Multi-source coupling low-carbon heat supply system based on renewable energy sources

Abstract

The utility model relates to the technical field of heat supply systems, and discloses a multi-source coupling low-carbon heat supply system based on renewable energy sources, which comprises an electric energy utilization system and a user terminal, the electric energy utilization system comprises a wind power generation assembly, a photovoltaic power generation assembly and a power grid system, the electric energy output end is connected with the input ends of the water source and ground source heat pump unit, the air source heat pump unit and the electric heat storage device; the water source and ground source heat pump unit comprises a water source heat pump unit and a ground source heat pump unit, and the water source heat pump unit receives and releases sewage and exchanges heat with cooling water through a heat exchange medium. By coupling various clean energy sources to collect heat energy, primary energy sources are saved, operation and maintenance cost is reduced, carbon emission is reduced, energy conservation and emission reduction are achieved, a traditional heat supply mode is replaced, and better heat supply service is provided for a user side.

Description

Technical Field

[0001] The utility model relates to the technical field of heating systems, and in particular to a multi-source coupling low-carbon heating system based on renewable energy. Background Art

[0002] Traditional building heating is carried out using coal-fired boilers, gas boilers or municipal central heating. The burning of coal or natural gas in the heating process will produce a large amount of carbon dioxide emissions and other emissions, causing environmental pollution. In addition, the boiler combustion efficiency is low, and a dedicated person must be arranged to monitor the boiler during operation, resulting in high operating costs and high maintenance costs.

[0003] At present, there is a multi-source coupled heat pump system, which is mainly composed of an air source heat pump unit and a geothermal source utilization unit. The air source heat pump unit is used to compress and circulate Freon or tetrafluoroethane, and can provide heating or cooling to the terminal heat exchange equipment connected thereto, while the geothermal source utilization unit is used to circulate water or oil, and can promote heat exchange between Freon or tetrafluoroethane and underground materials through water or oil, so that the air source heat pump unit can not only use underground heat to assist the air source heat pump unit in heating the terminal heat exchange equipment in the heating season, but also use underground heat to assist the air source heat pump unit in cooling the terminal heat exchange equipment in the cooling season, thereby effectively reducing the heat pump system's consumption of electricity.

[0004] Although the known multi-source coupled heat pump system has achieved good results in saving electric energy, people do not want to stop there, but hope to achieve better results in saving electric energy.

[0005] In the Chinese patent with publication number CN 218096680 U, a multi-source coupled heat pump system is disclosed, which is particularly suitable for factories and includes: an air source heat pump unit, which is used to compress and circulate the first heat exchange medium, and can selectively provide heat or cooling to the terminal heat exchange equipment connected thereto; a ground heat source utilization unit, which is connected to the air source heat pump unit and is used to circulate the second heat exchange medium, and can promote the first heat exchange medium to exchange heat with underground materials through the second heat exchange medium; a waste heat source utilization unit, which is connected to the air source heat pump unit, and is used to receive and release cooling water in the factory and promote the first heat exchange medium to exchange heat with the cooling water. Compared with the prior art, the multi-source coupled heat pump system can more effectively reduce the consumption of electric energy while achieving cooling and heating.

[0006] However, the number of heat sources available with existing technology can be further expanded. Utility Model Content

[0007] The purpose of the utility model is to solve the problems existing in the prior art and to propose a multi-source coupling low-carbon heating system based on renewable energy.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A multi-source coupling low-carbon heating system based on renewable energy, comprising an electric energy utilization system and a user end, wherein the electric energy utilization system comprises a wind power generation component, a photovoltaic power generation component and a power grid system, and its electric energy output end is connected to a water source ground source heat pump unit, an air source heat pump unit and an input end of an electric heat storage device;

[0010] The water-source ground-source heat pump unit includes a water-source heat pump unit and a ground-source heat pump unit. The water-source heat pump unit receives and releases sewage and performs heat exchange with cooling water through a heat exchange medium.

[0011] It also includes solar thermal collectors and enterprise industrial waste heat utilization units;

[0012] The solar energy heat collection device, the enterprise's industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device all exchange heat with the user side through the pipeline system.

[0013] Preferably, the solar thermal collector, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device all include a heat collection side and a heat exchange side.

[0014] Preferably, the pipeline system includes a total output pipeline, a total input pipeline, a plurality of output branch pipes and a plurality of input branch pipes, the total output pipeline and the total input pipeline are respectively connected to the output end and the input end of the user side, the output ends of the solar thermal collector, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the heat exchange side of the electric heat storage device are all connected to the corresponding output branch pipes, the input ends of the solar thermal collector, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the heat exchange side of the electric heat storage device are all connected to the corresponding input branch pipes, the other end of the input branch pipe is connected to the total input pipeline, and the other end of the output branch pipe is connected to the total output pipeline.

[0015] Preferably, the input branch pipe is provided with a first valve, the output branch pipe is provided with a circulation pump and two second valves, and the two second valves are respectively located on both sides of the circulation pump.

[0016] Preferably, a second circulation pump and two fourth valves are provided on the total output pipeline, the two fourth valves are respectively located on both sides of the second circulation pump, and a third valve is provided on the total input pipeline.

[0017] Preferably, it also includes a control terminal, which is wirelessly connected to the communication modules in the solar thermal collection device, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device through the communication module. A temperature sensor is arranged inside the thermal collection side, and a stirring device is arranged inside the main input pipeline. The temperature sensor and the stirring device are connected to the corresponding communication module through the corresponding control processor.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model collects heat energy by coupling multiple clean energy sources, saves primary energy, reduces operation and maintenance costs, reduces carbon emissions, achieves energy conservation and emission reduction, replaces traditional heating methods, and provides better heating services for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a multi-source coupled low-carbon heating system based on renewable energy proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the control principle of a stirring device of a multi-source coupled low-carbon heating system based on renewable energy proposed by the utility model.

[0022] In the figure: 1. Wind power generation component; 2. Photovoltaic power generation component; 3. Power grid system; 4. Solar thermal collector; 5. Enterprise industrial waste heat utilization unit; 6. Water source ground source heat pump unit; 7. Air source heat pump unit; 8. Electric heat storage device; 9. Total output pipeline; 10. Total input pipeline; 11. Output branch pipe; 12. Input branch pipe; 13. First valve; 14. Second valve; 15. Third valve; 16. Fourth valve; 17. First circulation pump; 18. Second circulation pump; 19. Control terminal; 20. Communication module; 21. Control processor; 22. Stirring device; 23. User side; 24. Temperature sensor. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Reference Figure 1 and Figure 2 , a multi-source coupling low-carbon heating system based on renewable energy, including an electric energy utilization system and a user end, wherein the electric energy utilization system includes a wind power generation component 1, a photovoltaic power generation component 2 and a power grid system 3, and its electric energy output end is connected to the input end of a water source ground source heat pump unit 6, an air source heat pump unit 7 and an electric heat storage device 8;

[0025] The water-source ground-source heat pump unit 6 includes a water-source heat pump unit and a ground-source heat pump unit. The water-source heat pump unit receives and releases sewage and performs heat exchange with cooling water through a heat exchange medium.

[0026] It also includes a solar energy heat collection device 4 and an enterprise industrial waste heat utilization unit 5;

[0027] The solar energy heat collecting device 4, the enterprise industrial waste heat utilization unit 5, the water source ground source heat pump unit 6, the air source heat pump unit 7 and the electric heat storage device 8 all exchange heat with the user side 23 through the pipeline system.

[0028] When the device is in use, during the heating period, the solar thermal collector 4, the water source ground source heat pump unit 6, the air source heat pump unit 7, the electric heat storage device 8, and the waste heat of industrial enterprises provide effective heat energy for users; sewage, geothermal energy, and air are used as heat sources for the water source ground source heat pump unit 6 and the air source heat pump unit 7 respectively, and wind power generation, photovoltaic power generation, and the power grid are used as primary input energy sources for the water source ground source heat pump unit 6 and the air source heat pump unit 7, driving the units to recover heat from sewage, geothermal energy, and air, and convert them into high-quality heat energy for users; solar energy and thermal devices can use solar energy to generate high-quality heat energy for users; the electric heat storage device 8 uses wind power generation, photovoltaic power generation, and the power grid as input energy to convert electrical energy into heat energy and store it in the electric heat storage device 8 for heating users; waste heat from industrial enterprises can directly provide heating to users;

[0029] This system collects heat energy by coupling multiple clean energy sources, saves primary energy, reduces operation and maintenance costs, reduces carbon emissions, achieves energy conservation and emission reduction, replaces traditional heating methods, and provides better heating services for the user side 23.

[0030] In this embodiment, the solar thermal collector 4, the enterprise industrial waste heat utilization unit 5, the water source ground source heat pump unit 6, the air source heat pump unit 7 and the electric heat storage device 8 all include a heat collection side and a heat exchange side. The heat collection side is used to collect heat, and the heat exchange side is used to exchange heat with the user side 23.

[0031] In this embodiment, the pipeline system includes a total output pipeline 9, a total input pipeline 10, a plurality of output branch pipes 11 and a plurality of input branch pipes 12, the total output pipeline 9 and the total input pipeline 10 are respectively connected to the output end and the input end of the user side 23, the output ends of the heat exchange sides of the solar thermal collector 4, the enterprise industrial waste heat utilization unit 5, the water source ground source heat pump unit 6, the air source heat pump unit 7 and the electric heat storage device 8 are all connected to the corresponding output branch pipe 11, the solar thermal collector 4, the enterprise industrial waste heat utilization unit 5, the water source ground source heat pump unit 6, the air source heat pump unit 7 and the electric heat storage device 8 are connected to the corresponding output branch pipe 11, The input ends of the heat exchange sides of the industrial waste heat utilization unit 5, the water source ground source heat pump unit 6, the air source heat pump unit 7 and the electric heat storage device 8 are all connected to the corresponding input branch pipe 12, the other end of the input branch pipe 12 is connected to the main input pipeline 10, and the other end of the output branch pipe 11 is connected to the main output pipeline. The user side 23 is connected to the heat exchange side through the main output pipeline 9 and several output branch pipes 11 for heat exchange, and the heat is brought back to the user side 23 from the input branch pipe 12 and the main input pipeline 10 to realize heat exchange.

[0032] In this embodiment, a first valve 13 is provided on the input branch pipe 12, and a first circulation pump 17 and two second valves 14 are provided on the output branch pipe. The two second valves 14 are respectively located on both sides of the circulation pump. The first valve 13 and the second valve 14 are used to control the flow of liquid in the corresponding pipeline, and the circulation pump provides power.

[0033] In this embodiment, a second circulation pump 18 and two fourth valves 16 are provided on the total output pipeline 9, and the two fourth valves 16 are respectively located on both sides of the second circulation pump 18. A third valve 15 is provided on the total input pipeline 10. The third valve 15 and the fourth valve 16 are used to control the flow of liquid in the corresponding pipelines, and the second circulation pump 18 provides power.

[0034] In this embodiment, a control terminal 19 is also included. The control terminal 19 is wirelessly connected to the communication module 20 in the solar thermal collector 4, the enterprise industrial waste heat utilization unit 5, the water source ground source heat pump unit 6, the air source heat pump unit 7 and the electric heat storage device 8 through the communication module 20. A temperature sensor 24 is arranged inside the thermal collector side, and a stirring device 22 is arranged inside the main input pipeline 10. The temperature sensor 24 and the stirring device 22 are both connected to the corresponding communication module 20 through the corresponding control processor 21. The temperature sensor 24 can sense the temperature inside the thermal collector side. When the temperature inside some thermal collector sides is low, it can be selected to mix the output with the corresponding equipment on the high temperature thermal collector side, and use the stirring device 22 to mix it and send heat to the user side 23, ensuring that low heat can also be utilized and not wasted.

[0035] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-source coupled low-carbon heating system based on renewable energy, characterized in that: It includes an electric energy utilization system and a user end. The electric energy utilization system includes a wind power generation component, a photovoltaic power generation component and a power grid system. Its electric energy output end is connected to the input end of a water source ground source heat pump unit, an air source heat pump unit and an electric heat storage device; The water-source ground-source heat pump unit includes a water-source heat pump unit and a ground-source heat pump unit. The water-source heat pump unit receives and releases sewage and performs heat exchange with cooling water through a heat exchange medium. It also includes solar thermal collectors and enterprise industrial waste heat utilization units; The solar energy heat collection device, the enterprise's industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device all exchange heat with the user side through the pipeline system.

2. A multi-source coupled low-carbon heating system based on renewable energy according to claim 1, characterized in that: The solar energy heat collection device, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device all include a heat collection side and a heat exchange side.

3. A multi-source coupled low-carbon heating system based on renewable energy according to claim 2, characterized in that: The pipeline system includes a total output pipeline, a total input pipeline, a plurality of output branch pipes and a plurality of input branch pipes. The total output pipeline and the total input pipeline are respectively connected to the output end and the input end of the user side. The output ends of the heat exchange sides of the solar thermal collector, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device are all connected to the corresponding output branch pipes. The input ends of the heat exchange sides of the solar thermal collector, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device are all connected to the corresponding input branch pipes. The other end of the input branch pipe is connected to the total input pipeline, and the other end of the output branch pipe is connected to the total output pipeline.

4. A multi-source coupling low-carbon heating system based on renewable energy according to claim 3, characterized in that: The input branch pipe is provided with a first valve, and the output branch pipe is provided with a circulation pump and two second valves, and the two second valves are respectively located on both sides of the circulation pump.

5. A multi-source coupling low-carbon heating system based on renewable energy according to claim 4, characterized in that: The total output pipeline is provided with a second circulation pump and two fourth valves, the two fourth valves are respectively located on both sides of the second circulation pump, and the total input pipeline is provided with a third valve.

6. A multi-source coupling low-carbon heating system based on renewable energy according to claim 4, characterized in that: It also includes a control terminal, which is wirelessly connected to the communication modules in the solar thermal collection device, the enterprise industrial waste heat utilization unit, the water source ground source heat pump unit, the air source heat pump unit and the electric heat storage device through the communication module. A temperature sensor is arranged inside the thermal collection side, and a stirring device is arranged inside the main input pipeline. The temperature sensor and the stirring device are connected to the corresponding communication module through the corresponding control processor.

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