Phase change energy storage plate

Abstract

The utility model discloses a phase-change energy storage plate, which is characterized in that a layer of channel is arranged in a plate body and comprises a plurality of phase-change energy storage material channels which are arranged side by side, and the two ends of each phase-change energy storage material channel are sealed; or two layers of channels are arranged in the plate body from top to bottom, one layer of channel is a phase change energy storage material channel, and the other layer of channel is a medium channel with two open ends; or three layers of channels are arranged in the plate body from top to bottom, the middle layer of channel is a phase change energy storage material channel, and the upper layer of channel and the lower layer of channel are medium channels with two open ends. Or two layers of channels are arranged in the plate body from top to bottom, each layer of channel is provided with medium channels and phase change energy storage material channels which are alternately distributed, and the medium channels of the upper layer of channel and the lower layer of channel are arranged in a staggered mode. The phase change energy storage plate is provided with the medium channels and the phase change energy storage material channels which are distributed in a staggered and multi-layer mode, the structure is compact, the heat / cold exchange and energy storage efficiency is high, and the phase change energy storage plate is suitable for industrial popularization and utilization.

Description

Technical Field

[0001] The utility model relates to the technical field of phase change energy storage equipment, in particular to a phase change energy storage plate. Background Technique

[0002] Energy storage technology is a technology that stores temporarily unused energy through energy storage materials with a specific volume requirement and then utilizes it when needed. This technology can effectively solve the problems of energy mismatch in supply and demand time and quantity, thereby improving energy utilization efficiency. In recent years, with the in-depth research and continuous exploration of energy storage technology by scholars, energy storage technology has played an increasingly important role in new energy development, improving energy utilization efficiency, and coordinating the mismatch of energy supply and demand in quantity and time. Therefore, it has broad application prospects in power "peak shaving and valley filling", recovery and utilization of industrial waste heat, solar energy utilization, energy saving of heat pump systems, and civil building energy fields.

[0003] Reference 1: Chinese patent document with patent publication number CN211205006U.

[0004] Reference 1 discloses a phase change energy storage plate, including a housing, a cover plate, and a phase change material storage bag. A storage groove is provided on the side surface of the housing. The phase change material storage bag can be embedded in the storage groove, and the phase change material storage bag is filled with a phase change material storage capsule. The cover plate is detachably connected to the housing and is movably arranged in the storage groove along the depth direction of the storage groove. A positioning mechanism is also provided between the cover plate and the storage groove to relatively fix the two. Since the phase change material storage bag can fully fit with the housing and the cover plate under pressure, good energy conduction efficiency can be ensured. And when it is necessary to replace the phase change material storage bag in different seasons, only need to remove the cover plate and replace it, and the operation is convenient and fast.

[0005] Reference 2: Chinese patent document with patent publication number CN210602939U.

[0006] Reference 2 discloses a phase change energy storage plate, including an energy storage plate body, a first mounting plate, an exhaust fan, an arc-shaped air permeable plate, a filter screen, air permeation holes, a pattern aluminum plate shell, a honeycomb aluminum frame, a nano material filler, and a graphene heating film. The first mounting plate and the second mounting plate are installed side by side on both sides of the energy storage plate body. The exhaust fan is embedded in the first mounting plate. In this utility model, using a pattern aluminum plate as the shell solves the problem of low thermal conductivity of traditional shell materials. Using a honeycomb aluminum frame as the support body solves the problem of low longitudinal compressive capacity of traditional phase change energy storage plates. The nano material filler is a solid material, which solves the problems of low cold storage capacity, poor structural stability, and short lifespan of traditional coolants. Using graphene material for heating solves the problem of low energy conversion. By setting an exhaust fan, air flow can be realized, and rapid energy storage of the energy storage plate body can be achieved, avoiding the heat island phenomenon. Summary of the Invention

[0007] The purpose of the present utility model is to enrich the technical route of phase change energy storage devices and provide a phase change energy storage board.

[0008] To solve the above technical problems, the technical solution adopted by the present utility model is: a phase change energy storage board,

[0009] There is a layer of channels in the board body, and this layer of channels includes a plurality of phase change energy storage material channels sealed at both ends arranged side by side. The phase change energy storage material channels are filled with phase change energy storage materials;

[0010] Or, there are two layers of channels from top to bottom in the board body. One layer of channels is a plurality of phase change energy storage material channels sealed at both ends arranged side by side, and the phase change energy storage material channels are filled with phase change energy storage materials. The other layer of channels is a medium channel with open ends;

[0011] Or, there are three layers of channels from top to bottom in the board body. The middle layer of channels is a plurality of phase change energy storage material channels sealed at both ends arranged side by side, and the phase change energy storage material channels are filled with phase change energy storage materials. The upper and lower layers of channels are medium channels with open ends.

[0012] Or, there are two layers of channels from top to bottom in the board body. Each layer of channels has alternately distributed medium channels and phase change energy storage material channels. The two ends of the phase change energy storage material channels are closed, and the inside is filled with phase change energy storage materials. The medium channels of the upper and lower layers of channels are arranged staggeredly.

[0013] As a further optimization of a phase change energy storage board of the present utility model: the cross-sections of the phase change energy storage material channels and the medium channels are both rectangular.

[0014] As a further optimization of a phase change energy storage board of the present utility model: when there are three layers of channels in the board body of the phase change energy storage board, the cross-section of the middle layer of channels is a regular hexagon, and the cross-sections of the middle layer of channels and the upper and lower layers of channels form honeycomb holes.

[0015] As a further optimization of a phase change energy storage board of the present utility model: the medium channels are separated by partition strips into a plurality of channels arranged side by side.

[0016] As a further optimization of a phase change energy storage board of the present utility model: the material of the board body is PP, PE or PPS.

[0017] As a further optimization of a phase change energy storage board of the present utility model: the two ends of the phase change energy storage material channels are sealed by means of glue sealing.

[0018] As a further optimization of a phase change energy storage board of the present utility model: the two ends of the phase change energy storage material channels are sealed by means of a glue plug board plus glue.

[0019] As a further optimization of a phase change energy storage board of the present utility model: the phase change material filled in the phase change energy storage material channel is a phase change cold storage material, and the phase change cold storage material is an organic compound, a hydrated salt or an aqueous solution of a salt.

[0020] As a further optimization of a phase change energy storage board of the present utility model: the phase change material filled in the phase change energy storage material channel is a phase change heat storage material, and the phase change heat storage material is an inorganic molten salt phase change heat storage material.

[0021] The present utility model has the following beneficial effects: the phase change energy storage board of the present utility model has staggered and multi-layer distributed medium channels and phase change energy storage material channels, with a compact structure, high heat / cold exchange and energy storage efficiency, and is suitable for industrial popularization and utilization. Description of the Drawings

[0022] Figure 1 It is a schematic structural diagram of the phase change energy storage board of Example 1;

[0023] Figure 2 It is a schematic structural diagram of the phase change energy storage board of Example 2;

[0024] Figure 3 It is a schematic structural diagram of the phase change energy storage board (rectangular holes) of Example 3;

[0025] Figure 4 It is a schematic structural diagram of the phase change energy storage board (honeycomb holes) of Example 3;

[0026] Figure 5 It is a schematic structural diagram of the phase change energy storage board of Example 4;

[0027] Markings in the figure:

[0028] 1. Phase change energy storage material channel;

[0029] 2. Medium channel. Detailed Embodiments

[0030] In order to better understand the present utility model, the content of the present utility model will be further clarified below in conjunction with embodiments, but the content of the present utility model is not limited to the following embodiments.

[0031] <Example 1>

[0032] As Figure 1 shown: a phase change energy storage board, which has a layer of channels in its board body, and this layer of channels includes a plurality of phase change energy storage material channels sealed at both ends arranged side by side, and the cross-sections of the phase change energy storage material channels are all rectangular.

[0033] The phase change energy storage material channel is filled with a phase change energy storage material. The phase change energy storage material can be a phase change cold storage material or a phase change heat storage material. The phase change cold storage material is an organic compound, a hydrated salt or an aqueous solution of a salt. The phase change heat storage material is an inorganic molten salt phase change heat storage material.

[0034] Both ends of the phase change energy storage material channel are sealed by means of glue sealing or by means of a glue plug board plus glue. Apply glue or sealant, insert the plastic into the hole, and keep the rubber material tightly bonded to the hole wall to achieve sealing.

[0035] <Example 2>

[0036] As Figure 2 shown: A phase change energy storage board, which has two layers of channels from top to bottom in its board body. One layer of channels is a plurality of phase change energy storage material channels sealed at both ends arranged side by side, and the other layer of channels is a medium channel with open ends at both ends. The cross-sections of the phase change energy storage material channel and the medium channel are both rectangular.

[0037] The medium channel is divided into a plurality of channels arranged side by side by partition strips. The partition strips can not only play the role of dividing the flow channels, but also play the role of supporting the channels.

[0038] The phase change energy storage material channel is filled with a phase change energy storage material. The phase change energy storage material can be a phase change cold storage material or a phase change heat storage material. The phase change cold storage material is an organic compound, a hydrated salt or an aqueous solution of a salt. The phase change heat storage material is an inorganic molten salt phase change heat storage material.

[0039] Both ends of the phase change energy storage material channel are sealed by means of glue sealing or by means of an edge sealing strip plus glue.

[0040] When the first medium (high-temperature water) flows through the medium channel of the phase change energy storage board, when the ambient temperature is higher than the phase change temperature of the phase change material, the material begins to change from a solid state (or a certain phase state) to a liquid state (or another phase state), and absorbs a large amount of heat during this process. This process stores the thermal energy in the environment. When the second medium (low-temperature water) flows through the medium channel of the phase change energy storage board, when the ambient temperature is lower than the phase change temperature of the phase change material, the material begins to change from a liquid state (or the current phase state) to a solid state (or another phase state), and releases the previously stored heat during this process. The released heat is transferred to the second medium, causing the second medium to heat up.

[0041] <Example 3>

[0042] A phase change energy storage board, which has three layers of channels from top to bottom in its board body. The middle layer of channels is a plurality of phase change energy storage material channels sealed at both ends arranged side by side, and the upper and lower layer of channels are medium channels with open ends at both ends.

[0043] As Figure 3As shown, the cross-sections of the middle-layer channels and the upper and lower-layer channels are all rectangular.

[0044] As Figure 4 shown, the cross-section of the middle-layer channel is a regular hexagon, and the cross-sections of the middle-layer channel and the upper and lower-layer channels form honeycomb holes.

[0045] The medium channels are separated by partition bars into a plurality of channels arranged side by side. The partition bars can not only play the role of separating the flow channels, but also play the role of supporting the channels.

[0046] The phase change energy storage material channels are filled with phase change energy storage materials. The phase change energy storage materials can be phase change cold storage materials or phase change heat storage materials. The phase change cold storage materials are organic compounds, hydrated salts or aqueous solutions of salts. The phase change heat storage materials are inorganic molten salt phase change heat storage materials.

[0047] Both ends of the phase change energy storage material channels are sealed by means of glue sealing or by means of a glue plugging plate plus glue. Apply glue or sealant, plug plastic into the holes, and keep the rubber material tightly bonded to the hole walls to achieve sealing.

[0048] When the first medium (high-temperature water) flows through the medium channels of the phase change energy storage plate, when the ambient temperature is higher than the phase change temperature of the phase change material, the material begins to change from a solid state (or a certain phase state) to a liquid state (or another phase state), and absorbs a large amount of heat during this process. This process stores the thermal energy in the environment. When the second medium (low-temperature water) flows through the medium channels of the phase change energy storage plate, the ambient temperature is lower than the phase change temperature of the phase change material, the material begins to change from a liquid state (or the current phase state) to a solid state (or another phase state), and releases the previously stored heat during this process. The released heat is transferred to the second medium, causing the second medium to heat up.

[0049] Compared with Embodiment 2, this embodiment has two medium channels, and the heat exchange efficiency will be higher.

[0050] <Embodiment 4>

[0051] As Figure 5 shown, a phase change energy storage plate has two layers of channels from top to bottom in its plate body. Each layer of channels has alternately distributed medium channels and phase change energy storage material channels. Both ends of the phase change energy storage material channels are closed, and the medium channels of the upper and lower layers of channels are arranged staggeredly.

[0052] The phase change energy storage material channels are filled with phase change energy storage materials. The phase change energy storage materials can be phase change cold storage materials or phase change heat storage materials. The phase change cold storage materials are organic compounds, hydrated salts or aqueous solutions of salts. The phase change heat storage materials are inorganic molten salt phase change heat storage materials.

[0053] Both ends of the phase change energy storage material channel are sealed by means of glue sealing or by means of a glue plugging plate plus glue. Apply glue or sealant, insert the plastic into the hole, and keep the rubber material tightly adhered to the hole wall to achieve sealing.

[0054] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various deformations or modifications within the scope of the claims, which does not affect the essence of the present invention.

Claims

1. A phase change energy storage plate, characterized in that: A layer of channels is provided in the plate body, and this layer of channels includes a plurality of phase change energy storage material channels sealed at both ends and arranged side by side. The phase change energy storage material channels are filled with phase change energy storage materials; Alternatively, there are two layers of channels in the plate body from top to bottom. One layer of channels is a plurality of phase change energy storage material channels sealed at both ends and arranged side by side. The phase change energy storage material channels are filled with phase change energy storage materials, and the other layer of channels is a medium channel with open ends; Alternatively, there are three layers of channels in the plate body from top to bottom. The middle layer of channels is a plurality of phase change energy storage material channels sealed at both ends and arranged side by side. The phase change energy storage material channels are filled with phase change energy storage materials, and the upper and lower layers of channels are medium channels with open ends; Alternatively, there are two layers of channels in the plate body from top to bottom. Each layer of channels has alternately distributed medium channels and phase change energy storage material channels. The two ends of the phase change energy storage material channels are closed, and they are filled with phase change energy storage materials. The medium channels of the upper and lower layers of channels are staggered; 2. The phase change energy storage plate according to claim 1, wherein: The cross-sections of the phase change energy storage material channels and the medium channels are both rectangular.

3. The phase change energy storage plate according to claim 1, wherein: When there are three layers of channels in the plate body of the phase change energy storage plate, the cross-section of the middle layer of channels is a regular hexagon, and the cross-sections of the middle layer of channels and the upper and lower layers of channels form honeycomb holes.

4. The phase change energy storage board according to claim 1, wherein: The medium channel is divided into a plurality of channels arranged side by side by partition strips.

5. The phase change energy storage board according to claim 1, wherein: The material of the plate body is PVC, PP, PE or PPS.

6. The phase change energy storage plate according to claim 1, wherein: Both ends of the phase change energy storage material channels are sealed by gluing.

7. The phase change energy storage plate according to claim 1, wherein: Both ends of the phase change energy storage material channels are sealed by a rubber plug plate plus glue.

8. The phase change energy storage plate according to claim 1, wherein: The phase change material filled in the phase change energy storage material channels is a phase change cold storage material, and the phase change cold storage material is an organic compound, a hydrated salt or an aqueous solution of a salt.

9. The phase change energy storage plate according to claim 1, characterized in that: The phase change material filled in the phase change energy storage material channels is a phase change heat storage material, and the phase change heat storage material is an inorganic molten salt phase change heat storage material.

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