Solar heat collection module with built-in node heat exchanger

Abstract

The utility model discloses a solar heat collection module with a built-in node heat exchanger. The solar heat collection module comprises a solar heat collector, an open type water tank with a node heat exchange tube penetrating inside and a triangular support. The solar heat collector is fixedly mounted on the inclined surface of the triangular bracket; the inner corrugated heat exchange tube penetrating open type water tank is fixedly mounted at the top end of the triangular bracket; the solar heat collector is a glass evacuated collector tube heat collector or a solar flat plate type heat collector. According to the utility model, the corrugated tube is used as a heat exchanger, can be used on different open water tanks, and can be suitable for solar flat plate type products and vacuum tube solar products. The water tank is an open type water tank, the large-diameter corrugated heat exchange pipe penetrates through the inside of the water tank to serve as a tubular heat exchanger, and compared with a conventional drift-diameter pipeline, the water tank has the advantages of being large in heat exchange area, high in strength, high in compression resistance, large in contact area between internal water flow and the inner wall of the pipe, better and faster in heat exchange effect, and particularly suitable for large-scale series connection use through double large-diameter connectors.

Description

Technical Field

[0001] This utility model belongs to the field of solar collectors, specifically relating to a solar collector module with a built-in corrugated heat exchanger. Background Technology

[0002] With the rapid development of modern society and economy, human demand for energy is increasing. However, the reserves of traditional energy sources such as coal, oil, and natural gas are constantly decreasing and becoming increasingly scarce, leading to continuous price increases. At the same time, the environmental pollution caused by conventional fossil fuels is becoming increasingly serious, all of which greatly restrict social development and the improvement of human quality of life. Energy issues have become one of the most prominent problems in the contemporary world. Therefore, the search for new energy sources, especially pollution-free clean energy, has become a hot research topic. Solar energy is an inexhaustible clean energy source with huge resources. The utilization of solar energy mainly includes three forms: photothermal conversion, photovoltaic conversion, and photochemical conversion. Compared with the high cost and low energy conversion efficiency of solar photovoltaic industry and photochemical conversion, solar thermal conversion is a solar energy utilization method with high energy conversion efficiency and utilization rate, low cost, and can be widely promoted throughout society. In solar thermal utilization devices, the key is to convert solar radiation energy into heat energy; the device that realizes this conversion is called a solar collector.

[0003] Regardless of its form or structure, a solar collector must have an absorbing component to absorb solar radiation. The thermal radiation performance of the absorbing surface of this component plays a crucial role in the thermal performance of the collector. The physical quantities characterizing the thermal radiation performance of the absorbing surface are the absorptivity and the thermal emissivity. The former characterizes the ability to absorb solar radiation energy, while the latter characterizes the ability to emit radiation energy at its own temperature. A higher absorptivity and a lower emissivity indicate optimal heat absorption. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the shortcomings of the existing technology, this utility model provides a solar thermal collector module with a built-in corrugated heat exchanger.

[0005] Technical solution: A solar collector module with a built-in corrugated heat exchanger includes a solar collector, an open water tank with internal corrugated heat exchange tubes, and a triangular support. The solar collector is fixedly installed on the inclined surface of the triangular support. The open water tank with internal corrugated heat exchange tubes is fixedly installed at the top of the triangular support. The open water tank with corrugated heat exchange tubes is cylindrical. The solar collector is located on the central axis of the open water tank with internal corrugated heat exchange tubes.

[0006] The solar collector is either a collector with several parallel glass vacuum tubes or a flat-plate solar collector.

[0007] The open water tank with internal corrugated heat exchange tubes includes corrugated heat exchange tubes, an inner tank liner, an outer tank shell, a polyurethane insulation layer, a water tank circulation inlet, a water tank circulation outlet, fixing bolts, a corrugated heat exchange tube inlet, a corrugated heat exchange tube outlet, a water tank water supply interface, and an exhaust port.

[0008] A polyurethane insulation layer is provided between the inner tank and the outer shell of the open water tank with internal corrugated heat exchange tubes. The inner tank is provided with a water tank circulation inlet and a water tank circulation outlet, and water can enter and exit the open water tank with internal corrugated heat exchange tubes through the water tank circulation inlet and the water tank circulation outlet.

[0009] The water tank shell is provided with two corrugated heat exchange tube inlets and two corrugated heat exchange tube outlets at both ends. The two ends of the corrugated heat exchange tubes pass through the corrugated heat exchange tube inlets and corrugated heat exchange tube outlets respectively, and are fixedly installed on the open water tank with corrugated heat exchange tubes inside.

[0010] The outer shell of the water tank is also provided with two water tank inlet ports and two vent ports at its two ends. The water tank inlet ports are used to add water to the water tank, and the vent ports are used to discharge the gas in the water tank.

[0011] The solar collector modules with built-in corrugated heat exchangers can be connected in series by connecting joints to form an integral structure.

[0012] As an optimization: the slope of the inclined surface of the triangular support is 45°.

[0013] As an optimization, the size of the glass vacuum collector tube is 58*1800mm.

[0014] As an optimization: the open water tank with internal corrugated heat exchange tubes is fixed to the top of the triangular bracket by fixing bolts.

[0015] As an optimization: the polyurethane insulation layer is used to maintain the temperature of the water.

[0016] As an optimization: the two corrugated heat exchange tubes are symmetrically distributed on both sides of the central axis of the solar collector.

[0017] As an optimization: the corrugated heat exchange tube is made of 304 stainless steel, 316 stainless steel or copper tube, and is formed by mechanical drawing corrugated tube processing technology.

[0018] As an optimization: the connection of the corrugated heat exchange tube is made by argon arc welding or laser welding. After the connection is welded, it can be pressurized to 1.6 MPa water pressure and held for 5 minutes without leakage.

[0019] Beneficial Effects: This invention uses corrugated tubes as heat exchangers, applicable to various open-type water tanks, including flat-plate solar panels and vacuum tube solar panels. The water tank in this invention is an open-type tank with large-diameter corrugated heat exchange tubes running through it, functioning as a tubular heat exchanger. This provides a larger heat exchange area than conventional pipes, higher strength, stronger pressure resistance, and a larger contact area between the internal water flow and the inner wall of the tube, resulting in better and faster heat exchange. The dual large-diameter interfaces are particularly suitable for large-scale series applications. Furthermore, this invention overcomes the problems of ordinary corrugated coil heat exchangers, which are prone to lateral movement within the water tank, causing damage, and leaks due to metal fatigue leading to rupture. Attached Figure Description

[0020] Figure 1 This is a front view structural schematic diagram of the glass vacuum tube collector in this utility model;

[0021] Figure 2 This is a front view structural diagram of the solar flat-plate collector in this utility model;

[0022] Figure 3 This is a side view of the solar collector module with a built-in corrugated heat exchanger, according to this utility model.

[0023] Figure 4 This is a schematic diagram of the open water tank structure with internal corrugated heat exchange tube in this utility model;

[0024] Figure 5 This is a schematic diagram of the glass vacuum tube collector in the series connection of the solar collector module with built-in corrugated heat exchanger of this utility model.

[0025] Figure 6 This is a schematic diagram of the structure of the solar flat plate collector in the series connection of the solar collector module with built-in corrugated heat exchanger of this utility model. Detailed Implementation

[0026] Example

[0027] like Figure 1-3 As shown, a solar collector module with a built-in corrugated heat exchanger includes a solar collector 1, an open water tank 2 with internal corrugated heat exchange tubes, and a triangular support 3. The solar collector 1 is fixedly mounted on the inclined surface of the triangular support 3. The slope of the inclined surface of the triangular support 3 is 45°. The open water tank 2 with internal corrugated heat exchange tubes is fixedly mounted on the top of the triangular support 3. The open water tank 2 with corrugated heat exchange tubes is cylindrical. The solar collector 1 is located on the central axis of the open water tank 2 with internal corrugated heat exchange tubes.

[0028] The solar collector 1 is either a collector 11 with several parallel glass vacuum collector tubes arranged in parallel or a flat-plate solar collector 12. The glass vacuum collector tubes 111 have dimensions of 58*1800mm.

[0029] like Figure 4 As shown, the open water tank 2 with internal corrugated heat exchange tubes includes corrugated heat exchange tubes 21, water tank inner liner 22, water tank outer shell 23, polyurethane insulation layer 24, water tank circulation inlet 25, water tank circulation outlet 26, fixing bolts 27, corrugated heat exchange tube inlet 28, corrugated heat exchange tube outlet 29, water tank water supply interface 210, and vent 211.

[0030] The open-type water tank 2 with internal corrugated heat exchange tubes is fixed to the top of the triangular bracket 3 by fixing bolts 27. A polyurethane insulation layer 24 is provided between the inner tank liner 22 and the outer tank shell 23 of the open-type water tank 2 with internal corrugated heat exchange tubes, and the polyurethane insulation layer 24 is used to maintain the water temperature. The inner tank liner 22 is provided with a water tank circulation inlet 25 and a water tank circulation outlet 26, and water can flow in and out of the open-type water tank 2 with internal corrugated heat exchange tubes through the water tank circulation inlet 25 and the water tank circulation outlet 26.

[0031] The outer shell 23 of the water tank is provided with two corrugated heat exchange tube inlets 28 and two corrugated heat exchange tube outlets 29 at its two ends. The two ends of the corrugated heat exchange tubes 21 pass through the corrugated heat exchange tube inlets 28 and the corrugated heat exchange tube outlets 29, respectively, and are then fixedly installed on the open water tank 2 with the corrugated heat exchange tubes inside. The two corrugated heat exchange tubes 21 are symmetrically distributed on both sides of the central axis of the solar collector 1. The corrugated heat exchange tubes 21 are made of 304 stainless steel, 316 stainless steel, or copper tubes, and are formed using a mechanical drawing corrugated tube processing technology. The joints of the corrugated heat exchange tubes 21 are welded using argon arc welding or laser welding. After welding, the joints can be pressurized to 1.6 MPa and held for 5 minutes without leakage.

[0032] The outer shell 23 of the water tank is provided with two water tank inlet ports 210 and two vent ports 211 at its two ends. The water tank inlet ports 210 are used to add water to the water tank, and the vent ports 211 are used to discharge the gas in the water tank.

[0033] like Figure 5-6 As shown, the solar collector modules with built-in corrugated heat exchangers can be connected in series by connecting the corrugated heat exchange tubes 21 through the docking joint 4 to form an integral structure.

[0034] This invention uses a corrugated tube as a heat exchanger, which can be used in different open water tanks. It is applicable to flat-plate solar products and also suitable for vacuum tube solar products.

[0035] The water tank of this utility model is an open water tank, with a large-diameter corrugated heat exchange tube running through it to be used as a tubular heat exchanger. It has a larger heat exchange area than conventional pipes, higher strength, stronger pressure resistance, and a larger contact area between the internal water flow and the inner wall of the pipe, resulting in better and faster heat exchange. The double large-diameter interface is particularly suitable for large-scale series use.

[0036] Because the corrugated heat exchange tube has a thicker wall than ordinary corrugated tubes (which can only be made thickest at 0.4 mm due to processing limitations), it has high overall support strength and good pressure resistance. This feature completely overcomes the problems of ordinary corrugated coil heat exchangers, such as easy left and right movement inside the water tank, causing damage to the inside of the water tank, and water leakage caused by metal fatigue leading to self-rupture.

[0037] The use of corrugated heat exchange tubes in this invention greatly increases the heat transfer area (compared to ordinary flat tubes, the surface area of ​​corrugated tubes is increased by about 1.3 times due to the corrugating process). Furthermore, due to the height difference between the crests and troughs inside the corrugated tube, the inner wall of the corrugated tube has a turbulent effect on the water flow, which changes the flow velocity and direction of the water inside the tube, increases the friction coefficient between the water and the tube wall, and directly improves the heat exchange efficiency.

[0038] The foregoing description clearly and completely illustrates the technical solutions in the embodiments of this utility model, enabling those skilled in the art to better understand the advantages and features of this utility model, thereby providing a clearer definition of the scope of protection of this utility model. The embodiments described in this utility model are merely some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

Claims

1. A solar thermal module incorporating a wave node heat exchanger, characterized by: The utility model relates to a solar energy heat collecting module with built-in wave node heat exchanger, which comprises a solar energy heat collector (1), an open water tank with wave node heat exchange pipes (2) and a triangular support (3). The solar energy heat collector (1) is fixedly installed on the inclined surface of the triangular support (3), and the open wave node heat exchange pipe water tank (2) is fixedly installed at the top end of the triangular support (3). The solar energy heat collector (1) is located on the central axis of the open wave node heat exchange pipe water tank (2). The solar energy heat collector (1) is provided with a plurality of glass vacuum heat collecting tube heat collectors (11) arranged in parallel or a solar energy flat plate type heat collector (12). The open wave node heat exchange pipe water tank (2) comprises wave node heat exchange pipes (21), a water tank inner container (22), a water tank outer shell (23), a polyurethane heat preservation layer (24), a water tank circulating water inlet (25), a water tank circulating water outlet (26), fixing bolts (27), wave node heat exchange pipe inlets (28), wave node heat exchange pipe outlets (29), water tank water supplement interfaces (210) and exhaust ports (211). The water tank inner container (22) and the water tank outer shell (23) of the open wave node heat exchange pipe water tank (2) are provided with the polyurethane heat preservation layer (24) therebetween. The water tank outer shell (23) is provided with two wave node heat exchange pipe inlets (28) and two wave node heat exchange pipe outlets (29) at two ends thereof respectively, the two ends of the wave node heat exchange pipes (21) pass through the wave node heat exchange pipe inlets (28) and the wave node heat exchange pipe outlets (29) respectively, and are fixedly installed on the open wave node heat exchange pipe water tank (2).

2. The internal-nodal heat exchanger solar thermal module of claim 1, wherein: The water tank outer shell (23) is further provided with two water tank water supplement interfaces (210) and two exhaust ports (211) at two ends thereof respectively, the water tank water supplement interfaces (210) are used for supplementing water in the water tank, and the exhaust ports (211) are used for exhausting gas in the water tank.

3. The internal-nodal heat exchanger solar thermal module of claim 1, wherein: The wave node heat exchange pipes (21) can be connected in series between the solar energy heat collecting modules with built-in wave node heat exchangers through butt joints (4) to form an integral structure.

4. The internal-nodal heat exchanger solar thermal module of claim 1, wherein: The slope of the inclined surface of the triangular support (3) is 45°.

5. The internal-nodal heat exchanger solar energy collection module of claim 1, wherein: The open wave node heat exchange pipe water tank (2) is fixedly installed at the top end of the triangular support (3) through the fixing bolts (27).

6. The internal-nodal heat exchanger solar energy collection module of claim 1, wherein: The polyurethane heat preservation layer (24) is used for keeping the temperature of water.

7. The internal-nodal heat exchanger solar thermal module of claim 1, wherein: The two wave node heat exchange pipes (21) are symmetrically distributed on both sides of the central axis of the solar energy heat collector (1). The wave node heat exchange pipes (21) are made of 304 stainless steel, 316 stainless steel or red copper pipes and are processed by a mechanical drawing wave node pipe processing technology. The connection part of the wave node heat exchange pipes (21) is welded by an argon arc welding or laser welding process, and the welded connection part can be pressed by 1.6 MPA water pressure for 5 minutes without leakage.

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