WhisperFlo 2122 Trim.
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1.Unique Passage Shape
- Reduces acoustical conversion efficiency for the pressure drop ratio regime of each stage
- Reduces turbulence coming into the stage restrictions to minimize shock-associated noise
- Places turbulent shear layers away from solid boundaries to reduce dipole noise
2. Multistage Pressure Reduction
- First stage pressure drop ratio is greater than that of the second stage
- Acoustical conversion efficiency is reduced for lower pressure ratios
- Stream power is divided between stages
- First stage noise is attenuated
3. Frequency Spectrum Shift
- Reduces strain energy in piping
- n Maximizes piping transmission loss to reduce radiated noise
- n Reduces acoustic energy in the audible range
- n Exploits the natural damping of high frequency acoustic waves
4. Exit Jet Independence
- Controls the second stage pressure ratio to avoid jet coalescence
- Adequate spacing between jets
- Jets are oriented essentially parallel to one another to avoid interaction
5. Velocity Management
- Utilizes expanding area principle to compensate for volumetric expansion of depressurizing gas
6. Complementary Body Design
- Flow up configuration
- Avoids impingement on body wall
- Adequate cavity size and shape to control secondary noise sources