GB/T 213-2008 Translated English of Chinese Standard. (GBT 213-2008, GB/T213-2008, GBT213-2008): Determination of calorific value of coal
https://www.chinesestandard.net, 9. feb. 2020 - 50 sider
This Standard specifies the principle, test conditions, reagents and materials, instruments and devices, determination steps, calculation of determination result, thermal capacity, instrument constant calibration and method precision for oxygen bomb calorimetric method that is used to determine the gross calorific value of coal. This Standard also specifies the calculation method for net calorific value.
Calculation of measurement results
Calibration of heat capacity and instrument constants
Conversion of calorific value of various base coals
according to formula added adjust Air-dried base air-dried coal sample Annex aperture correction value automatic Beckman thermometer benzoic acid bomb calorific value calculation calculation methods calibration calorimeter carbon coal water slurry combustion dish conduct connected constant pressure constant volume continuous correction value corresponding cotton thread definitions Determination dried coal water effective electrode end point end temperature exceed fuel GB/T given glass gram J/g gross calorific value heat capacity hydroxide ignition wire indicator inner and outer inner cylinder temperature intervals Joules per gram linear regression mass fraction measurement mercury method moisture needs net calorific value observed obtain outer cylinder temperature oxygen bomb precision reach reading Record reference relative standard deviation repeated replace sample or dried specified standard solution steps stirrer sulfur Table temperature difference temperature rise titration unit value at constant valve washing liquid water slurry sample weighing