The Conceptual Design of High Pressure Reversible Axial Tunnel Ventilation Fans

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td align="left">Pressure (Pa)</td><td align="center">3400</td></tr><tr><td align="left">Pressure pulse (Pa)</td><td align="center">±500</td></tr><tr><td align="left">Flow (m<sup>3</sup>/s)</td><td align="center">144</td></tr><tr><td align="left">Power (kW)</td><td align="center">710</td></tr><tr><td align="left">Minimum efficiency (%)</td><td align="center">70</td></tr><tr><td align="left">dBA (tunnel side)</td><td align="center">85 ten metres from vent shaft</td></tr><tr><td align="left">dBA (atmospheric side)</td><td align="center">85 ten metres from the vent shaft</td></tr><tr><td align="left">EN 12101-3 certification</td><td align="center">250°C for one hour</td></tr><tr><td align="left">Reversibility</td><td align="center">100% reversible</td></tr><tr><td align="left">Air density</td><td align="center">1.38 kg/m<sup>3</sup></td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Marmaray fan, transform, silencer, and damper package specification.

Advances in Acoustics and Vibration

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Table 1

Table 1: The Conceptual Design of High Pressure Reversible Axial Tunnel Ventilation Fans 