1. Total Internal Heat Dissipation (Watts):

2. Max Allowed Internal Temp (°C):

3. Max Ambient Air Temp (°C):

4. Effective Enclosure Area A (m²) - Optional:

Cooling Requirements:

Temperature Difference (ΔT): 0 °C

Required Airflow (Fan Rating): 0 m³/h (0 CFM)

1. Forced Air Volume Flow (V): V (m³/h) = (3.1 × P_net) / ΔT

• ΔT = T_internal - T_ambient
• P_net = Net heat load requiring fan cooling (Watts).
• 3.1 = Physical constant based on air heat capacity (c_p) & air density (ρ) at sea level.
• A +20% safety margin is added to compensate for filter mat pressure drop.

2. Natural Surface Heat Radiation (Optional): P_radiation = k × A × ΔT

• k ≈ 5.5 W/(m²·K) for painted sheet steel enclosures.
• A = Effective enclosure surface area exposed to ambient air.

* Note: If T_ambient ≥ T_internal, fan cooling is physically impossible. An active Enclosure Air Conditioner (AC Unit) must be specified instead.