Overall glass greenhouse solution

Provide integrated solutions for glass greenhouses, from design to completion

Keyword:

Advisory hotline: +86-22-68287199

Classification:

Glass greenhouse accessories

Technical documentation:

chenwei@tkoisteel.com

Consulting

Details Introduction

Greenhouse Structure Design
• Main Structure: Generally uses hot-dip galvanized steel pipes, aluminum alloy profiles, etc. Hot-dip galvanized steel pipes have good corrosion resistance and strength, capable of withstanding the weight of the greenhouse and external wind and snow loads. Aluminum alloy profiles are often used for greenhouse doors, windows, and frames, offering advantages such as aesthetics, lightness, and corrosion resistance.

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• Covering Material: Commonly uses double-layer hollow glass. For example, a configuration of 5mm tempered glass + 12mm argon gas filling layer + 5mm Low-E coated glass, with visible light transmittance reaching 85% and far-infrared reflectance >90%, effectively providing insulation and heat preservation while maintaining high light transmission to provide sufficient sunlight for crops.

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Environmental Control System
• Temperature Control:
◦ Heating System: In cold northern regions, a geothermal heat pump system can be used, exchanging heat with the soil through vertical buried pipes to provide heat for the greenhouse. For example, in Qianhe Agricultural Technology's solution, the vertical buried pipes are 100m deep, with a single well providing 45kW of heat, sufficient to meet the heating needs of a 1000㎡ greenhouse.

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◦ Cooling System: Common systems include evaporative cooling systems using wet curtains and fans, lowering the temperature of air entering the greenhouse through water evaporation on the wet curtain surface; this can also be combined with top-mounted electric skylights and sidewall vents to enhance ventilation and heat dissipation during summer high temperatures.
• Humidity Control: Install humidity sensors to monitor greenhouse humidity in real-time. When humidity is too high, use the ventilation system to exhaust moisture; when humidity is too low, use spray devices or ground watering to increase humidity.
• Light Regulation:
◦ Shading System: Includes inner and outer shading nets. Based on light intensity and crop needs, the shading net's deployment can be adjusted via an electric control system to prevent strong light from harming crops and reduce greenhouse temperature.
◦ Supplemental Lighting System: Use LED supplemental lighting to provide 400-700nm full-spectrum light. The photosynthetic photon flux density can be adjusted according to the crop's growth stage. For example, supplemental lighting can be provided on cloudy days or during seasons with insufficient sunlight to promote photosynthesis.

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Irrigation and Fertilization System
• Irrigation System: Uses water-saving irrigation methods such as drip irrigation and spray irrigation. Water is precisely delivered to the crop root zone through emitters or sprinklers near the crop roots, reducing water waste. An automated irrigation controller is also equipped, automatically controlling irrigation time and water volume based on feedback from soil moisture sensors.
• Fertilization System: Combined with the irrigation system to form an integrated water and fertilizer system. Fertilizer solution is injected into the irrigation water at a set ratio via a fertilizer pump for precise fertilization. After mixing and filtering, the fertilizer solution is evenly delivered to the crop roots, improving fertilizer utilization.
Intelligent Control System
Utilizes sensors, wireless communication, the Internet of Things, automated control, and big data analysis to monitor and control greenhouse environmental parameters in real-time.

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• Data Acquisition: Various sensors distributed throughout the greenhouse, such as temperature sensors, humidity sensors, light sensors, and soil nutrient sensors, collect environmental data in real-time and transmit it to the management platform.

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• Intelligent Decision-Making: Based on preset crop growth environmental parameter thresholds and data collected by sensors, the management platform analyzes and makes decisions, automatically controlling equipment such as ventilation equipment, shading equipment, irrigation equipment, and heating equipment, ensuring the greenhouse environment remains optimal for crop growth.

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• Remote Monitoring: Supports remote login to the management platform via Android/iOS mobile phones and computers, enabling remote monitoring and operation of the greenhouse, allowing managers to grasp the greenhouse's operating status and perform remote control anytime, anywhere.

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Supporting Facilities
• Planting Facilities: Depending on the crop, planting troughs, planting racks, etc., can be selected. For example, for soilless cultivation, rock wool planting troughs and hydroponic planting racks can be used; for soil cultivation, standardized planting beds can be used.
• Ventilation Facilities: Top-mounted electric skylights and sidewall vents work together to form a good ventilation system. In winter, a small amount of ventilation and air exchange can be achieved, while in summer, ventilation can be increased to adjust air circulation in the greenhouse, keeping the air fresh and reducing the incidence of pests and diseases.

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• Operational Passages and Equipment: Reasonable operational passages are set up to facilitate personnel and equipment operation and management within the greenhouse. Necessary agricultural machinery, such as small tractors, transplanting machines, and harvesting machines, are also equipped to improve labor efficiency.