1.1 本试验方法适用于通过等沸点或绝热燃烧量热仪测定煤和焦炭的总热值。 1.2 以国际单位制或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值不一定是精确的等价物；因此，为确保符合本标准，每个系统应独立使用，且两个系统的值不得组合。 1.3 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 第节给出了具体的危险说明 8. . 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 总热值可用于计算样品代表的煤炭或焦炭数量的总热值，以便于付款。 5.2 总热值可用于计算热值与硫含量的关系，以确定煤炭是否符合工业燃料的监管要求。 5.3 总热值可用于评估选矿工艺的有效性。 5.4 根据分类对煤进行分类时，可能需要总热值 D388页 .

1.1 This test method pertains to the determination of the gross calorific value of coal and coke by either an isoperibol or adiabatic combustion calorimeter. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, to ensure conformance with the standard, each system shall be used independently of the other, and values from the two systems shall not be combined. 1.3 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. Specific hazard statements are given in Section 8 . 1.4 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. ====== Significance And Use ====== 5.1 The gross calorific value can be used to compute the total calorific content of the quantity of coal or coke represented by the sample for payment purposes. 5.2 The gross calorific value can be used for computing the calorific value versus sulfur content to determine whether the coal meets regulatory requirements for industrial fuels. 5.3 The gross calorific value can be used to evaluate the effectiveness of beneficiation processes. 5.4 The gross calorific value can be required to classify coals according to Classification D388 .