Reduced-scale experimental and numerical investigation on the energy and smoke control performance of natural ventilation systems in a high-rise atrium

Natural ventilation (NV) is an effective energy-saving strategy to remove the excessive heat in high-rise atria. The traditional NV system atria has inlet openings at bottom and outlet top. However, this may bring fire safety concerns due rapid spread of smoke during atrium fire. To concern, a new was proposed study. This applies segmentation slab divide into upper lower parts, which can limit movement. A shaft installed maintain rate extract smoke. investigate energy control performance systems, 1:20 small-scale experimental model CFD numerical were built. results indicate that with more than system. Furthermore, simplify mechanical exhaust improve performance, e.g., requires volumetric flow maintains thinner layer.