Quantification of Air Flow Pattern in Air Conditioned Room – A Review

Abstract

This configuration has many advantages from the point of view of comfort and medical assistance, but it
implies an important restriction as far as ventilation is concerned. Numerical model solves mass, momentum and mean
age of air equations assuming isothermal and stationary flow. Ventilation is evaluated analyzing the age of air and the
velocity fields inside the room. The results with the initial architectural design of the room show very deficient ventilation
at the occupant’s site. Alternative configurations have been studied, allowing for correct ventilation without renouncing
to the assistance advantages. Finally, the optimum configuration of the room is provided, regarding both the comfort of
the occupants and the cost of execution.
The present work focuses on the room air flow pattern in terms of temperature and velocity along with thermal comfort
quantification by varying clothing index cfd study. Room air flow pattern in the two test rooms, University conference
hall and RAC Lab are studied under four conditions; natural, only fan, only AC, fan with AC. Effect of air conditioner
position on the room air flow pattern is also studied. Thermal comfort is quantified using standard ASHRAE sensational
equation based on the feelings of the four B. Tech students at various clothing index and exposure period. The con tour of
the flow patterns are plotted using ORIGIN 6.1 software.