A space energy composite energy utilization system

Abstract

The present invention relates to the field of space energy technology, and particularly discloses a space energy composite energy utilization system, comprising a low-temperature heat collecting mechanism, a high-temperature heat collecting mechanism, a loop circulation pipeline and a heat storage tank; the loop circulation pipeline is connected in parallel to the low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism, and the loop circulation pipeline is connected to the heat storage tank; the low-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is lower than a preset value, and the high-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is higher than the preset value; the heat storage tank is used to store heat input by the loop circulation pipeline; when the solar radiation intensity is lower than the preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the low-temperature heat collecting mechanism; when the solar radiation intensity is higher than the preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the high-temperature heat collecting mechanism; different heat collecting mechanisms can be selected according to different heat source characteristics to achieve efficient, reasonable and comprehensive distribution of heat source use, effectively improve energy efficiency, and achieve the purpose of energy conservation and emission reduction.

Description

Technical Field

[0001] The present invention relates to the field of space energy technology, and in particular to a space energy composite energy utilization system. Background Art

[0002] In today's social trend of advocating energy conservation and emission reduction, efficiency and sustainability are one of the main principles of human energy consumption; as human comfort needs gradually increase, energy consumption has increased significantly, and the research and development and application of energy-saving utilization of energy consumption are urgent.

[0003] Currently, space energy utilization technology is an important means of saving energy consumption, and solar energy is the focus of attention in space energy utilization technology. Therefore, this application focuses on the use of solar energy for innovation and improvement. Many systems that use solar energy for heating are divided into two types based on the form of heat collection: "active" and "passive". Active solar heating systems are composed of solar collectors, heat storage devices, transmission equipment and control components. They use solar collectors and heat carriers to heat the room through storage and equipment. The most basic working mechanism of passive solar heating systems is the "greenhouse effect". The outer envelope structure of a passive solar house needs to have a large thermal resistance, and there must be enough heavy materials indoors to maintain good heat storage performance of the house. Active solar heating systems are more efficient in utilizing solar energy than passive solar heating systems, so they are a more popular research direction.

[0004] Existing active solar heating systems usually lay solar panels where the sun can shine. However, these solar panels are usually the same. The same solar panel may have a higher heat collection efficiency in a certain range of solar radiation intensity, but a poor heat collection efficiency in another range, resulting in different heat collection efficiencies under different solar radiation intensities. That is, it is impossible to flexibly select collectors with different heat collection efficiencies according to different solar radiation intensities, resulting in low heat collection efficiency.

[0005] Therefore, it is of great significance to study a space energy composite energy utilization system that can flexibly select collectors with different collection efficiencies according to the intensity of solar radiation. Summary of the Invention

[0006] The purpose of the present invention is to provide a space energy composite energy utilization system to solve the problem of low heat collection efficiency of existing active solar heating systems.

[0007] In order to solve the above technical problems, the present invention provides a space energy composite energy utilization system, including a low-temperature heat collecting mechanism, a high-temperature heat collecting mechanism, a loop circulation pipeline and a heat storage tank; the loop circulation pipeline is connected in parallel to the low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism, and the loop circulation pipeline is connected to the heat storage tank; the low-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is lower than a preset value, and the high-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is higher than a preset value; the heat storage tank is used to store the heat input by the loop circulation pipeline; when it is lower than the preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the low-temperature heat collecting mechanism; when it is higher than the preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the high-temperature heat collecting mechanism.

[0008] In one embodiment, the low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism are connected in parallel with the loop circulation pipeline through a multi-way valve, and the multi-way valve is used to selectively connect the loop circulation pipeline to the low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism.

[0009] In one embodiment, the low-temperature heat collection mechanism includes a plurality of low-temperature heat collectors, and the plurality of low-temperature heat collectors are connected in parallel to the multi-way valve.

[0010] In one embodiment, a first solenoid valve is connected between each of the plurality of low-temperature collectors and the multi-way valve, and the first solenoid valve is used to control the operation of different low-temperature collectors.

[0011] In one embodiment, the low-temperature collector includes a first heat collecting tube and a flat-plate heat collector; the first heat collecting tube is connected to the loop circulation pipeline through the multi-way valve, the first heat collecting tube is arranged in the flat-plate heat collector, the first heat collecting tube is in contact with the surface of the flat-plate heat collector, and the flat-plate heat collector is used to absorb solar energy and exchange heat with the first heat collecting tube.

[0012] In one embodiment, the high-temperature heat collection mechanism includes a plurality of high-temperature heat collectors, and the plurality of high-temperature heat collectors are connected in parallel to the multi-way valve.

[0013] In one embodiment, a second solenoid valve is connected between each of the plurality of high-temperature heat collectors and the multi-way valve, and the second solenoid valve is used to control the operation of different high-temperature heat collectors.

[0014] In one embodiment, the high-temperature collector includes a second heat collecting tube and a vacuum tube heat collector; the second heat collecting tube is connected to the loop circulation pipeline through the multi-way valve, the second heat collecting tube is in contact with the surface of the vacuum tube heat collector, and the vacuum tube heat collector is used to absorb solar energy and exchange heat with the second heat collecting tube.

[0015] In one embodiment, a control mechanism is further included; the control mechanism includes a detection module and a control module; the detection module is used to detect the intensity of solar radiation and output the measured value signal to the control module; the control module is used to compare the measured value with the preset value, and according to the comparison result, control the loop circulation pipeline to be connected to the low-temperature heat collection mechanism or the high-temperature heat collection mechanism.

[0016] In one embodiment, the liquid in the loop circulation pipe is thermal oil.

[0017] The beneficial effects of the present invention are as follows:

[0018] Since the loop circulation pipe is connected in parallel to the low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism, the loop circulation pipe is connected to the heat storage tank, and the heat storage tank is used to store the heat input by the loop circulation pipe. Therefore, when in use, the low-temperature heat collecting mechanism exchanges the collected high-calorie liquid to the heat storage tank through the loop circulation pipe, thereby realizing the heat collection cycle of the low-temperature heat collecting mechanism, and the high-temperature heat collecting mechanism exchanges the collected high-calorie liquid to the heat storage tank through the loop circulation pipe, thereby realizing the heat collection cycle of the high-temperature heat collecting mechanism, so as to realize the basis for heat collection.

[0019] And since the low-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is lower than a preset value, and the high-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is higher than a preset value, when it is lower than the preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the low-temperature heat collecting mechanism; when it is higher than the preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the high-temperature heat collecting mechanism. When applied, the heat collecting mechanism can be selected according to the different radiation intensities of solar energy to ensure that a higher heat collection efficiency is maintained in different solar radiation ranges, so as to reduce heat loss and reduce unnecessary water circulation losses.

[0020] To sum up, by setting up the parallel connection between the low-temperature heat collection mechanism and the high-temperature heat collection mechanism and the loop circulation pipeline, different heat collection mechanisms are selected according to different heat source characteristics, so as to achieve efficient, reasonable and comprehensive distribution of heat sources, effectively improve energy efficiency, and achieve the purpose of energy conservation and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the implementation. Obviously, the drawings described below are only some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure provided by the preferred embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall application state provided by the preferred embodiment of the present invention.

[0024] The reference numerals are as follows:

[0025] 1. Low-temperature heat collection mechanism; 10. Low-temperature heat collector; 11. First solenoid valve;

[0026] 2. High-temperature heat collecting mechanism; 20. High-temperature heat collector; 21. Second solenoid valve;

[0027] 3. Loop circulation pipeline; 30. First pipe section; 31. Third pipe section; 32. Exhaust valve; 33. Solenoid valve for pipe section 1; 34. Solenoid valve for pipe section 2; 35. Filter check valve; 36. Working medium circulation pump; 37. Cleaning solenoid valve; 38. Inlet and outlet solenoid valves;

[0028] 4. Heat storage tank; 40. Water inlet pipe; 41. Water outlet pipe; 42. Automatic water replenishment device;

[0029] 5. Multi-way valve;

[0030] 6. Control mechanism;

[0031] 7. Indoor domestic hot water system. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] There are many technical fields in space energy technology, among which solar energy utilization technology is the most concerned technology. Therefore, this plan will focus on the problems existing in existing solar energy technology and make improvements.

[0034] Existing active solar heating systems are usually laid on the surface of the roof to provide thermal energy for heating systems and hot water equipment in industrial and residential buildings. The system can use the thermal energy of the sun to generate hot water or steam to provide energy for the heating and hot water needs of the building.

[0035] It usually uses collectors to collect solar energy, which can directly convert solar energy into thermal energy. The collected solar energy is then stored through equipment such as hot water storage tanks. The stored thermal energy can be distributed to various areas of the building through pipes as hot water or steam, thereby providing hot water and heating for the building. Solar energy does not produce pollutants such as carbon dioxide, so it is very friendly to the environment. It can also save energy and reduce operating costs.

[0036] However, existing active solar heating systems usually use the same collector or solar panel. However, the same solar panel may have a high heat collection efficiency only in a certain range of solar radiation intensity, but poor heat collection efficiency in other ranges. That is, some solar panels may have a high heat collection efficiency when the solar radiation intensity is high, but almost no heat collection when the solar radiation intensity is low. Or some solar panels may be able to effectively collect heat when the solar radiation intensity is low, but may only collect part of the solar radiation when the solar radiation intensity is high, resulting in low heat collection efficiency.

[0037] In order to solve the above problems, this solution provides a space energy composite energy utilization system, the core of which is to set up collectors with different heat collection efficiencies to absorb solar radiation of different intensities and improve the heat collection efficiency.

[0038] Specifically, the following will be described with preferred embodiments, please refer to Figure 1 and Figure 2 The space energy composite energy utilization system includes a control mechanism 6, a low-temperature heat collecting mechanism 1, a high-temperature heat collecting mechanism 2, a loop circulation pipeline 3 and a heat storage tank 4. The loop circulation pipeline 3 is connected in parallel to the low-temperature heat collecting mechanism 1 and the high-temperature heat collecting mechanism 2, and the loop circulation pipeline 3 is connected to the heat storage tank 4. The control mechanism 6 controls whether the loop circulation pipeline 3 is connected to the low-temperature heat collecting mechanism 1 or the high-temperature heat collecting mechanism 2. Through such a setting, the control mechanism 6 can select the loop circulation pipeline 3 to be connected to different heat collecting mechanisms according to different radiation intensity conditions, and transport the heat of the heat collecting mechanism to the heat storage tank 4 through the loop circulation pipeline 3 for heat storage.

[0039] For example, if the solar radiation intensity is high, the efficiency of collecting radiation by the high-temperature heat collecting mechanism 2 is higher than that of the low-temperature heat collecting mechanism 1. Therefore, the loop circulation pipe 3 is connected to the high-temperature heat collecting mechanism 2. After the high-temperature heat collecting mechanism 2 absorbs the high-intensity solar radiation, the heat is transferred to the heat storage tank 4 for storage through the loop circulation pipe 3. Similarly, if the solar radiation intensity is low, the efficiency of collecting radiation by the low-temperature heat collecting mechanism 1 is higher than that of the high-temperature heat collecting mechanism 2. Therefore, the loop circulation pipe 3 is connected to the low-temperature heat collecting mechanism 1. After the low-temperature heat collecting mechanism 1 absorbs the solar radiation with lower intensity, the heat is transferred to the heat storage tank 4 for storage through the loop circulation pipe 3. The appropriate heat collecting mechanism can be selected according to different radiation intensities to avoid a decrease in heat collection efficiency.

[0040] For loop circulation pipe 3, please refer to Figure 1The loop circulation pipeline 3 is divided into multiple pipe sections. The first pipe section 30 is a pipe section connecting the liquid outlet ends of the low-temperature heat collecting mechanism 1 and the high-temperature heat collecting mechanism 2 and the heat storage tank 4. The second pipe section is a pipe section placed in the heat storage tank 4. The third pipe section 31 is a pipe section connecting the liquid outlet ends of the low-temperature heat collecting mechanism 1 and the high-temperature heat collecting mechanism 2 and the heat storage tank 4.

[0041] Among them, the first pipe section 30 is connected in parallel with the low-temperature heat collecting mechanism 1 and the high-temperature heat collecting mechanism 2 through the multi-way valve 5, and the third pipeline is also connected in parallel with the warm heat collecting mechanism and the high-temperature heat collecting mechanism 2 through the multi-way valve 5. The signal of the multi-way valve 5 is connected to the control mechanism 6. Under the control of the control mechanism 6, the multi-way valve 5 is used to selectively connect the loop circulation pipeline 3 to the low-temperature heat collecting mechanism 1 and the high-temperature heat collecting mechanism 2.

[0042] It should be noted that the multi-way valve 5 includes but is not limited to a three-way valve and valves with more than three ways, and those skilled in the art can select one according to their actual needs.

[0043] For the first pipe section 30, the first pipe section 30 is also connected to an exhaust valve 32 and a pipe section solenoid valve 33. The exhaust valve 32 is used to discharge air or gas in the pipeline to ensure the normal operation of the pipeline system, reduce pipeline pressure, reduce the risk of bursting, extend the life of the pipeline, and improve the operating efficiency of the pipeline system. The pipe section solenoid valve 33 is used to control whether the liquid after heat collection by the low-temperature heat collection mechanism 1 and the high-temperature heat collection mechanism 2 enters the second pipe section of the heat storage tank 4.

[0044] As for the second pipe section, the second pipe section is arranged in the heat storage tank 4 and performs heat exchange with the water in the heat storage tank 4. The water in the heat storage tank 4 is heated by heat exchange with the second pipe section, thereby converting the heat energy collected by the heat collection mechanism into the heat energy of water.

[0045] For the third pipe section 31, the second pipe section is also connected to a two-segment solenoid valve 34, a filter check valve 35, a working fluid circulation pump 36 and the inlet and outlet of the pipeline liquid. The two-segment solenoid valve 34 is used to control whether the liquid in the second pipe section passes from the heat storage tank 4 to the low-temperature heat collection mechanism 1 and the high-temperature heat collection mechanism 2. The filter check valve 35 is used to filter the liquid in the return water circulation pipeline to prevent the backflow of the liquid, thereby protecting the pipeline and the pump. The working fluid circulation pump 36 is used to transport the liquid in the return water circulation pipeline to the low-temperature heat collection mechanism 1 or the high-temperature heat collection mechanism 2. The inlet and outlet of the pipeline liquid are both provided with inlet and outlet solenoid valves 38 to control the replacement of the liquid.

[0046] Furthermore, in order to improve the heat transfer efficiency, the liquid in the loop circulation pipe 3 is heat transfer oil, and the loop circulation pipe 3 is made of heat-insulating material. Through such a setting, since the heat transfer oil has the advantages of resistance to thermal cracking and chemical oxidation, good heat transfer efficiency, fast heat dissipation and thermal stability, the heat transfer oil can effectively provide heat transfer efficiency.

[0047] During application, the loop circulation pipe 3 transfers the liquid collected in the heat collection mechanism to the heat storage tank 4, and exchanges heat with the water in the heat storage tank 4. The exchanged liquid is then transferred back to the heat collection mechanism through the loop circulation pipe 3 to reabsorb solar energy, thereby realizing the circulation of the liquid and transferring heat energy.

[0048] For low temperature heat collection mechanism 1, please refer to Figure 1 The low-temperature heat collection mechanism 1 includes three low-temperature heat collectors 10, and the liquid outlet ends and liquid inlet ends of the three low-temperature heat collectors 10 are connected in parallel with a multi-way valve 5. A first solenoid valve 11 is provided between the three low-temperature heat collectors 10 and the two multi-way valves 5, that is, both ends of the low-temperature heat collector 10 are connected to the two multi-way valves 5 with a first solenoid valve 11. The first solenoid valve 11 is used to control each low-temperature heat collector 10 whether to pass the liquid in the low-temperature heat collector 10 out. Through such an arrangement, because the low-temperature heat collector 10 has a higher heat collection efficiency in the low-temperature stage or low-intensity solar radiation, when the temperature is low or the solar radiation is weak, the low-temperature heat collection mechanism 1 is controlled to be connected to the loop circulation pipeline 3 to achieve efficient heat collection at lower temperatures or lower solar radiation.

[0049] Among them, the low-temperature collector 10 includes a first heat collecting tube and a flat-plate heat collector; the first heat collecting tube is connected to the loop circulation pipe 3 through a multi-way valve 5, the first heat collecting tube is arranged in the flat-plate heat collector, and an insulation layer is also provided in the flat-plate heat collector. The first heat collecting tube is in contact with the surface of the flat-plate heat collector, and the flat-plate heat collector is used to absorb solar energy and exchange heat with the first heat collecting tube. Through such an arrangement, solar energy is converted into thermal energy, and the heat energy absorbed by the flat-plate heat collector is transferred to the liquid in the first heat collecting tube, and is passed to the heat storage tank 4 through the loop circulation pipe 3, thereby generating hot water or steam for heating or supplying hot water.

[0050] It should be noted that the above describes the basic structure of the low-temperature collector 10. Specific options for the low-temperature collector 10 include, but are not limited to, flat-plate solar collectors. Any type of low-temperature collector 10 that meets the basic structure of the low-temperature collector 10 described above can be selected.

[0051] It should be noted that the number of low-temperature collectors 10 in this embodiment is the preferred number, and other numbers of low-temperature collectors 10 can also be used. Those skilled in the art can make a choice based on their actual needs.

[0052] During application, when the solar radiation or temperature is low, the multi-way valve 5 is controlled to open the valve adjacent to the low-temperature heat collection mechanism 1 and the loop circulation pipeline 3, multiple first solenoid valves 11 are opened, the first pipe section solenoid valve 33 is opened and the second pipe section solenoid valve 34 is opened, so that the low-temperature heat collection mechanism 1 is connected to the loop circulation pipeline 3, and the exhaust valve 32, the filter check valve 35 and the working fluid circulation pump 36 are started to realize liquid circulation to provide heat for the heat storage tank 4.

[0053] For high temperature heat collecting mechanism 2, please refer to Figure 1 The high-temperature heat collecting mechanism 2 includes three high-temperature heat collectors 20. The liquid outlet ends and liquid inlet ends of the three high-temperature heat collectors 20 are connected in parallel with a multi-way valve 5. A second solenoid valve 21 is provided between the three high-temperature heat collectors 20 and the two multi-way valves 5, that is, both ends of the high-temperature heat collector 20 are connected to the two multi-way valves 5 with a second solenoid valve 21. The second solenoid valve 21 is used to control each high-temperature heat collector 20 whether to pass the liquid in the high-temperature heat collector 20. Through such an arrangement, because the high-temperature heat collector 20 has a higher heat collection efficiency in the high-temperature stage or high-intensity solar radiation, when the temperature is high or the solar radiation is high, the high-temperature heat collecting mechanism 2 is controlled to be connected with the loop circulation pipeline 3 to achieve efficient heat collection at high temperature or high solar radiation.

[0054] Among them, the high-temperature collector 20 includes a second heat collecting tube and a vacuum tube heat collector; the second heat collecting tube is connected to the loop circulation pipe 3 through a multi-way valve 5, the second heat collecting tube is in contact with the surface of the vacuum tube heat collector, and the vacuum tube heat collector is used to absorb solar energy and exchange heat with the second heat collecting tube. Through such an arrangement, solar energy is converted into thermal energy, and the heat energy absorbed by the vacuum tube heat collector is transferred to the liquid in the second heat collecting tube, and is passed to the heat storage tank 4 through the loop circulation pipe 3, thereby generating hot water or steam for heating or supplying hot water.

[0055] It should be noted that the above describes the basic structure of the high-temperature collector 20. Specific options for the high-temperature collector 20 include, but are not limited to, vacuum tube solar collectors. Any high-temperature collector 20 that meets the basic structure described above can be selected.

[0056] It should be noted that the number of high-temperature collectors 20 in this embodiment is the preferred number, and other numbers of high-temperature collectors 20 can also be used. Those skilled in the art can make a choice based on their actual needs.

[0057] During application, when under high solar radiation or high temperature, the high-temperature heat collection mechanism 2 is controlled to be connected with the loop circulation pipeline 3, multiple second solenoid valves 21 are opened, the first pipe section solenoid valve 33 is opened and the second pipe section solenoid valve 34 is opened, so that the low-temperature heat collection mechanism 1 is connected with the loop circulation pipeline 3, and the exhaust valve 32, the filter check valve 35 and the working fluid circulation pump 36 are started to realize liquid circulation to provide heat for the heat storage tank 4.

[0058] For the heat storage tank 4, please refer to Figure 1The heat storage tank 4 can be connected to a water inlet pipe 40 and a water outlet pipe 41. The water inlet pipe 40 is also connected to the return water circulation pipe. A cleaning solenoid valve 37 is connected between the water inlet pipe 40 and the return water circulation pipe. The outside of the water inlet pipe 40 can be connected to an automatic water replenishing device 42. The hot water in the heat storage tank 4 is passed to the required use through the water outlet pipe 41, and then the water volume is replenished through the automatic water replenishing device 42.

[0059] For control mechanism 6, please refer to Figure 1 The control mechanism 6 includes a detection module and a control module; the detection module is used to detect the solar radiation intensity or temperature and output the measured value signal to the control module; the control module is used to compare the measured value with the preset value, and according to the comparison result, the control loop circulation pipeline 3 is connected to the low-temperature heat collection mechanism 1 or the high-temperature heat collection mechanism 2.

[0060] Among them, if the measured value is lower than the preset value, the control signal is output to the multi-way valve 5, and the control loop circulation pipeline 3 is connected to the low-temperature heat collection mechanism 1; if the measured value is higher than the preset value, the control signal is output to the multi-way valve 5, and the control loop circulation pipeline 3 is connected to the high-temperature heat collection mechanism 2.

[0061] It should be noted that the detection of the detection module can be achieved through a temperature sensor or a sensor that can detect the intensity of solar radiation, and the control module can be achieved through a PLC intelligent control module. Those skilled in the art can make a choice according to their actual needs.

[0062] During application, when the detection module detects that the solar radiation intensity or temperature in the current environment is lower than the preset value, the control module will control the two multi-way valves 5 to open the valves at one end of the low-temperature heat collection mechanism 1 and the valves at one end of the return water circulation pipe, so that the low-temperature heat collection mechanism 1 is connected to the return water circulation pipe, thereby achieving effective heat collection under low temperature or low solar radiation intensity; when the detection module detects that the solar radiation intensity or temperature in the current environment is higher than the preset value, the control module will control the two multi-way valves 5 to open the valves at one end of the high-temperature heat collection mechanism 2 and the valves at one end of the return water circulation pipe, thereby connecting the high-temperature heat collection mechanism 2 to the return water circulation pipe, thereby achieving effective heat collection under high temperature or high solar radiation intensity.

[0063] The above describes the basic structure and principle of this solution, and the following will explain it in combination with the specific application of this solution.

[0064] Please refer to Figure 1 and Figure 2 The space energy composite energy utilization system of this scheme can be directly applied to buildings, that is, the low-temperature heat collection mechanism 1, the high-temperature heat collection mechanism 2, and the loop circulation pipe 3 are laid on the surface of the building roof, and then the loop circulation pipe 3 and the heat storage tank 4 are heat exchanged, and the heat storage tank 4 passes the hot water to the indoor domestic hot water system 7.

[0065] When the radiation intensity is strong during the day, all high-temperature collectors 20 in the high-temperature collector mechanism 2 are controlled to be connected to the return water circulation pipeline. Of course, the user can control an appropriate number of low-temperature collectors 10 to be connected to the return water circulation pipeline to convert solar energy into heat energy in the heat storage tank 4, which can then be passed to any indoor system that requires hot water.

[0066] When the radiation intensity is weak during the day, all the low-temperature collectors 10 in the low-temperature heat collection mechanism 1 are controlled to be connected to the return water circulation pipeline. Of course, the user can control an appropriate number of low-temperature collectors 10 to be connected to the return water circulation pipeline to convert solar energy into heat energy in the heat storage tank 4, which can then be passed to any indoor system that requires hot water.

[0067] This solution effectively improves the heat collection efficiency by setting collectors with different heat collection efficiencies to absorb solar radiation of different intensities, realizes efficient, reasonable and comprehensive distribution of heat sources, effectively improves energy efficiency, and achieves the goal of energy conservation and emission reduction.

[0068] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A space energy composite energy utilization system, characterized in that: It includes a low-temperature heat collection mechanism, a high-temperature heat collection mechanism, a loop circulation pipeline and a heat storage tank; The loop circulation pipeline is connected in parallel to the low-temperature heat collection mechanism and the high-temperature heat collection mechanism, and the loop circulation pipeline is connected to the heat storage tank; The low-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is lower than a preset value, and the high-temperature heat collecting mechanism is used to absorb solar energy when the solar radiation intensity is higher than a preset value; The heat storage tank is used to store the heat input by the loop circulation pipeline; When the temperature is lower than a preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the low-temperature heat collection mechanism; When the temperature is higher than a preset value, the space energy composite energy utilization system is used to connect the loop circulation pipeline with the high-temperature heat collection mechanism.

2. A space energy composite energy utilization system according to claim 1, characterized in that: The low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism are connected in parallel with the loop circulation pipeline through a multi-way valve, and the multi-way valve is used to selectively connect the loop circulation pipeline to the low-temperature heat collecting mechanism and the high-temperature heat collecting mechanism.

3. A space energy composite energy utilization system according to claim 2, characterized in that: The low-temperature heat collection mechanism includes a plurality of low-temperature heat collectors, and the plurality of low-temperature heat collectors are all connected in parallel to the multi-way valve.

4. A space energy composite energy utilization system according to claim 3, characterized in that: A first solenoid valve is connected between each of the plurality of low-temperature heat collectors and the multi-way valve, and the first solenoid valve is used to control the operation of different low-temperature heat collectors.

5. The space energy composite energy utilization system according to claim 3, characterized in that: The low-temperature heat collector includes a first heat collecting tube and a flat plate heat collector; The first heat collecting pipe is connected to the loop circulation pipe through the multi-way valve. The first heat collecting pipe is arranged in the flat plate heat collector. The first heat collecting pipe abuts against the surface of the flat plate heat collector. The flat plate heat collector is used to absorb solar energy and exchange heat with the first heat collecting pipe.

6. The space energy composite energy utilization system according to claim 2, characterized in that: The high-temperature heat collecting mechanism includes a plurality of high-temperature heat collectors, and the plurality of high-temperature heat collectors are all connected in parallel to the multi-way valve.

7. A space energy composite energy utilization system according to claim 6, characterized in that: A second solenoid valve is connected between each of the plurality of high-temperature heat collectors and the multi-way valve, and the second solenoid valve is used to control the operation of different high-temperature heat collectors.

8. The space energy composite energy utilization system according to claim 6, characterized in that: The high temperature heat collector comprises a second heat collecting tube and a vacuum tube heat collector; The second heat collecting pipe is connected to the loop circulation pipe through the multi-way valve. The second heat collecting pipe abuts against the surface of the vacuum tube heat collector. The vacuum tube heat collector is used to absorb solar energy and exchange heat with the second heat collecting pipe.

9. A space energy composite energy utilization system according to claim 1, It also includes control agencies; The control mechanism includes a detection module and a control module; The detection module is used to detect the solar radiation intensity and output the measured value signal to the control module; The control module is used to compare the measured value with a preset value, and according to the comparison result, control the loop circulation pipeline to be connected to the low-temperature heat collection mechanism or the high-temperature heat collection mechanism.

10. The space energy composite energy utilization system according to claim 1, characterized in that: The liquid in the loop circulation pipeline is heat transfer oil.

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