Air quality and relative humidity in commercial aircrafts: an experimental investigation on short-haul domestic flights

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Nowadays the achievement of a comfortable environment in aircraft cabins is a factor of paramountimportance in air travel business competition; on the other hand, the need of reducing the propulsionfuel cost has driven the airline companies to adopt air handling systems that may reduce the levels ofthermal comfort and air quality inside the cabins of commercial airliners. With the aim of contributing toa better knowledge of this matter, this paper reports the results of an experimental study upon theindoor air quality aboard commercial aircrafts for 14 domestic flights less than 1 h and half long. Theparameters monitored were temperature, relative humidity and carbon dioxide concentration; themeasurements were performed during the whole flight from the take-off to the landing.The relative humidity inside the cabin was also calculated using the rates of outside air and the carbondioxide as a ventilation tracer; the theoretical results were compared with the measured data. Therelationship between relative humidity and carbon dioxide concentration during fights was highlightedin order to define the environmental conditions that may provide acceptable levels of both the air qualityand hygrometric comfort to the crew and passengers. The results of calculations confirmed the possibilityof improving the hygrometric conditions in aircraft cabins without the need of using humidificationsystems.
Lingua originaleEnglish
pagine (da-a)69-81
Numero di pagine13
RivistaBuilding and Environment
Stato di pubblicazionePublished - 2013


All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Civil and Structural Engineering
  • Geography, Planning and Development
  • Building and Construction

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