ASME PTC 21

Abstract

OBJECT AND SCOPE <br> The object of the test is to determine the performance characteristics of equipment designed to collect particulate matter from a gas stream. This Code specifies methods for determining the performance of the equipment with regard to the following: <br> (a) overall mass collection efficiency of the equipment; <br> (b) particulate matter concentration at inlet and outlet of collector; <br> (c) efficiency of collection according to size of particle; <br> (d) resistance to gas flow, i.e., the total pressure drop across the equipment; <br> (e) quantity of gas passing through the equipment; and <br> (f) power consumption of the collection equipment. <br> The rules and instructions included in this Code are for the particulate matter collection equipment proper, as indicated by para. 1.1. If the scope of the test includes any auxiliary apparatus, it will be necessary to consult other ASME codes, as applicable. <br> The determination of the particulate matter count, extensively used as a measure of atmospheric particulate matter pollution, is outside the scope of this Code. <br> This Code cautions against the extrapolation of the performance of a complete particulate matter collection installation on the basis of testing only a single unit of multiple unit equipment. <br> Should specific directions given in this Code for any particular measurement differ from those given in other ASME Performance Test Codes for similar measurements, the instructions of this Code shall prevail, unless otherwise agreed by the parties to the test. <br> This Code specifies the desired conditions and procedures for obtaining valid and accurate test results. Factors affecting overall test accuracy and validity are considered in paras. 5.4 and 5.5.