Tapestry on Central - HVAC
Phoenix, AZ
Scope of Work
MD Acoustics was retained to evaluate noise generated by an existing rooftop chiller and its potential impact on an adjacent residential tower. The study focused on documenting existing noise conditions, identifying dominant frequency components, and assessing compliance with local noise ordinance requirements.
MD Acoustics conducted on-site noise measurements while the chiller was operating, collecting data at multiple positions surrounding the unit as well as along the rooftop perimeter. Measured data was post-processed to evaluate the acoustic spectrum and identify problematic frequency bands. A 3D environmental noise model was developed using SoundPlan to characterize noise propagation from the rooftop chiller to nearby residences, incorporating site geometry, topography, and atmospheric conditions. Based on the findings, MD Acoustics evaluated noise levels relative to regulatory limits and developed targeted noise abatement concepts, including noise contour mapping and preliminary mitigation recommendations.
Outcome
The study provided a clear understanding of the rooftop chiller’s noise characteristics and its impact on adjacent residential receptors. Modeling and analysis identified key frequency drivers and areas of exceedance, allowing practical mitigation strategies to be evaluated prior to implementation. The findings supported informed decision-making and outlined a clear path toward reducing chiller noise and achieving compliance with applicable municipal noise requirements.
Scope of Work
MD Acoustics was retained to evaluate noise generated by an existing rooftop chiller and its potential impact on an adjacent residential tower. The study focused on documenting existing noise conditions, identifying dominant frequency components, and assessing compliance with local noise ordinance requirements.
MD Acoustics conducted on-site noise measurements while the chiller was operating, collecting data at multiple positions surrounding the unit as well as along the rooftop perimeter. Measured data was post-processed to evaluate the acoustic spectrum and identify problematic frequency bands. A 3D environmental noise model was developed using SoundPlan to characterize noise propagation from the rooftop chiller to nearby residences, incorporating site geometry, topography, and atmospheric conditions. Based on the findings, MD Acoustics evaluated noise levels relative to regulatory limits and developed targeted noise abatement concepts, including noise contour mapping and preliminary mitigation recommendations.
Outcome
The study provided a clear understanding of the rooftop chiller’s noise characteristics and its impact on adjacent residential receptors. Modeling and analysis identified key frequency drivers and areas of exceedance, allowing practical mitigation strategies to be evaluated prior to implementation. The findings supported informed decision-making and outlined a clear path toward reducing chiller noise and achieving compliance with applicable municipal noise requirements.
