Publication: Air flow in an air conditioning room
Date
2002-03-01
Authors
Ooi, Yongson
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Abstract
The aim of superior air conditioning system no longer only constrained to
advancing the efficiency of cooling machine, but includes the study of airflow with the
assistance of the distribution of several significant parameters. A numerical study of the
turbulent flow over an enclosed air conditioning system was not practicable a few decades
ago since the computer facilities were not sufficient. With the advancement of the
computer and use of CFD, it is possible now to simulate the air conditioning system.
As a first step, a standard office room was taken up for simulation.
Temperature and velocity distribution over various virtual planes for various option of
locations of the air conditioner blower were analyzed intend to achieve the maximum
comfort for the occupant. Using Fluent, k-epsilon and Reynolds Stress models for
turbulence flow were used for the analysis with various grid spacing. Reynolds Stress
Model has been used for further analysis since Reynolds Stress Model has indicated
independents of grid spacing (7.5 cm, 10 cm and 15 cm) when compared with k-epsilon
model. The medium grid spacing, which 26706 nodes were generated for the entire
enclose region has been used for simulation studies.
The present analysis will help in locating air-conditioning system for better
comfort. This study can be extended for bigger offices, industries, hospitals as well as a
gigantic shopping mall.