1.1 本试验方法包括测定液态烃燃料的燃烧热，其挥发性从轻馏分到残余燃料不等。 1.2 在正常条件下，本试验方法直接适用于汽油、煤油、1号和2号燃油、1-D和2-D号柴油以及0-GT、1-GT和2-GT号燃气轮机燃料。 1.3 本试验方法的重复性和再现性不如试验方法 D4809 . 1.4 以国际单位制表示的数值应视为标准值。括号中的值仅供参考。 1.5 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。 有关具体的危险说明，请参阅第节 7. 和 9 和 A1.10 和 附件A3 . 1.6 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 燃烧热是衡量燃料可用能量的指标。在考虑发电或供热设备的热效率时，了解该值至关重要。 5.2 通过本试验方法测定的燃烧热被指定为商用和军用涡轮燃料和航空汽油的化学和物理要求之一。 5.3 质量燃烧热，即每单位质量燃料的燃烧热，是用于重量有限的飞行器（如飞机、表面效应飞行器和水翼艇）的燃料的关键特性。这种飞机在加油之间的航程是燃烧热和燃料密度的直接函数。

1.1 This test method covers the determination of the heat of combustion of liquid hydrocarbon fuels ranging in volatility from that of light distillates to that of residual fuels. 1.2 Under normal conditions, this test method is directly applicable to such fuels as gasolines, kerosines, Nos. 1 and 2 fuel oil, Nos. 1-D and 2-D diesel fuel and Nos. 0-GT, 1-GT, and 2-GT gas turbine fuels. 1.3 This test method is not as repeatable and not as reproducible as Test Method D4809 . 1.4 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only. 1.5 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. For specific hazard statements, see Sections 7 and 9 and A1.10 and Annex A3 . 1.6 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 heat of combustion is a measure of the energy available from a fuel. A knowledge of this value is essential when considering the thermal efficiency of equipment for producing either power or heat. 5.2 The heat of combustion as determined by this test method is designated as one of the chemical and physical requirements of both commercial and military turbine fuels and aviation gasolines. 5.3 The mass heat of combustion, the heat of combustion per unit mass of fuel, is a critical property of fuels intended for use in weight-limited craft such as airplanes, surface effect vehicles, and hydrofoils. The range of such craft between refueling is a direct function of the heat of combustion and density of the fuel.