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Preparation method of concrete heat accumulator and concrete heat accumulation block without metal heat exchange pipeline

A technology of heat exchange pipes and concrete, which is applied in the direction of heat storage equipment, heat exchanger types, indirect heat exchangers, etc., can solve the problems of high operating cost, high material cost, complex structure, etc., to reduce costs and improve heat transfer The effect of efficiency and great application prospect

Inactive Publication Date: 2016-02-10
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Although the above literature has conducted systematic research on the heat accumulator, there are certain deficiencies, mainly in the complex structure, the use of metal heat exchange pipes, not only in the high cost of materials, but also in the corrosion of metal pipes during use It leads to the replacement of pipelines, which causes problems such as high operating costs, which leads to the high cost of the heat accumulator and seriously affects its application in engineering practice.

Method used

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  • Preparation method of concrete heat accumulator and concrete heat accumulation block without metal heat exchange pipeline
  • Preparation method of concrete heat accumulator and concrete heat accumulation block without metal heat exchange pipeline
  • Preparation method of concrete heat accumulator and concrete heat accumulation block without metal heat exchange pipeline

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Embodiment 1

[0031] Such as Figure 1 to Figure 5 As shown, it is the concrete heat accumulator without metal heat exchange pipes provided in Embodiment 1 of the present invention, which is arranged in the vertical direction by a plurality of heat storage units, and each heat storage unit includes a plurality of concrete heat storage units arranged in the horizontal direction Heat storage blocks 2, each concrete heat storage block 2 includes a heat storage block body and an inorganic sealing coating 7, the heat storage block body is provided with a heat exchange flow channel 5, and the exchange of two adjacent heat storage block bodies The hot runners 5 communicate with each other. The inorganic sealing coating 7 is arranged on the outer wall of the heat exchange channel 5 . The concrete heat accumulator also includes a valve 1 , an external thermal insulation layer 3 and an external heat medium circulation pipe 4 . The external thermal insulation layer 3 is arranged on the periphery of ...

Embodiment 2

[0040] The structure of the concrete heat accumulator without metal heat exchange pipes in this embodiment is roughly the same as that in Embodiment 1, except that the weight ratio of the material composition of the heat storage block body and the inorganic sealing coating is different, specifically:

[0041] The weight ratio and particle size of the material composition of the heat storage block body are: 40% coke gemstone, particle size 5-20mm; steel slag 20%, particle size 5-10mm; bauxite clinker 20%, particle size 1-5mm; 300 mesh alumina Salt cement 5%; 500 mesh silica powder 7%; 300 mesh activated alumina powder 3%, 300 mesh silicon carbide powder 5%; plus 0.7% composite water reducing agent.

[0042] The weight ratio and particle size of the material composition of the inorganic sealing coating are: 200 mesh active magnesium oxide powder mass fraction is 5%, 200 mesh barium oxide powder mass fraction is 45%, 200 mesh boric anhydride is 8%, 200 mesh aluminum oxide Powder ...

Embodiment 3

[0045] The structure of the concrete heat accumulator without metal heat exchange pipes in this embodiment is roughly the same as that in Embodiment 1, except that the weight ratio of the material composition of the heat storage block body and the inorganic sealing coating is different, specifically:

[0046] The weight ratio and particle size of the material composition of the heat storage block body are: 20% forsterite, particle size 5-20mm; copper slag 30%, particle size 5-10mm; bauxite clinker aggregate 34%, particle size 1-5mm ; 300 mesh aluminate cement 5%; 500 mesh silica powder 3%; 300 mesh activated alumina powder 3%, 300 mesh silicon carbide powder 5%; plus 0.5% composite water reducing agent.

[0047] The weight ratio and particle size of the material composition of the inorganic sealing coating are: 200 mesh active magnesium oxide powder mass fraction is 5%, 200 mesh barium oxide powder mass fraction is 50%, 200 mesh boric anhydride is 5%, 200 mesh aluminum oxide P...

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Abstract

The invention provides a preparation method of a concrete heat accumulator and a concrete heat accumulation block without a metal heat exchange pipeline. The heat accumulator is formed by arranging a plurality of heat accumulation units in the vertical direction. Each heat accumulation unit comprises a plurality of concrete heat accumulation blocks arranged in the horizontal direction. Each concrete heat accumulation block comprises a heat accumulation block body and an inorganic hole sealing coating. A heat exchange flow channel is arranged in each heat accumulation block body. The heat exchange flow channels of every two adjacent heat accumulation block bodies are communicated. The inorganic hole sealing coatings are arranged on the outer walls of the heat exchange flow channels. Each inorganic hole sealing coating is formed by active magnesium oxide powder, barium oxide, boron anhydride, alumina and silicon powder in a mixed coating mode. Each heat accumulation block body is formed by aluminate cement, silicon powder, silicon carbide powder, activated alumina powder, bauxite powder, flint clay or forsterite, and copper slag or steel slag in a demoulding curing mode. The metal-pipeline-free heat exchange structure is adopted for the concrete heat accumulator, the corrosive problem of metal pipelines is thoroughly solved, cost is low, and heat exchange efficiency is high.

Description

technical field [0001] The invention relates to the field of energy storage materials, in particular to a concrete heat accumulator for medium-temperature use in the industrial field without metal heat exchange pipes and a method for preparing a concrete heat storage block. Background technique [0002] Energy is the source of energy for human beings to maintain their survival activities. At present, the energy consumed in my country mainly comes from non-renewable mineral energy such as coal, oil, and natural gas. With the development of society, the human demand for energy is increasing. At present, the commonly used energy mainly comes from fossil raw materials. Extensive use of fossil energy not only affects the sustainable development of society, but also brings serious environmental pollution problems. Reducing energy consumption and improving energy utilization efficiency are of great practical significance to the sustainable development of society. [0003] At pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/00C09K5/12
CPCF28D20/0056Y02E60/14
Inventor 周卫兵朱教群李儒光程晓敏李元元原郭丰唐文学
Owner WUHAN UNIV OF TECH
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