Historical
ANSI/ASHRAE Standard 133-2008
Method of Testing Direct Evaporative Air Coolers
Establishes a uniform method of laboratory testing for rating packaged and component direct evaporative air coolers. Covered test also include methods for measuring static pressure differential of the direct evaporative air cooler, density of the air, and speed of rotation of the fan. Requires that packaged and component direct evaporative air coolers be simultaneously tested for airflow, total power, and saturation effectiveness. Ratings resulting from application of this standard are intended for use by manufacturers, specifiers, installers, and users of evaporative air cooling apparatus for residential, commercial, agricultural, and industrial ventilation; air cooling applications; and for commercial, industrial, and agricultural processing applications. Dual units of measurement.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]