Stratum Ventilation Cheaper And Healthier For Small Rooms- Study.

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Stratum ventilation is advocated as the most energy-efficient way of cooling small/medium sized structures such as school or office rooms in hot weather, as they even combat airborne diseases as per a study featured in the <em>World Review of Science, Technology and Sustainable Development</em> journal. This cheaper air-conditioning alternative employs a horizontal, layered airflow. A computer model developed by Zhang Lin, Jinliang Wang, Ting Yao, T.T. Chow and K.F. Fong of City University, Hong Kong, analyzes and predicts the motion of exhaled droplets with different kinds of air ventilations- mixing, displacement and stratum. The simulation follows drift-flux model formulated on Eulerian-Eulerian approach to affect particle movement in a room. Different ventilations affect particle motions differently, and particle concentration in stratum ventilation is low, implying that stratum-ventilated rooms reduce the possibility of infection.
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