ISO 1928:2020 煤和焦炭 总热值的测定

标准编号：ISO 1928:2020

中文名称：煤和焦炭 总热值的测定

英文名称：Coal and coke — Determination of gross calorific value

发布日期：2020-10

标准范围

本文件规定了在燃烧容器量热计中测定固体矿物燃料在恒定体积和参考温度25°C下的总热值的方法，该量热计通过认证苯甲酸的燃烧进行校准。所得结果为分析样品在恒定体积下的总热值，燃烧产物中的所有水均为液态水。在实践中，燃料在恒定（大气压）压力下燃烧，水不会凝结，而是作为蒸汽与烟气一起排出。在这些条件下，工作燃烧热是燃料在恒定压力下的净热值。也可以使用恒定体积下的净热值；给出了计算这两个值的公式。校准和燃料试验的一般原则和程序在正文中有规定，而与使用特定类型的量热仪有关的原则和程序在附录a至C中有描述。附录D包含使用指定类型的量热仪进行校准和燃料试验的检查表。附件E给出了一些计算示例。附录F提供了热量计燃烧容器的安全使用、维护和测试指南。注释描述符:固体燃料、煤、焦炭、试验、测定、热值、计算规则、量热法。

This document specifies a method for the determination of the gross calorific value of a solid mineral fuel at constant volume and at the reference temperature of 25 °C in a combustion vessel calorimeter calibrated by combustion of certified benzoic acid.The result obtained is the gross calorific value of the analysis sample at constant volume with all the water of the combustion products as liquid water. In practice, fuel is burned at constant (atmospheric) pressure and the water is not condensed but is removed as vapour with the flue gases. Under these conditions, the operative heat of combustion is the net calorific value of the fuel at constant pressure. The net calorific value at constant volume can also be used; formulae are given for calculating both values.General principles and procedures for the calibrations and the fuel tests are specified in the main text, whereas those pertaining to the use of a particular type of calorimetric instrument are described in Annexes A to C. Annex D contains checklists for performing calibration and fuel tests using specified types of calorimeters. Annex E gives examples illustrating some of the calculations. Annex F provides guidance around safe use, maintenance and testing of the calorimeter combustion vessel.NOTE Descriptors: solid fuels, coal, coke, tests, determination, calorific value, rules of calculation, calorimetry.

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