Efficient flue gas waste heat recovery cooling equipment

Abstract

The invention provides efficient flue gas waste heat recovery cooling equipment which comprises a flue gas heat exchange system which comprises a shell, a heat exchanger arranged in the shell and used for allowing high-temperature flue gas to flow through, a flow guide structure arranged in the heat exchanger and used for prolonging a flue gas flowing path, and a heat dissipation enhancing structure arranged on the outer surface of the heat exchanger; the liquid cooling circulating system comprises a water tank for storing cooling liquid and a circulating pump for driving the cooling liquid to circulate; the controller is provided with a temperature sensor and is electrically connected with the circulating pump, the temperature sensor is used for detecting the temperature of cooling liquid in the liquid cooling circulating system, and the controller is configured to dynamically adjust the running state of the circulating pump according to the detected temperature. According to the efficient flue gas waste heat recovery cooling equipment, the problems that traditional equipment is insufficient in heat exchange efficiency and unstable in cooling effect can be solved, efficient synchronization of waste heat recovery and flue gas cooling is achieved, and the energy recovery rate and the operation stability of the system are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of flue gas waste heat recovery technology, and more specifically, to a high-efficiency flue gas waste heat recovery and cooling device. Background Technology

[0002] High-temperature flue gas continuously generated in industrial production carries a large amount of waste heat. Direct emission of this waste gas not only wastes energy but also exacerbates thermal pollution and damages subsequent environmental protection equipment. Existing flue gas waste heat recovery and cooling equipment generally suffers from the following problems: low heat exchange efficiency, making it difficult to simultaneously achieve rapid cooling of flue gas and full recovery of waste heat; poor matching between the cooling system and heat exchange components, resulting in insufficient energy recovery and unstable cooling effect; and a lack of precise control and auxiliary heat dissipation structures, making it impossible to dynamically adjust the operating status according to working conditions. Summary of the Invention

[0003] This application provides at least one high-efficiency flue gas waste heat recovery and cooling device, which can solve the problems of insufficient heat exchange efficiency and unstable cooling effect of traditional equipment, realize efficient synchronization of waste heat recovery and flue gas cooling, and significantly improve energy recovery rate and system operation stability.

[0004] This application provides a high-efficiency flue gas waste heat recovery and cooling device, including: A flue gas heat exchange system includes a shell, a heat exchanger disposed inside the shell for supplying high-temperature flue gas flow, a flow guiding structure disposed inside the heat exchanger for extending the flue gas flow path, and a heat dissipation enhancement structure disposed on the outer surface of the heat exchanger. A liquid cooling circulation system includes a water tank for storing coolant and a circulation pump for driving the coolant circulation. The water tank is connected to the inner cavity of the shell through a pipeline, so that the coolant can flow through and immerse the heat exchanger to absorb the waste heat of the flue gas. The controller is equipped with a temperature sensor and is electrically connected to the circulating pump. The temperature sensor is used to detect the temperature of the coolant in the liquid cooling circulation system. The controller is configured to dynamically adjust the operating state of the circulating pump according to the detected temperature.

[0005] In one optional embodiment, the inner wall of the housing is provided with a heat insulation layer.

[0006] In one alternative embodiment, the top of the housing is provided with a removable top cover.

[0007] In one optional embodiment, the heat dissipation enhancement structure includes a plurality of first heat dissipation fins fixed to the outer wall of the heat exchange tube.

[0008] In one optional embodiment, the flow guiding structure includes a central rod and a plurality of flow deflectors fitted onto the central rod, wherein the flow deflectors are provided with a first flow guiding hole for flue gas to pass through.

[0009] In one optional embodiment, a flow guide is provided between two adjacent flow deflectors. The flow guide is configured as a conical structure, and a second flow guide hole is provided on the side wall of the flow guide.

[0010] In one optional embodiment, the inlet of the circulating pump is connected to the water tank via an outlet pipe, the outlet is connected to the housing via an inlet pipe, and the housing is connected to the water tank via a return pipe.

[0011] In one optional embodiment, a first flow regulating valve is provided on the inlet pipe, and a second flow regulating valve is provided on the return pipe.

[0012] In one optional embodiment, the liquid cooling circulation system further includes an auxiliary heat dissipation system, which includes a second heat dissipation fin disposed on the outer wall of the water tank and a heat dissipation fan for forced air cooling of the second heat dissipation fin. The heat dissipation fan is electrically connected to and controlled by the controller.

[0013] In one optional implementation, the controller is provided with a display screen for displaying temperature and operating status and operation buttons for parameter preset.

[0014] The above-mentioned technical solution of this application has the following beneficial technical effects: The high-efficiency flue gas waste heat recovery and cooling equipment provided in this application effectively extends the residence time of high-temperature flue gas within the heat exchange tubes and optimizes its flow path through a flow-guiding structure installed inside the heat exchange tubes, enhancing heat exchange between the flue gas and the inner wall of the heat exchange tubes. Simultaneously, the heat dissipation enhancement structure installed on the outer wall of the heat exchange tubes significantly increases the contact area between the heat exchange tubes and the coolant, thereby substantially improving heat exchange efficiency. Combined with an automatic control system consisting of a controller, temperature sensor, and circulating pump, the system can monitor the coolant temperature in real time and dynamically adjust the coolant circulation rate, ensuring that the equipment can achieve full recovery and rapid cooling of flue gas waste heat under different operating conditions. This integrated design effectively reduces energy waste, and the recovered waste heat can be used for secondary utilization, significantly reducing production energy consumption.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This illustration shows a structural schematic diagram of a high-efficiency flue gas waste heat recovery and cooling device provided in an embodiment of this application; Figure 2 It shows Figure 1 A diagram from another perspective; Figure 3 It shows Figure 1 A diagram from yet another perspective; Figure 4 It shows Figure 1 Internal assembly diagram of the housing; Figure 5 It shows Figure 4 A schematic diagram of the heat exchanger assembly in the diagram; Figure 6 It shows Figure 5 A magnified view of the flow guiding structure in the image; In the picture: 100. Flue gas heat exchange system; 110. Shell; 120. Heat exchanger; 121. Inlet pipe; 122. Exhaust pipe; 130. Heat dissipation enhancement structure; 131. First heat dissipation fins; 140. Flow guiding structure; 141. Central rod; 142. Baffle plate; 143. First flow guiding hole; 144. Flow guiding shroud; 145. Second flow guiding hole; 150. Thermal insulation layer; 160. Top cover; 200. Liquid cooling circulation system; 21. 0. Water tank; 211. Filling port; 220. Base; 230. Support leg; 240. Viewing window; 250. Circulation pump; 251. Water outlet pipe; 252. Water inlet pipe; 253. First flow regulating valve; 260. Return pipe; 261. Second flow regulating valve; 270. Auxiliary heat dissipation system; 271. Second heat dissipation fins; 272. Heat dissipation fan; 300. Controller; 310. Display screen; 320. Operation button. Detailed Implementation

[0018] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0019] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0020] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0021] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] refer to Figures 1 to 6This application provides a high-efficiency flue gas waste heat recovery and cooling device, including a flue gas heat exchange system 100, a liquid cooling circulation system 200, and a controller 300. The flue gas heat exchange system 100 includes a housing 110, a heat exchanger 120 disposed inside the housing 110 for supplying high-temperature flue gas flow, a flow guiding structure 140 disposed inside the heat exchanger 120 for extending the flue gas flow path, and a heat dissipation enhancement structure 130 disposed on the outer surface of the heat exchanger 120. The liquid cooling circulation system 200 includes a water tank 2 for storing coolant. The system includes a 10 and a circulation pump 250 (e.g., a self-priming pump) for driving the coolant circulation. A water tank 210 is connected to the inner cavity of the housing 110 via a pipe, allowing the coolant to flow through and submerge the heat exchanger 120 to absorb waste heat from the flue gas. A controller 300 is located in the housing 110 and includes a temperature sensor (not shown) electrically connected to the circulation pump 250. The temperature sensor detects the temperature of the coolant in the liquid cooling circulation system 200, and the controller 300 is configured to dynamically adjust the operating state of the circulation pump 250 based on the detected temperature. During operation, high-temperature flue gas enters the heat exchanger 120 inside the housing 110. The internal flow guiding structure 140 agitates and prolongs the flue gas flow path, increasing the heat exchange time. The external heat dissipation enhancement structure 130 increases the contact area with the coolant inside the housing 110, accelerating the transfer of waste heat from the flue gas to the coolant within the heat exchanger 120, thus enhancing the cooling effect and waste heat recovery efficiency. Simultaneously, the circulating pump 250 drives the coolant in the water tank 210 to flow through the shell 110 and immerse the outer surface of the heat exchanger 120 and the heat dissipation enhancement structure 130, absorbing heat from the flue gas. The controller 300 monitors the coolant temperature through a temperature sensor and automatically adjusts the speed or starts / stops the circulating pump 250 according to a set threshold, thereby achieving closed-loop control of the flue gas cooling intensity and waste heat recovery rate. Through the synergy of mechanical structure and automatic control, the problems of insufficient heat exchange efficiency and unstable cooling effect of traditional equipment can be solved, achieving efficient synchronization of waste heat recovery and flue gas cooling, significantly improving energy recovery rate and system operational stability.

[0024] Optionally, an insulation layer 150 is provided on the inner wall of the shell 110. During equipment operation, the insulation layer 150 can effectively reduce the loss of heat from the inside of the shell 110 to the external environment, transferring more heat to the coolant, thereby reducing unnecessary heat loss and allowing more waste heat from the flue gas to be captured by the recovery system, thus directly improving the overall heat recovery efficiency of the equipment. In specific configurations, the insulation layer 150 can be a high-temperature resistant and moisture-proof ceramic fiber felt or aluminum silicate fiber board laid on the inner wall of the shell 110, or a high-temperature insulation coating (such as aerogel composite coating) applied to the inner wall of the shell 110.

[0025] Optionally, the top of the housing 110 is provided with a removable top cover 160. The removable top cover 160 allows operators to open the housing 110 and directly inspect, clean, or replace core components such as the heat exchanger 120, the flow guiding structure 140, and the heat dissipation enhancement structure 130. This helps to simplify the daily maintenance and troubleshooting of the equipment, reduce maintenance difficulty and downtime, and improve the reliability and service life of the equipment.

[0026] Optionally, the heat exchanger 120 includes heat exchange tubes, an inlet pipe 121, and an outlet pipe. The inlet and outlet ends of the heat exchange tubes are connected to the inlet pipe 121 and the outlet pipe, respectively. The inlet pipe 121 and the outlet pipe extend out of the housing 110 to the outside. During use, the inlet pipe 121 and the outlet pipe are connected to an industrial flue gas conveying pipeline. The inlet pipe 121 allows high-temperature flue gas to pass through the heat exchanger 120, and the outlet pipe discharges the cooled flue gas. In a specific configuration, both the inlet pipe 121 and the outlet pipe are detachably connected to the heat exchange tubes, which facilitates disassembly, assembly, and maintenance.

[0027] Optionally, the heat dissipation enhancement structure 130 includes a plurality of first heat dissipation fins 131 fixed to the outer wall of the heat exchange tube. In this embodiment, the heat dissipation enhancement structure 130 is disposed on both sides and the bottom side of the heat exchange tube in the horizontal direction, and the heat dissipation enhancement structure 130 on each side of the heat exchange tube extends to the bottom of the heat exchange tube and is immersed in the circulating coolant. When the coolant flows through, these fins can greatly increase the contact area between the heat exchange tube and the coolant. The increase in contact area can significantly enhance the heat conduction capacity of the heat exchange tube to the coolant, so that the waste heat of the flue gas can be transferred to the coolant faster and in greater quantities, thereby accelerating the cooling process of the flue gas and improving the waste heat recovery rate.

[0028] Optionally, the flow guiding structure 140 includes a central rod 141 and multiple baffles 142 fitted onto the central rod 141. Each baffle 142 has a first flow guiding hole 143 for the passage of flue gas. In this embodiment, each baffle 142 has multiple first flow guiding holes 143 evenly distributed around its perimeter. During equipment operation, when flue gas flows through the heat exchange tube, the baffles 142 obstruct the rapid flow of flue gas, prolonging its residence time within the heat exchange tube. Simultaneously, the flue gas is forced to pass through the first flow guiding holes 143, creating a diversion and ensuring sufficient contact between the flue gas and the inner wall of the heat exchange tube. This design effectively prolongs the residence time of the flue gas within the heat exchange tube, disrupts the boundary layer of the flue gas flow, and enhances convective heat transfer between the flue gas and the inner wall of the heat exchange tube, thereby significantly improving heat exchange efficiency. In specific configurations, the flow guiding structure 140 is detachably connected to the heat exchange tube for easy cleaning or maintenance.

[0029] Optionally, a flow guide shroud 144 is provided between two adjacent baffles 142. The flow guide shroud 144 is a conical structure, and a second flow guide hole 145 is provided on the side wall of the flow guide shroud 144. During equipment operation, after the flue gas passes through the baffles 142, it can be guided by the flow guide shroud 144 to converge towards the center of the heat exchange tube and flow out evenly from the flow guide hole on the side. This design can further optimize the flue gas distribution, forcing the flue gas to more evenly and fully flush the inner wall of the heat exchange tube, avoiding insufficient local heat exchange, and making the heat transfer more uniform and efficient.

[0030] Optionally, the water tank 210 and the housing 110 are stacked vertically. In this embodiment, the water tank 210 is located below the housing 110, which saves space in the equipment.

[0031] Optionally, the water tank 210 is provided with a base 220 at its bottom, and support legs 230 are fixedly installed at each of the four corners of the base 220. The base 220 and the support legs 230 together support the entire device, improving the stability of the device and preventing shaking during operation. Of course, in other embodiments, the support legs 230 can also be replaced with casters for easy movement.

[0032] Optionally, a filler port 211 is provided on the top of the water tank 210. Before use, the operator can add or replenish coolant to the water tank 210 through the filler port 211. It should be understood that during use, the filler port 211 should be kept closed to prevent coolant overflow.

[0033] Optionally, a viewing window 240 is provided on the side wall of the water tank 210. During use, the operator can observe the level and cleanliness of the coolant in the water tank 210 in real time through the viewing window 240, so as to facilitate timely replenishment or replacement.

[0034] Optionally, the inlet of the circulating pump 250 is connected to the water tank 210 via the outlet pipe 251, and the outlet is connected to the casing 110 via the inlet pipe 252. The casing 110 is connected to the water tank 210 via the return pipe 260. In specific configurations, the circulating pump 250 can be a ZW-type self-priming centrifugal pump with a flow rate of 5-10 m³ / h and a head of 10-15 m. During operation, the circulating pump 250 draws water from the water tank 210, sends it through the inlet pipe 252 into the casing 110 to enclose the heat exchanger 120, and the heated water flows back to the water tank 210 via the return pipe 260.

[0035] Optionally, a first flow regulating valve 253 is installed on the inlet pipe 252, and a second flow regulating valve 261 is installed on the return pipe 260. During equipment operation, the flow rate of coolant flowing into and out of the housing 110 can be precisely controlled by manually or automatically adjusting these two valves, allowing the system to flexibly adapt to flue gas conditions of different temperatures and flow rates. For example, when the flue gas temperature is high and the heat is significant, the valve can be opened wider to increase the coolant flow rate and enhance heat dissipation; conversely, the flow rate can be reduced to save pump energy, thus achieving optimized adjustment of operating parameters.

[0036] Optionally, the liquid cooling circulation system 200 also includes an auxiliary heat dissipation system 270. The auxiliary heat dissipation system 270 includes second heat dissipation fins 271 disposed on the outer wall of the water tank 210 and a cooling fan 272 that provides forced air cooling to the second heat dissipation fins 271. The cooling fan 272 is electrically connected to and controlled by the controller 300. Specifically, the cooling fan 272 can be an axial flow cooling fan, model FA-40, with a speed of 2800 r / min and a power of 370W. When the coolant temperature rises in the water tank 210, the controller 300 can activate the cooling fan 272, forcing airflow over the second heat dissipation fins 271 to accelerate the dissipation of coolant from the water tank 210 to the air. This provides secondary cooling capacity for the coolant, especially when dealing with high-heat-load flue gas or high ambient temperatures, effectively controlling the overall temperature of the coolant, maintaining the cooling capacity of the circulation system, and ensuring stable operation of the cooling circulation system.

[0037] Optionally, the controller 300 includes a main control module, a signal acquisition module, and a drive module. The main control module is the core component, responsible for receiving and processing various signals and issuing control commands. The signal acquisition module is connected to a temperature sensor, converting analog temperature signals into digital signals and transmitting them to the main control module. The drive module is connected to the self-priming pump and the cooling fan 272, respectively, to execute the start / stop and power adjustment commands issued by the main control module. In specific settings, the controller 300 can be a PLC controller, specifically an S7-200SMART model.

[0038] Optionally, the temperature sensor of the controller 300 has a probe that extends through the side wall of the housing 110 into the coolant inside the housing 110 to detect the temperature of the coolant. Specifically, a PT100 platinum resistance temperature sensor can be used, with a measurement range of -50℃ to 300℃ and an accuracy of ±0.1℃. During use, the temperature sensor detects the temperature of the coolant inside the housing 110 in real time and transmits the temperature signal to the controller 300, enabling the controller 300 to control the circulation pump 250 and the cooling fan 272. For example, when the detected temperature is higher than a preset threshold, the controller 300 automatically controls the cooling fan 272 to start and adjust its speed, while simultaneously increasing the operating power of the self-priming pump to accelerate the coolant circulation and enhance heat dissipation; when the detected temperature is lower than the preset threshold, the controller 300 controls the cooling fan 272 to stop operating and reduces the power of the self-priming pump to save energy. Of course, in other embodiments, the temperature sensor can also be located inside the housing 110 and electrically connected to the controller 300.

[0039] Optionally, the controller 300 is equipped with a display screen 310 for displaying temperature and operating status, and operation buttons 320 for parameter preset. During equipment operation, operators can use the buttons to set desired temperature thresholds, operating modes, and other parameters, and can monitor the coolant temperature, circulating pump 250, and cooling fan 272's operating status in real time on the display screen 310. This design provides an intuitive human-machine interface, making operation and monitoring simple and convenient, enabling flexible management from automated operation to manual intervention, and improving the equipment's intelligence and user-friendliness. Of course, in practical implementation, the operation buttons 320 are also used for manual control of equipment operation.

[0040] The high-efficiency flue gas waste heat recovery and cooling equipment provided in this application effectively extends the residence time of high-temperature flue gas within the heat exchange tubes and optimizes its flow path through a flow-guiding structure installed inside the heat exchange tubes, enhancing heat exchange between the flue gas and the inner wall of the heat exchange tubes. Simultaneously, the heat dissipation enhancement structure installed on the outer wall of the heat exchange tubes significantly increases the contact area between the heat exchange tubes and the coolant, thereby substantially improving heat exchange efficiency. Combined with an automatic control system consisting of a controller, temperature sensor, and circulating pump, the system can monitor the coolant temperature in real time and dynamically adjust the coolant circulation rate, ensuring that the equipment can achieve full recovery and rapid cooling of flue gas waste heat under different operating conditions. This integrated design effectively reduces energy waste, and the recovered waste heat can be used for secondary utilization, significantly reducing production energy consumption.

[0041] One or more embodiments in this specification are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of one or more embodiments in this specification should be included within the protection scope of this application.

[0042] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A high-efficiency flue gas waste heat recovery and cooling device, characterized in that, include: A flue gas heat exchange system includes a shell, a heat exchanger disposed inside the shell for supplying high-temperature flue gas flow, a flow guiding structure disposed inside the heat exchanger for extending the flue gas flow path, and a heat dissipation enhancement structure disposed on the outer surface of the heat exchanger. A liquid cooling circulation system includes a water tank for storing coolant and a circulation pump for driving the coolant circulation. The water tank is connected to the inner cavity of the shell through a pipeline, so that the coolant can flow through and immerse the heat exchanger to absorb the waste heat of the flue gas. The controller is equipped with a temperature sensor and is electrically connected to the circulating pump. The temperature sensor is used to detect the temperature of the coolant in the liquid cooling circulation system. The controller is configured to dynamically adjust the operating state of the circulating pump according to the detected temperature.

2. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The inner wall of the shell is provided with a heat insulation layer.

3. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The top of the housing is provided with a removable top cover.

4. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The heat dissipation enhancement structure includes multiple first heat dissipation fins fixed to the outer wall of the heat exchange tube.

5. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The flow guiding structure includes a central rod and multiple flow deflectors fitted onto the central rod. The flow deflectors have a first flow guiding hole for the flue gas to pass through.

6. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 5, characterized in that, A flow guide is provided between two adjacent flow deflectors. The flow guide is configured as a conical structure, and a second flow guide hole is provided on the side wall of the flow guide.

7. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The inlet of the circulating pump is connected to the water tank via an outlet pipe, the outlet is connected to the housing via an inlet pipe, and the housing is connected to the water tank via a return pipe.

8. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 7, characterized in that, A first flow regulating valve is installed on the inlet pipe, and a second flow regulating valve is installed on the return pipe.

9. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The liquid cooling circulation system also includes an auxiliary heat dissipation system, which includes a second heat dissipation fin disposed on the outer wall of the water tank and a heat dissipation fan that provides forced air cooling to the second heat dissipation fin. The heat dissipation fan is electrically connected to and controlled by the controller.

10. The high-efficiency flue gas waste heat recovery and cooling equipment according to claim 1, characterized in that, The controller is equipped with a display screen for showing temperature and operating status, and operation buttons for parameter preset.

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