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Indoor air technologies have been developing in recent years. In this regard, the overwhelming majority of the studies are about thermal comfort, indoor air quality, and energy consumption in residential buildings and industrial workspaces. On the other hand, indoor air quality is a significant parameter on humans' health and convenience, especially in cleanrooms. Furthermore, rooms can produce a considerable number of particles in the form of harmful organismic gases and can adversely affect the people working in there. Exploiting a clean air stream to remove inside particles and contaminations is the primary method of improving the indoor air quality. Designing an air ventilation system to remove inside particles is one of these methods. In this study, aerosol concentration for different particle dimensions and different layouts of the inlet gates in a wholly equipped cleanroom is investigated. Moreover, the average particle concentration resulting from each layout is compared. It is illustrated that the particle concentration changes with the variation of the dimension of the particles. In the next part, particle concentration on different parts of a patient's body with different inlet gates is investigated. For this purpose, four different points of the body are specified for measurements, and the particle concentration for each part is studied for particles with 0.5 μm and 5 μm diameter with different inlet gate arrangements. According to the results, a fully open gate arrangement has the best efficiency, while a diagonal layout cannot remove particles suitably. Moreover, it has been conducted that using a model patient instead of an actual patient can adversely affect the results.

Effect of Different Inlet Configurations on Particle Concentration around a Patient in Cleanroom