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= Ventilation Calculation =
== Summary == Ventilation is required to replenish oxygen removed by people and sources of combustion, and to dilute odours and pollutants. The most effective method is an integrated HVAC system with air distribution and local controls in each cabin. But without pass-throughs for air ducts an integrated ventilation/humidification system is impossible. A water system for distribution minimises the scope of pass-throughs in water-tight bulkheads but like many design decisions it forces trade-offs and the use of local ventilation.
== Method ==
If you plan to spend your time in hot humid climates, you should consider a solution that incorporates a dehumidifier.
=== Ventilation Rates ===
Ventilation rates can be expressed in several ways:
Maximum air velocity in ventilation ducts and vents should not exceed 2.6-3.3 ft/s (feet/second) (0.8-1.0 m/s) to minimise noise and differentials in air pressure. In comparison, air ducts for combustion systems can run as high as 40-66 ft/s (12-20 m/s).
=== Working an Example ===
Let’s work a complete example. Assume a salon of 1280 cubic feet. At 1.0 ACH this requires 21.3 CFM: