In November, 2019, the CTI released its latest revision of Acceptance Test Code (ATC) 128, Measurement of Sound from Water Cooling Towers, which is the Industry’s recognized standard specifically for published sound data provided by manufacturers of package cooling towers used on HVAC, Industrial, and Process cooling systems. The updated technique for sound power calculation of package towers was adopted after extensive research, sound modeling, product testing, and comparisons with various internationally recognized sound codes. In the 2019 edition, the legacy sound pressure measurement locations of 1.5 meter (5 feet) and 15 meter (50 feet) remain the same and the 15 meter sound pre
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