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Description of ASTM-D6245 2024ASTM D6245-24Active Standard: Standard Guide on the Relationship of Indoor Carbon Dioxide Concentrations to Indoor Air Quality and VentilationASTM D6245Scope 1.1 This guide describes the relationship of indoor carbon dioxide (CO2) concentrations to indoor air quality (IAQ) and building ventilation. 1.2 This guide contains background information on the health, comfort, and performance impacts of indoor CO2 exposure, as well as indoor CO2 limits contained in various standards and regulations. 1.3 This guide describes the estimation of CO2 generation rates from people as a function of sex, age, body mass, and level of physical activity. 1.4 This guide describes the relationship of CO2 to IAQ, including how CO2 relates to the perception of human body odor, limitations on the application of CO2 as a metric of IAQ, and the relationship of CO2 to the risk of infectious aerosol exposure. 1.5 This guide describes how CO2 concentration measurements can be used to evaluate building ventilation including mass balance analysis to determine the percent outdoor air intake at an air handler, tracer gas decay measurements to estimate whole building air change rates, and use of the constant injection tracer gas technique at equilibrium to estimate whole building air change rates. 1.6 This guide discusses concentration measurement issues, such as calibration and sensor location, and continuous indoor concentration monitoring but does not include specific test methods for either application. 1.7 This guide discusses the use of indoor CO2 concentrations for demand control ventilation (DCV) but does not contain detailed application guidance. 1.8 Units—The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.9 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. Keywords air change; air changes per hour; air change rate; building; carbon dioxide; indoor air quality; odor; tracer gas; ventilation; ICS Code ICS Number Code 13.040.01 (Air quality in general) DOI: 10.1520/D6245-24 The 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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