ASHRAE 145.2

Abstract

Scope: This standard prescribes a full-scale laboratory test method for measuring the performance of in-duct sorptive media gas-phase air-cleaning devices. In this context, “sorptive media” are defined as the active agent of the air cleaner, whether granular or sheet or pleated, that operate by adsorbing and/or chemically reacting with contaminant gases. This test is conducted under steady-state conditions at elevated gas challenge concentrations (relative to ventilation applications) and, therefore, should be used to compare devices rather than directly predict performance in any particular application. The method of testing measures the performance of aircleaning devices for removing one or more specified gaseous contaminants or gas mixtures intended to simulate operation during service life. This standard defines procedures for the dispersion of the gases required for conducting the test. It also provides a method for determining gas concentrations upstream and downstream of the air-cleaning device to calculate removal efficiency. This standard establishes performance specifications for the equipment required to conduct the tests, defines methods of calculating and reporting results obtained from the test data, and establishes a results reporting system that can be applied to the gas-phase air-cleaning devices covered by this standard. The test method defined by this standard is applied to a sample device that is assumed to be representative of other devices marketed with the same brand and model number. This standard does not apply to stand-alone room air cleaners. PURPOSE The purpose of this standard is to provide a standard laboratory test method for assessing the performance of sorptive media gas-phase air-cleaning devices. The results of these tests can provide information to the engineer useful for the design and selection of air-cleaning equipment and the design of air-cleaning systems for controlling indoor concentrations of gaseous air contaminants