Solid composite phase-change thermal storage material and preparation method thereof

A phase change heat storage material and heat storage material technology, applied in the field of solid composite phase change heat storage material and its preparation, can solve the problems of production process pollution, low heat storage density, easy pulverization, etc., to improve heat storage capacity , High heat storage density, energy saving effect

Inactive Publication Date: 2017-05-24
BEIJING SONDEX ENERGY TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the existing solid heat storage materials are replaced by magnesia bricks or magnesia-iron composite refractory bricks produced from magnesia or iron ore, which have low mass heat storage density, low temperature resistance, and are easy to pulverize after long-term use, and the production process is seriously polluted. Its use is largely limited
Therefore, the study of solid composite phase change materials can overcome the problems of low heat storage per unit weight of traditional solid heat storage materials (refractory bricks) and easy pulverization after long-term use, and the composite phase change material heat storage materials that meet the requirements of waste heat storage at all levels will be It is a promising development direction and a challenging research topic

Method used

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  • Solid composite phase-change thermal storage material and preparation method thereof

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with accompanying drawing:

[0032] Prepare samples:

[0033] 1) Stirring: Weigh 43.15 parts of sodium carbonate and 8.65 parts of potassium carbonate respectively and put them into the mixer for the first stirring, then add 37.25 parts of magnesium oxide, 7.3 parts of diatomite, 2.65 parts of quartz sand, 1 part of The kaolin is stirred for the second time, and then the water added by spraying is carried out for the third time;

[0034] 2) Sand rubbing and filtering: put the material obtained in step 1) directly into the swinging granulator, rub all the materials in the swinging granulator and filter;

[0035]3) hydroforming: put the material obtained in step 2) into a mold for hydroforming;

[0036] 4) Sintering and forming: the sample can be prepared by sintering the hydroforming material in step 3).

[0037] In step (1), the rotating speed of stirrer is 30r / min when stirring for the first time, ...

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Abstract

The invention discloses a solid composite phase-change thermal storage material, belonging to the technical field of energy storage materials. The solid composite phase-change thermal storage material comprises water, sodium carbonate, potassium carbonate, magnesium oxide, kieselguhr, quartz sand and kaolin. The thermal storage material is non-toxic, harmless and free of pollution. The invention further discloses a preparation method of the solid composite phase-change thermal storage material. The preparation method comprises the following steps: stirring, rubbing sand, filtering, performing hydraulic molding, and performing sintering molding. By adopting the preparation method, the thermal storage density is improved, the thermal storage density of the material is 2 times better than that of a common material, the thermal storage material can endure high temperature, can be heated to be greater than 650 DEG C, and is not liable to efflorescence when being used for a long time.

Description

technical field [0001] The invention belongs to the technical field of energy storage materials, and in particular relates to a solid composite phase change heat storage material and a preparation method thereof. Background technique [0002] With the increasingly prominent problems of energy shortage and environmental pollution, people pay more and more attention to the utilization of new energy and the improvement of energy utilization. Energy storage technology, as an important method to solve the energy supply-demand imbalance problem, is favored by domestic and foreign enterprises and related research institutions. Among them, thermal energy storage based on phase change energy storage materials is one of the most widely used energy storage technologies. [0003] Phase change energy storage, also known as latent heat energy storage, is a material that uses phase change latent heat to store energy at a constant temperature. The heat storage / discharge is carried out by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06
CPCC09K5/063
Inventor 吴军李财
Owner BEIJING SONDEX ENERGY TECH
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