Proper ventilation is critical for Malaysian factories and workshops to maintain worker comfort, equipment longevity, and productivity. Hot, stuffy work environments reduce efficiency and can create safety hazards. This guide covers the key principles of industrial ventilation design.

Why Ventilation Matters in Malaysian Factories

• Heat stress prevention: Malaysian ambient temperatures combined with industrial heat sources can create dangerous working conditions
• Air quality: Removes fumes, dust, and airborne contaminants from manufacturing processes
• Equipment cooling: Prevents overheating of machinery and electronics
• Energy efficiency: Reduces reliance on air conditioning, lowering operating costs

Air Changes Per Hour (ACH) Guidelines

The required ventilation rate depends on the type of factory and heat-generating activities:

Ventilation Design Principles

• Cross-ventilation: Position intake vents on prevailing wind side, exhaust on opposite side
• Stack effect: Hot air rises — place exhaust ventilation at roof level for natural updraft
• Local exhaust: Capture contaminants at source (welding, painting, grinding)
• Uniform distribution: Ensure fresh air reaches all work areas, not just near vents

Recommended Solutions for Factories

Combined System Design

For optimal factory ventilation, combine louvers and turbine ventilators:

• Install FRP louvers on sidewalls (intake) — one square meter of louver area per 20-30 square meters of floor area
• Install turbine ventilators on roof ridge (exhaust) — one unit per 100-150 square meters of floor area
• Ensure adequate opening for air to escape (minimum 80% of intake area)

Quick Calculation Example

For a 500 m² factory with moderate heat load:

• Required exhaust capacity: 500 ÷ 100 = 5 turbine ventilators (rounded up)
• Louver intake area: 500 ÷ 25 = 20 m² total opening
• Cross-check: 5 turbines + adequate louvers = effective cross-ventilation