Heating system based on photo-thermal

Abstract

The invention discloses a heating system based on photo-thermal, and belongs to the technical field of heating equipment.The heating system based on photo-thermal comprises a heat exchange assembly, and the heat exchange assembly comprises a heat collection component, a heat exchange component, a heat exchange interval and a heat exchange pipe body arranged in the heat exchange interval; the heat collection part, the first heat storage box, the heat exchange pipe body and the second heat storage box are sequentially connected through a first pipeline; a first water tank and a second water tank; and a heating assembly. A heating system composed of a heat exchange assembly and a heating assembly is arranged, based on the heat exchange assembly, solar energy is collected through a heat collection component to achieve heating of heat conduction fluid, and meanwhile the heat collection component, the heat exchange component, a first heat storage box and a second heat storage box are matched with a pipeline to form a closed loop where the heat conduction fluid flows; the heated heat conduction fluid can exchange heat with low-temperature water in the heat exchange component and then flow into the heat collection component again to be heated, and cyclic utilization of the heat conduction fluid is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of heating equipment, and particularly relates to a solar thermal-based heating system. Background Art

[0002] In rural areas, there is a lack of natural gas supply. Rural residents in the north mainly rely on heated kang or burning crop straw in stoves for winter heating. The rural heated kang mainly warms by arranging flues under the kang surface and using the combustion flue gas of straw or coal to heat the kang.

[0003] There are few ways to use solar thermal energy for heating in rural areas. It mainly relies on solar water heaters. However, the boiling point of water at 100°C limits the utilization of solar thermal energy. At the same time, in order to reduce the steam pressure in the container, a pressure relief valve is set in the conventional solar water heater storage tank, and the discharged steam causes waste of thermal energy. Summary of the Invention

[0004] The purpose of the present invention is to provide a solar thermal-based heating system to solve the problems in the existing heating system during use as mentioned in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A solar thermal-based heating system, comprising:

[0006] A heat exchange assembly, the heat exchange assembly comprising:

[0007] A heat collection member, having a heat collection part, wherein a heat transfer fluid is stored in the heat collection part, and is configured to convert solar energy into heat energy to raise the temperature of the heat transfer fluid;

[0008] A heat exchange member, including a heat exchange section and heat exchange tubes disposed in the heat exchange section;

[0009] A first heat storage tank and a second heat storage tank, the heat collection part, the first heat storage tank, the heat exchange tubes and the second heat storage tank are sequentially connected through a first pipeline, and the second heat storage tank and the heat collection part are connected through a second pipeline. The first pipeline and the second pipeline together form a closed loop for the flow of the heat transfer fluid;

[0010] The heating system further comprises:

[0011] A first water tank and a second water tank, both fluidly connected to the heat exchange section. The water stored in the second water tank flows into the heat exchange section to exchange heat with the heat transfer fluid and then flows into the first water tank after the temperature is raised;

[0012] A heating assembly, and is configured to supply the water in the first water tank to an external heating device.

[0013] Preferably, the first heat storage tank is disposed within the first water tank, the second heat storage tank is disposed within the second water tank, and both the first water tank and the second water tank are disposed within the kang body.

[0014] Preferably, heat insulating materials are coated on the outer walls of both the first heat storage tank and the second heat storage tank.

[0015] Preferably, the first pipeline includes:

[0016] A first section, which constitutes the connecting pipeline between the heat collection part and the first heat storage tank;

[0017] A second section, which constitutes the connecting pipeline between the first heat storage tank and the heat exchange tube body, and a first pump body is provided on the second section, and a second pump body is provided on the second pipeline;

[0018] A third section, which constitutes the connecting pipeline between the heat exchange tube body and the second heat storage tank, and a check valve is provided on the third section.

[0019] Preferably, the first water tank and the heat exchange area are connected through a first water pipeline, and a check valve is provided on the first water pipeline. The second water tank and the heat exchange area are connected through a second water pipeline, and a third pump body is provided on the second water pipeline.

[0020] Preferably, the heating assembly includes:

[0021] A hot water storage tank;

[0022] A heating pipeline, including a main pipeline and at least one branch pipeline. A single branch pipeline includes an inflow section and an outflow section connected to a heating device. After the water stored in the first water tank is supplied to the heating device via the main pipeline and the inflow section of the branch pipeline, it flows into the hot water storage tank through the outflow section of the branch pipeline.

[0023] Preferably, a filter is provided on the outflow section.

[0024] Preferably, flow control valves are provided on the main pipeline and at least part of the branch pipelines, and a fourth pump body is provided on the main pipeline.

[0025] Preferably, the heating pipeline has a first branch and a second branch, and a kang surface heating circulation pipeline and a radiator are respectively provided on the first branch and the second branch.

[0026] Preferably, a water heating kang board with an aluminum foil reflection function is laid below the kang surface heating hot water circulation pipeline.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] 1. The present application realizes the recycling of the heat-conducting fluid by setting up a heating system composed of a heat exchange component and a heating component. In the heat exchange component, solar energy is collected by a heat collection component to heat the heat-conducting fluid. At the same time, a closed loop for the flow of the heat-conducting fluid is formed by the cooperation of the heat collection component, the heat exchange component, the first heat storage tank, the second heat storage tank and the pipeline. The heated heat-conducting fluid can exchange heat with low-temperature water in the heat exchange component and then flow back into the heat collection component for heating again.

[0029] 2. By arranging the first heat storage tank and the second heat storage tank in the first water tank and the second water tank respectively, the heat dissipated in the second heat storage tank can increase the water temperature of the second water tank, which not only saves the setting of the low-temperature heat exchanger, but also reduces the heat exchange temperature difference between the normal-temperature water and the high-temperature heat-conducting oil in the heat exchange component, thus improving the heat exchange efficiency.

[0030] 3. The present invention uses trough-type heat collection and heat-conducting oil heat storage, and the temperature upper limit is higher than that of solar water heaters. Moreover, the heat-conducting oil heat storage container and the hot water heat storage system are both located indoors, and the heat dissipation occurs indoors, which can increase the indoor temperature. Compared with the conventional solar water heater with the heat storage tank located outdoors, the present invention avoids the freezing of pipelines in winter and the heat loss outdoors. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the overall structure of the heating system;

[0032] Figure 2 It is a schematic diagram of the structure of the heat exchange component;

[0033] Figure 3 It is a schematic diagram of the structure of the heating component.

[0034] In the figure:

[0035] 100, heat exchange component; 101, heat collection component; 101a, heat collection part; 102, heat exchange component; 102a, heat exchange area; 102b, heat exchange pipe body; 103, first heat storage tank; 104, second heat storage tank; 105, first water tank; 106, second water tank;

[0036] 200, first pipeline; 200a, first section; 200b, second section; 200c, third section; 201, first water body pipeline; 202, second water body pipeline; 203, second pipeline;

[0037] 300, first pump body; 301, second pump body; 302, third pump body; 303, fourth pump body; 304, first valve; 305, second valve; 306, third valve; 307, fourth valve;

[0038] 400, Heating component; 401, Hot water storage tank; 402, Main pipeline; 403, First branch; 403a, First inflow section; 403b, First outflow section; 404, Fourth branch; 404a, Second inflow section; 404b, Second outflow section; 405, Flow control valve; 406, Output pipeline

[0039] 500, Hot water circulation pipeline for heating the kang surface; 501, Radiator; 502, Water heating kang board

[0040] 600, Electric heating device. Detailed implementation manners

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0042] A solar thermal-based heating system (hereinafter referred to as the heating system) mainly consists of a heat exchange component 100 and a heating component 400. After being processed by the heat exchange component 100, low-temperature water becomes high-temperature water and is then output by the heating component 400 to heating equipment (such as radiators 501 and hot water circulation pipelines 500 for heating the kang surface) to achieve heating operations.

[0043] In some embodiments, refer to Figures 1 - 3, the main body of the above heat exchange assembly 100 includes a heat collection member 101, a first heat storage tank 103, a heat exchange member 102, and a second heat storage tank 104. The heat exchange member 102 has a heat exchange section 102a and a heat exchange pipe body 102b, and the heat exchange pipe body 102b is arranged in the heat exchange section 102a. When there is a temperature difference between the fluid in the heat exchange pipe body 102b and the fluid in the heat exchange section 102a, heat exchange can occur between the two. Correspondingly, the above heat collection member 101 has a heat collection part 101a, and this heat collection part 101a is configured to be able to absorb the heat of sunlight and increase in temperature, that is, this heat collection part 101a can convert solar energy into heat energy to raise the temperature of the heat-conducting fluid (such as heat-conducting oil) inside the heat collector. Exemplarily, the above heat collection member 102 is a trough-type solar thermal collector, and correspondingly, the heat collection part 101a is configured as its heat collection pipe. Further, the heat collection part 101a of the above heat collection member 101, the first heat storage tank 103, the heat exchange pipe body 102b of the heat exchange member 102, and the second heat storage tank 104 are sequentially connected through a first pipeline 200, and the second heat storage tank 104 is connected to the heat collection part 101a of the heat collection member 101 through a second pipeline 203, that is, the first pipeline 200 and the second pipeline together form a closed loop. At the same time, a pump body member and a valve body member are provided on the above closed loop, which are respectively used to control the flow of the heat-conducting fluid in the closed loop and the on-off of the closed loop. During the operation of the heating system, after the heat-conducting fluid is heated in the heat collection part 101a, it flows through the first pipeline 200 in sequence and passes through the first heat storage tank 103, the heat exchange pipe body 102b, and the second heat storage tank 104. After the high-temperature (such as 200°C - 400°C) heat-conducting fluid flows into the heat exchange pipe body 102b, it exchanges heat with the low-temperature (such as 20°C) water body in the heat exchange section 102a and then becomes a low-temperature heat-conducting fluid and flows into the second heat storage tank 104, and finally flows back into the heat collection part 101a through the second pipeline to be reheated.

[0044] Refer to Figure 2 , in some embodiments, the above first pipeline 200 has a first section 200a, a second section 200b, and a third section 200c. The first section 200a is configured as the connecting pipeline between the heat collection part 101a in the heat collection member 101 and the first heat storage tank 103, the second section 200b is configured as the connecting pipeline between the first heat storage tank 103 and the heat exchange pipeline, and the third section 200c is configured as the connecting pipeline between the heat exchange pipe body 102b and the second heat storage tank 104. In this example, pump body components (subsequently denoted as the first pump body 300 and the second pump body 301 respectively) are provided on the above second section 200b and the second pipeline 203, and valves (subsequently denoted as the first valve 304 and the second valve 305 respectively) are provided on both the second section 200b and the third section 200c. Preferably, the second valve 305 provided on the third section 200c is a check valve.

[0045] Refer to Figure 1 and2 The above heating system further includes a first water tank 105 and a second water tank 106. Both the first water tank 105 and the second water tank 106 are fluidly connected to the heat exchange section 102a of the heat exchange member 102. When the heating system operates, the low-temperature water (such as 20 °C) in the second water tank 106 flows into the heat exchange section 102a to exchange heat with the high-temperature heat-conducting fluid, and then the water is heated to a high temperature (for example, 60 - 80 °C) and flows into the first water tank 105 for selective supply to the subsequent heating assembly 400. In some examples, the above first water tank 105, second water tank 106, and heat exchange section 102a are all connected through water pipelines. Specifically, the first water tank 105 and the heat exchange section 102a are connected through a first water pipeline 201, and the second water tank 106 and the heat exchange section 102a are connected through a second water pipeline 202. At the same time, a third pump body 302 is provided on the second water pipeline 202, and valves (subsequently denoted as the third valve 306 and the fourth valve 307 respectively) are provided on both the first water pipeline 201 and the second water pipeline 202. Preferably, the fourth valve 307 provided on the second water pipeline 202 is a check valve.

[0046] In some embodiments, the above first heat storage tank 103 is disposed in the first water tank 105, and at the same time, the second heat storage tank 104 is disposed in the second water tank 106. At this time, the heat dissipated by the first heat storage tank 103 and the second heat storage tank 104 can be absorbed by the water bodies in the first water tank 105 and the second water tank 106 respectively to increase the water temperature and improve the overall heat utilization rate of the system. At the same time, the water tank isolates the heat storage tank from the external space, which can avoid the fire risk caused by the leakage of the heat-conducting fluid. In other embodiments, heat-insulating materials are coated on the outer walls of the first heat storage tank 103 and the second heat storage tank 104 to reduce the heat loss in the first heat storage tank 103 and the second heat storage tank 104 and improve the heat exchange efficiency. Further, the first water tank 105 and the second water tank 106 are respectively disposed on both sides of the heat exchange section 102a and are in contact with the heat exchange section 102a. Correspondingly, heat-insulating layers made of heat-insulating materials are provided on the outer sides of the first water tank 105 and the second water tank 106 to reduce the heat loss of the first water tank 105 and the second water tank 106. At the same time, the first water tank 105, the second water tank 106, and the heat exchange section 102a are disposed in the kang body, which can heat the kang body while reducing heat loss.

[0047] In some embodiments, an electric heating device 600 is further provided in the first water tank 105 to assist in increasing the water temperature in the first water tank 105 and ensure the normal use of the heating system on rainy days.

[0048] Refer to Figure 1 and 3, in some embodiments, the main body of the above-mentioned heating assembly 400 is composed of a hot water storage tank 401 and heating pipelines. The heating pipelines include a main pipeline 402 and at least one branch pipeline. A fourth pump body 303 is provided on the main pipeline 402. At the same time, the above-mentioned branch pipeline is configured as a connecting pipeline between the main pipeline 402 and the hot water storage tank 401, and the stop pipeline has an inflow section and an outflow section. The high-temperature hot water stored in the first water tank 105 flows through the main pipeline 402 and the inflow section of the branch pipeline and is then supplied to external heating equipment. After that, it enters the hot water storage tank 401 through the outflow section for storage to facilitate subsequent use, such as being supplied to domestic water equipment (such as water heaters and faucets) through pipelines. In some embodiments, the above-mentioned branch pipeline includes a first branch pipeline 403 and a second branch pipeline 404. The first branch pipeline 403 has a first inflow section 403a and a first outflow section 403b, and the second branch pipeline 404 has a second inflow section 404a and a second outflow section 404b. A kang surface heating circulation pipeline 500 is provided between the first inflow section 403a and the first outflow section 403b, and a radiator 501 is provided between the second inflow section 404a and the second outflow section 404b. A water heating kang board 502 with an aluminum foil reflection function is laid under the kang surface heating circulation pipeline 500. In this example, after the high-temperature water body stored in the first water tank 105 flows through the main pipeline 402, it enters the kang surface heating circulation pipeline 500 and the radiator 501 respectively through the first inflow section 403a and the second inflow section 404a to achieve kang surface heating and heating supply. Further, in this embodiment, filters are provided on both the first outflow section 403b and the second outflow section 404b to filter the water body flowing out of the heating equipment and reduce the impurity content of the water body in the hot water storage tank 401.

[0049] In some embodiments, a flow control valve 405 is provided on the above-mentioned main pipeline 402 and at least part of the branch pipelines. The supply amount of the high-temperature water body can be controlled through the flow control valve 405, and thus the heating temperature of the heating equipment can be controlled.

[0050] In some embodiments, the above-mentioned heating system further includes an output pipeline 406. One end of the output pipeline 406 extends into the interior of the hot water storage tank 401, and the other end of the output pipeline 406 is connected to domestic water equipment (such as water heaters and faucets) to achieve the supply of hot water for domestic water equipment.

[0051] Further, an electric heating device 600 and heat insulation materials are also provided in the above-mentioned hot water storage tank 401 to maintain the water temperature in the hot water storage tank 401 on rainy days.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A solar-thermal-based heating system, characterized in that: it includes: a heat exchange assembly, and the heat exchange assembly includes: a heat collection member having a heat collection portion in which a heat-conducting fluid is stored and configured to convert solar energy into heat energy to raise the temperature of the heat-conducting fluid; a heat exchange member including a heat exchange section and heat exchange tubes disposed within the heat exchange section; a first heat storage tank and a second heat storage tank, the heat collection portion, the first heat storage tank, the heat exchange tubes and the second heat storage tank are sequentially connected through a first pipeline, and the second heat storage tank and the heat collection portion are connected through a second pipeline, and the first pipeline and the second pipeline together form a closed loop for the flow of the heat-conducting fluid; the heating system further includes: a first water tank and a second water tank, both fluidly connected to the heat exchange section, and the water stored in the second water tank flows into the heat exchange section to exchange heat with the heat-conducting fluid and then flows into the first water tank after the temperature is raised; a heating assembly configured to supply the water in the first water tank to an external heating device.

2. The solar-thermal-based heating system according to claim 1, characterized in that: the first heat storage tank is disposed within the first water tank, the second heat storage tank is disposed within the second water tank, and both the first water tank and the second water tank are disposed within a kang body.

3. The solar-thermal-based heating system according to claim 2, characterized in that: heat insulation materials are coated on the outer walls of both the first heat storage tank and the second heat storage tank.

4. The solar-thermal-based heating system according to claim 1, characterized in that: the first pipeline includes: a first section configured as a connecting pipeline between the heat collection portion and the first heat storage tank; a second section configured as a connecting pipeline between the first heat storage tank and the heat exchange tubes, and a first pump is provided on the second section, and a second pump is provided on the second pipeline; a third section configured as a connecting pipeline between the heat exchange tubes and the second heat storage tank, and a check valve is provided on the third section.

5. The solar-thermal-based heating system according to claim 1, characterized in that: the first water tank and the heat exchange section are connected through a first water pipeline, and a check valve is provided on the first water pipeline, the second water tank and the heat exchange section are connected through a second water pipeline, and a third pump is provided on the second water pipeline.

6. The solar-thermal-based heating system according to claim 1, characterized in that: the heating assembly includes: a hot water storage tank; a heating pipeline including a main pipeline and at least one branch pipeline, and a single branch pipeline includes an inflow section and an outflow section connected to a heating device. After the water stored in the first water tank is supplied to the heating device via the main pipeline and the inflow section of the branch pipeline, it flows into the hot water storage tank through the outflow section of the branch pipeline.

7. The solar-thermal-based heating system according to claim 6, characterized in that: a filter is provided on the outflow section.

8. The solar-thermal-based heating system according to claim 6, characterized in that: flow control valves are provided on the main pipeline and at least a part of the branch pipelines, and a fourth pump is provided on the main pipeline.

9. The solar-thermal-based heating system according to claim 6, It is characterized in that: The heating pipeline has a first branch and a second branch, and a kang surface heating circulation pipeline and radiators are respectively arranged on the first branch and the second branch.

10. A solar thermal-based heating system according to claim 9, It is characterized in that: A water-heated kang board with an aluminum foil reflection function is laid under the kang surface heating hot water circulation pipeline.

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