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A kind of preparation method of thermal storage mortar

A mortar and heat storage technology, applied in the field of energy storage building materials, can solve the problems of small thermal conductivity and achieve good thermal stability and high heat storage density

Active Publication Date: 2018-05-01
SUZHOU PORCELAIN INSULATOR WORKS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, organic phase change materials have the disadvantage of low thermal conductivity, so people usually add materials with high thermal conductivity such as metal powder or graphite to improve the heat transfer performance of organic phase change materials. To enhance its heat transfer performance, such as finned tube heat exchanger

Method used

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  • A kind of preparation method of thermal storage mortar
  • A kind of preparation method of thermal storage mortar
  • A kind of preparation method of thermal storage mortar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The phase change material is a mixture of octadecane, dodecyl alcohol and tetradecyl alcohol, and the proportion is 30wt% octadecane, 28wt% dodecyl alcohol and 42wt% tetradecyl alcohol. The volume of the alumina matrix composite phase change material accounts for 15% of the total volume of the mortar. figure 1 It is the DSC curve chart of the phase change material of the present embodiment. From figure 1 It can be seen that the phase change temperature of the phase change material is 24.80° C., and the phase change enthalpy is 202.95821 J / g. The phase change temperature is between 20-30°C, and the phase change enthalpy is relatively large, so it is a phase change material suitable for heat storage mortar.

[0030] A method for preparing heat storage mortar, which comprises the following steps:

[0031] (1) The raw materials for preparing the phase change material are weighed according to the mass ratio, and the ratio of each component of the raw materials is: 30wt% o...

Embodiment 2

[0039] The phase change material is a mixture of octadecane, dodecyl alcohol and tetradecyl alcohol, and the proportion is 30wt% octadecane, 28wt% dodecyl alcohol and 42wt% tetradecyl alcohol. The addition amount of the alumina matrix composite phase change material is 22.5% of the total volume of the mortar.

[0040] A method for preparing heat storage mortar, which comprises the following steps:

[0041] (1) The preparation process of the composite phase change material is the same as in Example 1, that is, steps (1)-(5) of Example 1 are repeated.

[0042] (2) Preparation of thermal storage mortar: mix alumina-based composite phase change material with sand and cement, the volume ratio of the three is 22.5% composite phase change material, 25% cement, 52.5% sand, and add 0.2wt% of The water reducer is molded according to the water cement ratio of 0.5.

[0043] After testing, the phase change temperature of the phase change material prepared in this embodiment is 24.80° C., a...

Embodiment 3

[0045] The phase change material is a mixture of octadecane, dodecyl alcohol and tetradecyl alcohol, and the proportion is 30wt% octadecane, 28wt% dodecyl alcohol and 42wt% tetradecyl alcohol. The addition amount of the alumina matrix composite phase change material is 30% of the total volume of the cement mortar.

[0046] A method for preparing heat storage mortar, which comprises the following steps:

[0047] (1) The preparation process of the composite phase change material is the same as in Example 1, that is, steps (1)-(5) of Example 1 are repeated.

[0048] (2) Preparation of heat storage mortar: mix alumina-based composite phase change material with sand and cement, the volume ratio of the three is 30% composite phase change material, 25% cement, 45% sand, and add 0.2wt% of The water reducer is molded according to the water cement ratio of 0.5. After testing, the phase change temperature of the phase change material prepared in this embodiment is 24.80° C., and the ph...

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Abstract

The invention provides a preparation method of heat storage mortar. The preparation method comprises the following steps: (1) preparing a phase change material: mixing octadecane, dodecanol, and tetradecanol according to a ratio of (20-30):(18-28):(42:57); (2) preparing an alumina base composite phase change material: taking alumina as the wall material and an organic phase change material as the phase change core material, and preparing an alumina base composite phase change material through a sol-gel method; (3) preparing heat storage mortar: mixing the prepared alumina base composite phase change material with cement and sand to prepare heat storage mortar containing a composite phase change material according to a volume ratio of cement to composite phase change material to sand of 25:15-30:45-60. The formula is reasonable, the heat storage density is adjustable, phase change material will not be leaked, the stability is high, the heat storage performance of mortar is largely improved, and thus the heat storage mortar has a good application prospect.

Description

technical field [0001] The invention belongs to the field of energy storage building materials, and in particular relates to a preparation method of heat storage mortar. Background technique [0002] Energy conservation has drawn widespread attention in my country and the world. Buildings are large energy consumers. How to implement building energy conservation, reduce energy consumption and environmental pollution, and improve energy utilization is a major issue that must be studied and solved for my country's sustainable development. Efficient and clean solar energy has attracted widespread attention from people. Solar energy has the advantages of being clean and environmentally friendly, rich in resources, and sufficient energy supply. . For example, phase-change materials are used in the building envelope to absorb and store the solar radiation heat energy entering the room during the day by using the envelope structure to prevent the room temperature from being too hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02C04B14/06C04B24/32C04B24/02C04B22/06C04B24/00
CPCC04B20/1066C04B28/02C04B40/0039C04B2103/0071C04B24/00C04B24/02C04B24/32C04B22/06C04B14/06
Inventor 周卫兵宋旗旗李儒光朱教群程晓敏
Owner SUZHOU PORCELAIN INSULATOR WORKS