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Category: FAQ
Acoustic cleaner causes a sound pressure pulse which will detach the particles from the surfaces. The deposits adhering to the surface are subjected to a force greater than that retaining it. The particles with different masses are subjected to alternating … Continue reading
Compressed air driven acoustic cleaners do not need a lot of maintenance. However, the maintenance is very important to the best efficiency of the cleaner. When the membrane of the generator is worn it has to be turn over or … Continue reading
The acoustic cleaner uses normal work air. The valve group of the cleaner has a filter/water separator to take out the impurities and water out of the work air.
The NCSD® uses LP gas usually propane. The supply pressure of the gas is 2…4 bar
NCSD® can make 1…15 pulses per second. One pulse uses about 0.4g of gas per pulse. In addition NCSD uses circa 80 Ndm3 of compressed air while running for burning air and cooling.
The air supply pressure should be 6 bars. While sounding the pressure can decrease to 4 bars.
NI250ss and NI250ss/90: 20 Ndm3/s while sounding and 2 Ndm3/s continuously for cooling of the horn. NI100ss and NI100ss/90: 40 Ndm3/s while sounding and 2 Ndm3/s continuously for cooling of the horn.
The outside noise level can be reduced to under 85 dB measured from one meter distance of the generator by using a proper sound insulation box. Nirafon can provide these boxes or instructions and drawings to make proper sound insulation … Continue reading
The outside noise level caused by acoustic cleaner depends on the structures where it is installed. When installed to boiler wall the outside noise level is around 100 dB. The outside noise level of Nirafon NCSD does not exceed 85 … Continue reading
When the NSCD® is operating the controlled explosions happen inside the combustion chamber of the cleaner. If, however, there is a gas leakage in the gas valves and the gas gets into the boiler, the amount of gas will be … Continue reading
The maximum temperature for the pneumatic equipment is 50 ˚C.
The maximum temperature of the generator is around 200 ˚C. When the cleaner is installed into a hot position the cooling air into the cleaner has to always flow to the cleaner.
Nirafon horns are made of SS2342 (AISI316) acid proof steal and in the higher temperature areas the mouth cone of the horn is usually made of G-X15-CrNiSi229. These materials can take the temperatures up to: SS2343 c. 1000˚C and G-X15-CrNiSi229 … Continue reading
- Nirafon acoustic cleaners use only acoustic frequencies (audible to human ear 16…16000Hz). The natural frequency of boiler structures is below this acoustic level. Frequencies below 20 Hz could cause the structures to resonate because of the sound and cause … Continue reading
Acoustic cleaner causes a sound pressure pulse which will detach the particles from the surfaces. The deposits adhering to the surface are subjected to a force greater than that retaining it. The particles with different masses are subjected to alternating … Continue reading