Curved Fresnel lens condensation and facility agriculture combined solar heat collecting system

Abstract

The invention provides a curved Fresnel lens condensation and facility agriculture combined solar collecting system, and belongs to the technical field of solar high temperature heat collecting and agricultural facilities. The solar heat collecting system includes curved Fresnel lenses, secondary condensers, vacuum tube receivers, a sunlight tracker, a facility agriculture greenhouse, a steel rope driving system, a heat-electricity system, and a heat storage system. According to the solar heat collecting system, positions of track slide type Fresnel condensers can be accurately controlled through an endless rope traction system and the sunlight tracker; a part of sunlight entering the outer surface of the facility agriculture greenhouse is condensed in the vacuum tube receivers arranged in special positions of the inner part of the facility agriculture greenhouse to be received; a part of sunlight which cannot be directly condensed in the vacuum tube receivers due to track errors can be reflected through the secondary condensers and then is condensed to the vacuum tube receivers to be received, and in this way, solar high-temperature heat collecting can be achieved, high temperature heat can be used for heat power generation, waste heat can be stored in soil under the greenhouse through the heat storage system, and heat can be provided for agricultural facilities.

Description

Technical field [0001] The invention relates to a solar heat collection system combining curved surface Neel lens light concentrating and facility agriculture, which utilizes the combination of integral sliding concentrator and facility agriculture greenhouse to gather sunlight at high density and realize the mutual interaction between solar energy and agricultural planting technology. Complementary use. The utility model belongs to the technical field of solar high-temperature heat collection and agricultural facilities. Background technique [0002] In the cold winter, it is difficult for passive agricultural greenhouses to rely solely on their own structure to absorb solar energy to meet the needs of plant growth, especially at night, when plants face low temperature hazards. However, heating the greenhouse with traditional energy is not only expensive, but also causes environmental pollution and waste of non-renewable resources. Therefore, the combination of solar ener...

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Problems solved by technology

In the solar energy utilization process of the greenhouse, ordinary reflective concentrators do not have the function of transmission. If they are installed on the front slope of the greenhouse, it will not only block part of the sunlight from entering the greenhouse, but also leave a huge shadow in the greenhouse, thus affecting The sunlight collection of the greenhouse; if the concentrators are installed on the back wall of the greenhouse, it will also block the rear greenhouse and affect the lighting of the rear greenhouse, thus increasing the distance between the greenhouses and causing a waste of space, so in Application of new solar concentration technology in agricultural greenhouses makes sense

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