A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SILENCING SYSTEM
An object is to provide a silencing system that includes a silencer disposed in a ventilation sleeve, can suppress the generation of negative pressure in the interior, and can prevent a door or the like of an interior entrance from being difficult to open. The silencing system includes one or more silencers that are disposed in a ventilation sleeve provided to penetrate a wall separating two spaces, and “αA>10C−(0.1/P)×TL” is satisfied in a case where a gap equivalent area of the ventilation sleeve in which the silencer is installed is denoted by αA and a normalized sound transmission loss in an octave band in which a first resonant frequency of the ventilation sleeve is present is denoted by TL.C denotes a constant determined by a measurement system in a case where there is no silencer and P denotes a transmission efficiency coefficient.
SILENCING SYSTEM
An object is to provide a silencing system that includes a silencer disposed in a ventilation sleeve, can suppress the generation of negative pressure in the interior, and can prevent a door or the like of an interior entrance from being difficult to open. The silencing system includes one or more silencers that are disposed in a ventilation sleeve provided to penetrate a wall separating two spaces, and “αA>10C−(0.1/P)×TL” is satisfied in a case where a gap equivalent area of the ventilation sleeve in which the silencer is installed is denoted by αA and a normalized sound transmission loss in an octave band in which a first resonant frequency of the ventilation sleeve is present is denoted by TL.C denotes a constant determined by a measurement system in a case where there is no silencer and P denotes a transmission efficiency coefficient.
SILENCING SYSTEM
SUGAWARA YOSHIHIRO (author) / YAMAZOE SHOGO (author) / HAKUTA SHINYA (author) / OHTSU AKIHIKO (author) / OKI KAZUHIRO (author)
2021-06-03
Patent
Electronic Resource
English