CN111502937A - Solar thermal power generation and heat pump waste heat comprehensive utilization system - Google Patents
Solar thermal power generation and heat pump waste heat comprehensive utilization system Download PDFInfo
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- 238000010248 power generation Methods 0.000 title claims abstract description 29
- 239000002918 waste heat Substances 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 65
- 238000009833 condensation Methods 0.000 claims abstract description 25
- 230000005494 condensation Effects 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000001816 cooling Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
- F03G6/065—Devices for producing mechanical power from solar energy with solar energy concentrating means having a Rankine cycle
- F03G6/067—Binary cycle plants where the fluid from the solar collector heats the working fluid via a heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/005—Using steam or condensate extracted or exhausted from steam engine plant by means of a heat pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/04—Other domestic- or space-heating systems using heat pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
Description
技术领域technical field
本申请涉及多能互补能量利用技术领域，尤其涉及一种光热发电及热泵余热综合利用系统。The present application relates to the technical field of multi-energy complementary energy utilization, and in particular, to a system for comprehensive utilization of solar thermal power generation and heat pump waste heat.
背景技术Background technique
近年来，由于工业化发展，需要燃烧化石能源等常规能源，化石能源燃烧过程中产生大量的烟灰及氧化物等有害物质，造成了非常严重的环境污染，已经引起人们的广泛关注。In recent years, due to the development of industrialization, it is necessary to burn conventional energy such as fossil energy, and a large amount of soot and oxides and other harmful substances are generated during the combustion of fossil energy, which has caused very serious environmental pollution and has attracted widespread attention.
随着化石能源的储量逐渐减少，如何提升能源的利用效率成为业内关注的焦点。尤其在电厂领域，火力发电产生了大量的废水和废气等低温余热没有得到有效利用，一些钢铁企业冬季供暖需要开动高能耗低效率的燃煤小锅炉或者直接耗用高品质的蒸汽进行采暖，会因冬夏季节耗气量的差异而导致蒸汽供应困难甚至影响工业生产，因此，如何更加高效地利用低温余热、同时不影响工业生产，成为行业内亟待解决的技术问题。With the gradual reduction of fossil energy reserves, how to improve the efficiency of energy utilization has become the focus of the industry. Especially in the field of power plants, low-temperature waste heat such as a large amount of waste water and exhaust gas generated by thermal power generation has not been effectively utilized. Some iron and steel enterprises need to start small coal-fired boilers with high energy consumption and low efficiency for heating in winter or directly consume high-quality steam for heating, which will cause the heating problem. Due to the difference in gas consumption in winter and summer, steam supply is difficult and even affects industrial production. Therefore, how to use low-temperature waste heat more efficiently without affecting industrial production has become a technical problem that needs to be solved urgently in the industry.
利用低温余热供热的电厂，提高了电厂的热负荷利用率，降低煤耗、节约用水、提升了电厂运行的经济性，同时获得较好的经济和社会收益。但是，单纯依靠低温余热供热，在供热需求较大时，电厂锅炉的低温余热供热不足以满足这种需求，需要寻找一种弥补供热缺口的能量供给方式。Power plants that use low-temperature waste heat for heat supply increase the thermal load utilization rate of the power plant, reduce coal consumption, save water, improve the economy of power plant operation, and obtain better economic and social benefits. However, simply relying on low-temperature waste heat for heating, when the heating demand is large, the low-temperature waste heat of the power plant boiler is not enough to meet this demand, and it is necessary to find an energy supply method to make up for the heating gap.
发明内容SUMMARY OF THE INVENTION
本申请提供了一种光热发电及热泵余热综合利用系统，以解决当前清洁能源无法完全满足供热需求的问题。The present application provides a system for comprehensive utilization of solar thermal power generation and heat pump waste heat to solve the problem that the current clean energy cannot fully meet the heating demand.
本申请采用的技术方案如下：The technical scheme adopted in this application is as follows:
一种光热发电及热泵余热综合利用系统，包括冷凝换热子系统、光热换热子系统和供热管网；A solar thermal power generation and heat pump waste heat comprehensive utilization system, comprising a condensation heat exchange subsystem, a photothermal heat exchange subsystem and a heating pipe network;
所述冷凝换热子系统与所述供热管网通过热泵连接，所述光热换热子系统与所述供热管网通过换热器连接；The condensation heat exchange subsystem is connected with the heat supply pipe network through a heat pump, and the photothermal heat exchange subsystem is connected with the heat supply pipe network through a heat exchanger;
所述冷凝换热子系统包括冷凝器和冷凝供热管网，所述冷凝器设置在所述冷凝供热管网中，所述冷凝器中的循环冷却水吸收汽轮机乏汽潜热后流进所述热泵，通过热泵加热所述供热管网中的水，所述冷凝供热管网与冷却塔连接，所述冷凝换热系统用于冷却汽轮机排汽，降低机组冷源损失；The condensation heat exchange subsystem includes a condenser and a condensation heat supply pipe network, the condenser is arranged in the condensation heat supply pipe network, and the circulating cooling water in the condenser absorbs the latent heat of the exhaust steam of the steam turbine and flows into the system. The heat pump is used to heat the water in the heat supply pipe network, the condensation heat supply pipe network is connected to the cooling tower, and the condensation heat exchange system is used to cool the exhaust steam of the steam turbine and reduce the loss of the cooling source of the unit;
所述光热换热子系统包括光热集热器和光热供热管网，所述光热集热器用于将光热传导至供热工质，再将所述供热工质输送至所述光热供热管网。The photothermal heat exchange subsystem includes a photothermal heat collector and a photothermal heat supply pipe network, and the photothermal heat collector is used to conduct light and heat to the heating medium, and then transport the heating medium to the Describe the solar thermal heating pipe network.
可选的，还包括ORC发电子系统，所述ORC发电子系统通过换热器与所述光热供热管网相连，所述ORC发电子系统包括ORC工质管网、ORC装置和发电机，所述ORC装置通过所述ORC工质管网中的工质吸收所述光热供热管网的能量用于给所述发电机发电。Optionally, it also includes an ORC power generation subsystem, the ORC power generation subsystem is connected to the solar thermal heating pipe network through a heat exchanger, and the ORC power generation subsystem includes an ORC working medium pipe network, an ORC device and a generator , the ORC device absorbs the energy of the CSP pipe network through the working medium in the ORC working medium pipe network to generate electricity for the generator.
可选的，还包括驱动热源子系统，所述驱动热源子系统从所述光热供热管网中引出驱动管网，所述驱动管网沿供热工质流动方向通过所述热泵后回流接入所述光热集热器。Optionally, it also includes a drive heat source subsystem, the drive heat source subsystem leads out a drive pipe network from the photothermal heat supply pipe network, and the drive pipe network passes through the heat pump along the flow direction of the heating medium and then flows back. Connect to the photothermal collector.
可选的，还包括水泵，所述水泵设置在所述光热供热管网中以及所述供热管网中。Optionally, a water pump is also included, and the water pump is arranged in the solar thermal heating pipe network and in the heating pipe network.
可选的，还包括水阀，所述水阀设置在所述光热供热管网中。Optionally, a water valve is also included, and the water valve is arranged in the photothermal heating pipe network.
可选的，还包括补水泵，所述补水泵设置在所述光热供热管网中。Optionally, a make-up water pump is also included, and the make-up water pump is arranged in the solar thermal heating pipe network.
可选的，还包括子级供热管网，所述子级供热管网通过子级换热站与所述供热管网相连。Optionally, a sub-level heat supply pipe network is also included, and the sub-level heat supply pipe network is connected to the heat supply pipe network through a sub-level heat exchange station.
可选的，还包括加热器，所述加热器设置在所述供热管网中。Optionally, a heater is also included, and the heater is arranged in the heating pipe network.
采用本申请的技术方案的有益效果如下：The beneficial effects of adopting the technical solution of the present application are as follows:
本申请的光热发电及热泵余热综合利用系统，包括冷凝换热子系统、光热换热子系统和供热管网；一方面通过利用光热给供热管网加热，另一方面接收电厂锅炉的汽轮机排放的热蒸汽，通过热泵将热蒸汽中的能量输送至供热管网，实现了两种清洁能源的协同利用，节约了资源，对环境友好，同时满足了人们的供热需求。The solar thermal power generation and heat pump waste heat comprehensive utilization system of the present application includes a condensation heat exchange subsystem, a solar thermal heat exchange subsystem and a heating pipe network; on the one hand, the heating pipe network is heated by using light and heat, and on the other hand, it receives power from the power plant. The hot steam emitted by the steam turbine of the boiler is transported to the heating pipe network through the heat pump, which realizes the synergistic utilization of two clean energy sources, saves resources, is environmentally friendly, and at the same time meets people's heating needs.
附图说明Description of drawings
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the present application more clearly, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without creative work, the Additional drawings can be obtained from these drawings.
图1为本申请一个实施例的结构示意图；1 is a schematic structural diagram of an embodiment of the application;
图2为本申请另一实施例的结构示意图；2 is a schematic structural diagram of another embodiment of the application;
图示说明：Illustration description:
其中，1-冷凝换热子系统、11-冷凝器、12-冷凝供热管网、2-光热换热子系统、21-光热集热器、22-光热供热管网、3-供热管网、4-换热器、5-热泵、6-驱动热源子系统、7-ORC发电子系统、8-子级供热管网。Among them, 1-condensing heat exchange subsystem, 11-condenser, 12-condensing heat supply pipe network, 2-photothermal heat exchange subsystem, 21-photothermal heat collector, 22-photothermal heat supply pipe network, 3 -Heating pipe network, 4-heat exchanger, 5-heat pump, 6-drive heat source subsystem, 7-ORC power generation subsystem, 8-sub-stage heating pipe network.
具体实施方式Detailed ways
下面将详细地对实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下实施例中描述的实施方式并不代表与本申请相一致的所有实施方式。仅是与权利要求书中所详述的、本申请的一些方面相一致的系统和方法的示例。Embodiments will be described in detail below, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples are not intended to represent all implementations consistent with this application. are merely exemplary of systems and methods consistent with some aspects of the present application as recited in the claims.
参见图1，为本申请一个实施例的结构示意图。Referring to FIG. 1 , it is a schematic structural diagram of an embodiment of the application.
本申请提供的一种光热发电及热泵余热综合利用系统，包括冷凝换热子系统1、光热换热子系统2和供热管网3；A system for comprehensive utilization of solar thermal power generation and heat pump waste heat provided by this application includes a condensation heat exchange subsystem 1, a solar thermal heat exchange subsystem 2 and a heating pipe network 3;
所述冷凝换热子系统1与所述供热管网3通过热泵5连接，所述光热换热子系统2与所述供热管网3通过换热器4连接；The condensation heat exchange subsystem 1 is connected with the heat supply pipe network 3 through a heat pump 5, and the photothermal heat exchange subsystem 2 is connected with the heat supply pipe network 3 through a heat exchanger 4;
所述冷凝换热子系统1包括冷凝器11和冷凝供热管网12，所述冷凝器11设置在所述冷凝供热管网12中，所述冷凝器11中的循环冷却水吸收汽轮机乏汽潜热后流进所述热泵5，通过热泵5加热所述供热管网3中的水，所述冷凝供热管网12与冷却塔连接，所述冷凝换热系统用于冷却汽轮机排汽，降低机组冷源损失；The condensation heat exchange subsystem 1 includes a condenser 11 and a condensation heat
所述光热换热子系统2包括光热集热器21和光热供热管网22，所述光热集热器21用于将光热传导至供热工质，再将所述供热工质输送至所述光热供热管网22。The photothermal heat exchange subsystem 2 includes a
本实施例中，冷凝换热子系统1用于收集汽轮机排放的蒸汽能量，由于蒸汽本身蕴含一部分能量，这部分能量通常散失掉了，没有回收利用，本实施例通过回收这部分蒸汽，将能量通过热泵5输送至供热管网3，有利于节约能源，环保而且清洁，满足了一部分供热管网3的能量需求。另外，光热集热器21吸收太阳光的能量，并将此能量通过供热工质输送至光热供热管网22，再通过换热器4把能量传递给供热管网3。In this embodiment, the condensing heat exchange subsystem 1 is used to collect the steam energy discharged from the steam turbine. Since the steam itself contains a part of the energy, this part of the energy is usually lost and not recycled. In this embodiment, by recovering this part of the steam, the energy The heat pump 5 is transported to the heating pipe network 3 , which is conducive to energy saving, environmental protection and cleanliness, and meets the energy demand of a part of the heating pipe network 3 . In addition, the solar
可选的，还包括ORC发电子系统7，所述ORC发电子系统7通过换热器4与所述光热供热管网22相连，所述ORC发电子系统7包括ORC工质管网、ORC装置和发电机，所述ORC装置通过所述ORC工质管网中的工质吸收所述光热供热管网22的能量用于给所述发电机发电。Optionally, it also includes an ORC power generation subsystem 7, the ORC power generation subsystem 7 is connected to the photothermal heating pipe network 22 through the heat exchanger 4, and the ORC power generation subsystem 7 includes an ORC working medium pipe network, An ORC device and a generator, the ORC device absorbs the energy of the solar thermal heating pipe network 22 through the working medium in the ORC working medium pipe network to generate electricity for the generator.
结合附图2，为本申请另一实施例的结构示意图，在本实施例中，为了更加高效地利用光热，将光热供热管网22中的能量一部分引流至ORC发电子系统7，通过ORC装置将能量转换至发电机的运行能量，发电机发电产生电能。2 is a schematic structural diagram of another embodiment of the application. In this embodiment, in order to utilize light and heat more efficiently, part of the energy in the light and heat heating pipe network 22 is diverted to the ORC power generation subsystem 7, The energy is converted to the operating energy of the generator through the ORC device, and the generator generates electricity to generate electricity.
可选的，还包括驱动热源子系统6，所述驱动热源子系统6从所述光热供热管网22中引出驱动管网，所述驱动管网沿供热工质流动方向通过所述热泵5后回流接入所述光热集热器21。Optionally, it also includes a driving
结合附图2，在本实施例中，所述驱动热源子系统6用于驱动热泵5运行，热泵5吸收驱动热源子系统6的能量后进入正常工作状态，将冷凝换热子系统1的能量传导至供热管网3。2, in this embodiment, the driving
可选的，还包括水泵，所述水泵设置在所述光热供热管网22中以及所述供热管网3中。Optionally, a water pump is also included, and the water pump is provided in the solar thermal heating pipe network 22 and the heating pipe network 3 .
水泵的设置有利于光热供热管网22和供热管网3中的水循环流动且具有一定的压力和流速，方便对供热水平的调节。The arrangement of the water pump is conducive to the circulation of water in the photothermal heating pipe network 22 and the heating pipe network 3 and has a certain pressure and flow rate, which facilitates the adjustment of the heating level.
可选的，还包括水阀，所述水阀设置在所述光热供热管网22中。Optionally, a water valve is also included, and the water valve is arranged in the solar thermal heating pipe network 22 .
可选的，还包括补水泵，所述补水泵设置在所述光热供热管网22中。Optionally, a make-up water pump is also included, and the make-up water pump is arranged in the solar thermal heating pipe network 22 .
可选的，还包括子级供热管网8，所述子级供热管网8通过子级换热站与所述供热管网3相连。Optionally, a sub-level heat supply pipe network 8 is also included, and the sub-level heat supply pipe network 8 is connected to the heat supply pipe network 3 through a sub-level heat exchange station.
可选的，还包括加热器，所述加热器设置在所述供热管网3中。Optionally, a heater is also included, and the heater is arranged in the heating pipe network 3 .
本申请的光热发电及热泵余热综合利用系统，包括冷凝换热子系统1、光热换热子系统2和供热管网3；一方面通过利用光热给供热管网3加热，另一方面接收电厂锅炉的汽轮机排汽放出的热量，通过热泵5将热蒸汽中的能量输送至供热管网3，实现了两种清洁能源的协同利用，节约了资源，对环境友好，同时满足了人们的供热需求。The solar thermal power generation and heat pump waste heat comprehensive utilization system of the present application includes a condensation heat exchange subsystem 1, a photothermal heat exchange subsystem 2 and a heating pipe network 3; on the one hand, the heating pipe network 3 is heated by using light and heat, and on the other hand On the one hand, it receives the heat released by the steam turbine exhaust of the power plant boiler, and transfers the energy in the hot steam to the heating pipe network 3 through the heat pump 5, which realizes the synergistic utilization of the two clean energy sources, saves resources, is environmentally friendly, and satisfies the people's heating needs.
本申请提供的实施例之间的相似部分相互参见即可，以上提供的具体实施方式只是本申请总的构思下的几个示例，并不构成本申请保护范围的限定。对于本领域的技术人员而言，在不付出创造性劳动的前提下依据本申请方案所扩展出的任何其他实施方式都属于本申请的保护范围。Similar parts between the embodiments provided in the present application may be referred to each other. The specific embodiments provided above are just a few examples under the general concept of the present application, and do not constitute a limitation on the protection scope of the present application. For those skilled in the art, any other implementations expanded according to the solution of the present application without creative work fall within the protection scope of the present application.
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