Humidity in Balance
Aircraft with no dedicated system for condensation prevention normally accumulates significant excess weight of condensation water in the fuselage resulting in unwanted extra costs for fuel and emissions.
Condensation problems occur when the outside skin of the aircraft is extremely cold and when the cabin air meets this cold surface, condensation forms as frost and ice. When the exterior of the plane warms up during landing, the frost and ice melt into water. Most of the water drains through the drainage vents of the aircraft while the plane is on the ground, but some stays in the insulation or accumulates in cavities inside the body of the aircraft.
The Zonal Drying™ System draws air from the cabin, dehumidifies the air and circulates it between the cabin and the outside skin of the aircraft. The airflow dries the insulation and reduces the relative humidity of the air that comes into contact with cold surfaces, resulting in less condensation
A typical Zonal Drying™ retrofit installation on the A320-family aircraft will already after 3-6 months reduce the weight with 150-200 kg (or approx. up to 2/3 of the total excess weight in the fuselage). After this initial period the aircraft will gradually reduce the remaining accumulated water.
Zonal Drying™ System is available for practically all Airbus and Boeing aircraft types.
The Zonal Drying™ is a pre-requisite for active cabin humidification (adding humidity). Without a system for preventing condensation the problems from water accumulation in the aircraft structures will increase dramatically.
Solving the humidity paradox – too wet aircraft and too dry passengers, is only possible by keeping and maintaining “Humidity in Balance”.