Operating room is critical environment that required
ventilation for comfort and to control hazardous emissions from
patients and staff. The ventilation system of a hospital operating
room is used to provide comfortable and healthy environment.
The healthy environment can be achieved by minimizing the
risk of contamination through filtration and air distribution
scheme. This paper involves numerical study for different
ventilation systems studying the effect of air distribution on
bacteria diffusion and the indoor air quality by using (CFD)
techniques. Five different configurations ventilation systems
based on Hospital guidelines standards conditions are applied
on a selected model to evaluate the efficiency of ventilation
systems in minimizing the risk of postoperative infection. It is
concluded that the fourth configurations (laminar airflow (LAF)
and exhausts from low level at two sides exhorts) which
matching with DIN and ASHRAE Standard is the most efficient
which satisfies the comfort conditions and provides protection
against infection.