Aerodynamic performance of the reversible axial fan for high air temperatures

The paper presents the aerodynamic performance of an axial reversible fan for high air temperatures, obtained by applying similarity theory and numerical flow simulations. This analysis was performed possibility installing existing structure impeller a in jet longitudinal ventilation tunnel. direction forced tunnels changes, it is always towards low atmospheric pressure, i.e. natural flow. These fans often work with temperatures event fire. shows operating up to 400?C. results were through simulations original design fan, whose experimentally determined normal conditions (r = 1.2 kg/m3). Performances are given two speeds. Unnecessary corrections use tunnel also considered.