AN ADVANCED humidifier system has been successfully flight-tested on a Qantas Boeing 747-400 during long-haul operations, and systems are now being fitted to Boeing 767s and Airbus A340s, as well as several large business jets.

The Humispace humidifier, developed jointly by French-based Le Bozec Filtration and Systems and Air Data of Canada, is based around a microprocessor-controlled steam-generator unit. Electrodes immersed in water produce steam, which is fed to an atomiser cone in the aircraft air-duct mixer and fed to the cabin.

Temperature and humidity sensors in the duct regulate the required vapour quantity by sending signals to the microprocessor, which controls the level of water in the boiler. Maximum vapour rate is 4.2kg/h using 3.6kW power.


Source: Flight International