2-5 Noise
What is the anticipated sound power level of each ACC fan? Is the make and model known at this point? If so, please identify the make and model.
Invenergy Resp. 2-5:
| ACC noise levels used in the model translate to a total sound power level of 112 dBA or to 50 dBA at 400 feet, (after accounting for wind wall shielding and fan directivity). Assuming an 18-cell arrangement, the PWL per fan is 99 dBA (0 degrees from vertical). The ACC is modeled as two separate area sources located at the expected height of the of the fan deck , (rather than modeled as individual fans). The EPC contractor will be responsible for procuring the ACC, which has not yet been purchased at this stage of project development. Thus, individual fan model information is not available.
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Respondent:
| Michael Theriault, Michael Theriault Acoustics, Inc.
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Date: | April 20, 2016 |