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.
Effect of acoustic cleaner on stored powder
Effect of sonic soot blowers in boilers