CFD Analysis of Air Conditioning System Enhancement for Thermal Comfort Improvement in Airport Terminals During Summer

Le résumé fourni par la source

The current research examines the thermal environment and thermal comfort of a commercial zone within airport terminals under summer operating conditions through a computational fluid dynamics (CFD) analysis. The main aim of the experiment was to assess the effects of the inlet air temperature, inlet air velocity, and ventilation design on the distribution of the airflow and passenger thermal comfort based on the Chinese national standard GB/T 50785. The commercial zone was modeled as a three dimensional computational model on CATIA V5 and numerically modeled on ANSYS Fluent. The simulations used the Realizable k−ε turbulence model, the SIMPLE pressure–velocity coupling technique, and the second-order upwind discretization scheme. Different modifications in the supply air temperature and inlet airflow velocity were used to test the five cases. The findings revealed that higher inlet airflow velocity and lowering inlet air temperature greatly enhanced airflow circulation and minimized thermal stratification within the commercial area. Case 4 had the highest thermal comfort performance and breathing zone temperatures of nearly the recommended Class I comfort range outlined by GB/T 50785. It is concluded that optimized ventilation parameters can be effectively used to improve indoor thermal comfort and ventilation performance in commercial spaces of airport terminals.

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