Inorganic composite phase-change energy storage material and preparation method thereof

A phase-change energy storage material and inorganic composite technology, applied in the field of inorganic composite phase-change energy storage materials and their preparation, can solve the problems of large supercooling, achieve high energy utilization, shorten phase change time, and be easy to implement Effect

Active Publication Date: 2020-05-15
JIANGSU JITRI MOLECULAR ENG INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, crystalline hydrated salts have disadvantages such as high degree of undercooling, phase separation, and corrosion during crystallization. Thickening agent is improved, the method of adding inorganic nucleating agent is more (for example CN107011867A, CN107502299A) in the known patent at present, the method for adding organic nucleating agent is still blank at present, especially the method of adding organic fiber material to improve crystallization performance , never mentioned

Method used

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  • Inorganic composite phase-change energy storage material and preparation method thereof
  • Inorganic composite phase-change energy storage material and preparation method thereof

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preparation example Construction

[0070] The second aspect of the present invention provides a method for preparing an inorganic composite phase-change energy storage material, preferably a method for preparing the phase-change energy storage material described in the first aspect of the present invention, the method comprising the following steps:

[0071] Step 1. Weighing energy storage main material, nucleating agent and buffering agent;

[0072] Step 2, mixing the energy storage main material, nucleating agent and buffering agent in step 1 in a container to obtain a mixture;

[0073] Step 3, heating the mixture obtained in step 2;

[0074] Step 4, cooling and molding to obtain an inorganic composite phase change energy storage material.

[0075] According to the present invention, in step 1, the energy storage main material, nucleating agent and buffering agent are weighed according to the following weight proportions: 50-99 parts by weight of the main energy storage material; 0.1-20 parts by weight of th...

Embodiment 1

[0130] Weigh 100 g of barium hydroxide octahydrate, 5 g of polypropylene fiber, and 40 g of a saturated solution of barium hydroxide octahydrate;

[0131] Weaving the polypropylene fiber into a net shape on the anti-corrosion support, placing it in a container, then adding barium hydroxide octahydrate and a saturated solution of barium hydroxide octahydrate to the container, and mixing evenly to obtain a mixture;

[0132] Then the mixture was heated in an oil bath at 85°C until the octahydrate barium hydroxide was completely melted;

[0133] The melted mixture is naturally cooled and molded to obtain an inorganic composite phase change energy storage material.

Embodiment 2

[0135] Repeat the preparation process of Example 1, the only difference is that 5g of aramid fiber is weighed, and other steps are the same as in Example 1.

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Abstract

The invention discloses an inorganic composite phase-change energy storage material, a preparation method thereof, and a phase-change energy storage device containing the inorganic composite phase-change energy storage material. The inorganic composite phase-change energy storage material comprises, by weight, 50-99 parts of an energy storage main body material, 0.1-20 parts of a nucleating agentand 0.01-50 parts of a buffer agent, wherein the energy storage main body material is an inorganic phase-change material, and is preferably selected from one or more of alkali hydrates and crystallinehydrates. The inorganic composite phase-change energy storage material effectively improves the phenomena of supercooling and phase separation in the phase change process, and has the advantages of high crystallization rate, short phase-change time and good application prospect. The preparation method of the inorganic composite phase-change energy storage material is simple in process and easy toimplement, and the phase-change energy storage device containing the phase-change material is high in energy utilization rate and high in heat exchange efficiency.

Description

technical field [0001] The invention belongs to the technical field of phase change energy storage, and in particular relates to an inorganic composite phase change energy storage material and its preparation method and application. Background technique [0002] In recent years, phase change energy storage technology has received more and more attention and development in the fields of renewable energy utilization, energy saving and consumption reduction, and its application in HVAC systems is also increasing. Develop medium and low temperature phase change energy storage materials used in the field of air conditioning, which can convert cheap electric energy in the valley of electricity consumption into heat energy and store it in the phase change material, and release this part of heat during peak electricity consumption, reducing electricity consumption during peak periods , to achieve the role of peak shaving and valley filling. Among the currently known energy storage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 徐怡庄郭然王成科刘延成刘伊伟
Owner JIANGSU JITRI MOLECULAR ENG INST CO LTD
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