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The greenhouse external shading system is an exceptionally efficient physical temperature control and light regulation solution for modern protected agriculture. Installed on the exterior of the greenhouse roof, this system utilizes a robust steel framework to suspend high-density shading nets directly above the greenhouse.
Its core mechanism is to intercept and reflect solar radiation before it penetrates greenhouse covering materials (such as films, glass, or polycarbonate sheets), thereby eliminating the heat source from its root. By flexibly adjusting the intensity of sunlight entering the greenhouse, this system not only effectively prevents crops from sunscald but also significantly improves the internal microclimate.
Why Install a Greenhouse External Shading System?
When operating industrial greenhouses in regions with high solar radiation and continuous high temperatures, relying solely on indoor cooling solutions (such as cooling pads and exhaust fans) is far from sufficient. An external shading system can drastically decrease the thermal load inside the greenhouse.
Core Advantages
Significant Cooling: Lowers the indoor temperature by 4°C to 8°C compared to unprotected greenhouses.
Energy & Resource Savings: Operates in perfect synergy with indoor cooling pads and exhaust fans to reduce water and power consumption by up to 30%.
Crop Protection: Effectively prevents intense ultraviolet (UV) rays from causing leaf burn and fruit sunscald.
Technical Specifications & Data Standards
Function / Core Components
Technical Specifications / Standards
Steel Framework Material
Hot-dip galvanized steel (Service life ≥ 15 years)
Shading Net Material
Premium round-wire HDPE / Optional aluminum foil shading net
UV Resistance Performance
Promised 5-year UV stability guarantee
Wind Load Capacity
Can withstand grade 11 to 12 winds (wind speed: 28.5 to 32.6 m/s) when fully retracted/bundled
Motor Drive Voltage (Motorized)
380V / 220V (Can be customized to match your local industrial power grid)
System Components
A complete, premium-grade external shading system is precisely engineered from four core modules to guarantee maximum structural wind resistance and seamless mechanical performance:
1. Framework System
An independent external truss consisting of columns, crossbeams, longitudinal beams, and diagonal bracing. The entire structure is fabricated from hot-dip galvanized steel, erected directly above the greenhouse to provide stable load-bearing support for the shading net and drive mechanisms. It delivers an operational lifespan of over 15 years.
2. Drive & Power System
Power Source: Driven by either a heavy-duty, fully enclosed greenhouse-specific reduction motor (Motorized Model) or a manual roll-up unit (Manual Model).
Drive Shaft & Linkages: Utilizes a hot-dip galvanized drive shaft, A-type rack and pinion gear systems (or heavy-duty chain drives), and pushrods to distribute power smoothly and uniformly across every square meter of the shading curtain.
3. Shading Net & Support Wires
Shading Net: Woven from premium round-wire HDPE (High-Density Polyethylene) or aluminum foil knitted curtains, delivering high tensile strength and tear resistance.
Support System: High-strength galvanized steel wires or stainless steel support/press wires are woven in a cross-grid pattern to prevent the shading net from flapping violently or sagging in strong winds.
4. Control & Limit System
Includes limit switches (ensuring the curtain stops automatically and precisely at pre-set positions), net-blocking lines, and wind-resistant press bars to guarantee safe and stable operation under severe weather conditions.
Three Architectural Configurations to Suit Every Project
To satisfy diverse agricultural requirements and investment budgets, our external shading systems are available in three configurations:
1. Fixed External Shading System
Best For: Large-scale modern agricultural parks with year-round intense sunlight seeking ultimate cost-effectiveness.
Structural Design: The shading net is permanently tensioned onto the external steel framework using high-strength fasteners and cannot be retracted.
Key Features: Simplest mechanical structure, zero maintenance costs, zero operational labor, and outstanding wind resistance stability.
Shading Rate Options: 20% to 95% (Custom-tailored according to the specific light requirements of crops such as tomatoes, lettuce, or premium floriculture).
2. Manual Roll-up Shading System
Best For: Small-to-medium-sized greenhouses and growers heavily focused on initial investment costs.
Structural Design: Utilizes a heavy-duty manual roll-up mechanism to drive the transmission shaft, enabling flexible deployment and retraction of the shading net.
Key Features: Flexible light control with zero electricity consumption required. It serves as the ideal choice for remote, off-grid, or power-unstable agricultural projects.
Operational Experience: Smooth and effortless rotation allows a single operator to manage the shading system of an entire greenhouse with ease.
3. Motorized Automatic Shading System
Best For: Large-scale modern commercial greenhouses and high-tech digital agricultural facilities.
Structural Design: Powered by a high-torque, greenhouse-specific gear reduction motor integrated with a high-precision A-type rack and pinion system.
Automation Capabilities: Can be programmed to deploy or retract automatically based on real-time solar radiation intensity, indoor temperature thresholds, or pre-set schedules, achieving unmanned, smart environment management.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Trading Company
Year Established:
2004
Total Annual:
3000000-3500000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
IGreen has been dedicated to the research, development, and production of modern agricultural systems, including greenhouse facilities, hydroponics systems, recirculating aquaculture systems (RAS), and aquaponics systems. Now we are a provider of one-stop solutions for agricultural planting, aquacul... IGreen has been dedicated to the research, development, and production of modern agricultural systems, including greenhouse facilities, hydroponics systems, recirculating aquaculture systems (RAS), and aquaponics systems. Now we are a provider of one-stop solutions for agricultural planting, aquacul...
