Energy storage and heat exchange integrated water tank

Abstract

The utility model belongs to the energy storage technical field, concretely relates to a kind of energy storage heat exchange integrated water tank, including tank, it is used to deposit water body, fluid inlet and fluid outlet are respectively provided on tank;Energy storage unit, it is set in tank, and energy storage unit contains phase change medium;Pipe bundle unit, it is set in tank and is used to supply fluid to flow, and the both ends of pipe bundle unit are respectively communicated with fluid inlet and fluid outlet, and fluid exchanges heat with water body in tank when flowing through pipe bundle unit, causes phase change medium phase change.The utility model discloses energy storage heat exchange integrated water tank by fluid flowing through pipe bundle unit exchanges heat with water body in tank, temperature change of water body in tank, will cause phase change medium phase change, and then store energy, and energy storage is more.And by fluid and water body exchange heat, then cause phase change medium phase change, water body and energy storage unit contact fully, and heat exchange efficiency is high.

Description

Technical Field

[0001] This utility model belongs to the field of energy storage technology, specifically relating to an integrated energy storage and heat exchange water tank. Background Technology

[0002] Traditional energy storage tanks use water as the medium and store energy and exchange heat through temperature changes. However, this method has low energy storage and heat exchange efficiency.

[0003] Energy storage tanks that use phase change materials as the cold storage medium typically use a single pipe to directly input water into the tank. The flow rate is large and concentrated, and then it flows out quickly. This prevents the water from fully and evenly contacting the phase change material, resulting in uneven temperature inside the tank and requiring improvement in heat exchange efficiency. Summary of the Invention

[0004] In view of this, the present invention provides an integrated energy storage and heat exchange water tank with high heat exchange efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An integrated energy storage and heat exchange water tank, comprising: A container for storing water, wherein the container is provided with a fluid inlet and a fluid outlet; An energy storage unit is disposed within the enclosure, and the energy storage unit contains a phase change medium; A tube bundle unit is disposed within the box and used for fluid flow. The two ends of the tube bundle unit are respectively connected to the fluid inlet and the fluid outlet. When the fluid flows through the tube bundle unit, it exchanges heat with the water in the box, causing a phase change in the phase change medium.

[0006] Optionally, in the aforementioned integrated energy storage and heat exchange water tank, the water tank further includes a turbulence unit, which includes a plurality of turbulence pipes spaced apart in the tank body, a connecting pipe connecting the plurality of turbulence pipes, and a water pump installed on the connecting pipe. Each of the aforementioned baffle tubes has multiple through holes spaced apart along its length.

[0007] Optionally, the tube bundle unit extends along a first direction, and the baffle tube extends along a second direction, with the extension lines of the first direction and the extension lines of the second direction intersecting.

[0008] Optionally, the energy storage unit includes a plurality of energy storage tubes spaced apart in the housing and a phase change medium filled in each of the energy storage tubes. Each of the energy storage tubes extends along a third direction, and the extension lines in the first direction, the second direction, and the third direction intersect each other.

[0009] Optionally, the extension lines in the first direction, the second direction, and the third direction are perpendicular to each other.

[0010] Optionally, the connecting pipe is located outside the housing.

[0011] Optionally, multiple flow-disrupting units are provided; multiple tube bundle units are provided.

[0012] Optionally, the fluid inlet and fluid outlet are respectively located on opposite sides of the housing.

[0013] Optionally, the tube bundle unit includes a plurality of spaced fluid tubes, each of which is a corrugated tube.

[0014] Optionally, the phase change temperature of the phase change medium is 4~15℃ or 40~52℃; the fluid is water.

[0015] Optionally, a plurality of fluid inlets are provided on one side of the housing, and a plurality of fluid outlets are provided on the other side of the housing, with each fluid inlet and fluid outlet connected to the tube bundle unit.

[0016] Optionally, a first diversion mechanism is provided on the housing corresponding to the position of the fluid inlet, and a second diversion mechanism is provided on the housing corresponding to the position of the fluid outlet; Each of the tube bundle units includes a plurality of spaced-apart fluid tubes; The first diversion mechanism includes a first diversion plate disposed on the side wall of the housing and a first end cap that surrounds the first diversion plate to form a first receiving cavity. The fluid inlet is disposed on the first end cap. A first diversion hole is opened on the first diversion plate corresponding to the position of the fluid pipe. The first receiving cavity is connected to each of the fluid pipes through the first diversion hole. The second diversion mechanism includes a second diversion plate disposed on the side wall of the housing and a second end cap that surrounds the second diversion plate to form a second receiving cavity. The fluid outlet is disposed on the second end cap. A second diversion hole is opened on the second diversion plate corresponding to the position of the fluid pipe. The second receiving cavity is connected to each of the fluid pipes through the second diversion hole.

[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art: This utility model's integrated energy storage and heat exchange water tank exchanges heat with the water inside the tank as the fluid flows through the tube bundle unit. The temperature change of the water inside the tank causes a phase change in the phase change medium, thereby storing more energy. Furthermore, through heat exchange between the fluid and the water, and indirect heat exchange with the phase change medium, a phase change in the medium is induced, ensuring sufficient contact between the water and the energy storage unit, resulting in high heat exchange efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a front view of an integrated energy storage and heat exchange water tank according to an embodiment of the present invention; Figure 2 for Figure 1 Left view of the integrated energy storage and heat exchange water tank; Figure 3 for Figure 1 A top view of the integrated energy storage and heat exchange water tank; Figure 4 for Figure 3 Sectional view along line AA; Figure 5 for Figure 3 Sectional view along the BB direction; Figure 6 for Figure 3 C-axis sectional view; Figure 7 for Figure 1 Sectional view along the DD direction; Figure label: 1. Housing; 2. Fluid inlet; 3. Fluid outlet; 4. Baffle pipe; 5. Connecting pipe; 6. Through hole; 7. Energy storage pipe; 8. Fluid pipe; 9. First end cap; 10. Second end cap; 11. First receiving cavity; 12. Second receiving cavity; 13. Water pump; 14. First diverter plate; 15. Second diverter plate. Detailed Implementation

[0020] To enable those skilled in the art to better understand the technical solutions in the embodiments of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art should fall within the protection scope of this utility model.

[0021] See Figures 1-7 The energy storage and heat exchange integrated water tank shown includes a tank body 1, which is used to store water, and the tank body 1 is provided with a fluid inlet 2 and a fluid outlet 3.

[0022] The integrated energy storage and heat exchange water tank also includes an energy storage unit installed in the tank body 1 and a tube bundle unit installed in the tank body 1 for fluid flow. The energy storage unit contains a phase change medium. The two ends of the tube bundle unit are connected to the fluid inlet 2 and the fluid outlet 3, respectively. When the fluid flows through the tube bundle unit, it exchanges heat with the water in the tank body 1, causing the phase change medium to change phase.

[0023] Multiple fluid inlets 2 are provided on one side of the housing 1, and multiple fluid outlets 3 are provided on the other side of the housing 1. A tube bundle unit is connected between each fluid inlet 2 and fluid outlet 3.

[0024] In some embodiments, see Figure 1 and Figure 2 Multiple fluid inlets 2 are spaced apart and arrayed along one side of the housing 1. For example, fluid inlets 2 are spaced apart along the horizontal and vertical directions of the housing 1. The multiple fluid outlets 3 are arranged in the same way as the fluid inlets 2. Each fluid inlet 2 and fluid outlet 3 is connected to a tube bundle unit, so that tube bundle units are spaced apart along the horizontal and vertical directions of the housing 1. This allows the water in the housing 1 to exchange heat with the fluid flowing through the tube bundle unit, which helps to improve the uniformity of the water temperature in the housing 1.

[0025] See also 3 and Figure 5 Each tube bundle unit includes multiple spaced fluid tubes 8. Each fluid tube 8 is a corrugated tube, which has a larger heat transfer contact area with water and a stronger heat transfer capacity compared to a smooth straight tube.

[0026] As shown in the figure, a first diversion mechanism is provided on the housing 1 at the position corresponding to the fluid inlet 2, and a second diversion mechanism is provided on the housing 1 at the position corresponding to the fluid outlet 3. The first diversion mechanism includes a first diversion plate 14 provided on the side wall of the housing 1 and a first end cap 9 that surrounds the first diversion plate 14 to form a first receiving cavity 11. The fluid inlet 2 is provided on the first end cap 9. Multiple first diversion holes are opened on the first diversion plate 14 at the position corresponding to the fluid pipe 8. The first receiving cavity 11 is connected to each fluid pipe 8 through the first diversion holes. The second diversion mechanism includes a second diversion plate 15 provided on the side wall of the housing 1 and a second end cap 10 that surrounds the second diversion plate 15 to form a second receiving cavity 12. The fluid outlet 3 is provided on the second end cap 10. Multiple second diversion holes are opened on the second diversion plate 15 at the position corresponding to the fluid pipe 8. The second receiving cavity 12 is connected to each fluid pipe 8 through the second diversion holes. The fluid enters the first receiving cavity 11 through the fluid inlet 2, then flows into the fluid pipe 8 after being diverted through the first diversion hole, and then converges into the second receiving cavity 12, and then flows out through the fluid outlet 3. During the flow of the fluid in the fluid pipe 8, the fluid exchanges heat with the water in the box 1.

[0027] In some embodiments, the fluid may be water or other liquids.

[0028] In some embodiments, such as Figures 4-7 The energy storage unit includes multiple energy storage tubes 7 spaced apart in the housing 1 and a phase change medium filled in each energy storage tube 7. The phase change temperature of the phase change medium can be 8~15℃, and it can be an inorganic phase change material or an organic phase change material.

[0029] As by Figure 5 As can be seen, multiple energy storage tubes 7 are distributed sequentially at intervals on opposite sides of the tube bundle unit along the length of the tube bundle unit, so that the phase change medium in the energy storage tube 7 is in full contact with the water in the tank 1.

[0030] In some embodiments, to further increase the heat exchange efficiency of the water in the tank 1, the integrated energy storage and heat exchange water tank also includes multiple turbulence units. Each turbulence unit includes multiple turbulence pipes 4 spaced apart in the tank 1, a connecting pipe 5 connecting the multiple turbulence pipes 4, and a water pump 13 installed on the connecting pipe 5. Each turbulence pipe 4 has multiple through holes 6 spaced apart along its length, so that water in the tank 1 enters the turbulence pipe 4 from the through hole 6 on one side of the turbulence pipe 4 connected to the connecting pipe 5 and located on both sides of the water pump 13, and then is sprayed into the tank 1 through the through hole 6 on the turbulence pipe 4 on the other side, so that the water in the tank 1 is in a circulating state, further increasing the heat exchange efficiency and the uniformity of the water temperature.

[0031] See also Figure 7 Each tube bundle unit has a turbulence pipe that allows water to enter and a turbulence pipe that allows water to spray out, respectively, on opposite sides.

[0032] See Figure 5 and Figure 7 The tube bundle unit extends along the first direction (i.e., each fluid tube 8 also extends along the first direction), each turbulence tube 4 extends along the second direction, and each energy storage tube 7 extends along the third direction. The extension lines of the first direction, the second direction, and the third direction intersect each other.

[0033] In some embodiments, the extension lines in the first direction, the second direction, and the third direction are perpendicular to each other, which is beneficial for the arrangement of the pipes and for achieving better heat transfer efficiency. See also Figure 7 The first and second directions are both horizontal and perpendicular to each other, while the third direction is vertical.

[0034] In some embodiments, when the integrated energy storage and heat exchange water tank is specifically applied, it can be used for cooling energy storage. It can use a phase change medium with a phase change temperature of 4 to 15°C, such as a phase change medium with a phase change temperature of about 9°C. The fluid flowing in the tube bundle unit is water.

[0035] When the water temperature entering the tube bundle unit is low, such as about 5°C, and the phase change medium has a phase change temperature of 9°C, the water exchanges heat with the water in the tank when it flows through the tube bundle unit, indirectly causing the phase change medium to change phase. The phase change medium continuously absorbs cold source and releases a certain amount of latent heat, causing itself to solidify, thereby achieving energy storage. Moreover, it can store more energy than using water alone or using the phase change medium alone.

[0036] During the energy storage phase, the outlet water temperature flowing through the tube bundle unit may rise to 9°C.

[0037] When the water temperature entering the tube bundle unit is high, such as about 13°C, while the water temperature inside the tank and the phase change medium temperature are about 9°C, the water temperature entering the tank is higher than the water temperature inside the tank and the phase change temperature of the phase change medium. The water inside the tank exchanges heat with the water in the tube bundle unit. At the same time, the phase change medium exchanges heat indirectly with the water in the tube bundle unit through the water inside the tank. The phase change medium absorbs heat, melts, and releases energy, thereby cooling the water flowing through the tube bundle unit.

[0038] During the energy release phase, the outlet water temperature flowing through the tube bundle unit may drop to 11~12℃.

[0039] In some other embodiments, the integrated energy storage and heat exchange water tank can also be used for heating and energy storage. It can use a phase change medium with a phase change temperature of 40~52℃, such as a phase change medium with a phase change temperature of 45℃. The fluid flowing in the tube bundle unit is water.

[0040] During the energy storage phase, the inlet and outlet water temperatures of the tube bundle unit are approximately 55°C and 50°C, respectively; during the energy release phase, the inlet and outlet water temperatures of the tube bundle unit are approximately 40°C and 35°C, respectively.

[0041] Whether in the energy storage phase or the energy release phase, the temperature fluctuation of the water flowing through the tube bundle unit is relatively small.

[0042] It should also be noted that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" or "many" means at least two, such as two, three, or more, unless otherwise explicitly specified.

[0043] In addition, in the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to mechanical connection or electrical connection, or the internal connection of two components. They can be directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0044] The above embodiments are only used to illustrate the present utility model, and are not intended to limit the present utility model. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also fall within the scope of the present utility model. The patent protection scope of the present utility model should be defined by the claims.

Claims

1. An integrated energy storage and heat exchange water tank, characterized in that, The water tank includes: A container for storing water, wherein the container is provided with a fluid inlet and a fluid outlet; An energy storage unit is disposed within the enclosure, and the energy storage unit contains a phase change medium; A tube bundle unit is disposed within the box and used for fluid flow. The two ends of the tube bundle unit are respectively connected to the fluid inlet and the fluid outlet. When the fluid flows through the tube bundle unit, it exchanges heat with the water in the box, causing a phase change in the phase change medium.

2. The integrated energy storage and heat exchange water tank according to claim 1, characterized in that, The water tank also includes a flow disturbance unit, which includes a plurality of flow disturbance pipes spaced apart inside the tank, a connecting pipe connecting the plurality of flow disturbance pipes, and a water pump mounted on the connecting pipe. Each of the aforementioned baffle tubes has multiple through holes spaced apart along its length.

3. The integrated energy storage and heat exchange water tank according to claim 2, characterized in that, The tube bundle unit extends along a first direction, and the baffle tube extends along a second direction, with the extension lines of the first direction and the extension lines of the second direction intersecting.

4. The integrated energy storage and heat exchange water tank according to claim 3, characterized in that, The energy storage unit includes a plurality of energy storage tubes spaced apart in the housing and a phase change medium filled in each of the energy storage tubes. Each of the energy storage tubes extends along a third direction, and the extension lines in the first direction, the second direction, and the third direction intersect each other.

5. The integrated energy storage and heat exchange water tank according to claim 4, characterized in that, The extension lines in the first direction, the second direction, and the third direction are all perpendicular to each other.

6. The integrated energy storage and heat exchange water tank according to claim 2, characterized in that, The connecting pipe is located outside the housing.

7. The integrated energy storage and heat exchange water tank according to any one of claims 2 to 6, characterized in that, Multiple turbulence units are provided; and / or, Multiple tube bundle units are provided.

8. The integrated energy storage and heat exchange water tank according to any one of claims 1 to 6, characterized in that, The fluid inlet and fluid outlet are respectively located on opposite sides of the housing; and / or, The tube bundle unit includes a plurality of spaced-apart fluid tubes, each of which is a corrugated pipe; and / or, The phase transition temperature of the phase change medium is 4~15℃ or 40~52℃; and / or, The fluid is water.

9. The integrated energy storage and heat exchange water tank according to any one of claims 1 to 6, characterized in that, The box body has multiple fluid inlets on one side and multiple fluid outlets on the other side, with each fluid inlet and outlet connected to a tube bundle unit.

10. The integrated energy storage and heat exchange water tank according to claim 9, characterized in that, A first diversion mechanism is provided on the housing corresponding to the position of the fluid inlet, and a second diversion mechanism is provided on the housing corresponding to the position of the fluid outlet; Each of the tube bundle units includes a plurality of spaced-apart fluid tubes; The first diversion mechanism includes a first diversion plate disposed on the side wall of the housing and a first end cap that surrounds the first diversion plate to form a first receiving cavity. The fluid inlet is disposed on the first end cap. A first diversion hole is opened on the first diversion plate corresponding to the position of the fluid pipe. The first receiving cavity is connected to each of the fluid pipes through the first diversion hole. The second diversion mechanism includes a second diversion plate disposed on the side wall of the housing and a second end cap that surrounds the second diversion plate to form a second receiving cavity. The fluid outlet is disposed on the second end cap. A second diversion hole is opened on the second diversion plate corresponding to the position of the fluid pipe. The second receiving cavity is connected to each of the fluid pipes through the second diversion hole.

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