CN102994374B - Biogas warming system compounding solar energy with waste heat of generator set - Google Patents

Biogas warming system compounding solar energy with waste heat of generator set Download PDF

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CN102994374B
CN102994374B CN201210469436.6A CN201210469436A CN102994374B CN 102994374 B CN102994374 B CN 102994374B CN 201210469436 A CN201210469436 A CN 201210469436A CN 102994374 B CN102994374 B CN 102994374B
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寇巍
郑磊
林国庆
曲静霞
孙玉辉
刘齐
曹焱鑫
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Liaoning Institute Of Energy Research Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
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    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
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    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/22—Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
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    • C12M43/00—Combinations of bioreactors or fermenters with other apparatus
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    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/59—Biological synthesis; Biological purification

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Abstract

The invention belongs to the field of biogas engineering application, and more particularly relates to a biogas warming system compounding solar energy with the waste heat of a generator set, which is used for absorbing the heat energy of solar energy and the heat energy released by the biogas generator set, and applying the absorbed solar energies to warming for a biogas tank body. The biogas warming system comprises an electric water pump, a cylinder jacket water heat exchanger, a gas engine, generators, a waste gas heat exchanger, a solar heat collector, a solar heat-accumulating water tank, a biogas warming and insulating system and a self-operated electronically-controlled temperature control valve. The biogas warming system disclosed by the invention combines the biogas generator with a solar water heating system, thus being capable of reducing investment and performing appropriate regulation and control according to the needed warming energy, has operability and application feasibility during actual application, and has the double benefits of economical efficiency and practicability. The biogas warming system provides a guarantee on the all-year-round stable running of biogas engineering in cold climate conditions.

Description

一种太阳能与发电机组余热复合的沼气增温系统A Biogas Warming System Combining Solar Energy and Generating Unit Waste Heat

技术领域： Technical field:

本发明属于沼气工程应用领域，更具体地说，是涉及一种将太阳能热能与沼气发电机组释放的热能相吸收，将吸收后的热能并应用于沼气罐体增温的一种太阳能与发电机组余热复合的沼气增温系统。The invention belongs to the field of biogas engineering applications, and more specifically relates to a solar energy and generator set that absorbs solar heat energy and heat energy released by a biogas generator set, and applies the absorbed heat energy to increase the temperature of a biogas tank Waste heat compound biogas heating system.

背景技术： Background technique:

沼气工艺利用粪便、污泥和生活垃圾等废弃物进行发酵，实现废弃物降解后的再利用，其产生高热值沼气也是一种高效、清洁的可再生新能源。因此，沼气在应对能源危机和解决环境问题上面具有多重效益。但当厌氧反应器在较高负荷下运行时，沼气的温度波动范围要保持在+2℃/d之内，否则将影响厌氧产气过程，使产气效率明显降低。因此，沼气在寒冷地区的应用要考虑其发酵温度的稳定性。在寒冷气候条件下的，研究沼气工程的增温技术以维持发酵过程的稳定具有一定的实际意义。The biogas process uses waste such as feces, sludge, and domestic garbage to ferment to realize the reuse of waste after degradation. The high calorific value biogas produced by it is also an efficient, clean and renewable new energy. Therefore, biogas has multiple benefits in coping with energy crisis and solving environmental problems. However, when the anaerobic reactor operates under a higher load, the temperature fluctuation range of the biogas should be kept within + 2°C/d, otherwise it will affect the anaerobic gas production process and significantly reduce the gas production efficiency. Therefore, the application of biogas in cold regions should consider the stability of its fermentation temperature. Under cold climate conditions, it is of practical significance to study the temperature increasing technology of biogas engineering to maintain the stability of the fermentation process.

发明内容： Invention content:

本发明就是针对上述问题，基于北方地区沼气工程中发酵罐体受寒冷气候条件的影响而影响发酵，且单一的增温方式热利用效率低和运行成本高等缺点，提供了一种太阳能与发电机组余热复合的沼气增温系统。The present invention is aimed at the above problems, and based on the disadvantages of low heat utilization efficiency and high operating cost of the single warming method, based on the fact that the fermentation tank body in the biogas project in the northern region is affected by cold weather conditions and fermentation is affected, it provides a solar energy and generator set Waste heat compound biogas heating system.

为了实现本发明的上述目的，本发明采用如下技术方案，本发明将太阳能集热设备与沼气发电机组的尾气热吸收装置相结合，形成一种高效率的热水循环加热系统，进而达到沼气发酵罐体增温的目的。In order to achieve the above object of the present invention, the present invention adopts the following technical scheme. The present invention combines the solar heat collection equipment with the tail gas heat absorbing device of the biogas generator set to form a high-efficiency hot water circulation heating system, and then achieve biogas fermentation The purpose of tank heating.

包括电动水泵、缸套水热交换器、气体发动机、发电机、废气热交换器、太阳能集热器、太阳能蓄热水箱、沼气增温保温系统、自力式电控温度控制阀；Including electric water pumps, jacket water heat exchangers, gas engines, generators, exhaust gas heat exchangers, solar heat collectors, solar heat storage tanks, biogas heating and heat preservation systems, and self-operated electronically controlled temperature control valves;

电动水泵依次与缸套水热交换器、气体发动机、发电机相连，电动水泵和缸套水热交换器通过冷水管相连，缸套水热交换器和气体发动机之间、气体发动机与发电机之间均设置了冷水管和热水管；外循环冷水经由电动水泵进入缸套水热交换器加热，提升冷水温度以防止冷水温度过低导致气体发动机内温差过大产生热应力损坏气体发动机；The electric water pump is connected with the jacket water heat exchanger, the gas engine and the generator in turn, and the electric water pump and the jacket water heat exchanger are connected through the cold water pipe. Cold water pipes and hot water pipes are installed in each room; the cold water of the outer circulation enters the jacket water heat exchanger through the electric water pump to be heated, and the temperature of the cold water is raised to prevent the temperature difference of the cold water from being too low to cause thermal stress to damage the gas engine;

电动水泵的一端通过三通Ⅰ与外循环冷水相通，三通Ⅰ的另一端经由热水管依次与阀门Ⅰ、三通Ⅱ、缸套水热交换器相连；三通Ⅱ的另一端通过阀门Ⅱ与废气热交换器相连；缸套水热交换器流出的热水经由阀门Ⅱ分为两部分，一部分对外循环冷水进行初步混合预热，另一部分进入废热交换器中与气体发动机尾气进行气-水热交换，进入太阳能集热器中；One end of the electric water pump communicates with the cold water of the external circulation through the tee Ⅰ, and the other end of the tee Ⅰ is connected with the valve Ⅰ, the tee Ⅱ, and the jacket water heat exchanger in turn through the hot water pipe; the other end of the tee Ⅱ passes through the valve Ⅱ It is connected with the exhaust gas heat exchanger; the hot water flowing out of the jacket water heat exchanger is divided into two parts through the valve II, one part is preliminarily mixed and preheated with external circulating cold water, and the other part enters the waste heat exchanger for gas-water exchange with the exhaust gas of the gas engine. Heat exchange, into solar collectors;

气体发动机的另一端依次与废气热交换器、太阳能集热器、太阳能蓄热水箱、沼气增温保温系统、自力式电控温度控制阀、发电机相连。The other end of the gas engine is sequentially connected with the exhaust gas heat exchanger, solar heat collector, solar water storage tank, methane heating and heat preservation system, self-operated electronically controlled temperature control valve, and generator.

所述的太阳能集热器上设置了温度传感器Ⅰ，所述的太阳能蓄热水箱上设置了温度传感器Ⅱ和电加热，所述的自力式电控温度控制阀上设置了温度传感器Ⅲ。The solar heat collector is provided with a temperature sensor I, the solar water storage tank is provided with a temperature sensor II and an electric heater, and the self-operated electric temperature control valve is provided with a temperature sensor III.

所述的太阳能集热器和太阳能蓄热水箱间的一根管道上设置了阀门Ⅳ，另一根管上设置了阀门Ⅴ和温差循环泵；当温度传感器Ⅰ与温度传感器Ⅱ温度差超过5℃时阀门Ⅴ开启，温差循环泵启动对太阳能集热器与太阳能蓄热水箱进行强制水循环；A valve IV is set on one pipe between the solar heat collector and the solar heat storage tank, and a valve V and a temperature difference circulating pump are set on the other pipe; when the temperature difference between the temperature sensor I and the temperature sensor II exceeds 5 When the temperature is ℃, the valve Ⅴ is opened, and the temperature difference circulation pump starts to perform forced water circulation on the solar heat collector and the solar heat storage tank;

所述的废气热交换器和太阳能集热器间设置了阀门Ⅲ。A valve III is set between the waste gas heat exchanger and the solar heat collector.

所述的沼气增温保温系统和自力式电控温度控制阀通过三通Ⅲ相连，三通Ⅲ的另一端与阀门Ⅵ相连。The biogas heating and heat preservation system is connected with the self-operated electric temperature control valve through a tee III, and the other end of the tee III is connected with the valve VI.

所述的温度传感器Ⅰ和温度传感器Ⅱ的控温范围为5℃，所述的温度传感器Ⅲ的控温范围为-20℃～120℃。The temperature control range of the temperature sensor I and the temperature sensor II is 5°C, and the temperature control range of the temperature sensor III is -20°C to 120°C.

附图说明： Description of drawings:

图1为本发明的结构框图。Fig. 1 is a structural block diagram of the present invention.

本发明的有益效果：Beneficial effects of the present invention:

本发明将沼气发电机组和太阳能热水系统相结合，既可减小投入，又可根据所需要的增温能量进行适当的调控，在实际应用中具有可操作性和应用的可行性，具有经济性和实用性双重效益。为寒冷气候条件下沼气工程的常年稳定运行提供保障。The invention combines the biogas generating set and the solar water heating system, which can not only reduce the investment, but also carry out proper regulation and control according to the required heating energy, and has operability and application feasibility in practical application, and has economic Double benefits of sex and practicality. It provides guarantee for the stable operation of biogas projects all year round under cold climate conditions.

具体实施方式： Detailed ways:

包括电动水泵、缸套水热交换器、气体发动机、发电机、废气热交换器、太阳能集热器、太阳能蓄热水箱、沼气增温保温系统、自力式电控温度控制阀；Including electric water pumps, jacket water heat exchangers, gas engines, generators, exhaust gas heat exchangers, solar heat collectors, solar heat storage tanks, biogas heating and heat preservation systems, and self-operated electronically controlled temperature control valves;

电动水泵依次与缸套水热交换器、气体发动机、发电机相连，电动水泵和缸套水热交换器通过冷水管相连，缸套水热交换器和气体发动机之间、气体发动机与发电机之间均设置了冷水管和热水管；外循环冷水经由电动水泵进入缸套水热交换器加热，提升冷水温度以防止冷水温度过低导致气体发动机内温差过大产生热应力损坏气体发动机；The electric water pump is connected with the jacket water heat exchanger, the gas engine and the generator in sequence, and the electric water pump and the jacket water heat exchanger are connected through the cold water pipe. Cold water pipes and hot water pipes are installed in each room; the cold water of the outer circulation enters the jacket water heat exchanger through the electric water pump to be heated, and the temperature of the cold water is increased to prevent the temperature difference of the cold water from being too low and causing the gas engine to be damaged by thermal stress caused by excessive temperature difference;

电动水泵的一端通过三通Ⅰ与外循环冷水相通，三通Ⅰ的另一端经由热水管依次与阀门Ⅰ、三通Ⅱ、缸套水热交换器相连；三通Ⅱ的另一端通过阀门Ⅱ与废气热交换器相连；缸套水热交换器流出的热水经由三通阀分为两部分，一部分对外循环冷水进行初步混合预热，另一部分进入废热交换器中与气体发动机尾气进行气-水热交换，进入太阳能集热器中；One end of the electric water pump communicates with the cold water of the external circulation through the tee Ⅰ, and the other end of the tee Ⅰ is connected with the valve Ⅰ, the tee Ⅱ, and the jacket water heat exchanger in turn through the hot water pipe; the other end of the tee Ⅱ passes through the valve Ⅱ It is connected with the exhaust gas heat exchanger; the hot water flowing out of the jacket water heat exchanger is divided into two parts through the three-way valve, one part is preliminarily mixed and preheated with external circulating cold water, and the other part enters the waste heat exchanger for gas- Water heat exchange, into the solar collector;

气体发动机的另一端依次与废气热交换器、太阳能集热器、太阳能蓄热水箱、沼气增温保温系统、自力式电控温度控制阀、发电机相连。The other end of the gas engine is sequentially connected with the exhaust gas heat exchanger, solar heat collector, solar water storage tank, methane heating and heat preservation system, self-operated electronically controlled temperature control valve, and generator.

所述的太阳能集热器上设置了温度传感器Ⅰ，所述的太阳能蓄热水箱上设置了温度传感器Ⅱ和电加热，所述的自力式电控温度控制阀上设置了温度传感器Ⅲ。The solar heat collector is provided with a temperature sensor I, the solar water storage tank is provided with a temperature sensor II and an electric heater, and the self-operated electric temperature control valve is provided with a temperature sensor III.

所述的太阳能集热器和太阳能蓄热水箱间的一根管道上设置了阀门Ⅳ，另一根管上设置了阀门Ⅴ和温差循环泵；A valve IV is set on one pipe between the solar heat collector and the solar heat storage tank, and a valve V and a temperature difference circulating pump are set on the other pipe;

所述的废气热交换器和太阳能集热器间设置了阀门Ⅲ。A valve III is set between the waste gas heat exchanger and the solar heat collector.

所述的沼气增温保温系统和自力式电控温度控制阀通过三通Ⅲ相连，三通Ⅲ的另一端与阀门Ⅵ相连。The biogas heating and heat preservation system is connected with the self-operated electric temperature control valve through a tee III, and the other end of the tee III is connected with the valve VI.

所述的温度传感器Ⅰ和温度传感器Ⅱ的控温范围为5℃，所述的温度传感器Ⅲ的控温范围为-20℃～120℃。The temperature control range of the temperature sensor I and the temperature sensor II is 5°C, and the temperature control range of the temperature sensor III is -20°C to 120°C.

结合图1说明本发明的工作原理，Illustrate the working principle of the present invention in conjunction with Fig. 1,

沼气增温系统启动时，电动水泵启动，外循环冷水通过三通Ⅰ、电动水泵进入缸套水热交换器3中进行预热，外循环冷水预热后进入气体发动机、发电机5进行冷热水交换，外循环冷水加热后进入缸套水热交换器3中再次进行冷热水交换，换热后的热水通过三通Ⅱ分为两部分，一部分经由阀门Ⅰ进行热水回流对外循环冷水进行初步预热，另一部分经由阀门Ⅱ进入废气热交换器中与气体发动机尾气进行“气——水热交换”，换热后热水经由阀门Ⅲ流入太阳能集热器中增温，增温后热水经由阀门Ⅳ进入太阳能蓄热器中，随后加温后的热水进入沼气增温系统内的换热器，热水在换热器中以辐射和对流的方式与发酵原料进行热交换，达到沼液增温保温的目的，然后热水经由三通Ⅲ、自力式电控温度控制阀作为循环冷却水进入发电机用于冷却。When the biogas warming system is started, the electric water pump is started, and the cold water in the external circulation passes through the tee Ⅰ and the electric water pump enters the jacket water heat exchanger 3 for preheating. After preheating, the cold water in the external circulation enters the gas engine and generator 5 for cooling and heating Water exchange, the cold water in the external circulation is heated and enters the jacket water heat exchanger 3 for another exchange of cold and hot water. The hot water after heat exchange is divided into two parts through the tee II, and one part is returned to the external circulation of cold water through the valve I. Preliminary preheating is carried out, and the other part enters the exhaust gas heat exchanger through valve II to perform "gas-water heat exchange" with the exhaust gas of the gas engine. After heat exchange, the hot water flows into the solar collector through valve III to increase the temperature. The hot water enters the solar heat accumulator through the valve IV, and then the heated hot water enters the heat exchanger in the biogas heating system, where the hot water exchanges heat with the fermentation raw materials in the way of radiation and convection. To achieve the purpose of increasing the temperature and heat preservation of the biogas slurry, and then the hot water enters the generator as circulating cooling water through the three-way III and the self-operated electronically controlled temperature control valve for cooling.

温度传感器Ⅰ、第二温度传感器Ⅱ和第三温度传感器Ⅲ分别检测太阳能集热器、太阳能蓄热水箱、自力式电控温度控制阀的温度。当温度传感器Ⅰ与温度传感器Ⅱ温度差超过5℃时阀门Ⅴ开启，温差循环泵启动对太阳能集热器与太阳能蓄热水箱进行强制水循环。The temperature sensor Ⅰ, the second temperature sensor Ⅱ and the third temperature sensor Ⅲ respectively detect the temperature of the solar heat collector, the solar hot water storage tank and the self-operated electronically controlled temperature control valve. When the temperature difference between the temperature sensor Ⅰ and the temperature sensor Ⅱ exceeds 5°C, the valve Ⅴ is opened, and the temperature difference circulation pump is started to perform forced water circulation on the solar heat collector and the solar heat storage tank.

当温度传感器Ⅲ检测沼气增温保温系统流出水的温度低于40℃时，自力式电控温度控制阀关闭，阀门Ⅵ打开进行排空，太阳能蓄热水箱上的电加热开启，加热至温度传感器Ⅲ的设定温度。When the temperature sensor Ⅲ detects that the temperature of the water flowing out of the biogas heating and heat preservation system is lower than 40°C, the self-operated electric temperature control valve is closed, the valve Ⅵ is opened for emptying, and the electric heating on the solar water storage tank is turned on to heat up to the temperature Set temperature of sensor III.

当沼气增温保温系统的流出水温度达到设定温度后，进入发电机作为循环冷却水用于冷却。When the temperature of the outflow water from the biogas heating and heat preservation system reaches the set temperature, it enters the generator as circulating cooling water for cooling.

Claims (1)

1.一种太阳能与发电机组余热复合的沼气增温系统，其特征在于，包括电动水泵、缸套水热交换器、气体发动机、发电机、废气热交换器、太阳能集热器、太阳能蓄热水箱、沼气增温保温系统、自力式电控温度控制阀； 1. A biogas warming system combined with solar energy and generating set waste heat, characterized in that it includes an electric water pump, a jacket water heat exchanger, a gas engine, a generator, an exhaust gas heat exchanger, a solar heat collector, and a solar heat storage Water tank, biogas heating and heat preservation system, self-operated electronically controlled temperature control valve; 电动水泵依次与缸套水热交换器、气体发动机、发电机相连，电动水泵和缸套水热交换器通过冷水管相连，缸套水热交换器和气体发动机之间、气体发动机与发电机之间均设置了冷水管和热水管； The electric water pump is connected with the jacket water heat exchanger, the gas engine and the generator in turn, and the electric water pump and the jacket water heat exchanger are connected through the cold water pipe. There are cold water pipes and hot water pipes in each room; 电动水泵的一端通过三通Ⅰ与外循环冷水相通，三通Ⅰ的另一端经由热水管依次与阀门Ⅰ、三通Ⅱ、缸套水热交换器相连；三通Ⅱ的另一端通过阀门Ⅱ与废气热交换器相连； One end of the electric water pump communicates with the cold water of the external circulation through the tee Ⅰ, and the other end of the tee Ⅰ is connected with the valve Ⅰ, the tee Ⅱ, and the jacket water heat exchanger in turn through the hot water pipe; the other end of the tee Ⅱ passes through the valve Ⅱ Connected to the exhaust gas heat exchanger; 气体发动机的另一端依次与废气热交换器、太阳能集热器、太阳能蓄热水箱、沼气增温保温系统、自力式电控温度控制阀、发电机相连； The other end of the gas engine is sequentially connected with the exhaust gas heat exchanger, solar collector, solar water storage tank, methane heating and heat preservation system, self-operated electronically controlled temperature control valve, and generator; 所述的太阳能集热器上设置了温度传感器Ⅰ，所述的太阳能蓄热水箱上设置了温度传感器Ⅱ和电加热，所述的自力式电控温度控制阀上设置了温度传感器Ⅲ； The solar heat collector is provided with a temperature sensor I, the solar water storage tank is provided with a temperature sensor II and an electric heater, and the self-operated electric temperature control valve is provided with a temperature sensor III; 所述的太阳能集热器和太阳能蓄热水箱间的一根管道上设置了阀门Ⅳ，另一根管道上设置了阀门Ⅴ和温差循环泵； A valve IV is set on one pipeline between the solar heat collector and the solar heat storage tank, and a valve V and a temperature difference circulating pump are set on the other pipeline; 所述的废气热交换器和太阳能集热器间设置了阀门Ⅲ； A valve III is set between the exhaust gas heat exchanger and the solar heat collector; 所述的沼气增温保温系统和自力式电控温度控制阀通过三通Ⅲ相连，三通Ⅲ的另一端与阀门Ⅵ相连； The biogas heating and heat preservation system is connected to the self-operated electronically controlled temperature control valve through a tee III, and the other end of the tee III is connected to the valve VI; 沼气增温系统启动时，电动水泵启动，外循环冷水通过三通Ⅰ、电动水泵进入缸套水热交换器中进行预热，外循环冷水预热后进入气体发动机、发电机进行冷热水交换，外循环冷水加热后进入缸套水热交换器中再次进行冷热水交换，换热后的热水通过三通Ⅱ分为两部分，一部分经由阀门Ⅰ进行热水回流对外循环冷水进行初步预热，另一部分经由阀门Ⅱ进入废气热交换器中与气体发动机尾气进行“气——水热交换”，换热后热水经由阀门Ⅲ流入太阳能集热器中增温，增温后热水经由阀门Ⅳ进入太阳能蓄热器中，随后加温后的热水进入沼气增温系统内的换热器，热水在换热器中以辐射和对流的方式与发酵原料进行热交换，达到沼液增温保温的目的，然后热水经由三通Ⅲ、自力式电控温度控制阀作为循环冷却水进入发电机用于冷却； When the biogas warming system is started, the electric water pump is started, and the cold water in the outer circulation passes through the tee Ⅰ and the electric water pump enters the jacket water heat exchanger for preheating. After preheating, the cold water in the outer circulation enters the gas engine and generator for hot and cold water exchange , the cold water in the outer circulation is heated and enters the jacket water heat exchanger for another cold and hot water exchange. The hot water after heat exchange is divided into two parts through the tee II, and one part is returned to the outer circulation cold water through the valve I for preliminary pre-preparation. The other part enters the exhaust gas heat exchanger through the valve II to perform "gas-water heat exchange" with the exhaust gas of the gas engine. After heat exchange, the hot water flows into the solar collector through the valve III to increase the temperature. Valve IV enters the solar heat accumulator, and then the heated hot water enters the heat exchanger in the biogas heating system, where the hot water exchanges heat with the fermentation raw materials in the form of radiation and convection to reach For the purpose of temperature increase and heat preservation, hot water enters the generator as circulating cooling water through the tee III and self-operated electronically controlled temperature control valve for cooling; 温度传感器Ⅰ、第二温度传感器Ⅱ和第三温度传感器Ⅲ分别检测太阳能集热器、太阳能蓄热水箱、自力式电控温度控制阀的温度；当温度传感器Ⅰ与温度传感器Ⅱ温度差超过5℃时阀门Ⅴ开启，温差循环泵启动对太阳能集热器与太阳能蓄热水箱进行强制水循环； The temperature sensor Ⅰ, the second temperature sensor Ⅱ and the third temperature sensor Ⅲ respectively detect the temperature of the solar collector, the solar hot water storage tank, and the self-operated electric control temperature control valve; when the temperature difference between the temperature sensor Ⅰ and the temperature sensor Ⅱ exceeds 5 When the temperature is ℃, the valve Ⅴ is opened, and the temperature difference circulation pump starts to perform forced water circulation on the solar heat collector and the solar heat storage tank; 当温度传感器Ⅲ检测沼气增温保温系统流出水的温度低于40℃时，自力式电控温度控制阀关闭，阀门Ⅵ打开进行排空，太阳能蓄热水箱上的电加热开启，加热至温度传感器Ⅲ的设定温度； When the temperature sensor Ⅲ detects that the temperature of the water flowing out of the biogas heating and heat preservation system is lower than 40°C, the self-operated electric temperature control valve is closed, the valve Ⅵ is opened for emptying, and the electric heating on the solar water storage tank is turned on to heat up to the temperature The set temperature of sensor Ⅲ; 当沼气增温保温系统的流出水温度达到设定温度后，进入发电机作为循环冷却水用于冷却。 When the temperature of the outflow water from the biogas heating and heat preservation system reaches the set temperature, it enters the generator as circulating cooling water for cooling.
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