Solar internal shading system for greenhouse

Abstract

The invention discloses a solar internal shading system for a greenhouse. PVT modules (1) are fixed to a support (2) through rotating shafts (3), the end parts of the rotating shafts (3) are provided with gears (5), chains (7) in the support (2) are controlled to move through motors (4), and the gears (5) rotate to open or close the PVT modules (1). In solar photo-thermal utilization, cold water enters an array formed by the PVT modules (1) through a cold water inlet pipe (8) in the support (2), absorbs solar radiant heat and then water enters a hot water outlet pipe (10), hot water is stored in a heat preservation water tank (19), a stop valve (11), a gate valve (12), a handle butterfly valve (13), a Y-shaped filter (14), a temperature sensor (15), a pressure gauge (16), a flow meter (17), a water pump (20) and a check valve (21) are arranged on a medium flow channel of the support (2), and the heat preservation water tank (19) controls tap water supplementing through a floating ball valve (18).

Description

technical field [0001] The invention relates to a greenhouse technology, in particular to a solar inner shading technology for a greenhouse. Background technique [0002] The traditional solar greenhouse shading device has a single function, cannot be flexibly controlled according to the indoor temperature and humidity, is difficult to adjust timely and accurately, and consumes a lot of energy and water in the greenhouse. In solar greenhouses, solar photovoltaic power generation, photothermal technology applications and shading devices are mostly independently designed and operated separately, resulting in scattered control systems for greenhouse facilities and high comprehensive operation and maintenance costs for greenhouses. Existing solar greenhouses usually choose nets / curtains with different shading ratios according to the crops to achieve shading. The inner shading system is only controlled by a single time, light intensity, temperature parameter or combination of par...

AI Technical Summary

Problems solved by technology

[0008] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention effectively solves the problem of decentralized control systems of greenhouse facilities in solar greenhouses due to the independent design and separate operation of solar photovoltaic power generation, photothermal technology applications, and shading devices. , the problem of high comprehensive operation and maintenance costs of greenhouses

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