Overview
The Daylighting and Smoke Exhaust Skylight is a multifunctional building solution that addresses three critical needs: natural illumination, smoke ventilation during fires, and regular air circulation. Primarily installed on industrial facility roofs, these systems combine translucent panels with operable venting mechanisms. Modern versions often integrate with building automation systems, automatically opening during smoke detection while maintaining weatherproofing. They are mandatory in many jurisdictions for large-span structures where traditional windows are impractical.
Structure and Working Principle
Standard units consist of a reinforced frame (usually aluminum alloy) supporting impact-resistant glazing (polycarbonate or tempered glass). The venting mechanism may use hydraulic struts, electric actuators, or manual pulleys, with fire-rated fusible links for emergency operation. During normal operation, fixed panels provide daylight penetration. In smoke exhaust mode, actuators open panels to 30-70° angles, creating thermal buoyancy vents. Fire-rated models maintain structural integrity at high temperatures, preventing flame spread while allowing smoke escape.
Key Features
1) Triple functionality reduces separate installation costs 2) UV-stabilized materials prevent yellowing/degradation 3) Customizable sizes (commonly 1m×1m to 3m×6m) 4) Optional rain sensors and wind-resistant designs High-performance models feature double-glazed units with low-E coatings for thermal insulation, while maintaining the required smoke vent area per international standards like EN 12101-2.
Application Areas
Warehouses and logistics centers benefit from reduced lighting costs while meeting fire regulations. Manufacturing plants utilize them for both worker safety and process heat dissipation. Sports complexes and atriums employ architecturally integrated versions. Recent applications include photovoltaic-integrated models that combine solar power generation with daylighting functions, though smoke venting capacity must be carefully calculated in these hybrid systems.
Maintenance and Precautions
Quarterly inspections should verify: 1) unobstructed venting paths, 2) actuator functionality, 3) sealant integrity. Lubricate moving parts annually with high-temperature grease. Critical precautions include ensuring structural support for wind loads (especially for large units) and maintaining minimum 1m clearance from rooftop equipment. Never paint over fusible links or obstruct interior smoke plume reach to the units.
B2B Procurement Guide
Specify: 1) Required fire rating (typically 30-120 minutes), 2) Wind load capacity (per local codes), 3) Automation interface needs (BACnet, Modbus etc.). Lead times range 4-12 weeks for custom sizes. Bulk orders (50+ units) often qualify for 10-15% discounts. Consider total cost of ownership - premium motors reduce maintenance costs long-term. Always request third-party test reports for fire performance claims.
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