Park central heating system
By introducing medium-deep geothermal modules and various auxiliary heating modules into the park's heating system, and combining this with a controller to allocate the heat source, the stability and adaptability issues of traditional park heating systems have been resolved, achieving an efficient and sustainable heating solution.
Patent Information
- Application Number
- CN202610005102.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-05
- Publication Date
- 2026-04-03
AI Technical Summary
Traditional park heating systems have low stability, poor adaptability, and lack sustainability, making it difficult to provide stable heating under different load conditions.
The system combines a medium-deep geothermal heating module with multiple auxiliary heating modules (such as shallow geothermal, solar thermal, thermal storage boilers, and air source heat pumps), and uses a controller to adjust the heating supply according to load changes to form a multi-heat source coordinated heating system.
This improved the stability and adaptability of the park's heating system, ensuring stable heating under different load conditions and reducing carbon emissions and operating costs.
Smart Images
Figure CN121782620A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of park heating technology, and more particularly to a centralized heating system for parks. Background Technology
[0002] As a key carrier of energy consumption and carbon emissions, the zero-carbon transition has become an inevitable trend for industrial parks. The parks have a high load density, and the heating system, as a core component of the park's energy consumption, suffers from low stability, poor adaptability, and lack of sustainability with traditional fossil fuel heating methods and single clean energy heating methods. Summary of the Invention
[0003] This invention provides a centralized heating system for industrial parks to improve the stability, adaptability, and sustainability of heating in industrial parks.
[0004] According to one aspect of the present invention, a centralized heating system for industrial parks is provided, the centralized heating system for industrial parks comprising:
[0005] Medium-deep geothermal heating modules, secondary energy stations, heating pipelines, and controllers;
[0006] The secondary energy station includes multiple auxiliary heating modules;
[0007] The medium-deep geothermal heating module is connected to the user terminal through the heating pipeline network, and multiple auxiliary heating modules are respectively connected to the user terminal through the heating pipeline network. The controller is connected to the medium-deep geothermal heating module and the secondary energy station.
[0008] The controller is used to control the medium-deep geothermal heating module to provide heat to the user end when the ratio of the park's heating load to the peak heating load is less than a first set value; and to control the medium-deep geothermal heating module and at least one of the auxiliary heating modules to jointly provide heat to the user end when the ratio of the park's heating load to the peak heating load is greater than or equal to the first set value.
[0009] Optionally, the secondary energy station further includes a heat exchange station module, through which the medium-deep geothermal heating module supplies heat to the user end.
[0010] Optionally, the auxiliary heating module includes a shallow geothermal heating submodule, a solar thermal heating submodule, a thermal storage boiler heating submodule, and an air source heat pump heating submodule.
[0011] Optionally, the controller is used for:
[0012] When the ratio of the park's heating load to the peak heating load is greater than or equal to a first set value and less than a second set value, the medium-deep geothermal heating module and the shallow geothermal heating sub-module are controlled to jointly supply heat to the user end through the heating pipeline network.
[0013] When the ratio of the park's heating load to the peak heating load is greater than or equal to the second set value and less than the third set value, the medium-deep geothermal heating module, the solar thermal heating sub-module, and the thermal storage boiler heating sub-module are controlled to jointly supply heat to the user end.
[0014] When the ratio of the park's heating load to the peak heating load is greater than or equal to the third set value and less than the fourth set value, the medium-deep geothermal heating module and the air source heat pump heating sub-module are controlled to jointly provide heating to the user end.
[0015] When the ratio of the park's heating load to the peak heating load is equal to the fourth set value, the medium-deep geothermal heating module, the shallow geothermal heating sub-module, the solar thermal heating sub-module, the thermal storage boiler heating sub-module, and the air source heat pump heating sub-module are controlled to jointly provide heating to the user end.
[0016] Optionally, the first setting value is 25%, the second setting value is 50%, the third setting value is 70%, and the fourth setting value is 100%.
[0017] Optionally, the solar thermal heating submodule includes a photovoltaic-thermal integrated module, which converts sunlight into electrical energy and thermal energy, and the thermal energy is transmitted to the user end through the heating pipeline network.
[0018] Optionally, the medium-deep geothermal heating module includes a geothermal well, and the depth of the geothermal well ranges from 1000m to 3000m.
[0019] Optionally, the shallow geothermal module includes multiple buried pipes; the spacing between two adjacent buried pipes ranges from 4m to 6m.
[0020] The vertical distance between the buried pipe and the ground surface ranges from 100m to 200m.
[0021] Optionally, the air source heat pump heating submodule includes an ultra-low temperature air source heat pump unit, wherein the ultra-low temperature air source heat pump unit has a stable operating temperature range of -20℃ to 5℃.
[0022] Optionally, the park's centralized heating system also includes a power module, which supplies power to the medium-deep geothermal heating module and the secondary energy station.
[0023] The centralized heating system for industrial parks according to this invention includes a medium-deep geothermal heating module, a secondary energy station, a heating pipeline network, and a controller. The controller controls the medium-deep geothermal heating module and auxiliary heating modules to provide heating to users based on the park's heating load. When the ratio of the park's heating load to the peak heating load is less than a first set value, the controller controls the medium-deep geothermal heating module to provide heating to users. When the ratio of the park's heating load to the peak heating load is greater than or equal to the first set value, the controller controls both the medium-deep geothermal heating module and the auxiliary heating modules to jointly provide heating to users. By using the medium-deep geothermal heating module as the core heating source and multiple auxiliary heating modules as auxiliary heating sources, the system's stability is improved, ensuring stable heating for the park under different meteorological conditions and heating loads. The controller controls the medium-deep geothermal heating module and auxiliary heating modules to provide heating to users based on changes in the park's heating load, improving the system's adaptability and sustainability.
[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is a schematic diagram of the structural modules of a centralized heating system for a park provided in an embodiment of the present invention. Detailed Implementation
[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.
[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.
[0029] This invention provides a centralized heating system for industrial parks. Figure 1 This invention provides a schematic diagram of the structural modules of a centralized heating system for a park, comprising:
[0030] Medium-deep geothermal heating module 10, secondary energy station 20, heating pipeline network 30 and controller 40.
[0031] The secondary energy station 20 includes multiple auxiliary heating modules 21.
[0032] The medium-deep geothermal heating module 10 is connected to the user end through the heating pipeline network 30, and multiple auxiliary heating modules 21 are connected to the user end through the heating pipeline network 30 respectively. The controller 40 is connected to the medium-deep geothermal heating module 10 and the secondary energy station 20.
[0033] The controller 40 is used to control the deep geothermal heating module 10 to provide heat to the user end when the ratio of the heating load of the park to the peak heating load is less than a first set value; when the ratio of the heating load of the park to the peak heating load is greater than or equal to the first set value, the controller 40 controls the deep geothermal heating module 10 and at least one auxiliary heating module 21 to jointly provide heat to the user end.
[0034] Specifically, the medium-deep geothermal heating module 10 is the core module for user-end heating. The module employs coaxial sleeve technology, utilizing concentrically arranged inner and outer pipes to form a ring channel. This allows low-temperature water to fully exchange heat with the geothermal rock mass deep underground, transforming it into hot water. This hot water is then supplied to users through the heat exchange station module in the secondary energy station and the heating network 30. The controller 40 controls the auxiliary heating module 20 in the secondary energy station to assist the medium-deep geothermal heating module 10 in providing heating to users based on changes in the park's heating load. This ensures stable heating for the park under different heating loads, with heating temperature fluctuations ≤ ±2℃.
[0035] When the ratio of the park's heating load to the peak heating load is less than the first set value, it indicates that the park's heating is in a low-load state. Only the medium-deep geothermal heating module 10 needs to supply heat to the user end through the heat exchange station module. When the ratio of the park's heating load to the peak heating load is greater than the first set value, it indicates that the park's heating load is high. Only the medium-deep geothermal heating module 10 can supply heat to the user end to meet the heating demand. The medium-deep geothermal heating module 10 and at least one auxiliary heating module 21 need to work together to supply heat to the user end to improve the stability and sustainability of the heating system.
[0036] The centralized heating system for industrial parks according to this invention includes a medium-deep geothermal heating module, a secondary energy station, a heating pipeline network, and a controller. The controller controls the medium-deep geothermal heating module and auxiliary heating modules to provide heating to users based on the park's heating load. When the ratio of the park's heating load to the peak heating load is less than a first set value, the controller controls the medium-deep geothermal heating module to provide heating to users. When the ratio of the park's heating load to the peak heating load is greater than or equal to the first set value, the controller controls both the medium-deep geothermal heating module and the auxiliary heating modules to jointly provide heating to users. By using the medium-deep geothermal heating module as the core heating source and multiple auxiliary heating modules as auxiliary sources, the system's stability is improved, ensuring stable heating for the park under different heating loads. The controller controls the medium-deep geothermal heating module and auxiliary heating modules to provide heating to users based on changes in the park's heating load, improving the system's adaptability and sustainability.
[0037] Optionally, the secondary energy station 20 also includes a heat exchange station module 22, through which the medium-deep geothermal heating module 10 supplies heat to the user end.
[0038] Specifically, the heat exchange station module 22 includes a water tank with excellent thermal insulation performance, which reduces heat loss of the hot water output from the medium-deep geothermal heating module 10 and stores the hot water output from the medium-deep geothermal heating module 10. For example, the water tank can be a stainless steel tank with an outer polyurethane insulation layer. The thermal conductivity of the insulation layer is less than or equal to 0.024 W / (m·K). Water tanks of different volumes can be set according to the size of the park, ranging from 5000 m³ to 40000 m³.
[0039] Optionally, the auxiliary heating modules include shallow geothermal heating submodule 23, solar thermal heating submodule 24, thermal storage boiler heating submodule 25, and air source heat pump heating submodule 26.
[0040] Specifically, the shallow geothermal heating submodule 23, the solar thermal heating submodule 24, the thermal storage boiler heating submodule 25, and the air source heat pump heating submodule 26 are all modules that utilize clean energy to generate heat, reducing the system's carbon emissions and lowering its operating costs. The system's scale and operating parameters can be flexibly adjusted based on factors such as the geothermal resource conditions, solar irradiance intensity, and climate characteristics of the park's location, making it suitable for different types of parks.
[0041] Optionally, controller 40 is used for:
[0042] When the ratio of the heating load to the peak heating load in the park is greater than or equal to the first set value and less than the second set value, the deep geothermal heating module 10 and the shallow geothermal heating sub-module 23 are controlled to jointly supply heat to the user end through the heating pipeline network.
[0043] When the ratio of the park's heating load to the peak heating load is greater than or equal to the second set value and less than the third set value, the deep geothermal heating module 10, the solar thermal heating sub-module 24, and the thermal storage boiler heating sub-module 25 are controlled to jointly provide heating to the user end.
[0044] When the ratio of the park's heating load to the peak heating load is greater than or equal to the third set value and less than the fourth set value, the deep geothermal heating module 10 and the air source heat pump heating sub-module 26 are controlled to jointly provide heating to the user end.
[0045] When the ratio of the heating load to the peak heating load in the park is equal to the fourth set value, the deep geothermal heating module 10, the shallow geothermal heating sub-module 23, the solar thermal heating sub-module 24, the thermal storage boiler heating sub-module 25, and the air source heat pump heating sub-module 26 are controlled to jointly provide heating to the user end.
[0046] Specifically, when the ratio of the park's heating load to the peak heating load is greater than or equal to the first set value and less than the second set value, it indicates that the park's heating is in a low to medium load operation state, the heating demand is moderate and has not reached the high load range. At this time, the controller 40 controls the deep geothermal heating module 10 and the shallow geothermal heating sub-module 23 to jointly supply heat to the user end through the heating network, so that the heat energy output of the deep geothermal heating module 10 and the shallow geothermal heating sub-module 23 complement each other, and completes the rational allocation of heat energy in the system. This ensures the stability of heating while avoiding ineffective heat energy output, and takes into account both heating efficiency and energy saving.
[0047] When the ratio of the park's heating load to its peak heating load is greater than or equal to the second set value and less than the third set value, it indicates that the park's heating is operating at a medium-to-high load. At this time, the controller 40 controls the deep geothermal heating module 10, the solar thermal heating submodule 24, and the thermal storage boiler heating submodule 25 to jointly provide heating to the user end. This ensures the stability and continuity of the system's heating while improving the utilization rate of clean energy, balancing heating efficiency with the rationality of energy allocation. For example, the thermal storage boiler heating submodule 25 uses phase change thermal storage materials. When surplus electricity is generated in the park, it stores heat; when the park's heating load increases, it releases heat.
[0048] When the ratio of the park's heating load to the peak heating load is greater than or equal to the third set value and less than the fourth set value, it indicates that the park's heating is in a high-load operation state. The controller 40 controls the deep geothermal heating module 10 and the air source heat pump heating sub-module 26 to jointly provide heating to the user end to ensure stable heating of the system.
[0049] When the ratio of the park's heating load to the peak heating load is equal to the fourth set value, it indicates that the park's heating load is the same as the peak heating load. In this case, the medium-deep geothermal heating module 10, the shallow geothermal heating sub-module 23, the solar thermal heating sub-module 24, the thermal storage boiler heating sub-module 25, and the air source heat pump heating sub-module 26 are required to provide heating to the user end to ensure the stability of the system's heating.
[0050] Optionally, the first setting is 25%, the second setting is 50%, the third setting is 70%, and the fourth setting is 100%.
[0051] Specifically, when the ratio of the park's heating load to the peak heating load is greater than or equal to 25% and less than 50%, the park's heating is in a low-to-medium load operation state; when the ratio is greater than or equal to 50% and less than 70%, the park's heating is in a medium-to-high load operation state; when the ratio is greater than or equal to 70% and less than 100%, the park's heating is in a high load operation state; and when the ratio is 100%, the park's heating load is the same as the peak heating load. The controller 40 controls the deep geothermal heating module 10 and the auxiliary heating module 21 to provide heating to the user end based on the park's heating load, thereby improving the stability of the heating system.
[0052] Optionally, the solar thermal heating submodule 24 includes a photovoltaic-thermal integrated module, which converts sunlight into electrical energy and thermal energy, and the thermal energy is transmitted to the user end through the heating pipeline network 30.
[0053] Specifically, photovoltaic-thermal integrated modules (PVT) can be installed on the rooftops of parks and parking lots to convert the short-wavelength (visible light) of sunlight into electrical energy and the long-wavelength (near-infrared) into heat energy, achieving a dual output of "power generation + heat generation". The heat energy is then transmitted to the user end through the heating network 30.
[0054] Optionally, the medium-deep geothermal heating module 10 includes a geothermal well, and the depth of the geothermal well ranges from 1000m to 3000m.
[0055] Specifically, an inner and outer pipe are installed in the wellbore of the geothermal well to form a ring channel, which allows water to fully exchange heat with the geothermal rock mass in the deep strata. After that, the water is supplied to the user end through the heating pipeline network 30 via the heat exchange station module.
[0056] If the depth of a geothermal well is too shallow, the water temperature will be low, the water volume will be insufficient, and the resource utilization rate will be low, which will not be able to meet the heating demand. If the depth of a geothermal well is too deep, the drilling difficulty will increase, resulting in higher construction costs. Setting the depth of geothermal wells in the range of 1000m-3000m can meet the heating demand while reducing construction costs.
[0057] Optionally, the shallow geothermal module 23 includes multiple buried pipes; the spacing between two adjacent buried pipes ranges from 4m to 6m.
[0058] The vertical distance between the buried pipe and the ground surface ranges from 100m to 200m.
[0059] Specifically, considering the park's greening conditions, multiple underground pipes are buried in the public green areas. If the spacing between adjacent underground pipes is too small, thermal interference occurs, and the temperature fields of the surrounding soil overlap, reducing the system's stability and sustainability. Conversely, if the spacing is too large, the number of underground pipes is reduced, resulting in insufficient effective geothermal heat exchange coverage and decreased heat exchange capacity. Setting the spacing between adjacent underground pipes within the range of 4m-6m can improve the system's stability, sustainability, and heat exchange capacity.
[0060] If the vertical distance between the buried pipe and the ground surface is too small, meaning the installation depth is too shallow, the buried pipe becomes susceptible to surface temperature fluctuations, leading to reduced heat exchange efficiency and stability. Conversely, if the vertical distance is too large, it increases drilling costs and complexity, resulting in higher system construction costs. Setting the vertical distance between the buried pipe and the ground surface within the range of 100m-200m improves the system's heat exchange efficiency and stability while reducing construction costs.
[0061] Optionally, the air source heat pump heating submodule 26 includes an ultra-low temperature air source heat pump unit, which has a stable operating temperature range of -20℃ to 5℃.
[0062] Specifically, the ultra-low temperature air source heat pump unit can operate stably in an ambient temperature range of -20℃ to 5℃, adapting to low temperature and severe outdoor conditions, ensuring a continuous output of sufficient heat energy to meet the heating needs of the park in winter. When the park's heating load equals the peak heating load, the air source heat pump heating submodule 26 acts as a peak-shaving device for heating.
[0063] Optionally, the park's centralized heating system also includes a power module that supplies power to the medium-deep geothermal heating module 10 and the secondary energy station 20.
[0064] Specifically, the power module supplies power to the medium-deep geothermal heating module 10 and the secondary energy station 20, ensuring the stable operation of the medium-deep geothermal heating module 10 and the secondary energy station 20, ensuring continuous power supply for the system's geothermal heat exchange and heat energy transmission, and meeting the energy supply needs of the park's heating system.
[0065] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.
[0066] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A centralized heating system for industrial parks, characterized in that, include: Medium-deep geothermal heating modules, secondary energy stations, heating pipelines, and controllers; The secondary energy station includes multiple auxiliary heating modules; The medium-deep geothermal heating module is connected to the user terminal through the heating pipeline network, and multiple auxiliary heating modules are respectively connected to the user terminal through the heating pipeline network. The controller is connected to the medium-deep geothermal heating module and the secondary energy station. The controller is used to control the medium-deep geothermal heating module to provide heat to the user end when the ratio of the park's heating load to the peak heating load is less than a first set value, and to control the medium-deep geothermal heating module and at least one of the auxiliary heating modules to jointly provide heat to the user end when the ratio of the park's heating load to the peak heating load is greater than or equal to the first set value.
2. The centralized heating system for industrial parks according to claim 1, characterized in that: The secondary energy station also includes a heat exchange station module, through which the medium-deep geothermal heating module supplies heat to the user end.
3. The centralized heating system for industrial parks according to claim 1, characterized in that: The auxiliary heating module includes a shallow geothermal heating submodule, a solar thermal heating submodule, a thermal storage boiler heating submodule, and an air source heat pump heating submodule.
4. The centralized heating system for industrial parks according to claim 3, characterized in that: The controller is used for: When the ratio of the park's heating load to the peak heating load is greater than or equal to a first set value and less than a second set value, the medium-deep geothermal heating module and the shallow geothermal heating sub-module are controlled to jointly supply heat to the user end through the heating pipeline network. When the ratio of the park's heating load to the peak heating load is greater than or equal to the second set value and less than the third set value, the medium-deep geothermal heating module, the solar thermal heating sub-module, and the thermal storage boiler heating sub-module are controlled to jointly supply heat to the user end. When the ratio of the park's heating load to the peak heating load is greater than or equal to the third set value and less than the fourth set value, the medium-deep geothermal heating module and the air source heat pump heating sub-module are controlled to jointly provide heating to the user end. When the ratio of the park's heating load to the peak heating load is equal to the fourth set value, the medium-deep geothermal heating module, the shallow geothermal heating sub-module, the solar thermal heating sub-module, the thermal storage boiler heating sub-module, and the air source heat pump heating sub-module are controlled to jointly provide heating to the user end.
5. The centralized heating system for industrial parks according to claim 4, characterized in that: The first setting value is 25%, the second setting value is 50%, the third setting value is 70%, and the fourth setting value is 100%.
6. The centralized heating system for industrial parks according to claim 3, characterized in that: The solar thermal heating submodule includes a photovoltaic-thermal integrated module, which converts sunlight into electrical energy and thermal energy, and the thermal energy is transmitted to the user end through the heating pipeline network.
7. The centralized heating system for industrial parks according to claim 1, characterized in that: The medium-deep geothermal heating module includes a geothermal well, and the depth of the geothermal well ranges from 1000m to 3000m.
8. The centralized heating system for industrial parks according to claim 3, characterized in that: The shallow geothermal module includes multiple buried pipes; the spacing between two adjacent buried pipes ranges from 4m to 6m. The vertical distance between the buried pipe and the ground surface ranges from 100m to 200m.
9. The centralized heating system for industrial parks according to claim 3, characterized in that: The air source heat pump heating submodule includes an ultra-low temperature air source heat pump unit, which has a stable operating temperature range of -20℃ to 5℃.
10. The centralized heating system for industrial parks according to claim 1, characterized in that, Also includes: A power module that supplies power to the medium-deep geothermal heating module and the secondary energy station.