Air Requirement: Compressed air preferably instrument air is required at following parameters :
• Pressure = 4.8 to 6.2 Bar
• Volume = 45 scfm (during sounding)
Timing Pattern: The acoustic cleaners are sounded for a few seconds at periodic intervals. The timing pattern can be altered to suit the applications.
Frequency Vs. Wavelength :
The sound frequency & it’s wavelength are inversely proportional to each other.
Higher the frequency ----- Lower the wavelength. e.g. 420 Hz, 350 Hz & 230 Hz frequencies have shorter wavelength. Such frequencies cater to smaller applications such hoppers, ID fans etc..
Lower the frequency ----- Higher the wavelength. e.g. 120 Hz, 75 Hz & 60 Hz frequencies have longer wavelength. Such frequencies cater to bigger applications such as storage silos, boilers etc..
Multidirectional Effect :
Sound waves are multidirectional & hence travel everywhere. Acoustic cleaners with carefully selected frequencies can cover entire area of the equipments such as storage silos, boilers & heat exchangers.
Acoustic cleaners can replace conventional technologies having unidirectional/localized effect such as :
1. Vibrating Motors
2. Air Canons
3. Steam Soot Blowers
4. Mechanical Rapping System
Effect on Equipment Structures :
The energy level in the sound waves produced by acoustic cleaners is sufficient to vibrate the particles & not the structures.
The resonating frequencies are in the range of 10 – 30 Hz whereas Primasonics acoustic cleaners are designed with sound frequencies of 60 Hz & above. Hence acoustic cleaners will not create any harm to concrete or metallic structures.
Primasonics acoustic cleaners are successfully working on concrete silos as old as 30 years.
Demonstrations :
Effect of acoustic cleaner on stored powder
Effect of sonic soot blowers in boilers