An ice storage and heat storage integrated device

Abstract

The utility model discloses a kind of ice storage integrated equipment, it is related to energy-saving and emission-reducing technical field.The ice storage integrated equipment of the utility model sets ice storage device between upper water distributor and lower water distributor, and ice storage device includes multiple groups of vertically arranged ice-making coil pipe, and each group of ice-making coil pipe is vertically arranged and is composed of multiple U-shaped coil pipes.The ice storage integrated equipment can combine two sets of equipment into a set of equipment, store ice in summer and store heat in winter, improve equipment utilization, reduce building space requirements;Water flow direction of water distributor is changed from horizontal to vertical, flows along the direction of coil pipe using gravity, melts ice layer attached on coil pipe, so that ice melting is more sufficient, while it can avoid disturbing temperature stratification of water, meets the requirement of heat storage, improves refrigeration and heating effect.

Description

Technical Field

[0001] This utility model relates to the field of energy conservation and emission reduction technology, specifically to an integrated ice and heat storage device. Background Technology

[0002] In recent years, the increasingly severe power shortage and energy scarcity have become a major bottleneck hindering economic development. With the growing awareness of the energy crisis across society, the government has clearly prioritized energy conservation and efficiency in its energy work. Recently, the Chinese government has called for a substantial strengthening of resource conservation efforts and the construction of a conservation-oriented society. Therefore, all sectors must make full use of existing power resources while conserving electricity. Currently, the tight power supply has two characteristics: first, the grid load factor is low, and the peak-valley difference in the system is widening; second, with changes in the electricity consumption structure, the proportion of industrial electricity consumption is relatively decreasing, while urban residential and commercial electricity consumption is rapidly increasing. Air conditioning accounts for 40% of building electricity consumption, so conserving peak-hour electricity consumption in air conditioning systems will be a crucial step in alleviating the power shortage. Currently, power departments in various provinces and cities have announced electricity policies and time-of-use pricing to promote peak shaving and valley filling through economic means.

[0003] Energy storage technology is an important technical measure for transferring peak-hour electricity, developing off-peak electricity, optimizing resource allocation, and protecting the ecological environment. Ice storage technology was introduced and developed in China in the 1990s. As a mature technology for electricity application, it has been widely used in large shopping malls, office buildings, mixed-use buildings, hotels, restaurants, entertainment venues, stadiums, financial buildings, hospitals, schools, and other places, with significant results and broad development prospects.

[0004] An ice storage air conditioning system is an air conditioning system that uses an electric refrigeration mechanism to store cold energy in the form of ice during off-peak hours when the power load is very low. During the daytime when the power load is high, the stored cold energy is released to meet the air conditioning load requirements of the building.

[0005] like Figure 1 As shown, most traditional ice storage devices use horizontal coils. During cooling, water is introduced on one side and discharged on the other, causing the water to flow along the coils and melt the ice adhering to them. However, this type of ice and heat storage system requires two sets of energy storage equipment, namely, separate ice storage tanks and heat storage tanks. In summer, ice is stored in the ice storage tanks, and in winter, heat is stored in the heat storage tanks. This method results in low equipment utilization and occupies a significant amount of building space.

[0006] like Figure 2 As shown, another traditional water-based cooling and heating system utilizes the principle that water has different densities at different temperatures. Its water distribution device is arranged vertically, but employs a temperature stratification method to store or release energy. However, water-based cooling has a lower energy density and a larger volume compared to ice-based cooling. Utility Model Content

[0007] To address the issues of low utilization rate and large building space occupation of existing energy storage equipment, this utility model provides a novel integrated ice and heat storage device that combines two sets of equipment into one, storing ice in summer and heat in winter, thereby improving equipment utilization, reducing building space requirements, and enhancing cooling and heating performance.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An integrated ice and heat storage device includes an energy storage tank, an ice storage unit, an upper water distributor, and a lower water distributor, wherein: An ice storage device, an upper water distributor, and a lower water distributor are installed inside the energy storage tank. The upper water distributor is installed at the top of the energy storage tank. The upper water distributor is used to spray water upward or draw water from the top. The upper water distributor includes an upper main pipe, an upper connecting pipe and an upper water distribution pipe connected in sequence. The top of the upper water distribution pipe has evenly spaced openings. The lower water distributor is located at the bottom of the energy storage tank. The lower water distributor is used to spray water downwards or draw water from the bottom. The lower water distributor includes a lower main pipe, a lower connecting pipe and a lower water distribution pipe connected in sequence. The bottom of the lower water distribution pipe has evenly spaced holes. The ice storage device is located between the upper and lower water distributors. The ice storage device includes multiple sets of vertically arranged ice-making coils, each set of ice-making coils consisting of multiple U-shaped coils arranged vertically.

[0009] Optionally, it includes 1 to 1000 sets of ice storage devices; each set of ice storage devices may include 1 to 100 sets of vertically arranged ice-making coils; each set of ice-making coils may include 1 to 100 vertically arranged U-shaped coils.

[0010] Optionally, the inlet ends of multiple U-shaped coils in each group of ice-making coils are connected through the same refrigerant inlet branch pipe, and the outlet ends are connected through the same refrigerant outlet branch pipe; multiple refrigerant inlet branch pipes of each group of ice storage devices are connected to the same refrigerant inlet main pipe, and multiple refrigerant outlet branch pipes of each group of ice storage devices are connected to the same refrigerant outlet main pipe; multiple refrigerant inlet main pipes are connected to the same refrigerant inlet main pipe, and multiple refrigerant outlet main pipes are connected to the same refrigerant outlet main pipe.

[0011] Optionally, the lower water distributor is laid along the bottom surface of the energy storage tank, and the distance between the lower water distributor and the bottom surface of the energy storage tank is 150-300mm; the upper water distributor and the lower water distributor are hydraulically symmetrically arranged, and the distance between the upper water distributor and the top surface of the energy storage tank is 500-900mm, and the space between the upper water distributor and the top surface of the energy storage tank forms a maintenance passage.

[0012] Optionally, the energy storage tank includes a shell and an insulation section, and an inspection door is provided on the top surface of the shell; the insulation section is fitted with the inner surface of the shell and the inspection door; the lowest water level of the energy storage tank is 600 mm from the top surface.

[0013] Optionally, the shell is a steel tank or a concrete tank; the insulation section is polyurethane foam or high-density extruded board; the thickness of the insulation section is 100-200 mm.

[0014] Optionally, the energy storage tank is provided with a refrigerant inlet hole, an upper water distribution pipe hole, a refrigerant outlet hole, and a lower water distribution pipe hole; wherein, the refrigerant inlet hole is used for the main refrigerant inlet pipe to pass through the shell, the refrigerant outlet hole is used for the main refrigerant outlet pipe to pass through the shell, and the refrigerant inlet hole and the refrigerant outlet hole are located on either side or the top of the energy storage tank; the upper water distribution pipe hole is used for the upper main pipe to pass through the shell, the lower water distribution pipe hole is used for the lower main pipe to pass through the shell, and the upper water distribution pipe hole and the lower water distribution pipe hole are located on either side of the energy storage tank and are located below the lowest water level of the energy storage tank.

[0015] Optionally, the energy storage tank also includes a steel frame; wherein the steel frame is connected to the inner wall of the shell, and the refrigerant inlet branch pipe, the refrigerant inlet main pipe, the refrigerant outlet branch pipe and the refrigerant outlet main pipe are fixed to the steel frame.

[0016] Optionally, the height of the ice-making coil is 1.2-5m; the U-shaped coil is made of modified polypropylene material; the diameter of the U-shaped coil is 6-30mm.

[0017] Optionally, the upper and lower water distributors are made of PE-RT type II pipes; the refrigerant used in the ice storage device is an aqueous solution of ethylene glycol with a mass ratio of 25%.

[0018] One embodiment of the above-described utility model has the following advantages or beneficial effects: 1. The integrated ice storage and heat storage device provided in this embodiment combines the functions of ice storage and heat storage devices into one, improving equipment utilization and reducing the building space occupied. 2. Change the coil arrangement direction from the traditional horizontal direction to the vertical direction, and set the water distributor in the upper and lower directions of the ice storage device. Change the water flow direction of the water distributor from horizontal to vertical. Utilize gravity to flow along the direction of the coil to melt the ice layer attached to the coil, so that the ice melting is more complete. At the same time, it can avoid disturbing the water temperature stratification and take into account the heat storage requirements. 3. By utilizing the characteristics of water storage cooling, it can not only make full use of the latent heat of ice, but also utilize the sensible heat in the storage tank, so that the water temperature in the storage tank can reach more than 10 degrees after the cooling is released, completely eliminating the residual ice phenomenon in traditional external ice melting equipment. 4. Under the same cold storage capacity, the increased sensible heat ratio leads to a reduction in the thickness of the ice layer in the ice storage equipment, thereby improving the efficiency of the ice-making process. 5. The coil is made of heat-resistant high-density composite material, which not only can store ice, but also has the characteristics of high temperature resistance, so that the equipment can be immersed in hot water without material changes or corrosion. 6. The heat-resistant high-density composite material used also has the characteristic of poor thermal conductivity, which means that it does not conduct heat and thus does not destroy the temperature stratification when using density difference to achieve temperature stratification. Attached Figure Description

[0019] Figure 1 It is a traditional ice storage device that uses horizontal coils; Figure 2 It is a traditional water-based cooling and heating equipment; Figure 3 A schematic diagram of an integrated ice and heat storage device provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of an ice storage device for an integrated ice and heat storage equipment provided in this embodiment of the present invention; Figure 5 This is a schematic diagram of an ice-making coil of an integrated ice and heat storage device provided in an embodiment of this utility model; Figure 6 This is a schematic diagram of the energy storage tank of an integrated ice and heat storage device provided in an embodiment of this utility model; Figure 7 This is a schematic diagram of the water distributor of an integrated ice and heat storage device provided in an embodiment of this utility model; Figure 8 This is a schematic diagram of the lower water distributor of an integrated ice and heat storage device provided in an embodiment of this utility model; Figure 9 This is a schematic diagram illustrating the application of an integrated ice and heat storage device provided in this embodiment of the present invention during summer nights. Figure 10 This is a schematic diagram illustrating the application of an integrated ice and heat storage device provided by this utility model during the daytime in summer; Figure 11 This is a schematic diagram illustrating the application of an integrated ice and heat storage device provided in this embodiment of the invention during winter nights. Figure 12 This is a schematic diagram illustrating the application of an integrated ice and heat storage device during the daytime in winter, as provided in this embodiment of the utility model.

[0020] In the picture, 1-Energy storage tank; 11-Shell; 12-Insulation section; 13-Inspection door; 14-Refrigerant inlet port; 15-Upper water distribution pipe port; 16-Refrigerant outlet port; 17-Lower water distribution pipe port; 2-Ice storage device; 21-U-shaped coil; 22-Refrigerant inlet branch pipe; 23-Refrigerant outlet branch pipe; 24-Refrigerant inlet main pipe; 25-Refrigerant outlet main pipe; 3-Upper water distributor; 31-Upper main pipe; 32-Upper connecting pipe; 33-Upper water distribution pipe; 4-Lower water distributor; 41-Lower main pipe; 42-Lower connecting pipe; 43-Lower water distribution pipe. Detailed Implementation

[0021] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of the present invention, including various details to aid understanding. These embodiments should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0022] like Figure 3 As shown in the figure, the integrated ice and heat storage device provided in this embodiment of the utility model mainly includes: an energy storage tank 1, an ice storage device 2, an upper water distributor 3, and a lower water distributor 4.

[0023] The energy storage tank 1 is equipped with an ice storage device 2, an upper water distributor 3, and a lower water distributor 4. The upper water distributor 3 is located at the top of the energy storage tank 1 and is used to spray water upwards or draw water from the top. The lower water distributor 4 is located at the bottom of the energy storage tank 1 and is used to spray water downwards or draw water from the bottom. The ice storage device 2 is located between the upper water distributor 3 and the lower water distributor 4.

[0024] like Figure 4 and 5 As shown, the ice storage device 2 includes multiple sets of vertically arranged ice-making coils (not marked in the figure), each set consisting of multiple U-shaped coils 21 arranged vertically. Specifically, the inlet ends of the multiple U-shaped coils 21 in each set of ice-making coils are connected by the same refrigerant inlet branch pipe 22, and the outlet ends are connected by the same refrigerant outlet branch pipe 23; the multiple refrigerant inlet branch pipes 22 of each set of ice storage device 2 are connected to the same refrigerant inlet main pipe 24, and the multiple refrigerant outlet branch pipes 23 of each set of ice storage device 2 are connected to the same refrigerant outlet main pipe 25; the refrigerant inlet main pipe 24 passes through the refrigerant inlet pipe hole and connects the ice storage device 2 to the external refrigerant storage device, and the refrigerant outlet main pipe 25 passes through the refrigerant outlet pipe hole and connects the ice storage device 2 to the external refrigerant storage device. As a preferred embodiment, the refrigerant used in the ice storage device 2 is an aqueous solution of ethylene glycol with a mass ratio of 25%.

[0025] In this embodiment of the invention, the U-shaped coil 21 of the ice storage device 2 is arranged vertically. During refrigeration, the water sprayed by the upper water distributor 3 can flow downward along the U-shaped coil 21 under the action of gravity, melting the ice layer attached to the coil and making the ice melting more complete.

[0026] In this embodiment of the utility model, the refrigerant inlet branch pipe 22, the refrigerant inlet main pipe 24, the refrigerant outlet branch pipe 23, and the refrigerant outlet main pipe 25 of the ice storage device 2 are fixed to the steel bracket (not shown in the figure), thereby suspending the U-shaped coil 21 on the steel bracket. The steel bracket is connected to the inner side wall of the shell. The steel bracket can serve as a support and fixing device for the ice storage device 2, the upper water distributor 3, and the lower water distributor 4, and can also serve as a support structure for maintenance access for maintenance operations.

[0027] In this embodiment of the invention, the integrated ice and heat storage equipment may include 1 to 1000 sets of ice storage devices 2. The number of ice storage devices 2 can be selected according to the actual situation such as the application scale, for example, 66 sets or 800 sets. Furthermore, these ice storage devices 2 can be arranged side-by-side in the integrated ice and heat storage equipment, i.e., all arranged on the same layer, or they can be stacked, i.e., arranged in multiple layers. Each set of ice storage devices 2 may include 1 to 100 sets of vertically arranged ice-making coils. The number of ice-making coils can be selected according to the actual situation such as the application scale, for example, 36 sets or 50 sets. Each set of ice-making coils may include 1 to 100 vertically arranged U-shaped coils 21. The number of U-shaped coils 21 can be selected according to the actual situation such as the application scale, for example, 30 or 90 coils.

[0028] In this embodiment of the invention, the height of the ice-making coil is preferably 1.2-5m. Within this height range, the pressure drop of the equipment is small, which is beneficial to the circulation of refrigerant in the ice-making coil. At the same time, increasing the height of the ice-making coil can also reduce the floor space occupied by the equipment, thereby saving space. The inner diameter of the U-shaped coil 21 is preferably 6mm-30mm.

[0029] As a preferred embodiment, the U-shaped coil 21 is made of modified polypropylene (PP) material, which has the property of high temperature resistance, so that the ice storage device 2 can be immersed in hot water without material changes or corrosion.

[0030] like Figure 3 and 6As shown, the energy storage tank 1 includes a shell 11 and an insulation section 12. An inspection door 13 is provided on the top surface of the shell 11. The shell 11 adopts a sealed design, and the insulation section 12 is fitted to the inner surface of the shell 11. The shell 11 can be a steel tank or a concrete tank. The insulation section 12 can be polyurethane foam or high-density extruded polystyrene board. Furthermore, the inner side of the inspection door 13 also has a fitted insulation section 12. The insulation sections 12 on the inner sides of the shell 11 and the inspection door 13 have the same thickness, preferably 100-200 mm. Since temperature and humidity vary greatly in different regions, the thickness of the insulation section 12 can be set according to the actual application. In addition, the lowest water level of the energy storage tank 1 is 600 mm from the top surface.

[0031] See also Figure 3 and 6 -8. The energy storage tank 1 may also be equipped with a refrigerant inlet hole 14, an upper water distribution pipe hole 15, a refrigerant outlet hole 16, and a lower water distribution pipe hole 17. The refrigerant inlet hole 14 and the refrigerant outlet hole 16 are holes through which pipes for refrigerant to enter and exit the tank pass through the housing 11, allowing the refrigerant in the ice storage device 2 to communicate with an external refrigerant storage device. The refrigerant inlet hole 14 and the refrigerant outlet hole 16 can be located on either side of the energy storage tank 1 or on the top of the energy storage tank 1. However, to ensure that the refrigerant travels the same distance within the ice storage device 2, it is preferable to set the refrigerant inlet hole 14 and the refrigerant outlet hole 16 relatively far apart, for example, by setting the refrigerant inlet hole 14 and the refrigerant outlet hole 16 on opposite sides, or by setting the refrigerant inlet hole 14 and the refrigerant outlet hole 16 diagonally opposite each other on the top surface. The upper water distribution pipe hole 15 and the lower water distribution pipe hole 17 are pipes for the water distributor to pass through the housing 11, allowing the water in the energy storage tank 1 to supply cooling or heating users. The upper water distribution pipe hole 15 and the lower water distribution pipe hole 17 are located on either side of the energy storage tank 1 and are below the lowest water level of the energy storage tank 1. In addition, the sealing measures at the junctions where the above-mentioned pipes pass through the energy storage tank 1 can be implemented using existing processes or technologies, and will not be described in detail in this embodiment of the utility model.

[0032] like Figure 7 As shown, the upper water distributor 3 includes an upper main pipe 31, an upper connecting pipe 32, and an upper water distribution pipe 33. The top of the upper water distribution pipe 33 has evenly spaced openings, meaning the upper water distribution pipe 33 has upward-facing openings. The upper main pipe 31, upper connecting pipe 32, and upper water distribution pipe 33 are connected sequentially. Simultaneously, the upper connecting pipe 32 and upper water distribution pipe 33 are connected to the top of the steel support frame. The upper main pipe 31 passes through the upper water distribution pipe hole 15, connecting the internal upper connecting pipe 32 and upper water distribution pipe 33 to the external cold or hot terminal. The upper main pipe 31 can be fixed to the upper part of the inner wall of the energy storage tank 1 by pipe clamps.

[0033] like Figure 8As shown, the lower water distributor 4 includes a lower main pipe 41, a lower connecting pipe 42, and a lower water distribution pipe 43. The bottom of the lower water distribution pipe 43 has evenly spaced openings, meaning the lower water distribution pipe 43 has downward-facing openings. The lower main pipe 41, lower connecting pipe 42, and lower water distribution pipe 43 are connected sequentially. Simultaneously, the lower connecting pipe 42 and lower water distribution pipe 43 are connected to the bottom of the steel support frame. The lower main pipe 41 passes through the lower water distribution pipe hole 17, connecting the internal lower connecting pipe 42 and lower water distribution pipe 43 to the external cold or hot water terminal. The lower main pipe 41 can also be fixed to the upper inner wall of the energy storage tank 1 using pipe clamps.

[0034] As a preferred embodiment, the upper water distributor 3 and the lower water distributor 4 can be made of PE-RT type II pipe. It should be noted that the holes in the upper water distribution pipe 33 and the lower water distribution pipe 43 can be a single row of evenly distributed holes or multiple rows of evenly distributed holes. It is preferred to use two, three, four, or five rows of evenly distributed holes. Furthermore, the angle, diameter, or number of holes can be determined according to actual needs.

[0035] The lower water distributor 4 is laid along the bottom surface of the energy storage tank 1, meaning the plane shape enclosed by the lower water distributor 4 is the same as the bottom shape of the energy storage tank 1. This ensures that the water in the energy storage tank 1 is evenly distributed, preventing temperature stratification of the water within the tank. Furthermore, the distance between the lower water distributor 4 and the bottom surface of the energy storage tank 1 is preferably 150-300 mm, maximizing the utilization of the water volume within the tank. The upper water distributor 3 and the lower water distributor 4 are hydraulically symmetrically arranged, meaning their coverage areas are the same. The distance between the upper water distributor 3 and the top surface of the energy storage tank 1 is 500-900 mm, and the space between the upper water distributor 3 and the top surface of the energy storage tank 1 forms a maintenance passage.

[0036] like Figure 9-12 The diagram shown illustrates the application of an integrated ice and heat storage device according to an embodiment of this utility model in different scenarios. The diagram only shows how the integrated ice and heat storage device works with the user, the refrigeration unit, and the heating unit; the pipe connections and controls shown are not intended to limit the solution. Figure 9 It involves using a refrigeration unit to convert idle electrical energy into cooling capacity during off-peak electricity hours in summer nights. Figure 10 During peak electricity consumption periods in summer, an integrated ice and heat storage device is used to provide cooling to users by storing cold energy. Figure 11 It uses a heating unit to convert idle electrical energy into heat during off-peak hours at night in winter. Figure 12 During peak electricity consumption periods in winter, an integrated ice and heat storage device is used to store heat for users.

[0037] As can be seen from the above description, the integrated ice and heat storage equipment of this utility model can combine two sets of equipment into one, storing ice in summer and heat in winter, thereby improving equipment utilization and reducing building space requirements; it changes the water flow direction of the water distributor from horizontal to vertical, using gravity to flow along the direction of the coil, melting the ice layer attached to the coil, making the ice melting more complete, while avoiding disturbing the water temperature stratification, taking into account the requirements of heat storage, and improving the cooling and heating effect.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and simple improvements made on the substantive content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated ice and heat storage device, characterized in that, It includes an energy storage tank, an ice storage device, an upper water distributor, and a lower water distributor, wherein: An ice storage device, an upper water distributor, and a lower water distributor are installed inside the energy storage tank. The upper water distributor is installed at the top of the energy storage tank. The upper water distributor is used to spray water upward or draw water from the top. The upper water distributor includes an upper main pipe, an upper connecting pipe and an upper water distribution pipe connected in sequence. The top of the upper water distribution pipe has evenly spaced openings. The lower water distributor is located at the bottom of the energy storage tank. The lower water distributor is used to spray water downwards or draw water from the bottom. The lower water distributor includes a lower main pipe, a lower connecting pipe and a lower water distribution pipe connected in sequence. The bottom of the lower water distribution pipe has evenly spaced holes. The ice storage device is located between the upper and lower water distributors. The ice storage device includes multiple sets of vertically arranged ice-making coils, each set of ice-making coils consisting of multiple U-shaped coils arranged vertically.

2. The integrated ice and heat storage device according to claim 1, characterized in that, It includes 1 to 1000 sets of ice storage devices; each set of ice storage devices may include 1 to 100 sets of vertically arranged ice-making coils; each set of ice-making coils may include 1 to 100 vertically arranged U-shaped coils.

3. The integrated ice and heat storage device according to claim 1, characterized in that, The inlet ends of the multiple U-shaped coils of each ice-making coil are connected through the same refrigerant inlet branch pipe, and the outlet ends are connected through the same refrigerant outlet branch pipe; the multiple refrigerant inlet branch pipes of each ice storage unit are connected to the same refrigerant inlet main pipe, and the multiple refrigerant outlet branch pipes of each ice storage unit are connected to the same refrigerant outlet main pipe; the multiple refrigerant inlet main pipes are connected to the same refrigerant inlet main pipe, and the multiple refrigerant outlet main pipes are connected to the same refrigerant outlet main pipe.

4. The integrated ice and heat storage device according to claim 1, characterized in that, The lower water distributor is laid along the bottom surface of the energy storage tank, and the distance between the lower water distributor and the bottom surface of the energy storage tank is 150-300mm; the upper water distributor and the lower water distributor are hydraulically symmetrically arranged, and the distance between the upper water distributor and the top surface of the energy storage tank is 500-900mm. The space between the upper water distributor and the top surface of the energy storage tank forms a maintenance passage.

5. The integrated ice and heat storage device according to claim 1, characterized in that, The energy storage tank includes a shell and an insulation section. An inspection door is provided on the top surface of the shell. The insulation section is fitted with the inner surface of the shell and the inspection door. The lowest water level of the energy storage tank is 600 mm from the top surface.

6. The integrated ice and heat storage device according to claim 5, characterized in that, The shell is a steel or concrete tank; the insulation section is made of polyurethane foam or high-density extruded polystyrene board; the thickness of the insulation section is 100-200 mm.

7. The integrated ice and heat storage device according to claim 5, characterized in that, The energy storage tank is equipped with a refrigerant inlet hole, an upper water distribution pipe hole, a refrigerant outlet hole, and a lower water distribution pipe hole. The refrigerant inlet hole is used for the main refrigerant inlet pipe to pass through the shell, and the refrigerant outlet hole is used for the main refrigerant outlet pipe to pass through the shell. The refrigerant inlet hole and the refrigerant outlet hole are located on either side or the top of the energy storage tank. The upper water distribution pipe hole is used for the upper main pipe to pass through the shell, and the lower water distribution pipe hole is used for the lower main pipe to pass through the shell. The upper water distribution pipe hole and the lower water distribution pipe hole are located on either side of the energy storage tank and are below the lowest water level of the energy storage tank.

8. The integrated ice and heat storage device according to claim 5, characterized in that, The energy storage tank also includes a steel frame; wherein the steel frame is connected to the inner wall of the shell, and the refrigerant inlet branch pipe, the refrigerant inlet main pipe, the refrigerant outlet branch pipe and the refrigerant outlet main pipe are fixed to the steel frame.

9. The integrated ice and heat storage device according to claim 3, characterized in that, The height of the ice-making coil is 1.2-5m; the U-shaped coil is made of modified polypropylene material; the diameter of the U-shaped coil is 6-30mm.

10. An integrated ice and heat storage device according to any one of claims 1-9, characterized in that, The upper and lower water distributors are made of PE-RT type II pipes; the refrigerant used in the ice storage device is an ethylene glycol aqueous solution with a mass ratio of 25%.

Images