Active light collection and heat storage type sunlight greenhouse

Abstract

The invention provides an active light collection and heat storage type sunlight greenhouse, which comprises a combined framework, a wall heat preservation material, an elevation-adjustable back roofand a solar active heat storage and release system. One side, facing a light collection roof, of the elevation-adjustable back roof is provided with a reflector. One end of the elevation-adjustable back roof is hinged to a back wall, and the elevation of the back roof is regulated by a control system to realize active light collection and secondary reflective light collection. The solar active heat storage and release system comprises a solar collector, a hot water storage tank, a water feeding pipe, a water return pipe and a submersible pump, the solar collector is positioned on the inner side of the back wall, and a heat collecting surface faces the light collection roof. The active light collection and heat storage type sunlight greenhouse has advantages that by active sunlight collection, the sunlight utilization capacity is increased; by active heat storage and release, light collection and heat preservation performances of the sunlight greenhouse can be improved, uniformity of alight environment is improved, and annual efficient production of the sunlight greenhouse is benefited.

Description

technical field [0001] The invention belongs to the technical field of facility agriculture and relates to a solar greenhouse structure, in particular to an active daylighting and heat storage type solar greenhouse. Background technique [0002] In recent years, with the continuous improvement of people's living standards and material needs, people's food safety awareness and food structure have undergone tremendous changes, and the market's demand for vegetables is increasing day by day. Facility agriculture has become a pillar industry that prospers the local economy and increases farmers' income. The solar greenhouse, which is an off-season planting place for vegetables, has also been greatly developed and improved. The solar greenhouse is a small environment for vegetable cultivation. Only when the solar greenhouse is scientifically and rationally constructed and has good environmental control capabilities can it meet the environmental conditions of vegetable growth on l...

AI Technical Summary

Problems solved by technology

These designs are conducive to the lighting and heat preservation of the greenhouse in deep winter, but in most seasons, because the back roof and heat preservation are blocked from the light in the greenhouse, the problem of uneven light in the solar greenhouse is more serious, especially the impact on the lighting of the rear crops is greater.

In cold regions, the azimuth of the greenhouse is designed to be westward. After spring, this azimuth has a great impact on the photosynthesis of greenhouse crops in the morning due to the shading of the rear roof and insulation quilt, making it difficult to increase the annual production capacity of the greenhouse.

2. The existing solar greenhouse structure is not conducive to the active heat storage of the greenhouse

At present, the rear roof of the solar greenhouse is mostly made of light-weight thermal insulation materials. The outer slope of the rear roof is relatively large. When thermal equipment needs a large amount of heat storage, shading causes a decrease in heat storage

The shading of the greenhouse wall and ground by crop growth further weakens the heat storage capacity of the greenhouse

3. The ability to comprehensively apply solar greenhouse structure innovation and control new technologies is not strong

The lack of greenhouse structure, environmental control technology and equipment efficient supporting application technology for solar greenhouses, and the lack of research on the comprehensive control of the annual production environment of solar greenhouses, resulting in a disconnection in the application of various new technologies, which cannot fully play their due role

However, the existing solar greenhouse environment efficient control mechanism and intelligent facilities are lacking, and it is still unable to fully and effectively carry out solar greenhouse light-temperature coupling regulation and efficient production, which limits the further innovation and development of solar greenhouse technology

[0004] To sum up, solar greenhouses have problems such as weak control ability, uneven distribution of ambient temperature and light, and unbalanced annual production, which are mainly caused by structural defects of existing solar greenhouses and insufficient research on effective control technologies.

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