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1. (WO2018203023) OPTIMISED TUNNEL VENTILATION DEVICE

Pub. No.:    WO/2018/203023    International Application No.:    PCT/GB2018/000029
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Thu Feb 22 00:59:59 CET 2018
IPC: F04D 29/44
E21F 1/00
E21F 1/08
F04D 29/54
F04D 25/08
F04D 29/60
Applicants: MOSEN LTD
Inventors: TARADA, Fathi
Title: OPTIMISED TUNNEL VENTILATION DEVICE
Abstract:
A ventilation device that enhances the effective longitudinal thrust of a fan assembly installed within a tunnel or other internal space. The nozzle trailing edge (6) is tilted so that it forms an angle (13) with respect to the fan centreline (7), with the surface of the nozzle throughbore being non-cylindrical in shape. The discharged flow (5) is turned away from the surrounding surfaces by a convergent-divergent bellmouth (1).