ASHRAE Standard 133-2015 Method of Testing Direct Evaporative Air Coolers

ASHRAE Standard 133-2015 Method of Testing Direct Evaporative Air Coolers

First published in 2001, ASHRAE Standard 133-2015 Method of Testing Direct Evaporative Air Coolers provides procedures for testing direct evaporative cooling devices under laboratory conditions to obtain rating information. In addition, the committee incorporates the effects of ambient conditions, testing error, instrument accuracy, and the need to make certain that no other sources of heat transfer are taking place during the testing.

You can also read ASHRAE Standard 214-2017 Standard for Determining and Expressing Building Energy Performance in a Rating Program

ASHRAE Standard 133-2015 Method of Testing Direct Evaporative Air Coolers

  • ForewordASHRAE Standard 133-2015
  • Purpose
  • Scope
  • Definitions
  • Symbols and Subscripts
  • Requirements
  • Instruments and Methods of Measurement
  • Equipment and Setup
  • Data Record
  • Calculations
  • Performance Corrections to Nominal or Standard Airflow Rate and Speed
  • Report and Results of Test
  • References
  • Informative Annex A: Bibliography
  • Informative Annex B: Additional Figures

This revision makes a key change to Standard 133- 2008. The density correction to saturation effectiveness has been simplified by clarifying that it shall be reported only as a function of actual test standard airflow. Various other improvements were made as well. References were updated to the latest editions, and mandatory language was clarified.

ASHRAE Standard 133-2015 Method of Testing Direct Evaporative Air Coolers Scope

  • The scope of this standard covers a method of testing for rating the saturation effectiveness, airflow rate, and total power of packaged and component direct evaporative air coolers.
  • Covered tests also include the methods for measuring the static pressure differential of the direct evaporative air cooler, density of the air, and speed of rotation of the fan.
  • The ratings resulting from application of this standard  intended for use by manufacturers, specifiers, installers, and users of evaporative air cooling apparatus for residential, commercial, agricultural, and industrial ventilation; for air cooling applications; and for commercial, industrial, and agricultural processing applications.

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ASHRAE Standard 133-2015 Method of Testing Direct Evaporative Air Coolers

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