Historical
ANSI/ASHRAE 143-2000
Method of Test for Rating Indirect Evaporative Coolers
This standard provides procedures for testing indirect evaporative cooling devices under laboratory conditions to provide rating information. It covers methods of testing under steady-state conditions for rating indirect evaporative coolers that sensibly cool a primary airstream through heat exchanger(s) by the evaporation of water into a secondary airstream and are self-contained or are components of packaged systems. It does not cover devices that use mechanical refrigeration or thermal storage or devices that dry the primary or secondary airstream.
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ashrae]