Sunlight greenhouse solar photovoltaic power generation utilization device and method

Abstract

The invention discloses a sunlight greenhouse solar photovoltaic power generation utilization device and method. A plurality of pieces of solar photovoltaic power generation glass or films parallel to the vertical surface of a back vertical wall of a greenhouse realize the arrangement at intervals through positioning clamps and are fixedly connected with a fixing framework, the front and back span of the greenhouse, the height of the vertical surface of the back vertical wall of the greenhouse, the left and right house total width of the greenhouse, the average heat absorption factor of the back vertical wall and the distance from the solar photovoltaic power generation glass or films to the vertical surface of the back vertical wall of the greenhouse are determined; then, the solar photovoltaic power generation glass or films are selected, and the distance from the solar photovoltaic power generation glass or films to the left side wall and the right side wall of the greenhouse and the height from the solar photovoltaic power generation glass or films to the ground of the greenhouse are determined; and finally, the installation number of the solar photovoltaic power generation glass or films and the space between every two pieces of solar photovoltaic power generation glass or every two solar photovoltaic power generation films are determined according to a formula. Partial solar energy irradiating to the vertical surface of the back vertical wall of the sunlight greenhouse is converted into electric energy, the solar utilization rate in unit area of the greenhouse is improved, and planted crops can be ensured to normally obtain illumination.

Description

technical field [0001] The invention relates to the technical field of solar energy utilization in greenhouses, in particular to a method and device for utilizing solar photovoltaic power generation in solar greenhouses. Background technique [0002] At present, in the northern regions of my country, especially in areas between 35° and 45° north latitude, solar greenhouses are the most important agricultural production facilities. As a commonly used greenhouse structure in northern my country, solar greenhouse has advantages but also has certain defects in the regulation of the environment in the greenhouse and the utilization of solar energy. A big difference between the existing solar greenhouse structure in our country and the ordinary single arched greenhouse is that the solar greenhouse has a rear wall specially designed to store heat. However, in the daily production process of the greenhouse, especially in sunny conditions during the day, due to the limitation of the...

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Problems solved by technology

However, in the daily production process of the greenhouse, especially in sunny conditions during the day, due to the limitation of the heat storage capacity of the construction material of the back wall of the greenhouse, it cannot absorb the solar energy irradiated on its surface without limit, so it is irradiated during the day. A large part of the solar energy on the vertical surface of the rear wall of the solar greenhouse is reflected and scattered into the external space. This part of the reflected and scattered solar energy is neither absorbed by the greenhouse heat storage device nor absorbed by the greenhouse heat storage device during the production process of the greenhouse. It does not effectively participate in the photosynthesis of plants in the greenhouse, and has not been rationally utilized

At the same time, the existence of the higher rear wall of the solar greenhouse also blocks the sunlight of the rear buildings, thus reducing the utilization rate of solar energy per unit area

The solar energy reflected and scattered to the outer space of the solar greenhouse reduces the comprehensive utilization of solar energy in the greenhouse and causes a waste of solar energy resources

[0003] Chinese patent CN201536524U introduces a multifunctional solar photovoltaic greenhouse. The multifunctional solar photovoltaic greenhouse is similar to the solar greenhouse in appearance and shape. The roof of the greenhouse is equipped with light-transmitting photovoltaic cell components, although it can realize solar energy protection to a certain extent. The comprehensive utilization of photovoltaic cell components, but the light transmission performance of photovoltaic cell components is poor. Installing photovoltaic cell Conditions are not suitable for crop growth

Although the electrical energy generated by photovoltaic cell modules can be used for artificial lighting, the energy has been converted many times and its utilization efficiency has been reduced.

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