A fly ash composite phase change material wall and a solar greenhouse with it

Abstract

The invention discloses a fly ash composite phase change material wall and a solar greenhouse with the same. The composite phase change material wall includes an inner wall, an outer wall and a phase between the inner wall and the outer wall. In the layer of change material, a thermal insulation wall can be arranged between the inner wall and the layer of phase change material; the layer of phase change material includes fly ash, inorganic phase change heat storage material and organic phase change heat storage material. The solar greenhouse is composed of an indoor floor, a foam cement cold-retaining wall, a fly ash composite phase change material wall, an insulation layer, a low wall on the sunny side, a roof layer and a basic insulation wall. The solar greenhouse has excellent thermal insulation performance and storage capacity. The thermal effect is good.

Description

technical field [0001] The invention relates to the technical field of wall materials, in particular to a fly ash composite phase change material wall and a solar greenhouse with the same. Background technique [0002] Fly ash solid waste treatment has always been a difficult problem encountered in my country's industrial development. The production of fly ash in my country is very large. If it is not treated effectively, it will cause great harm to the environment. The heavily polluted smog and haze weather in recent years has also caused great harm to the environment. Fly ash has a great relationship. Although fly ash is a kind of pollutant, after secondary production, the treated fly ash can be widely used in road engineering, urban construction, ecological backfill, agriculture and other fields. As a bulk solid waste, the treatment and disposal of fly ash has been highly valued by countries all over the world. The United States, Japan, India, and the European Union have ...

AI Technical Summary

Problems solved by technology

In order to play the role of heat preservation and heat storage, usually the thickness of the earth wall in the north must reach more than four meters, and even nearly ten meters thick, resulting in a large amount of cultivated land occupied by the thick earth wall that cannot be reused, and takes up a lot of soil and other resources

In addition, even if the solar greenhouse with thick earth walls is still unsatisfactory, especially at night, additional heating is required to increase the temperature inside the greenhouse. Coal stoves are usually used when field electricity and natural gas are inconvenient. The price of natural gas and electric heating is too high , to supplement the dissipation of heat in the greenhouse, which also consumes a lot of fuel and resources, and greatly increases the cost of agriculture; while heating with coal furnaces is serious in pollution, does not conform to the national environmental protection industry policy, and consumes a lot of coal resources

For organic thermal insulation materials such as polystyrene boards and polyurethane foam boards to replace thick earth walls, although polystyrene boards and polyurethane foam boards have excellent thermal resistance and excellent thermal insulation performance, the heat storage coefficient of these materials is very low , can hardly store and store heat, and the effect is very unsatisfactory

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