Labels:anechoic chamber | book | shelf OCR: Standard 500. Louvers Actual Theoretical airflow Discharge 055 Classes and above 399 299 199 and below EXAMPLE up to m/s at least 99% efficient and between .399 loss at 394 fpm core velocity (maximum) Obviously a solid metal plate would have 100% water rejection effectiveness as well. But since we 're talking about getting air into the building the AMCA standard must also consider the louver efficiency in allowing air ir The Discharge Loss Coefficient is comparison of the actual airflow though the louver versus the theoretical airflow through an opening the same size the louver Theoretical airflow Formula IS founs in AMCA 501. The higher the class the better airflow performance BSRIAHEVAC Discharge Loss classes are identical. betweer aximum Obvioushy standaro found
