present application. The waste heat recovery power generation device 10 of the present application can be used for waste heat recovery power generation from low-temperature heat sources with temperatures below 150°C. To more clearly illustrate the structure of the waste heat recovery power generation device 10, the waste heat recovery power generation device 10 will be introduced below with reference to the accompanying drawings.

[0034] Exemplarily, please refer to Figure 1 as shown in FIG. Figure 1 , a waste heat recovery power generation device 10 includes a heat source unit 100, a thermoelectric generator 200, and a circulating liquid cooling unit 300. The high-temperature end face of the thermoelectric generator 200 is connected to the heat source unit 100. The circulating liquid cooling unit 300 is connected to the low-temperature end face of the thermoelectric generator 200. The heat source unit 100 is used to supply heat to the high-temperature end face of the thermoelectric generator 200. The circulating liquid cooling unit 300 is used to absorb heat from the low-temperature end face of the thermoelectric generator 200. The thermoelectric generator 200 is used to generate electricity by using the temperature difference between the high-temperature end face and the low-temperature end face.

[0035] The heat source unit 100 of the waste heat recovery power generation device 10 of the present utility model includes industrial discharged waste hot water, solar heat collection heat, ocean temperature difference heat, geothermal water, etc., without secondary heating, and at the same time has a modular integrated machine design, with a small volume, light weight, and convenient maintenance and repair. The waste heat temperature of the heat source unit 100 of the waste heat recovery power generation device 10 of the present application is lower than 150°C, and the requirement for the waste heat temperature of the heat source unit 100 is low, and it can be applicable to the heat recovery of various types of heat source units 100.

[0036] In the present application, the Seebeck effect is directly used to convert heat energy into electrical energy. Taking the blast furnace granulation tower as the heat source unit 100 as an example, the heat energy of the outer shell of the blast furnace granulation tower is converted into electrical energy. Part of it can be used for the electrical load device 400, and the excess part is directly sent to the power grid power supply device 500. The basic principle and structural characteristics of the thermoelectric generator 200 are as follows: The principle of the thermoelectric generator 200 is based on the Seebeck effect of thermoelectric materials. As Figure 2 shown in Figure 2 FIG. Figure 2 is a schematic diagram of the principle of the thermoelectric generator 200 of the waste heat recovery power generation device 10 according to an embodiment of the present utility model. When two different thermoelectric materials form a loop AB, and the temperatures T0 and T1 of the two nodes of the loop AB are different, such as T1 > T0, there is an electromotive force in the loop AB, and this effect is called the Seebeck effect. In the thermoelectric generator 200 of the present application, two different thermoelectric materials are connected by conductive electrodes in the manner Figure 3 shown in Figure 3Schematic diagram of the connection of different thermoelectric materials of a thermoelectric generator according to an embodiment of the present invention. There is a temperature difference between the heat source unit 100 and the heat sink. According to the Seebeck effect, a voltage V will be applied to the load shown in Figure 2 to form a thermoelectric generator 200, and low-temperature power generation can be carried out. CD

[0037] In some embodiments, common thermoelectric materials include: bismuth telluride (Bi2Te3): It has good thermoelectric performance near room temperature and is widely used in thermoelectric coolers and small thermoelectric generators. Tin selenide (SnSe): It has a high ZT value and good thermoelectric performance at high temperatures. Silicon-germanium alloy (SiGe): Suitable for thermoelectric applications in high-temperature environments. Lead sulfide (PbS): It has good performance at medium temperatures.

[0038] In some embodiments, please refer to Figure 1 shown. The heat source unit 100 includes a blast furnace granulation tower. The thermoelectric generator 200 is fixedly connected to the outer shell of the blast furnace granulation tower. It is not difficult to understand that in other examples, the heat source unit 100 may also include other heat-generating devices. The temperature of the outer shell of the blast furnace granulation tower is generally between 60°C and 150°C, and the present application can recover the heat of the outer shell of the blast furnace granulation tower at 60°C to 150°C.

[0039] In some embodiments, please refer to Figure 1 shown. The circulating liquid cooling unit 300 includes a heat absorption box 301 and a cooling circulation pipeline 302. The heat absorption box 301 is connected to the low-temperature end face of the thermoelectric generator 200, and the cooling circulation pipeline 302 is connected to the heat absorption box 301 to realize the circulation of the coolant. The heat absorption box 301 includes a coolant outlet and a coolant inlet, and both ends of the cooling circulation pipeline 302 are respectively communicated with the coolant outlet and the coolant inlet. The lower end face of the heat absorption box 301 is closely attached to the low-temperature end face of the thermoelectric generator 200, and the other faces of the heat absorption box 301 are well insulated to avoid heat dissipation.

[0040] In some embodiments, please refer to Figure 1 shown. The circulating liquid cooling unit 300 further includes a liquid storage tank 303. The liquid storage tank 303 is connected to the cooling circulation pipeline 302. The cooling circulation pipeline 302 is used to realize the circulation of the coolant in the liquid storage tank 303 along the cooling circulation pipeline 302 between the liquid storage tank 303 and the heat absorption box 301. The liquid storage tank 303 is used to store the coolant. The volume and shape of the liquid storage tank 303 can be set according to actual needs. For example, it can be adaptively set according to the volume of the blast furnace granulation tower.

[0041] In some embodiments, please refer to Figure 1As shown, the circulating liquid cooling unit 300 further includes a circulating pump 304. The circulating pump 304 is installed on the cooling circulation pipeline 302, and the circulating pump 304 is used to drive the coolant to circulate along the cooling circulation pipeline 302. The driving program of the circulating pump 304 can be set as needed, and the circulating pump 304 can operate under the control of the control unit 600.

[0042] In some embodiments, refer to Figure 1 As shown, the circulating liquid cooling unit 300 further includes a radiator 305. The radiator 305 is installed on the cooling circulation pipeline 302, and the radiator 305 is used to dissipate the heat of the coolant in the cooling circulation pipeline 302. The radiator 305 can accelerate the cooling of the high-temperature coolant after absorbing heat in the cooling circulation pipeline 302 to achieve circulation. The radiator 305 can include structures such as a fan and liquid cooling

[0043] In some embodiments, refer to Figure 1 As shown, the waste heat recovery power generation device 10 further includes an electrical load device 400. The electrical load device 400 is electrically connected to the thermoelectric generator 200. The electrical load device 400 includes various electrical appliances, such as household appliances, etc. The electrical load device 400 can directly utilize the electric energy of the waste heat recovery power generation device 10.

[0044] In some embodiments, refer to Figure 1 As shown, the waste heat recovery power generation device 10 further includes a grid power supply device 500. The grid power supply device 500 is electrically connected to the thermoelectric generator 200. The grid power supply device 500 is used to recover and redistribute the generated electricity.

[0045] In some embodiments, the waste heat recovery power generation device 10 further includes a data acquisition and processing unit. The data acquisition and processing unit is electrically connected to the thermoelectric generator 200, and the data acquisition and processing unit is used to acquire the temperature of the high-temperature end face, the temperature of the low-temperature end face, the output voltage, and the output current of the thermoelectric generator 200.

[0046] In some embodiments, refer to Figure 1 As shown, the waste heat recovery power generation device 10 further includes a control unit 600 and multiple sensors. Sensors are respectively connected to the heat source unit 100, the low-temperature end face of the thermoelectric generator 200, and the high-temperature end face of the thermoelectric generator 200. The control unit 600 is electrically connected to the multiple sensors and the data acquisition and processing unit. In the drawings, the sensors are not shown. During operation, the signals measured by each sensor enter the control unit 600 through the data acquisition and processing unit.

[0047] In some embodiments, the control unit 600 can be a computer or a PLC programmable logic controller, and is collected and processed by a specially compiled computer program.

[0048] In some of these embodiments, the above electrical connection may employ a conductive wire connection between two devices.

[0049] In summary, the waste heat recovery power generation device 10 of the present utility model can effectively solve the problem that the waste heat of the heat source unit 100, such as the outer shell of the blast furnace granulation tower, cannot directly act on steam turbines or screw machine units for power generation, realize the recovery and utilization of the waste heat of the heat source unit 100, such as the outer shell of the blast furnace granulation tower, for power generation, and has a high thermoelectric conversion rate and considerable economic benefits.

[0050] In the above embodiments, the descriptions of the various embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0051] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0052] The above-described embodiments merely represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. A waste heat recovery power generation device, characterized in that, It includes a heat source unit, a thermoelectric generator, and a circulating liquid cooling unit. The high-temperature end face of the thermoelectric generator is connected to the heat source unit, and the circulating liquid cooling unit is connected to the low-temperature end face of the thermoelectric generator. The heat source unit is used to supply heat to the high-temperature end face of the thermoelectric generator, the circulating liquid cooling unit is used to absorb heat from the low-temperature end face of the thermoelectric generator, and the thermoelectric generator is used to generate electricity by using the temperature difference between the high-temperature end face and the low-temperature end face.

2. The waste heat recovery power generation device according to claim 1, wherein The heat source unit includes a blast furnace granulation tower, and the thermoelectric generator is fixedly connected to the outer shell of the blast furnace granulation tower.

3. The waste heat recovery power generation device according to claim 1, characterized in that The circulating liquid cooling unit includes a heat absorption box and a cooling circulation pipeline. The heat absorption box is connected to the low-temperature end face of the thermoelectric generator, and the cooling circulation pipeline is connected to the heat absorption box to realize the circulation of the coolant.

4. The waste heat recovery power generation device according to claim 3, characterized in that The circulating liquid cooling unit further includes a liquid storage tank. The liquid storage tank is connected to the cooling circulation pipeline, and the cooling circulation pipeline is used to realize the circulation of the coolant in the liquid storage tank along the cooling circulation pipeline between the liquid storage tank and the heat absorption box.

5. The waste heat recovery power generation device according to claim 4, characterized in that, The circulating liquid cooling unit further includes a circulation pump. The circulation pump is installed on the cooling circulation pipeline, and the circulation pump is used to drive the coolant to circulate along the cooling circulation pipeline.

6. The waste heat recovery power generation device according to any one of claims 3 to 5, characterized in that The circulating liquid cooling unit further includes a radiator. The radiator is installed on the cooling circulation pipeline, and the radiator is used to dissipate heat from the coolant in the cooling circulation pipeline.

7. The waste heat recovery power generation device according to any one of claims 1 to 5, wherein The waste heat recovery power generation device further includes an electrical load device, and the electrical load device is electrically connected to the thermoelectric generator.

8. The waste heat recovery power generation device according to any one of claims 1 to 5, characterized in that, The waste heat recovery power generation device further includes a grid power supply device, and the grid power supply device is electrically connected to the thermoelectric generator.

9. The waste heat recovery power generation device according to any one of claims 1 to 5, characterized in that The waste heat recovery power generation device further includes a data acquisition and processing unit. The data acquisition and processing unit is electrically connected to the thermoelectric generator, and the data acquisition and processing unit is used to collect the temperature of the high-temperature end face, the temperature of the low-temperature end face, the output voltage, and the output current of the thermoelectric generator.

10. The waste heat recovery power generation device according to claim 9, characterized in that, The waste heat recovery power generation device further includes a control unit and multiple sensors. The heat source unit, the low-temperature end face of the thermoelectric generator, and the high-temperature end face of the thermoelectric generator are respectively connected with the sensors, and the control unit is electrically connected to the multiple sensors and the data acquisition and processing unit.

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