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Description of ASTM-E2029 2011ASTM E2029 - 11Standard Test Method for Volumetric and Mass Flow Rate Measurement in a Duct Using Tracer Gas DilutionActive Standard ASTM E2029 | Developed by Subcommittee: E06.41 Book of Standards Volume: 04.11 ASTM E2029Significance and Use The method presented here is a field method that may be used to determine mass and volume flow rates in ducts where flow conditions may be irregular and nonuniform. The gas flowing in the duct is considered to be an ideal gas. The method may be especially useful in those locations where conventional pitot tube or thermal anemometer velocity measurements are difficult or inappropriate due either to very low average flow velocity or the lack of a suitable run of duct upstream and downstream of the measurement location. This test method can produce the volumetric flow rate at standard conditions without the need to determine gas stream composition, temperature, and water vapor content. This test method is useful for determining mass or volumetric flow rates in HVAC ducts, fume hoods, vent stacks, and mine tunnels, as well as in performing model studies of pollution control devices. This test method is based on first principles (conservation of mass) and does not require engineering assumptions. This test method does not require the measurement of the area of the duct or stack. The test method does not require flow straightening. The test method is independent of flow conditions, such as angle, swirl, turbulence, reversals, and hence, does not require flow straightening. The dry volumetric airflow can be determined by drying the air samples without measuring the water vapor concentration. 1. Scope 1.1 This test method describes the measurement of the volumetric and mass flow rate of a gas stream within a duct, stack, pipe, mine tunnel, or flue using a tracer gas dilution technique. For editorial convenience all references in the text will be to a duct, but it should be understood that this could refer equally well to a stack, pipe, mine tunnel, or flue. This test method is limited to those applications where the gas stream and the tracer gas can be treated as ideal gases at the conditions of the measurement. In this test method, the gas stream will be referred as air, though it could be any another gas that exhibits ideal gas law behavior. 1.2 This test method is not restricted to any particular tracer gas although experimental experience has shown that certain gases are used more readily than others as suitable tracer gases. It is preferable that the tracer gas not be a natural component of the gas stream. 1.3 Use of this test method requires a knowledge of the principles of gas analysis and instrumentation. Correct use of the formulas presented here requires consistent use of units. 1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 7.
ASTM Standards E631 Terminology of Building Constructions ANSI/ASME Standards ANSI/ASME TC 19.1&nd Measurement Uncertainty: Instrument ApparatusKeywords ducts; flow rate; mass flow; stacks; tracer gas; volumetric flow: Flow and flow rate--airflow systems/devices; Gas streams; Mass flow; Tracer dilution method; Volumetric measurement; ICS Code ICS Number Code 13.040.01 (Air quality in general) DOI: 10.1520/E2029-11 ASTM International is a member of CrossRef. ASTM E2029The following editions for this book are also available...This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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