Cross-seasonal heat energy supply and utilization system

Abstract

The utility model discloses a cross-seasonal heat energy supply and utilization system, and belongs to the technical field of cross-seasonal heat supply. The system comprises a solar heat collector, the solar heat collector is connected with a heat storage water body unit, and the heat storage water body unit is connected with a useful energy terminal module; biomass boilers and heat exchangers are arranged between the solar heat collector and the heat storage water body unit and between the heat storage water body unit and the energy consumption terminal module. According to the cross-seasonal heat energy supply and utilization system, through the cross-seasonal heat storage technology, the system can collect and store heat energy in the period where solar energy is rich in summer for use in winter, and therefore the seasonal heat energy supply and demand contradiction is effectively relieved, the summer solar energy which is possibly wasted originally can be stored and reused, and the energy consumption is reduced. And the overall energy utilization efficiency is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cross-season heating, in particular to a cross-season heat energy supply and utilization system. Background Art

[0002] In unique geographical environments such as rural areas and islands, distributed energy systems stand out with their incomparable application value and urgent needs, which are due to the common grid access difficulties, high energy costs and lagging infrastructure faced by these areas. Distributed energy, as a collection of new energy technologies, provides a path to stable, economical and environmentally friendly energy solutions for rural areas and islands, and its importance and influence are growing in today's society.

[0003] In the application of distributed energy in rural areas and islands, the historical technical focus has been on the generation and distribution of electricity, but thermal energy, which is vital and indispensable to local communities, has often been overlooked. Thermal energy plays an important role in ensuring clean water resources, promoting agricultural production, maintaining ecological balance, and enhancing the appeal of tourism. However, the seasonal imbalance in energy supply and demand unique to rural areas and islands, and the sharp contradiction between the abundant solar energy resources in summer and the demand for thermal energy in winter, form a sharp contrast, making the existing energy system unable to cope with the complex needs of these regions, especially in key areas such as promoting agricultural modernization, enhancing tourism competitiveness, and optimizing the quality of life of residents. Its limitations are particularly prominent.

[0004] It is particularly noteworthy that the existing bottlenecks in solar energy conversion and storage technology have led to frequent "wasted light" phenomena, that is, the excess solar energy in summer cannot be effectively utilized, which not only constitutes a huge waste of precious natural resources, but also seriously restricts the full release of energy potential in rural areas and islands. Therefore, a more flexible and efficient heat supply and management system that can accurately match the complex needs of rural areas and islands is needed to scientifically respond to the challenges brought about by seasonal fluctuations and achieve balanced distribution and efficient utilization of energy. Utility Model Content

[0005] The utility model aims to provide a cross-seasonal heat energy supply and utilization system, which is used to solve the technical problem of unbalanced seasonal energy supply and demand in rural areas and islands in the prior art.

[0006] To achieve the above-mentioned purpose, an embodiment of the utility model provides a cross-seasonal heat supply and utilization system, including: a solar thermal collector, the solar thermal collector is connected to a hot water storage body unit, and the hot water storage body unit is connected to a useful energy terminal module;

[0007] Biomass boilers and heat exchangers are arranged between the solar collector and the hot water storage unit, and between the hot water storage unit and the energy terminal module.

[0008] Preferably, the heat storage water body unit includes a low-temperature heat storage unit, a medium-temperature heat storage unit, and a high-temperature heat storage unit.

[0009] Preferably, the energy-using terminal module includes a low-temperature heat-using unit, a medium-temperature heat-using unit, and a high-temperature heat-using unit.

[0010] Preferably, the low-temperature heat-using unit includes a soil warming unit and a water entertainment unit.

[0011] Preferably, the medium-temperature heat-using unit includes a sewage treatment unit, an aquaculture unit, and a facility agriculture temperature control unit.

[0012] Preferably, the high-temperature heat-using unit includes a seawater desalination unit, an agricultural product processing unit, and a heating hot water pipe network unit.

[0013] Preferably, a first heat exchanger is provided between the solar collector and the heat storage water body unit.

[0014] Preferably, a second heat exchanger is provided between the high-temperature heat-using unit and the heat storage water body unit, a third heat exchanger is provided between the medium-temperature heat-using unit and the heat storage water body unit, and a fourth heat exchanger is provided between the low-temperature heat-using unit and the heat storage water body unit.

[0015] Preferably, temperature monitors are provided on both the heat storage water body unit and the heat exchanger.

[0016] Preferably, water pumps and valves are provided in the pipelines between the solar collector and the heat storage water body unit and between the heat storage water body unit and the energy-using terminal module.

[0017] In summary, the beneficial effects of the present utility model are as follows:

[0018] 1. The cross-seasonal heat energy supply and utilization system of the present utility model enables the system to collect and store heat energy during the period of rich solar energy in summer for winter use through the cross-seasonal heat storage technology, thus effectively alleviating the seasonal heat energy supply-demand contradiction, preserving and reusing the summer solar energy that might otherwise be wasted, and significantly improving the overall energy utilization efficiency.

[0019] 2. The cross-seasonal heat energy supply and utilization system of the present utility model uses renewable energy (solar energy and biomass energy) as the main heat source, reduces the dependence on fossil fuels, reduces carbon emissions and the release of other pollutants, helps to maintain the regional ecological environment, and promotes the development of ecological agriculture and green tourism.

[0020] 3. The cross-seasonal heat energy supply and utilization system of the present utility model closely adheres to the diversified needs of rural areas and islands, providing a comprehensive heat energy supply and demand solution for them. Based on the cross-seasonal water body heat storage technology, this system makes full use of the rich solar energy resources in rural areas and islands as the main heat supply source, supplemented by biomass fuel as a flexible heat supplement mechanism, supplying energy to a specially designed cross-seasonal hot water storage body. Subsequently, the heat energy of the hot water storage body unit provides customized heat energy support for the energy-consuming terminal modules through a refined cascade extraction and distribution strategy. This system not only significantly enhances the efficiency of distributed energy use but also catalyzes the multi-dimensional integration and development of new energy in rural areas and islands.

[0021] 4. The cross-seasonal heat energy supply and utilization system of the present utility model adopts a diversified energy supply structure, allowing the dynamic adjustment of the use of solar energy and biomass energy according to actual needs. This multi-source complementary mode enhances the stability and reliability of heat energy supply and better meets the diversified heat energy needs of rural areas and islands in different seasons and different fields.

[0022] 5. The cross-seasonal heat energy supply and utilization system of the present utility model drives the comprehensive development of the economy by providing stable and efficient energy support for multiple industries such as facility agriculture, rural tourism, and agricultural product processing. At the same time, this system also indirectly promotes the production capacity improvement and industrial upgrading of the above industries, increases regional income, and accelerates the optimization and modernization process of the economic structure.

[0023] 6. The energy-consuming terminal modules of the cross-seasonal heat energy supply and utilization system of the present utility model include modules directly related to the improvement of residents' living quality, such as heating hot water pipe network units and sewage treatment units. Furthermore, this system improves the living comfort of rural and island residents and promotes the construction of a healthy and livable environment by providing clean and economical energy solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the cross-seasonal heat energy supply and utilization system of the present utility model.

[0025] Among them, 1 - solar collector, 2 - first heat exchanger, 3 - valve, 4 - second biomass boiler, 5 - seawater desalination unit, 6 - agricultural product processing unit, 7 - heating hot water pipe network unit, 8 - sewage treatment unit, 9 - aquaculture unit, 10 - facility agriculture temperature control unit, 11 - water entertainment unit, 12 - water pump, 13 - soil warming unit, 14 - third heat exchanger, 15 - fourth heat exchanger, 16 - temperature monitor, 17 - first biomass boiler, 18 - second heat exchanger, 19 - hot water storage body unit. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without making creative efforts shall fall within the scope of protection of the present disclosure.

[0027] The present utility model provides a cross-seasonal heat energy supply and utilization system, as Figure 1 shown, which includes: a solar collector 1 of a heat supply main body. The solar collector 1 is connected to a hot water storage unit 19 of a heat storage main body through a pipeline. The hot water storage unit 19 is connected to an energy consumption terminal module of an energy consumption main body through a pipeline. A biomass boiler and a heat exchanger are provided between the solar collector 1 and the hot water storage unit 19, and between the hot water storage unit 19 and the energy consumption terminal module. The biomass boiler is a heat supplement facility, and the heat exchanger is a medium for heat exchange between the heat supply main body, the heat storage main body, and the energy consumption main body.

[0028] The hot water storage unit 19 includes a low-temperature heat storage unit, a medium-temperature heat storage unit, and a high-temperature heat storage unit. The high-temperature heat storage unit, the medium-temperature heat storage unit, and the low-temperature heat storage unit are respectively located in the upper, middle, and lower parts of the hot water storage unit 19. The low-temperature heat storage unit is used to store water at about 50 °C, the medium-temperature heat storage unit is used to store water at about 70 °C, and the high-temperature heat storage unit is used to store water at about 90 °C. A first heat exchanger 2 and a first biomass boiler 17 are provided between the solar collector 1 and the hot water storage unit 19. A water pump 12 is provided in the pipeline between the first heat exchanger 2 and the solar collector 1, and the first heat exchanger 2 is connected to a temperature monitor 16 for monitoring the water temperature. The hot water heated by the solar collector 1 enters the first heat exchanger 2 to exchange heat with the water in the low-temperature heat storage unit of the hot water storage unit 19. After heat exchange, the original hot water heated by the solar collector 1 flows to the hot water storage unit 19 for storage, and the original water in the low-temperature heat storage unit flows to the solar collector 1 for continuous heating.

[0029] Specific heat collection and storage process: The hot water heated by the solar collector 1 enters the first heat exchanger 2 to exchange heat with the water at about 50 °C coming out from the bottom of the low-temperature heat storage unit. The solar collector 1 continues to heat the water after heat exchange, and the water in the hot water storage unit 19 is stored in the corresponding heat storage unit in the hot water storage unit 19 according to the water temperature. When the water temperature is higher than 80 °C, the first biomass boiler 17 heats the water to above 90 °C and then injects it into the high-temperature heat storage unit for storage; when the water temperature of the water injected into the hot water storage unit 19 after heat exchange is higher than 80 °C, the first biomass boiler 17 heats the water to above 90 °C and then injects it into the high-temperature heat storage unit for storage; when the water temperature of the water injected into the hot water storage unit 19 after heat exchange is lower than 80 °C, it is directly injected into the medium-temperature heat storage unit for storage. Temperature monitors 16 are installed in both the medium-temperature heat storage unit and the high-temperature heat storage unit. If the temperature of the high-temperature heat storage unit is lower than that of the medium-temperature heat storage unit, the first biomass boiler 17 is activated for heat compensation until the temperature of the high-temperature heat storage unit is higher than that of the medium-temperature heat storage unit, so as to ensure good stratification of the hot water storage unit 19, that is, from top to bottom, the temperature gets lower and lower. The heat compensation method of the first biomass boiler 17 is to extract cold water from the low-temperature heat storage unit, heat it to above 90 °C and supplement it to the high-temperature heat storage unit.

[0030] The energy consumption terminal module includes a low-temperature heat consumption unit, a medium-temperature heat consumption unit, and a high-temperature heat consumption unit. The low-temperature heat consumption unit is the main heat consumption body at about 50 °C, the medium-temperature heat consumption unit is the main heat consumption body at about 70 °C, and the high-temperature heat consumption unit is the main heat consumption body at about 90 °C. Among them, the low-temperature heat consumption unit includes a soil warming unit 13 and a water entertainment unit 11, the medium-temperature heat consumption unit includes a sewage treatment unit 8, an aquaculture unit 9, and a facility agriculture temperature control unit 10, and the high-temperature heat consumption unit includes a seawater desalination unit 5, an agricultural product processing unit 6, and a heating hot water pipe network unit 7. The waste materials of the facility agriculture temperature control unit 10 and the agricultural product processing unit 6 in the energy consumption terminal main body can provide biomass fuel for the biomass boiler, and the clean water generated by the sewage treatment unit 8 and the seawater desalination unit 5 can supplement water to the hot water storage unit 19.

[0031] A second heat exchanger 18 is provided between the high-temperature heat consumption unit and the hot water storage unit 19, a third heat exchanger 14 is provided between the medium-temperature heat consumption unit and the hot water storage unit 19, a fourth heat exchanger 15 is provided between the low-temperature heat consumption unit and the hot water storage unit 19, and a second biomass boiler 4 is provided between the hot water storage unit 19 and the energy consumption terminal module. Temperature monitors 16 are connected to both the second heat exchanger 18 and the third heat exchanger 14. According to the heat consumption demand, hot water is extracted from the hot water storage unit 19 and supplied to the energy consumption terminal module through pipelines via the heat exchangers.

[0032] The specific heat energy supply is as follows: The hot water in the hot water storage unit 19 first exchanges heat for the water used by the high-temperature heat-using unit through the second heat exchanger 18. The temperature of the hot water entering the second heat exchanger 18 is above 90 °C. If the temperature monitor 16 detects insufficient temperature, the second biomass boiler 4 is started for supplementary heating until the temperature reaches above 90 °C. The outlet water of the second heat exchanger 18 is above 70 °C. The water that has exchanged heat through the second heat exchanger 18 continues to enter the third heat exchanger 14 to exchange heat for the medium-temperature heat-using unit. The temperature of the hot water entering the third heat exchanger 14 is above 70 °C. If the temperature monitor 16 detects insufficient temperature, water is extracted from the medium-temperature heat storage unit or the high-temperature heat storage unit in the hot water storage unit 19 for supplementation until the temperature reaches above 70 °C. The water that has exchanged heat returns to the low-temperature heat storage unit.

[0033] Valves 3 are provided in the pipelines between the solar collector 1 and the hot water storage unit 19 and between the hot water storage unit 19 and the energy-using terminal module. The valves 3 are used to control the opening and closing of each pipeline.

[0034] The heat utilization component is as follows: The water of the energy-using terminal module is heated to about 90 °C through the second heat exchanger 18 and supplied to the seawater desalination unit 5, the agricultural product processing unit 6, and the heating hot water pipe network unit 7 in the high-temperature heat-using unit. The water that has used heat directly returns to the second heat exchanger 18 for heat exchange and continues to circulate; the water of the energy-using terminal module is heated to about 70 °C through the third heat exchanger 14 to supply heat to the sewage treatment unit 8, the aquaculture unit 9, and the facility agriculture temperature control unit 10 in the medium-temperature heat-using unit. The water that has used heat enters the fourth heat exchanger 15 at about 50 °C for further heat exchange. The fourth heat exchanger 15 supplies heat to the low-temperature heat-using unit. The water that has exchanged heat enters the third heat exchanger 14 and circulates.

[0035] The working process of the cross-seasonal heat energy supply and utilization system is as follows: The hot water heated by the solar collector 1 enters the first heat exchanger 2 to exchange heat with the water in the low-temperature heat storage unit of the hot water storage unit 19. After heat exchange, the original hot water heated by the solar collector 1 flows to the hot water storage unit 19 for storage, and the original water in the low-temperature heat storage unit flows to the solar heat collector for continuous heating. The hot water storage unit 19 extracts hot water from the hot water storage unit 19 according to the heat demand of the heat-using terminal module and supplies heat to the heat-using terminal module through the pipeline via the heat exchanger.

[0036] Although the specific implementation manners of the present invention have been described in detail in conjunction with the accompanying drawings, it should not be construed as a limitation on the protection scope of this patent. Within the scope described in the claims, various modifications and deformations that can be made by those skilled in the art without creative labor still fall within the protection scope of this patent.

Claims

1. A cross-seasonal heat energy supply and utilization system, characterized in that, Comprising: A solar collector, the solar collector is connected to a hot water storage unit, and the hot water storage unit is connected to an energy consumption terminal module; A biomass boiler and a heat exchanger are provided between the solar collector and the hot water storage unit, and between the hot water storage unit and the energy consumption terminal module.

2. The cross-seasonal heat energy supply and utilization system according to claim 1, characterized in that: The hot water storage unit includes a low-temperature heat storage unit, a medium-temperature heat storage unit, and a high-temperature heat storage unit.

3. A cross-seasonal heat energy supply and utilization system according to claim 1 or 2, characterized in that: The energy consumption terminal module includes a low-temperature heat utilization unit, a medium-temperature heat utilization unit, and a high-temperature heat utilization unit.

4. The cross-seasonal heat energy supply and utilization system according to claim 3, characterized in that: The low-temperature heat utilization unit includes a soil warming unit and a water entertainment unit.

5. The cross-season heat energy supply and utilization system according to claim 3, characterized in that: The medium-temperature heat utilization unit includes a sewage treatment unit, an aquaculture unit, and a facility agriculture temperature control unit.

6. The cross-seasonal heat energy supply and utilization system according to claim 3, characterized in that: The high-temperature heat utilization unit includes a seawater desalination unit, an agricultural product processing unit, and a heating hot water pipe network unit.

7. The cross-seasonal heat energy supply and utilization system according to claim 1, characterized in that: A first heat exchanger is provided between the solar collector and the hot water storage unit.

8. The cross-seasonal heat energy supply and utilization system according to claim 3, characterized in that: A second heat exchanger is provided between the high-temperature heat utilization unit and the hot water storage unit, a third heat exchanger is provided between the medium-temperature heat utilization unit and the hot water storage unit, and a fourth heat exchanger is provided between the low-temperature heat utilization unit and the hot water storage unit.

9. The cross-seasonal heat energy supply and utilization system according to claim 1, wherein: Temperature monitors are provided on both the hot water storage unit and the heat exchanger.

10. A cross-seasonal heat energy supply and utilization system according to claim 1, characterized in that: Pumps and valves are provided in the pipelines between the solar collector and the hot water storage unit, and between the hot water storage unit and the energy consumption terminal module.

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