CN113028873A

CN113028873A - Packaging body for phase change heat storage system and application thereof

Info

Publication number: CN113028873A
Application number: CN201911253813.0A
Authority: CN
Inventors: 崔谢亮; 马振国; 于国强; 刘硕; 李文
Original assignee: Pioneer Energy Jiangsu Co ltd
Current assignee: Pioneer Energy Jiangsu Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-25

Abstract

The invention discloses a packaging body for a phase change heat storage system and application thereof. The packaging body disclosed by the invention is simple in structure, lighter in weight, more corrosion-resistant, and convenient to install and replace, and has obvious economic advantages. Meanwhile, the packaging body can be used in the same space, has higher heat storage capacity, and can meet the technical requirement of complete heat exchange within 8 hours in the field of phase change heating.

Description

Packaging body for phase change heat storage system and application thereof

Technical Field

The invention relates to the technical field of phase change energy storage, in particular to a packaging body for a phase change heat storage system and application thereof.

Background

Phase change energy storage is the storage or release of heat by utilizing the characteristic that a material can absorb or emit a large amount of latent heat when the phase state changes from solid to liquid or from liquid to gas. The phase change of the material is used for storing energy, so that the storage and the utilization of the energy are realized, and the method is an effective way for relieving the mismatching of energy supply and demand parties in time, strength and place. In the phase change heat storage heating engineering, the energy of the valley electricity is stored in the phase change material at night, and the heat is supplied when the energy is in short supply in the daytime, so that the phase change heat storage heating engineering has a huge development prospect.

The current commonly used valley electricity phase change heat storage and heating basically comprises a reflux pump, an electric heating boiler, a heat storage box, a heating heat exchange sheet and a control device. The heat storage box structure commonly used sets up the cylindrical salt column packaging body of a plurality of parallels of equidistance in the heat storage box, the heat transfer water inlet sets up the downside at the heat storage box and the lateral wall of perpendicular to heat storage box, the heat transfer water gets into in the heat storage box and goes out the heat storage box from the delivery port of heat storage box upside after carrying out the heat exchange with the salt post and gets into electric boiler heating again, the phase change heat storage material of the heat storage box of this kind of structure is whole in the salt column packaging body, because production technology and mounting structure's restriction, the range density of salt post receives certain restriction, make the phase change heat storage material total amount in the heat storage box limited, the heat storage total amount is lower, can only increase the heat storage volume through the mode that increases the heat storage box volume in the great occasion of heating demand, equipment area is big, manufacturing cost and installation cost are high, can. In addition, if sufficient energy cannot be stored for a limited time of 8 hours, the phase change thermal storage system will lose its economic advantage of peak clipping and valley filling.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the packaging body for the phase change heat storage system, and the packaging body has the advantages of light weight, corrosion resistance, large heat storage capacity, high heat exchange efficiency, low cost and the like.

In order to solve the technical problems, the invention adopts a technical scheme that:

the utility model provides a packaging body for phase change heat storage system, the packaging body includes outer ring body, the inside of outer ring body is provided with the inlayer cylinder with one heart, the packaging body is still including connecting the connecting pipe between outer ring body and inlayer cylinder, the inlayer cylinder with all pack in the outer ring body has phase change material.

As a specific implementation manner, the outer ring body and the shell of the inner cylinder are made of one or more of Polyethylene (PE), polypropylene (PP), propylene-butadiene-styrene copolymer (ABS), Polyamide (PA), Polyphenylene Sulfide (PPs), and epoxy resin.

As a specific embodiment, in the package, the radius of the inner cylinder is: distance from the outer ring body to the inner cylinder: the annular width of the outer ring body satisfies 7: 3: 7, size requirement.

As a specific implementation mode, the wall thickness of the shell of the inner cylinder and the shell of the outer ring body are controlled to be between 0.1mm and 3 mm.

In a specific embodiment, the connecting pipe is a solid pipe, and the diameter of the connecting pipe is not less than the wall thickness of the inner cylinder.

In a specific embodiment, the connecting pipes are distributed in a staggered spiral shape between the inner cylinder and the outer ring body.

As a specific embodiment, the phase-change material adopted in the inner cylinder body and the outer ring body is selected from one or a mixture of more of sodium acetate trihydrate, magnesium sulfate heptahydrate, barium hydroxide octahydrate, paraffin and ammonium aluminum sulfate dodecahydrate.

A second object of the present invention is to provide a method for manufacturing a phase change heat storage heating system, which comprises the steps of forming a phase change heat storage layer on a substrate.

A third object of the present invention is to provide the use of the above-mentioned package for a phase change thermal storage system in the fabrication of an energy storage unit and a system comprising a flow and heat/mass transfer system.

The invention has the beneficial effects that: the packaging body for the phase change heat storage system adopts the inner-layer cylinder body and the outer-layer ring body which are concentrically arranged and are connected through the connecting pipe, and the shells of the inner-layer cylinder body and the outer-layer ring body are made of non-metal corrosion-resistant materials, so that the packaging body is lighter in weight, more corrosion-resistant, has obvious economic advantages, and is convenient to install and replace. Meanwhile, by adopting the design, the heat storage capacity of the packaging body is larger in the same space, and the technical requirement of complete heat exchange in 8h in the field of phase change heating can be met.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

fig. 1 is a perspective view of a package for a phase change thermal storage system according to the present invention;

FIG. 2 is a top view of a package for a phase change thermal storage system according to the present invention;

wherein: 1. an outer ring body; 2. an inner layer cylinder; 3. and (4) connecting the pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a packaging body for a phase change heat storage system, which comprises an outer layer ring body 1, wherein an inner layer cylinder 2 is concentrically arranged inside the outer layer ring body 1, the packaging body also comprises a connecting pipe 3 connected between the outer layer ring body 1 and the inner layer cylinder 2, and phase change materials are filled in the inner layer cylinder 2 and the outer layer ring body 1.

Here, the outer ring 1 and the inner cylinder 2 are made of one or more of Polyethylene (PE), polypropylene (PP), propylene-butadiene-styrene copolymer (ABS), Polyamide (PA), Polyphenylene Sulfide (PPs), and epoxy resin. The shell made of the non-metal corrosion-resistant material is lighter in weight, more corrosion-resistant, and convenient to install and replace, and has obvious economic advantages.

Here, in the package, the radius of the inner cylinder 2: distance from the outer ring 1 to the inner cylinder 2: the annular width of the outer ring body 1 satisfies 7: 3: 7, size requirement. Through the size design, the heat storage capacity of the packaging body can be exerted to the maximum in the same space, and the wall thicknesses of the shells of the inner layer cylinder 2 and the outer layer ring body 1 are controlled to be between 0.1mm and 3 mm.

Here, the connecting pipe 3 is a solid pipe, and the diameter of the connecting pipe 3 is not smaller than the wall thickness of the inner cylindrical body 2. The connecting pipes 3 are provided with a plurality of connecting pipes 3 which are distributed between the inner-layer cylinder 2 and the outer-layer ring body 1 in a staggered spiral shape. By adopting the arrangement mode, the supporting performance between the inner-layer cylinder 2 and the outer-layer ring body 1 can be improved.

The phase-change material adopted in the inner column body 2 and the outer ring body 1 is one or a mixture of more of sodium acetate trihydrate, magnesium sulfate heptahydrate, barium hydroxide octahydrate, paraffin and ammonium aluminum sulfate dodecahydrate.

Example one

The present example provides a packaging body for a phase change thermal storage system, the radius of an inner cylinder 2 of the packaging body is 49mm, the distance from an outer ring body 1 to the inner cylinder 2 is 21mm, and the annular width of the outer ring body 1 is 49 mm. The inner-layer cylinder 2, the outer-layer ring body 1 and the connecting pipe 3 are all made of ABS resin, and the thickness of the shells of the inner-layer cylinder 2 and the outer-layer ring body 1 is 2 mm; the connecting pipe 3 is a solid pipe with a diameter of 2 mm.

In this example, sodium acetate trihydrate is selected as the solid-liquid phase change material, and has a phase change point of 58 deg.C and a density of 1.53cm³The enthalpy value is 227J/g. The packaging body is formed secondarily through 3D printing and plastic welding technologies. The packaging body in the embodiment is placed in an array type phase change heat storage water tank, the heat filling process (water heating at 80 ℃) is observed, the time required for the internal phase material of the packaging body to completely reach the phase change point is 4h and 10min, and the heat filling requirement of 8h is met.

Example two

In the embodiment, the radius of the inner cylinder 2 of the packaging body is 49mm, the distance from the outer ring body 1 to the inner cylinder 2 is 21mm, and the annular width of the outer ring body 1 is 49 mm. The inner-layer cylinder 2, the outer-layer ring body 1 and the connecting pipe 3 are made of PP resin, and the thickness of the shells of the inner-layer cylinder 2 and the outer-layer ring body 1 is 2 mm; the connecting pipe 3 is a solid pipe with a diameter of 2 mm.

In this example, barium hydroxide octahydrate is used as solid-liquid phase change heat storage material with phase change point of 78 deg.C and density of 1.93cm³The enthalpy value is 265J/g. The packaging body is formed secondarily through 3D printing and plastic welding technologies. The packaging body in the embodiment is placed in an array type phase change heat storage water tank, the heat filling process (water heating at 99 ℃) is observed, the time required for the internal phase material of the packaging body to completely reach the phase change point is 4h and 40min, and the heat filling requirement of 8h is met.

From the

embodiments

1 and 2, we can see that the packaging body for the phase change heat storage system has larger heat storage capacity in the same space, and can meet the technical requirement of complete heat exchange in 8h in the field of phase change heating.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a packaging body for phase change heat storage system, its characterized in that, the packaging body includes outer ring body, the inside of outer ring body is provided with the inlayer cylinder with one heart, the packaging body is still including connecting the connecting pipe between outer ring body and inlayer cylinder, the inlayer cylinder with all pack in the outer ring body has phase change material.

2. The packaging body for the phase-change thermal storage system according to claim 1, wherein the outer ring body and the shell of the inner cylinder are made of one or more of polyethylene, polypropylene, propylene-butadiene-styrene copolymer, polyamide, polyphenylene sulfide and epoxy resin.

3. The package for a phase change thermal storage system according to claim 1, wherein in the package, the radius of the inner cylinder is: distance from the outer ring body to the inner cylinder: the annular width of the outer ring body satisfies 7: 3: 7, size requirement.

4. The packaging for a phase change thermal storage system according to claim 1, wherein the wall thickness of the shell of each of the inner cylinder and the outer ring is controlled to be between 0.1mm and 3 mm.

5. The package for a phase change thermal storage system according to claim 1, wherein the connection tube is a solid tube having a diameter not less than a wall thickness of the inner cylinder.

6. The package for a phase change thermal storage system according to claim 5, wherein the plurality of connecting tubes are arranged in a staggered spiral pattern between the inner cylinder and the outer ring.

7. The packaging for a phase change thermal storage system according to claim 1, wherein the phase change material used in the inner and outer cylinders is selected from one or more of sodium acetate trihydrate, magnesium sulfate heptahydrate, barium hydroxide octahydrate, paraffin, aluminum ammonium sulfate dodecahydrate.

8. Use of a package for a phase change thermal storage system according to any one of claims 1 to 7 in a phase change thermal storage heating system.

9. Use of a package for a phase change thermal storage system according to any one of claims 1 to 7 in the manufacture of an energy storage unit and a flow and heat/mass transfer containing system.