| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ventilation system including a plurality of jet fans suspended from the ceiling of the tunnel for ventilating an automobile road tunnel and driven in accordance with a required amount of ventilation air, while solving the following problem: the fans are controlled on a device basis, and some of them blow the same amount of air, thereby causing excessive ventilation. <P>SOLUTION: The tunnel ventilation system supplies a required amount of ventilation air by combining at least one jet fan with a rotation speed control device and other constant-speed jet fans. <P>COPYRIGHT: (C)2012,JPO&INPIT |
