Simulation of thermal comfort in the lecture room equipped with direct expansion air conditioner and ventilation system

الملخص EN

This research investigation in airflow characteristics and thermal comfort inside a lecture room contained load under cooling by a ceiling air conditioner of 4-way cassette with 45° discharger angle, and ventilating system.

A modified version of a three-dimensional software FLUENT was used to simulate the complex flow inside the room.

The computational program was validate by comparing the numerical results with experiential result of temperature and air velocity measurement.

The comparison showed a good agreement.

The results showed that the ceiling air conditioner with mixing ventilation system is more effective in achieving the airflow mixing, temperature distribution, and thermal comfort as recommended by interval environment condition of ANSI/ASHRAE Standard 55-2010.