Biological new energy heat production device and method based on straw and excrement coupling self-heating fermentation

Abstract

The invention discloses a biological new energy heat production device and method based on straw and excrement coupling self-heating fermentation, and belongs to the technical field of heat supply equipment. The device comprises a fermentation box body, a heat conduction pipe body device, a heat dissipation pipe body device, a water supplementing funnel and a circulating pump, the heat conduction pipe body device is arranged at the central part of the fermentation box body, and the heat dissipation pipe body device is arranged in an area needing heat supply outside the fermentation box body; the upper end of the heat-conducting pipe body device is connected with a water outlet of the circulating pump through a heat-conducting pipe body water inlet pipe, and the lower end is connected with a water inlet of the radiating pipe body device through a heat-conducting pipe body water outlet pipe; a water inlet of the circulating pump is respectively connected with a radiating pipe body water outlet pipe and a water replenishing funnel water outlet pipe through a three-way pipeline. The biomass new energy heat production device is reasonable in structure and stable in operation, straw and excrement can be effectively utilized, efficient conversion of biomass energy is achieved, good continuous heat supply capacity and low-temperature adaptability are achieved, and the biomass new energy heat production device is suitable for various application scenes such as clean heat supply and greenhouse planting in rural areas.

Description

Technical Field

[0001] This invention belongs to the field of heating equipment technology, specifically relating to a bio-new energy heat generation device and method based on the coupled self-heating fermentation of straw and manure. Background Technology

[0002] Biomass energy is a form of renewable energy that converts biomass into energy. As an important renewable energy source, biomass energy relies on photosynthesis to convert solar radiation into chemical energy, which is then stored using organic biomass such as straw and manure. Among various biomass energy utilization technologies, aerobic fermentation technology, through the metabolic activities of microorganisms, decomposes organic matter into water and carbon dioxide, while releasing a large amount of usable heat, making it a highly promising development direction. However, current aerobic fermentation heat generation technologies based on straw or manure still face many challenges that urgently need to be addressed.

[0003] (1) Material settling problem: Due to the loose texture and low bulk density of raw materials such as straw and manure, the volume of materials will shrink significantly during fermentation as organic matter decomposes, resulting in non-uniform settling. This situation may damage the heat extraction pipeline and require frequent replenishment of materials to maintain the effective operation of the fermentation system. It may also lead to imbalances in environmental parameters such as temperature and oxygen concentration, thereby affecting heat production efficiency.

[0004] (2) Limitations on heat generation time: If the material continues to remain in the fermentation space after the high-temperature fermentation stage, it will occupy a large amount of effective volume, hindering the fermentation process of subsequent materials and affecting the continuity and overall efficiency of biomass heat generation. Existing practices are mostly limited to the form of bioreactors with simple structure and single function, which limits the full utilization potential of fermentation heat as an energy source.

[0005] (3) Poor environmental adaptability: The current technology is more successful in warm environments, but fermentation is difficult in frozen environments. It usually requires additional auxiliary heating equipment to raise the temperature, which increases costs and reduces production efficiency, limiting the promotion and use of the technology in cold regions.

[0006] Therefore, developing a technical solution that can ensure stable and efficient heat production from biomass over a long period of time has become one of the urgent problems to be solved in the field of biomass energy. Summary of the Invention

[0007] In view of the shortcomings of existing technologies, this invention discloses a bio-new energy heat generation device and method based on the coupled self-thermal fermentation of straw and manure. The device includes key components such as a fermentation chamber, a heat-conducting pipe system, a heat dissipation pipe system, a circulating pump, a blower-oxygen supply system, a dual-chain material adjustment mechanism, and an intelligent control system. By uniformly mixing the fermentation substrate (composed of crushed straw and livestock manure in a certain mass ratio) with high-efficiency fermentation bacteria in a specific ratio and then loading it into the fermentation chamber, continuous and stable bio-thermal energy is generated under aerobic conditions through microbial metabolism. The generated heat is absorbed by circulating water in the heat-conducting pipe system and supplied externally through the heat dissipation device, thus constructing a novel heat generation system integrating biomass energy conversion, heat recovery, and intelligent control.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] This invention provides a bio-new energy heat-generating device based on the coupled self-heating fermentation of straw and manure, comprising a fermentation tank for holding the coupled fermentation pile of straw and manure, a heat-conducting pipe device, a heat-dissipating pipe device, a water supply funnel, and a circulation pump; the heat-conducting pipe device is located in the center of the fermentation tank and is enclosed within the coupled fermentation pile of straw and manure; the heat-dissipating pipe device is located in the area outside the fermentation tank where heating is required; the upper end of the heat-conducting pipe device is connected to the outlet of the circulation pump through a heat-conducting pipe inlet pipe, and the lower end of the heat-conducting pipe device is connected to the inlet of the heat-dissipating pipe device through a heat-conducting pipe outlet pipe; the inlet of the circulation pump is connected to the outlet pipe of the heat-dissipating pipe device and the outlet pipe of the water supply funnel respectively through a three-way pipe.

[0010] Preferably, a first detection hole and a second detection hole are provided on the side wall of the fermentation chamber. The first detection hole is located at 1 / 2 of the height of the side wall of the fermentation chamber, and the second detection hole is located at 1 / 4 of the height of the side wall of the fermentation chamber. The first and second detection holes can be used to insert a temperature sensor or an oxygen sensor to detect the temperature or oxygen concentration inside the fermentation chamber. The monitoring points corresponding to the first and second detection holes are the first detection point and the second detection point, respectively. The first detection point is located in the central area inside the fermentation chamber, and the second detection point is located directly below the first detection point and in the area at 1 / 4 of the height of the fermentation chamber.

[0011] Preferably, an air duct is fixedly installed at the bottom of the fermentation chamber, and the air duct is connected to a blower to provide air circulation for the fermentation process; the bottom of the fermentation chamber is designed as an open structure, and the fermentation pile inside is laid on the upper surface of the double-chain rack; the double-chain rack is located below the bottom of the fermentation chamber and is fixedly installed on the support legs at the four corners of the fermentation chamber through its two sides; a fixing frame is also provided in the center of the double-chain rack to enhance its operational stability; baffles are provided on the upper sides of the double-chain rack to effectively prevent the fermentation material from slipping during operation.

[0012] Preferably, the top of the fermentation chamber is covered from bottom to top with a molecular membrane and a plastic membrane, and an exhaust fan is installed on the outer wall of the fermentation chamber between the molecular membrane and the plastic membrane. The molecular membrane has a special microporous structure that selectively allows oxygen to pass through while preventing the large-scale escape of water vapor and odorous gases. This helps maintain an aerobic environment inside the fermentation chamber without compromising the airtightness, promoting the metabolic activity of aerobic microorganisms and improving fermentation efficiency. The plastic membrane further enhances the overall airtightness and prevents air turbulence from interfering with the fermentation process. The exhaust fan works in conjunction with the molecular membrane to collect and discharge the carbon dioxide (CO2) mixture diffused through the molecular membrane. This mixture can be connected to a gas fertilizer recovery device for collection and utilization, achieving comprehensive resource utilization and environmentally friendly emissions.

[0013] Preferably, the inlet pipe of the heat-conducting pipe, the outlet pipe of the heat-conducting pipe, the outlet pipe of the heat-dissipating pipe, and the outlet pipe of the water replenishment funnel are all equipped with switch control valves; the heat-dissipating pipe device is equipped with an exhaust valve.

[0014] The present invention also discloses a method for generating heat from a coupled fermentation pile of straw and manure using the aforementioned device, comprising the following steps:

[0015] S1. Feed the crop straw into a crusher and crush it into straw fragments with a length not exceeding 5cm. Then, mix the straw fragments with livestock and poultry manure at a mass ratio of 1:(4-6). Add water appropriately during the mixing process to control the moisture content of the final mixture within the range of 55%-60% to obtain the fermentation base material.

[0016] S2. Mix the fermentation substrate obtained in step S1 with the fermentation inoculum at a mass ratio of 1:1000, pile them into a fermentation pile with a height of 2.0 to 2.5 m, cover with plastic film and let stand to heat up. When the accumulated daily temperature above the center temperature of the pile reaches 30 to 40℃, the pretreatment of the fermentation substrate is completed and the fermentation material is obtained.

[0017] S3. Load the fermentation material from step S2 into the fermentation chamber and pile it into a fermentation pile inside the chamber; then cover it with a molecular membrane and a plastic film in sequence to seal the fermentation pile; at the same time, start the blower and supply air into the fermentation chamber through the air pipe to ensure that the oxygen concentration inside the chamber is controlled within the range of 2% to 8% so as to ensure that the fermentation process is under a suitable oxygen concentration for heat production, thus entering the static fermentation heat production stage.

[0018] S4. Temperature sensors are inserted into the first and second detection holes on the side wall of the fermentation chamber to monitor temperature changes near the first and second detection points in real time. When the temperature near the first detection point is ≥45℃, the circulation pump is started and cold water is injected through the water replenishment funnel. The cold water flows through the outlet pipe of the water replenishment funnel and into the inlet pipe of the heat-conducting pipe under the drive of the circulation pump. It enters the heat-conducting pipe device to absorb the heat generated by the fermentation pile. After being heated into hot water, it enters the heat dissipation pipe device through the outlet pipe of the heat-conducting pipe to achieve heat supply and energy release to the external target area. When the temperature near the second detection point is lower than 35℃, the low-temperature material at the bottom of the fermentation chamber can be transported to the outside of the chamber through the double chain conveyor. At the same time, the high-temperature fermentation material at the top of the fermentation chamber falls naturally to the bottom. The molecular membrane and plastic film on the top of the fermentation chamber are removed, and new fermentation material is added according to step S3 to maintain stable operation.

[0019] S5. Once the system enters a stable operating phase, close the switch control valve on the water outlet pipe of the water replenishment funnel. The high-temperature water releases heat in the heat dissipation tube device and is discharged as low-temperature water through the heat dissipation tube outlet pipe. It then re-enters the heat conduction tube device via the circulation pump, forming a closed-loop circulation system, thereby achieving a continuous and stable heating effect.

[0020] Preferably, in step S2, the fermentation substrate is prepared from the following raw materials in parts by weight: the effective viable count is 1.0 × 10⁻⁶. 8 Two samples of Bacillus polymyxa with a cfu / g concentration, each containing 1.0 × 10⁻⁶ effective viable cells. 8The following ingredients were used: 1 part of *Penicillium griseofulvum* (cfu / g), 3 parts of highland barley flour, 3 parts of brown sugar, 15 parts of urea, and 60 parts of rice bran; *Paenibacillus polymyxa* (classification name: *Paenibacillus polymyxa*, deposited at: China General Microbiological Culture Collection Center, address: No. 3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing, deposited on: August 6, 2020, registration number CGMCC NO: 20494); *Penicillium griseofulvum* (Latin name: *Penicillium griseofulvum*, deposited at: China General Microbiological Culture Collection Center, address: No. 3, Courtyard 1, Beichen West Road, Chaoyang District, Beijing, deposited on: August 6, 2020, registration number CGMCC NO: 19940).

[0021] Preferably, in step S3, the oxygen concentration inside the fermentation chamber can be detected by inserting an oxygen sensor into the first detection hole to ensure that the fermentation process is in a suitable aerobic environment for heat production.

[0022] Preferably, in step S3, the height of the fermentation box is 2.5 to 3.0 m; the height of the fermentation pile inside the fermentation box is required to be greater than 2 m, so that the fermentation material can form a thick heat storage layer, which can effectively avoid heat loss in the fermentation pile.

[0023] Preferably, in step S4, when the height of the fermentation material above the top of the heat-conducting pipe device is less than 0.5m, new fermentation material can be added according to step S3 to ensure heat generation efficiency and heat extraction uniformity; the vertical distance between the upper surface of the double chain and the bottom of the fermentation box is 10-15cm to effectively discharge low-temperature material.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) This invention achieves multiple control functions for gas exchange, humidity control, and waste gas treatment during fermentation by setting a composite sealing structure composed of a molecular membrane and a plastic membrane at the top of the fermentation chamber and configuring an exhaust fan between the two. This not only ensures the efficient and stable operation of the fermentation process but also provides the possibility for the resource utilization of by-products such as CO2, thereby improving the overall energy efficiency of the system.

[0026] (2) This invention involves crushing crop straw into straw fragments within a specific particle size range, mixing them with livestock and poultry manure according to a set ratio, and then adding self-made high-efficiency fermentation bacteria for thorough mixing before fermentation pretreatment. During the fermentation pretreatment process, the fermentation pile must be controlled to meet the following requirement: the accumulated daily temperature when the center temperature of the pile is ≥50℃ reaches 30-40℃. Only after meeting this heat accumulation standard can a fermentation material with excellent physical properties be obtained—that is, a mature fermentation material with fine particles, suitable moisture content, and a compact structure. This fermentation material has good uniformity and stability, and can effectively avoid non-uniform settling after entering the subsequent fermentation chamber, thereby preventing compression or damage to the internal heat conduction pipes and improving the system's operational stability and heat generation efficiency. If the aforementioned cumulative daily temperature target is not met, the physical properties of the fermented material will be poor. Upon entering the fermentation chamber, the loose structure and tendency to collapse will cause a continuous decrease in the material height within the chamber's hopper, necessitating frequent replenishment of fresh material and reducing system efficiency. Furthermore, during settling, the material may develop a central void, creating localized cavities that interrupt heat conduction and affect the continuity and stability of the overall heat production cycle. This invention, by setting a control target for cumulative daily temperature, effectively regulates the quality of the fermented material, thus laying a solid foundation for subsequent efficient and stable biomass energy conversion.

[0027] (3) The fermentation substrate used in this invention is self-prepared, and its components include: Bacillus polymyxa, Penicillium griseus, highland barley flour, brown sugar, urea, and rice bran. Among them, Bacillus polymyxa has the unique property of maintaining certain biological activity even under frozen and low-temperature conditions. To promote its rapid propagation, in addition to adding conventional carbon and nitrogen nutrient sources (such as brown sugar, urea, and rice bran), this invention also introduces a special functional carbon source—highland barley flour. This highland barley flour is a fine powder directly processed and pulverized from highland barley grains grown at high altitudes. It is inexpensive and widely available, and its content of highland barley β-glucan is approximately 6.5%–8%. Highland barley β-glucan can not only significantly promote the growth and metabolic activity of Bacillus polymyxa, but also effectively enhance its heat production capacity under low-temperature conditions. This invention, through the synergistic effect of this strain and a functional carbon source, enables the self-heating start-up of fermentation materials in frozen environments and maintains the high-efficiency activity of the microbial community within the fermentation pile. This significantly improves the heating rate, duration of high-temperature operation, and overall heat production stability of the fermentation pile. Application verification shows that this fermentation substrate enables the system to continuously and stably generate heat for more than three months under cold conditions, significantly improving the applicability and operational efficiency of biomass fermentation heat production systems in low-temperature environments. This provides key technical support for the promotion and application of straw and manure coupled fermentation technology in high-altitude and cold regions.

[0028] (4) This invention provides a biomass energy heat generation device based on the coupled fermentation of straw and manure, including key components such as a fermentation tank, a heat conduction pipe device, a heat dissipation pipe device, a circulating pump, a double-chain material adjustment mechanism, and an intelligent control system, which can achieve continuity and stability in the biomass fermentation heat generation process. By inserting temperature sensors into the first and second detection holes set on the side wall of the fermentation tank, the temperature changes in the first and second detection point areas within the fermentation pile can be monitored in real time.

[0029] When the temperature at the first detection point reaches or exceeds 45°C, it indicates that the fermentation pile has entered the high-efficiency heat generation stage. At this time, the intelligent controller automatically starts the circulation pump and injects cold water through the water replenishment funnel. The cold water sequentially enters the heat conduction pipe device through the water outlet pipe of the water replenishment funnel and the water inlet pipe of the heat conduction pipe body. After absorbing the heat generated by the fermentation pile, it is heated into hot water and then flows into the heat dissipation pipe device through the water outlet pipe of the heat conduction pipe body, thereby realizing the heating and energy recovery of the external target area.

[0030] When the temperature at the second detection point is detected to be below 35℃, it indicates that the lower part of the fermentation tank has entered a low-temperature inactivation state. At this time, the intelligent controller activates the dual-chain drive device (e.g., an electric geared motor), triggering the dual-chain operation to discharge the low-temperature inactivated material at the bottom of the fermentation tank to the outside of the tank for use as organic fertilizer. Simultaneously, the material still in the high-temperature fermentation state at the top falls naturally to fill the bottom space, achieving dynamic renewal of the material inside the fermentation tank. Subsequently, the molecular membrane and plastic film covering the top of the fermentation tank are removed, and new fermentation material is added according to the established process to maintain the continuous and stable operation of the system and its efficient heat generation capacity.

[0031] In summary, this invention achieves continuous and stable heat production from biomass energy through a combination of multi-point temperature monitoring and intelligent control strategies, effectively avoiding heat interruptions caused by temperature fluctuations and ensuring that the fermentation process is always in an optimal heat production state. The intelligent control system (not shown in the figure) configured in the system can automatically start and stop key equipment based on real-time sensor data, improving the system's automation level. Simultaneously, the invention employs a dual-chain material discharge and dynamic material renewal mechanism, effectively preventing fermentation pile collapse and cavity phenomena, extending the fermentation cycle, and improving thermal energy utilization efficiency. Optimized design in the inoculum formulation and fermentation substrate ratio enables the system to maintain good self-heating start-up capability even in low-temperature or frozen environments, significantly enhancing the device's adaptability to different climatic conditions and broadening its application range in cold regions. Furthermore, this invention utilizes a composite sealing structure of molecular membrane and plastic membrane, used in conjunction with an exhaust fan, which not only effectively controls the escape of odorous gases but also enables the discharge of mixed gases such as carbon dioxide (CO2), providing possibilities for gas fertilizer recovery and comprehensive resource utilization, further improving the system's environmental performance. This invention realizes the efficient resource utilization of agricultural straw and livestock manure waste, and constructs a biomass fermentation heat generation system with reasonable structure and stable operation. It has good prospects for promotion and application, and provides strong technical support for clean heating and sustainable development of renewable energy in rural areas. Attached Figure Description

[0032] Figure 1 A schematic diagram of the overall structure of the heat-generating device provided by the present invention;

[0033] Figure 2 This is a front view of the heat-generating device provided by the present invention;

[0034] Figure 3 The temperature change trend graphs of Example 2 (RAb), Comparative Example 1 (RA), and Comparative Example 2 (CK1) during the fermentation process are shown.

[0035] Figure 4 The variation trend of the settling ratio of the pile material in Example 2 (RAb) and Comparative Example 3 (CK2) of the present invention during the fermentation process;

[0036] In the diagram: 1 Fermentation chamber, 11 First detection hole, 111 First detection point, 12 Second detection hole, 121 Second detection point, 13 Molecular membrane, 14 Plastic film, 2 Heat conduction pipe device, 21 Heat conduction pipe inlet pipe, 22 Heat conduction pipe outlet pipe, 23 Fixing frame, 3 Heat dissipation pipe device, 31 Heat dissipation pipe outlet pipe, 4 Water replenishment funnel, 41 Water replenishment funnel outlet pipe, 5 Circulation pump, 6 Air guide pipe, 7 Blower, 8 Support leg, 9 Double chain, 91 Baffle, 10 Exhaust fan. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0040] Example 1

[0041] This embodiment provides a bio-new energy heat generation device based on the coupled self-heating fermentation of straw and manure. (See attached document.) Figure 1 and Figure 2 As shown.

[0042] The device includes: a fermentation chamber 1 for holding the coupled fermentation pile of straw and manure; a heat-conducting pipe device 2 located in the center of the fermentation chamber 1 and completely enclosed by the fermentation pile, used to absorb the heat generated during fermentation; a heat-dissipating pipe device 3 located in the target area requiring heating (such as a greenhouse or livestock house); a water replenishment funnel 4 located at the top of the system for replenishing the system with cold water; and a circulation pump 5 for driving the water flow to circulate between the heat-conducting pipe device and the heat-dissipating pipe device. The upper end of the heat-conducting pipe device 2 is connected to the outlet of the circulation pump 5 via a heat-conducting pipe inlet pipe 21, and the lower end is connected to the inlet of the heat-dissipating pipe device 3 via a heat-conducting pipe outlet pipe 22; the inlet of the circulation pump 5 is connected to the heat-dissipating pipe outlet pipe 31 and the water replenishment funnel outlet pipe 41 via a three-way pipe. Furthermore, on the inlet pipe 21, outlet pipe 22, outlet pipe 31, and outlet pipe 41 of the water supply funnel, a switch control valve is provided to flexibly adjust the water flow according to the system operating status. The heat dissipation pipe device 3 is also equipped with an air vent valve 32 to discharge the air accumulated inside the system pipes, prevent air blockage that could lead to poor water flow or local overheating, maintain the pressure stability of the pipe system, and thus ensure the continuity and stability of the entire heat generation and supply process.

[0043] In the above embodiment, a first detection hole 11 and a second detection hole 12 are provided on the side wall of the fermentation chamber 1. The first detection hole 11 is located at 1 / 2 of the height of the side wall of the fermentation chamber 1, and the second detection hole 12 is located at 1 / 4 of the height of the side wall of the fermentation chamber 1. The first detection hole 11 and the second detection hole 12 can be used to insert a temperature sensor or an oxygen sensor to detect the temperature or oxygen concentration inside the fermentation chamber. The monitoring points corresponding to the first detection hole 11 and the second detection hole 12 are the first detection point 111 and the second detection point 121, respectively. The first detection point 111 is located in the central area inside the fermentation chamber 1, and the second detection point 121 is located directly below the first detection point 111 and at 1 / 4 of the height of the fermentation chamber 1. The dual detection structure design of the present invention is beneficial for accurately judging the heat or oxygen concentration and the activity state of the material inside the fermentation pile; especially in low temperature environments, it helps to identify the deactivated area at the bottom of the pile in a timely manner, trigger the material renewal mechanism, and ensure the continuous and stable heat generation of the system.

[0044] In the above embodiment, a gas duct 6 is fixedly installed at the bottom of the fermentation chamber 1. The gas duct 6 is connected to a blower 7 to supply gas to the fermentation pile to maintain the oxygen concentration required for aerobic fermentation and promote microbial metabolic heat production. The bottom of the fermentation chamber 1 is designed as an open structure, and the fermentation pile inside is laid on the upper surface of the double-chain rack 9, which facilitates dynamic renewal of materials during fermentation. The double-chain rack 9 is located below the bottom of the fermentation chamber 1 and is fixedly installed on the support legs 8 at the four corners of the fermentation chamber 1 through its two sides, forming a stable load-bearing structure. A fixing frame is also provided at the center of the double-chain rack 9 to enhance its structural stability and load-bearing capacity during operation. Baffles 91 are provided on the upper sides of the double-chain rack 9 to effectively prevent the fermentation material from slipping during operation. Furthermore, the vertical distance between the upper surface of the double-chain rack 9 and the bottom of the fermentation chamber 1 is 10-15 cm to effectively discharge low-temperature materials.

[0045] The fixing frame at the center of the aforementioned support legs 8 and double chain rack 9 can preferably be made of high-strength steel (such as Q345 steel), which has good load-bearing capacity and seismic performance. The support legs 8 can be fixed to the bottom of the fermentation tank 1 with high-strength bolts and firmly connected to the ground foundation to ensure the stability and safety of the overall structure. To enhance the structural rigidity and vibration resistance of the support system, the support legs 8 can be interconnected by diagonally intersecting steel connecting rods to form a stable three-dimensional spatial frame structure, thereby effectively dispersing external forces and improving the overall stability of the system under dynamic loads. In addition, rubber pads or dampers can be added at the connection between the support legs 8 and the fermentation tank 1 to absorb the vibration energy generated during operation, reduce noise, and improve the smoothness of equipment operation.

[0046] In the above embodiment, the top of the fermentation chamber 1 is covered from bottom to top with a molecular membrane 13 and a plastic membrane 14, which together form a composite sealing structure to maintain a warm and humid environment for the fermentation pile while preventing the diffusion of odorous gases. An exhaust fan 10 is installed on the outer wall of the fermentation chamber 1 located between the molecular membrane 13 and the plastic membrane 14 to orderly discharge the waste gases (such as carbon dioxide) generated during the fermentation process, which can be recycled as gas fertilizer, realizing environmentally friendly emissions and resource utilization.

[0047] In the heat generation device system described in this embodiment, an intelligent controller (not shown in the figure) is also configured. This controller is electrically or through signal communication with key components such as the blower 7, the circulating pump 5, the temperature sensor (located in the first detection port 11 and the second detection port 12), the oxygen sensor (located in the first detection port 11), the on / off control valves on the pipeline, and the drive equipment of the double-chain busbar 9. The intelligent controller has data acquisition, status analysis, and feedback adjustment functions. It can automatically determine the status of the fermentation pile based on the real-time feedback data from the temperature sensor and the oxygen sensor, and dynamically adjust the relevant actuators. For example, when the temperature inside the fermentation pile exceeds the set threshold, the controller starts the circulation pump 5; when the temperature or oxygen concentration is lower than the set critical value, the controller will trigger the double-chain drain 9 to discharge low-temperature inactive materials and replenish new materials. At the same time, the blower 7 can be started to strengthen oxygen supply and restore the activity of the pile. After the system heating operation becomes stable, the controller will close the valve on the water outlet pipe 41 of the water replenishment funnel and switch to a closed hot water circulation mode to improve energy utilization efficiency and realize intelligent management of fermentation process, oxygen supply, heat recovery and material renewal.

[0048] Example 2

[0049] This embodiment describes a method for coupled autothermal fermentation of straw and manure using the heat-generating device from Embodiment 1. The specific steps are as follows:

[0050] S1. Crush crop straw with a moisture content of about 25% into straw fragments with a length of no more than 5cm, and mix them thoroughly with livestock and poultry manure (such as a mixture of chicken manure, pig manure, etc.) with a moisture content of about 60% at a mass ratio of 1:5. Add an appropriate amount of water during the mixing process to control the moisture content of the final mixture at 55% to 60% to obtain the fermentation base material.

[0051] S2. Combine the above-mentioned fermentation base material with self-made high-efficiency fermentation substrate (main component: viable bacteria content of 1.0 × 10⁻⁶). 8 Two samples of Bacillus polymyxa with a cfu / g concentration and a viable count of 1.0 × 10⁻⁶. 8 One part of *Penicillium glaucum* (cfu / g), three parts of highland barley flour, three parts of brown sugar, 15 parts of urea, and 60 parts of rice bran are mixed evenly at a mass ratio of 1:1000. The mixture is then piled into a fermentation pile with a height of 2.0–2.5 m. After covering it with plastic film, the pile is allowed to stand and heat up. When the accumulated daily temperature at the center of the pile reaches 30–40 °C (≥50 °C), the pretreatment of the fermentation base material is completed, and the fermented material is obtained.

[0052] S3. The above-mentioned fermentation materials are then loaded into the fermentation chamber 1 (the height of the fermentation chamber is 3m) and piled into a fermentation pile (the height of the fermentation pile is 2.5m). Then, the molecular membrane 13 and plastic film 14 are covered in sequence to seal the fermentation pile and prevent moisture loss and odor from escaping. At the same time, the blower 7 is started to supply air into the fermentation chamber 1 through the air pipe 6 to ensure that the oxygen concentration in the chamber is controlled within the range of 2% to 8%, so as to ensure that the fermentation process is under a suitable oxygen concentration for heat production, thereby entering the static fermentation heat production stage.

[0053] S4. Temperature sensors are inserted into the first detection hole 11 and the second detection hole 12 on the side wall of the fermentation chamber 1 to monitor the temperature changes of the areas of the first detection point 111 and the second detection point 121 in real time. When the temperature of the area of ​​the first detection point 111 reaches or exceeds 45°C, it indicates that the fermentation pile has entered the high-efficiency heat generation stage. The circulation pump 5 is started by the intelligent controller, and cold water is injected through the water replenishment funnel 4. The cold water flows through the water replenishment funnel outlet pipe 41 and the circulation pump 5 into the heat conduction pipe body inlet pipe 21. It enters the heat conduction pipe body device 2 to absorb the heat generated by the fermentation pile and is heated into hot water. Then it flows through the heat conduction pipe body outlet pipe 22 into the heat dissipation pipe body device 3, thereby realizing stable heating of the external target area.

[0054] When the temperature in the area of ​​the second detection point 121 is below 35℃, it indicates that the lower part of the pile has entered a low-temperature inactivation state. At this time, the operation of the double-chain drain 9 is triggered by the intelligent controller to transport the low-temperature material at the bottom of the fermentation tank 1 to the outside. At the same time, the material in the upper layer that is still in a high-temperature fermentation state naturally falls to fill the gap. Then, the molecular membrane 13 and plastic film 14 covering the top of the fermentation tank 1 are removed, and new fermentation material is added according to the above step S3. After resealing, the oxygen supply and heating process is restored to ensure the long-term stable operation of the system.

[0055] S5. After the system enters the stable operation stage, close the switch control valve on the water outlet pipe 41 of the water replenishment funnel. The high-temperature water in the heat dissipation pipe device 3 releases heat and forms low-temperature water. The low-temperature water after heat dissipation flows back to the circulation pump 5 through the heat dissipation pipe outlet pipe 31. Driven by the circulation pump 5, it re-enters the heat conduction pipe device 2 and is heated to form a closed water circulation system, thereby achieving a continuous and stable heating effect.

[0056] Comparative Example 1

[0057] This comparative example differs from Example 2 in that it does not contain barley flour in the fermentation substrate; all other steps are the same. The specific steps are as follows:

[0058] S1. Crush crop straw with a moisture content of about 25% into straw fragments with a length of no more than 5cm, and mix them thoroughly with livestock and poultry manure (such as a mixture of chicken manure, pig manure, etc.) with a moisture content of about 60% at a mass ratio of 1:5. Add an appropriate amount of water during the mixing process to control the moisture content of the final mixture at 55% to 60% to obtain the fermentation base material.

[0059] S2. Combine the above-mentioned fermentation base material with self-made high-efficiency fermentation substrate (main component: viable bacteria content of 1.0 × 10⁻⁶). 8 Two samples of Bacillus polymyxa with a cfu / g concentration and a viable count of 1.0 × 10⁻⁶. 8 One part of *Penicillium glaucus* (cfu / g), three parts of brown sugar, 15 parts of urea, and 60 parts of rice bran are mixed evenly at a mass ratio of 1:1000. The mixture is then piled into a fermentation pile with a height of 2.0–2.5 m. After covering it with plastic film, the pile is allowed to stand and heat up. When the accumulated daily temperature at the center of the pile reaches 30–40 °C (≥50 °C), the pretreatment of the fermentation base material is completed, and the fermented material is obtained.

[0060] S3. Then, the above-mentioned fermentation materials are loaded into the fermentation chamber 1 (the height of the fermentation chamber is 3m) and piled into a fermentation pile (the height of the fermentation pile is 2.5m). Then, the molecular membrane 13 and plastic film 14 are covered in sequence to seal the fermentation pile and prevent moisture loss and odor from escaping. At the same time, the blower 7 is started to supply air into the fermentation chamber 1 through the air pipe 6 to ensure that the oxygen concentration in the chamber is controlled within the range of 2% to 8% so as to ensure that the fermentation process is in a suitable aerobic environment for heat production.

[0061] S4. Temperature sensors are inserted into the first detection hole 11 and the second detection hole 12 on the side wall of the fermentation chamber 1 to monitor the temperature changes of the areas of the first detection point 111 and the second detection point 121 in real time. When the temperature of the area of ​​the first detection point 111 reaches or exceeds 45°C, it indicates that the fermentation pile has entered the high-efficiency heat generation stage. The circulation pump 5 is started by the intelligent controller, and cold water is injected through the water replenishment funnel 4. The cold water flows through the water replenishment funnel outlet pipe 41 and the circulation pump 5 into the heat conduction pipe body inlet pipe 21. It enters the heat conduction pipe body device 2 to absorb the heat generated by the fermentation pile and is heated into hot water. Then it flows through the heat conduction pipe body outlet pipe 22 into the heat dissipation pipe body device 3, thereby realizing stable heating of the external target area.

[0062] When the temperature in the area of ​​the second detection point 121 is below 35℃, it indicates that the lower part of the pile has entered a low-temperature inactivation state. At this time, the operation of the double-chain drain 9 is triggered by the intelligent controller to transport the low-temperature material at the bottom of the fermentation tank 1 to the outside. At the same time, the material in the upper layer that is still in a high-temperature fermentation state naturally falls to fill the gap. Then, the molecular membrane 13 and plastic film 14 covering the top of the fermentation tank 1 are removed, and new fermentation material is added according to the above step S3. After resealing, the oxygen supply and heating process is restored to ensure the long-term stable operation of the system.

[0063] S5. After the system enters the stable operation stage, close the switch control valve on the water outlet pipe 41 of the water replenishment funnel. The high-temperature water in the heat dissipation pipe device 3 releases heat and forms low-temperature water. The low-temperature water after heat dissipation flows back to the circulation pump 5 through the heat dissipation pipe outlet pipe 31. Driven by the circulation pump 5, it re-enters the heat conduction pipe device 2 and is heated to form a closed water circulation system, thereby achieving a continuous and stable heating effect.

[0064] Comparative Example 2

[0065] This comparative example differs from Example 2 in that the fermentation material contains only brown sugar, urea, and rice bran, and does not contain Bacillus polymyxa, Penicillium griseus, or highland barley flour. All other aspects are the same, and the specific steps are as follows:

[0066] S1. Crush crop straw with a moisture content of about 25% into straw fragments with a length of no more than 5cm, and mix them thoroughly with livestock and poultry manure (such as a mixture of chicken manure, pig manure, etc.) with a moisture content of about 60% at a mass ratio of 1:5. Add an appropriate amount of water during the mixing process to control the moisture content of the final mixture at 55% to 60% to obtain the fermentation base material.

[0067] S2. Mix the above-mentioned fermentation base material with the self-made high-efficiency fermentation material (composed of 3 parts brown sugar, 15 parts urea, and 60 parts rice bran) at a mass ratio of 1:1000. Then, pile the mixture into a fermentation pile with a height of 2.0 to 2.5 m. Cover it with plastic film and let it stand to heat up. When the accumulated daily temperature at the center of the pile reaches 30 to 40°C (≥50°C), the pretreatment of the fermentation base material is completed, and the fermented material is obtained.

[0068] S3. Then, the above-mentioned fermentation materials are loaded into the fermentation chamber 1 (the height of the fermentation chamber is 3m) and piled into a fermentation pile (the height of the fermentation pile is 2.5m). Then, the molecular membrane 13 and plastic film 14 are covered in sequence to seal the fermentation pile and prevent moisture loss and odor from escaping. At the same time, the blower 7 is started to supply air into the fermentation chamber 1 through the air pipe 6 to ensure that the oxygen concentration in the chamber is controlled within the range of 2% to 8% so as to ensure that the fermentation process is in a suitable aerobic environment for heat production.

[0069] S4. Temperature sensors are inserted into the first detection hole 11 and the second detection hole 12 on the side wall of the fermentation chamber 1 to monitor the temperature changes of the areas of the first detection point 111 and the second detection point 121 in real time. When the temperature of the area of ​​the first detection point 111 reaches or exceeds 45°C, it indicates that the fermentation pile has entered the high-efficiency heat generation stage. The circulation pump 5 is started by the intelligent controller, and cold water is injected through the water replenishment funnel 4. The cold water flows through the water replenishment funnel outlet pipe 41 and the circulation pump 5 into the heat conduction pipe body inlet pipe 21. It enters the heat conduction pipe body device 2 to absorb the heat generated by the fermentation pile and is heated into hot water. Then it flows through the heat conduction pipe body outlet pipe 22 into the heat dissipation pipe body device 3, thereby realizing stable heating of the external target area.

[0070] When the temperature in the area of ​​the second detection point 121 is below 35℃, it indicates that the lower part of the pile has entered a low-temperature inactivation state. At this time, the operation of the double-chain drain 9 is triggered by the intelligent controller to transport the low-temperature material at the bottom of the fermentation tank 1 to the outside. At the same time, the material in the upper layer that is still in a high-temperature fermentation state naturally falls to fill the gap. Then, the molecular membrane 13 and plastic film 14 covering the top of the fermentation tank 1 are removed, and new fermentation material is added according to the above step S3. After resealing, the oxygen supply and heating process is restored to ensure the long-term stable operation of the system.

[0071] S5. After the system enters the stable operation stage, close the switch control valve on the water outlet pipe 41 of the water replenishment funnel. The high-temperature water in the heat dissipation pipe device 3 releases heat and forms low-temperature water. The low-temperature water after heat dissipation flows back to the circulation pump 5 through the heat dissipation pipe outlet pipe 31. Driven by the circulation pump 5, it re-enters the heat conduction pipe device 2 and is heated to form a closed water circulation system, thereby achieving a continuous and stable heating effect.

[0072] The temperature of the fermentation pile in the first detection point area of ​​the fermentation chamber in Example 2 (RAb), Comparative Example 1 (RA), and Comparative Example 2 (CK1) was monitored for 88 days, and the heat production trend is as follows. Figure 3 As shown.

[0073] from Figure 3As can be seen, both Example 2 (RAb) and Comparative Example 1 (RA) exhibited a temperature change trend of first rising and then falling during fermentation, while the temperature curve of Comparative Example 2 (CK1) was relatively flat with almost no obvious temperature rise, indicating that the addition of barley flour and inoculant had a significant impact on the fermentation process. In the first 22 days of the experiment, the fermentation pile temperature of Example 2 (RAb) continued to rise, reaching a peak of 69.95℃ on day 22; subsequently, it entered a slow cooling phase, but the pile temperature remained above 45℃ until day 88, demonstrating a strong and sustained heat production capacity. In contrast, Comparative Example 1 (RA) also showed a temperature rise trend in the first 22 days of the experiment, reaching a peak temperature of 64.8℃ on day 22; however, it then rapidly cooled, dropping to approximately 35℃ by day 44, at which point the pile essentially stopped producing heat, and the temperature further decreased to around 5℃ by day 88. Therefore, Example 2 (RAb) is significantly superior to Comparative Example 1 (RA) in terms of heat production performance, indicating that the barley β-glucan contained in the barley flour not only helps to enhance the initial fermentation activity but also promotes energy release during microbial metabolism, thereby effectively prolonging the duration of the high-temperature stage. Compared with Comparative Example 1 (RA), the heat production maintenance time of Example 2 (RAb) is extended by more than 44 days, further demonstrating that barley β-glucan has a good "slow-release effect," which can provide a continuous carbon source for microorganisms or improve the microenvironment of the pile, thereby enhancing their metabolic stability and environmental adaptability.

[0074] Comparative Example 3

[0075] This comparative example differs from Example 2 in that the fermentation material formed by mixing the fermentation substrate and the fermentation inoculum was not pretreated. All other steps are the same, and the specific steps are as follows:

[0076] S1. Crush crop straw with a moisture content of about 25% into straw fragments with a length of no more than 5cm, and mix them thoroughly with livestock and poultry manure (such as a mixture of chicken manure, pig manure, etc.) with a moisture content of about 60% at a mass ratio of 1:5. Add an appropriate amount of water during the mixing process to control the moisture content of the final mixture at 55% to 60% to obtain the fermentation base material.

[0077] S2. Combine the above-mentioned fermentation base material with self-made high-efficiency fermentation substrate (main component: viable bacteria content of 1.0 × 10⁻⁶). 8 Two samples of Bacillus polymyxa with a cfu / g concentration and a viable count of 1.0 × 10⁻⁶. 8 The fermented material is obtained by uniformly mixing 1 part of Penicillium griseus (cfu / g), 3 parts of highland barley flour, 3 parts of brown sugar, 15 parts of urea, and 60 parts of rice bran at a mass ratio of 1:1000.

[0078] S3. Then, the above-mentioned fermentation materials are loaded into the fermentation chamber 1 (the height of the fermentation chamber is 3m) and piled into a fermentation pile (the height of the fermentation pile is 2.5m). Then, the molecular membrane 13 and plastic film 14 are covered in sequence to seal the fermentation pile and prevent moisture loss and odor from escaping. At the same time, the blower 7 is started to supply air into the fermentation chamber 1 through the air pipe 6 to ensure that the oxygen concentration in the chamber is controlled within the range of 2% to 8% so as to ensure that the fermentation process is in a suitable aerobic environment for heat production.

[0079] S4. Temperature sensors are inserted into the first detection hole 11 and the second detection hole 12 on the side wall of the fermentation chamber 1 to monitor the temperature changes of the areas of the first detection point 111 and the second detection point 121 in real time. When the temperature of the area of ​​the first detection point 111 reaches or exceeds 50°C, it indicates that the fermentation pile has entered the high-efficiency heat generation stage. The circulation pump 5 is started by the intelligent controller, and cold water is injected through the water replenishment funnel 4. The cold water flows through the water replenishment funnel outlet pipe 41 and the circulation pump 5 into the heat conduction pipe body inlet pipe 21. It enters the heat conduction pipe body device 2 to absorb the heat generated by the fermentation pile and is heated into hot water. Then it flows through the heat conduction pipe body outlet pipe 22 into the heat dissipation pipe body device 3, thereby realizing stable heating of the external target area.

[0080] When the temperature in the area of ​​the second detection point 121 is below 35℃, it indicates that the lower part of the pile has entered a low-temperature inactivation state. At this time, the operation of the double-chain drain 9 is triggered by the intelligent controller to transport the low-temperature material at the bottom of the fermentation tank 1 to the outside. At the same time, the material in the upper layer that is still in a high-temperature fermentation state naturally falls to fill the gap. Then, the molecular membrane 13 and plastic film 14 covering the top of the fermentation tank 1 are removed, and new fermentation material is added according to the above step S3. After resealing, the oxygen supply and heating process is restored to ensure the long-term stable operation of the system.

[0081] S5. After the system enters the stable operation stage, close the switch control valve on the water outlet pipe 41 of the water replenishment funnel. The high-temperature water in the heat dissipation pipe device 3 releases heat and forms low-temperature water. The low-temperature water after heat dissipation flows back to the circulation pump 5 through the heat dissipation pipe outlet pipe 31. Driven by the circulation pump 5, it re-enters the heat conduction pipe device 2 and is heated to form a closed water circulation system, thereby achieving a continuous and stable heating effect.

[0082] The settling of fermentation materials in the fermentation tanks of Examples 2 (RAb) and Comparative Example 3 (CK2) was observed and the settling ratio was calculated. The settling ratio is the ratio of the remaining height of the pile after a certain period of time to the original pile height. Its value directly affects the pile height, thereby directly affecting the heat loss of the pile and the heat conduction of the heat-conducting parts. The settling ratio data are shown in Table 1, and the settling trend is as follows. Figure 4 As shown.

[0083] Table 1

[0084] Day 1 Day 22 Day 44 Day 66 Example 2 0 5.5±0.28％ 9.0±0.57％ 12.95±0.78％ Comparative Example 3 0 12.1±0.85％ 19.25±0.78％ 25.05±1.21％

[0085] from Figure 4 As shown in Table 1, the settling ratio of the material piles in Example 2 (RAb) and Comparative Example 3 (CK2) gradually increased over time. However, the settling ratio of the material piles in Example 2 (RAb) increased slowly, reaching only 12.95±0.78% by the end of the test, requiring no further addition of material. In contrast, the settling ratio of Comparative Example 3 (CK2) was 25.05±1.21%, exceeding the control target for settling ratio (generally within 15%) by day 44 of the test, necessitating the addition of fermentation material to maintain heat production. This indicates that pre-treatment of the mixture of fermentation substrate and fermentation inoculum resulted in fermentation material with fine particles, suitable moisture content, and a compact structure. This not only prevented uneven settling of the fermentation material within the fermentation chamber, reducing the risk of compression or damage to the heat transfer pipes, but also improved the system's operational stability and heat production efficiency.

[0086] The foregoing has provided a detailed description of a bio-new energy heat generation device and method based on the coupled autothermal fermentation of straw and manure, as disclosed in this invention. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are merely for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make various improvements and modifications to this invention without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A bio-new energy heat generation device based on the coupled self-heating fermentation of straw and manure, characterized in that, The system includes a fermentation chamber (1) for holding a straw and manure coupled fermentation pile, a heat-conducting pipe device (2), a heat dissipation pipe device (3), a water replenishment funnel (4), and a circulation pump (5). The heat-conducting pipe device (2) is located in the center of the fermentation chamber (1) and is enclosed within the straw and manure coupled fermentation pile. The heat dissipation pipe device (3) is located in the area outside the fermentation chamber (1) where heating is required. The upper end of the heat-conducting pipe device (2) is connected to the outlet of the circulation pump (5) through a heat-conducting pipe inlet pipe (21), and the lower end of the heat-conducting pipe device (2) is connected to the inlet of the heat dissipation pipe device (3) through a heat-conducting pipe outlet pipe (22). The inlet of the circulation pump (5) is connected to the outlet pipe (31) of the heat dissipation pipe and the outlet pipe (41) of the water replenishment funnel through a three-way pipe.

2. The bio-new energy heat generation device based on the coupled autothermal fermentation of straw and manure as described in claim 1, characterized in that, The fermentation chamber (1) has a first detection hole (11) and a second detection hole (12) on its side wall. The first detection hole (11) is located at 1 / 2 of the height of the side wall of the fermentation chamber (1), and the second detection hole (12) is located at 1 / 4 of the height of the side wall of the fermentation chamber (1). The first detection hole (11) and the second detection hole (12) can be used to insert a temperature sensor or an oxygen sensor to detect the temperature or oxygen concentration inside the fermentation chamber. The monitoring points corresponding to the first detection hole (11) and the second detection hole (12) are the first detection point (111) and the second detection point (121), respectively. The first detection point (111) is located in the center area inside the fermentation chamber (1), and the second detection point (121) is located directly below the first detection point (111) and in the area at 1 / 4 of the height of the fermentation chamber (1).

3. The bio-new energy heat generation device based on the coupled autothermal fermentation of straw and manure according to claim 2, characterized in that, The bottom of the fermentation chamber (1) is fixedly equipped with an air guide pipe (6), which is connected to a blower (7) to provide air circulation for the fermentation process. The bottom of the fermentation chamber (1) is designed as an open structure, and the fermentation pile inside is laid on the upper surface of the double chain rack (9). The double chain rack (9) is located below the bottom of the fermentation chamber (1) and is fixedly installed on the support legs (8) at the four corners of the fermentation chamber (1) through its two sides. A fixing frame is also provided in the center of the double chain rack (9) to enhance its operational stability. Baffles (91) are provided on the upper sides of the double chain rack (9) to effectively prevent the fermentation material from slipping during operation.

4. The bio-new energy heat generation device based on the coupled autothermal fermentation of straw and manure as described in claim 1, characterized in that, The top of the fermentation chamber (1) is covered with a molecular membrane (13) and a plastic film (14) from bottom to top, and an exhaust fan (10) is installed on the outer wall of the fermentation chamber (1) between the molecular membrane (13) and the plastic film (14).

5. A bio-new energy heat generation device based on the coupled self-heating fermentation of straw and manure as described in claim 1, characterized in that, The inlet pipe (21), outlet pipe (22), outlet pipe (31), and outlet pipe (41) of the water supply funnel are all equipped with switch control valves; the heat dissipation pipe device (3) is equipped with an exhaust valve (32).

6. A method for generating heat from a coupled fermentation pile of straw and manure using the apparatus as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Feed the crop straw into a crusher and crush it into straw fragments with a length not exceeding 5cm. Then, mix the straw fragments with livestock and poultry manure at a mass ratio of 1:(4-6). Add water appropriately during the mixing process to control the moisture content of the final mixture within the range of 55%-60% to obtain the fermentation base material. S2. Mix the fermentation substrate obtained in step S1 with the fermentation inoculum at a mass ratio of 1:1000, and pile them into a fermentation pile with a height of 2.0 to 2.5 m. Cover with plastic film and let it stand to heat up. When the accumulated daily temperature at the center of the pile reaches 30 to 40°C (≥50°C), the pretreatment of the fermentation substrate is completed and the fermentation material is obtained. S3. Load the fermentation material from step S2 into the fermentation chamber and pile it into a fermentation pile inside the chamber; then cover it with a molecular membrane and a plastic film in sequence to seal the fermentation pile; at the same time, start the blower and supply air into the fermentation chamber through the air pipe to ensure that the oxygen concentration inside the chamber is controlled within the range of 2% to 8% so as to ensure that the fermentation process is under a suitable oxygen concentration for heat production, thus entering the static fermentation heat production stage. S4. Temperature sensors are inserted into the first and second detection holes on the side wall of the fermentation chamber to monitor temperature changes near the first and second detection points in real time. When the temperature near the first detection point is ≥45℃, the circulation pump is started and cold water is injected through the water replenishment funnel. The cold water flows through the outlet pipe of the water replenishment funnel and into the inlet pipe of the heat-conducting pipe under the drive of the circulation pump. It enters the heat-conducting pipe device to absorb the heat generated by the fermentation pile. After being heated into hot water, it enters the heat dissipation pipe device through the outlet pipe of the heat-conducting pipe to achieve heat supply and energy release to the external target area. When the temperature near the second detection point is lower than 35℃, the low-temperature material at the bottom of the fermentation chamber can be transported to the outside of the chamber through the double chain conveyor. At the same time, the high-temperature fermentation material at the top of the fermentation chamber falls naturally to the bottom. The molecular membrane and plastic film on the top of the fermentation chamber are removed, and new fermentation material is added according to step S3 to maintain stable operation. S5. Once the system enters a stable operating phase, close the switch control valve on the water outlet pipe of the water replenishment funnel. The high-temperature water releases heat in the heat dissipation tube device and is discharged as low-temperature water through the heat dissipation tube outlet pipe. It then re-enters the heat conduction tube device via the circulation pump, forming a closed-loop circulation system, thereby achieving a continuous and stable heating effect.

7. The method for generating heat using a coupled fermentation pile of straw and manure according to claim 6, characterized in that, In step S2, the fermentation substrate is prepared from the following raw materials in parts by weight: the effective viable count is 1.0 × 10⁻⁶. 8 Two samples of Bacillus polymyxa with a cfu / g concentration, each containing 1.0 × 10⁻⁶ effective viable cells. 8 The mixture consists of 1 part of *Penicillium griseus* (cfu / g), 3 parts of highland barley flour, 3 parts of brown sugar, 15 parts of urea, and 60 parts of rice bran; the *Bacillus polymyxa* species is registered with the China General Microbiological Culture Collection Center (CGMCC NO:20494), and the *Penicillium griseus* species is registered with the China General Microbiological Culture Collection Center (CGMCC NO:19940).

8. The method for generating heat using a coupled fermentation pile of straw and manure according to claim 6, characterized in that, In step S3, the oxygen concentration inside the fermentation chamber can be detected by inserting an oxygen sensor into the first detection hole to ensure that the fermentation process is in a suitable aerobic environment for heat production.

9. The method for generating heat using a coupled fermentation pile of straw and manure according to claim 6, characterized in that, In step S3, the height of the fermentation box is 2.5 to 3.0 m; the height of the fermentation pile inside the fermentation box is required to be greater than 2 m, so that the fermentation material can form a thick heat storage layer, which can effectively avoid heat loss in the fermentation pile.

10. The method for generating heat using a coupled fermentation pile of straw and manure according to claim 9, characterized in that, In step S4, when the height of the fermentation material above the top of the heat-conducting pipe device is less than 0.5m, new fermentation material can be added according to step S3 to ensure heat generation efficiency and heat extraction uniformity; the vertical distance between the upper surface of the double chain and the bottom of the fermentation box is 10-15cm to effectively discharge low-temperature material.

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