1-10 Noise

Does Invenergy, or its parent or related company, operate another combined cycle plant that uses an air cooled condenser (ACC)? If so, please identify the plant and the noise mitigation installations in each such plant.

RESPONSE:

 

Invenergy does not have any other combined cycle plants that use ACCs in operation. ACCs use a series of fans that blow air over a heat exchanger, (much like an automobile’s radiator) and the fans and heat exchangers are arranged in cells. The attenuation features that are utilized on ACCs are low noise fans, which are specially designed fan blades that operate at a lower speed and are used in conjunction with the ACC heat exchanger surface, which is increased to accommodate the lower fan speed and remove the required heat.

 

RESPONDENT:

 

Mike Hankard, Senior Acoustical Consultant, Michael Theriault Acoustics, Inc. and John Niland, Director, Business Development, Invenergy

 

DATE:

March 31, 2016