COMPARISON OF DIFFERENT VENTILATION SYSTEMS FOR COMMERCIAL AIRCRAFT CABINS

摘要

The ventilation systems in commercial aircraft cabins are important for providing a healthy and comfortable environment for the passengers and crew. The mixing ventilation system currently used provides a uniform air temperature distribution and dilutes contaminants in the cabin. However, the mixing ventilation system could spread infectious airborne diseases such as influenza and SARS. It is therefore necessary to improve the current design of ventilation systems for aircraft cabins. By using a validated Computational Fluid Dynamics (CFD)program to simulate the cabin environment for a Boeing 767 airplane during cruise flight, this paper compares and analyzes the simulated cabin environment with mixing, under-floor displacement, and personalized ventilation systems. The results show that the personalized ventilation systems could effectively decrease the risk of spreading infectious diseases but could also create a temperature stratification.