Chongqing Qingcheng Agricultural Science and Technology Co., Ltd
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Automatic Agricultural Large Size Multi-Span Glass Greenhouse with Shading System

Automatic Agricultural Large Size Multi-Span Glass Greenhouse with Shading System

The purpose of glass greenhouse ventilation is to remove the waste heat and moisture in the greenhouse, adjust the air composition in the greenhouse, and eliminate harmful gases, so that the ambient temperature, humidity and air conditions in the greenhouse are suitable for plant growth.

  • Description

    Thanks to our rich experience and excellent production technology, we are confident that our Double Layer Poly Greenhouse, Mini Greenhouse For Indoor Plants, Victorian Glass Venlo Type Greenhouse can win the trust of our customers. We appreciate mutual trust, win-win cooperation, open and inclusive organizational capabilities. Our company can effectively reduce inventory, improve operational efficiency and responsiveness to the market and have a profound impact on the entire enterprise management. We have provided reliable products and quality services to many countries and regions, and have established a good reputation and brand image in the global market. In order to ensure the quality of products, we adopt international safety standards and technologies to continuously improve and perfect the product performance.

    Production intruduction


    Multi-span glass greenhouses are an excellent addition to agricultural environments.

    The structure's ability to create the perfect environment for plant growth is a marvel of modern technology.


    The biggest advantage of multi-span glass greenhouses is that they can accurately control the internal environment of the greenhouse.

    Since the greenhouse is equipped with a heating system, cooling system, humidification system and automatic irrigation system, 

    it can provide a perfect growing environment for any planThis means farmers can grow a variety of different plants in greenhouses, from exotic flowers to high-yielding vegetable crops.


    Another significant advantage of a multi-span glass greenhouse is its durability. Unlike traditional wood or plastic greenhouses, the structure of a multi-span glass greenhouse is made of high-quality glass and can withstand harsh weather conditions, including heavy rain, strong winds, and freezing temperatures. Farmers don’t have to worry about their crops being damaged by the weather.


    Glass greenhouse ventilation


    The purpose of Multi Span Glass Greenhouse ventilation is to remove the waste heat and moisture in the greenhouse, adjust the air composition in the greenhouse, and eliminate harmful gases, so that the ambient temperature, humidity and air conditions in the greenhouse are suitable for plant growth.

    1. Natural ventilation: Most of the time, the glass greenhouse relies on natural ventilation to adjust the indoor environment. The structure of large-scale production glass greenhouses is generally a double-slope multi-span greenhouse, and the ventilation method is to set up ventilation windows on the side walls and roof ridges. The total area of ventilation is not less than 15% of the greenhouse area, preferably more than 30%. When the roof ridge window is opened, the window sash should preferably be inclined upward beyond the horizontal plane. When it is fully opened, it forms an angle of 100 with the horizontal plane to obtain a good ventilation effect. The amount of natural ventilation is related to wind speed, wind direction, position of ventilating window, area of ventilating window and temperature difference between inside and outside the greenhouse. When the total area of the ventilating windows is 27% of the indoor floor area, if only the ridge is ventilated, even if the outdoor wind speed reaches 10 km/h, the ideal air exchange rate of 0.75 times per minute will not be achieved; when the ridge ventilating windows and side walls When the ventilation windows are fully opened, the air exchange rate can reach 0.68 times/minute under almost no wind, which is close to the normal recommended air exchange rate of 0.75 times/minute.

    2. Although the forced ventilation glass greenhouse relies on natural ventilation to adjust the environment most of the time, when the temperature in summer is high, especially when the outdoor temperature exceeds 33℃ in hot weather, it is difficult to meet the cooling requirements of the greenhouse by natural ventilation alone. And cooperating with other measures to cool down is a common method in production. Forced ventilation is the use of fans to convert electrical or other mechanical energy into wind energy, forcing air to flow to ventilate the greenhouse and achieve a cooling effect. The theoretical cooling limit of forced ventilation is that the indoor air temperature is equal to the outdoor air temperature. Because, at this time, the temperature difference between inside and outside the greenhouse is zero, and the ventilation is infinite, which is impossible in practical applications. Due to the physiological reasons of mechanical equipment and plants, the ventilation intensity of the general greenhouse is 0.75 air changes per minute to 1. 5 times, the temperature difference between inside and outside the greenhouse can be controlled within 5℃.

    Glass greenhouse heating

    Certificate honor

    Product packing

    Standard exporting packing


    FAQ

    Q:Are you manufacturer?

    A:Yes, we are manufacturer factory located in Chongqing. Most welcome to visit!

    Q:What is your lead time?

    A:Within 30 days after receive your deposit

    Q:What are your payment terms?

    A: 70% down payment against commercial invoice, 30% payment upon notification ready for shipment. T/T ,Paypal, Bank transfer all acceptable. Can be negociated.

    We always adhere to the market-oriented, customer-focused focus, and focus on Automatic Agricultural Large Size Multi-Span Glass Greenhouse with Shading System and technological innovation. We strive to achieve effective integration of resources on a global scale with our own creations and actions, seeking a larger stage and resources to maintain better growth and development. We correctly guide and constantly encourage members to establish a good personal culture and maintain convergence with the organizational culture, that is, values, sense of mission and development direction to maintain convergence, to maximize the value and contribution, so as to seek mutual benefit and common development.

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