ISO 1928:2020

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Coal and coke — Determination of gross calorific value

ISO 1928:2020 is an international standard that specifies a method for determining the gross calorific value of solid mineral fuels like coal and coke, using a combustion vessel calorimeter at a constant volume and a reference temperature of 25°C; essentially, it outlines a standardized way to measure the heat energy released when a solid fuel is burned completely.