Sunlight greenhouse capable of accumulating heat by phase-change materials

Abstract

The invention discloses a sunlight greenhouse capable of accumulating heat by phase-change materials. The sunlight greenhouse comprises a wall body, wherein a plurality of arched beam frames are arranged at one side of the wall body; an insulating layer is paved on the upper sides of each of the plurality of the beam frames; a sealed greenhouse is formed among the wall body, the beam frames and the ground; the plurality of the beam frames are supported on the ground through a plurality of vertical pillars; both the beam frames and the vertical pillars are pipe fittings, and are internally filled with phase-change material compounds which are capable of regulating the temperature in the greenhouse therein; the phase-change material compounds are at 31-32 DEG C while changing from a solid phase to a liquid phase, and are at 21-24 DEGC while changing from a liquid phase to a solid phase; and sponges for adsorbing the phase-change material compounds are respectively arranged in the beam frames and the vertical pillars. Due to adoption of the technical scheme, the sunlight greenhouse has the advantages of facilitating improvement of the nocturnal temperature effect of the greenhouse, not influencing normal daytime temperature rise speed and nocturnal temperature drop rhythm of the greenhouse, improving the land utilization rate to be up to more than 60 percent, reducing the using amount of heat insulation materials, improving the usability of the greenhouse and reducing the management cost.

Description

technical field [0001] The invention relates to an agricultural solar greenhouse, in particular to a solar greenhouse using phase change materials for heat storage. [0002] solar greenhouse. Background technique [0003] The heat preservation of agricultural solar greenhouse is one of its most important performances. It includes two factors: one is the internal heat that can be released, and the other is the heat preservation capacity of the heat preservation material. The comprehensive effect of these two aspects should be Meet the temperature requirements of the crops in the greenhouse under the maximum temperature difference at night in the area where the greenhouse is located. [0004] At present, there are many researches and improvements on thermal insulation materials, and the materials and combinations of materials used are more diverse. However, the research on heat storage is only limited to how to apply soil and water, and the application is limited to soil and ...

AI Technical Summary

Problems solved by technology

[0005] In terms of soil utilization, people continue to increase the thickness and height of the wall to increase the volume of the heat storage body, thereby increasing the heat storage capacity. However, the high earth wall has greater shade, which makes the existing solar greenhouse The land use rate is less than 50%

After the existing phase change materials are placed in the greenhouse, materials with a lower phase transition temperature of about 20°C will absorb a large amount of heat when the temperature is lower, and delay the temperature rise of the greenhouse; ℃, the greenhouse will maintain a relatively high temperature during the heat release period, and the temperature will drop rapidly after the heat is released, which is difficult to control

Images