A kind of low temperature phase change energy storage material and preparation method thereof

A technology of energy storage material and low temperature phase change, applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of supercooling, affecting the application effect, high melting point of latent heat of phase change, etc., to achieve stable performance and exothermic process. Stable, simple preparation method
CN102268243AInactive Publication Date: 2011-12-07TIANJIN UNIV OF SCI & TECH
2 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN UNIV OF SCI & TECH
Publication Date
2011-12-07
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

The invention relates to a low-temperature phase-change heat storage material and a preparation method thereof, which is composed of pure aluminum potassium sulfate, additive calcium fluoride and deionized water. The preparation method comprises the following steps: (1) adding pure aluminum potassium sulfate at 90 to Heating at 100°C until completely melted; (2) Slowly add the calcium fluoride additive ground at normal temperature, then add deionized water and keep stirring; (3) Reheat and raise the temperature to make it fully mixed into a fluid state; ( 4) The mixture is poured into a container for packaging. The low-temperature phase-change energy storage material provided by the present invention has abundant raw materials, low price, large phase-change latent heat, and a phase-change temperature between 92.5 and 95°C. It has been verified by repeated tests that its performance is stable, and the degree of supercooling is less than 3°C. Advantages such as phase separation occur.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a phase-change energy storage material, in particular to a low-temperature phase-change energy storage material and a preparation method thereof. Background technique

[0002] Thermal energy storage is to temporarily store high temperature energy or low temperature energy for later use. Thermal energy storage is gaining increasing attention due to rising energy prices and increasing demand for renewable energy. Thermal energy storage can reduce the time and ratio matching between energy supply and energy demand, thus, it plays a crucial role in energy conservation and conservation.

[0003] Phase change energy storage materials are mainly divided into organic phase change energy storage materials and inorganic phase change energy storage materials. The former has stable performance, a wide range of phase transition temperatures, and almost no supercooling and phase separation during the exothermic process. However, its latent...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More