Determination of Uncertainty in Gross Calorific Value of Coal Using Bomb Calorimeter

Abstract

A bomb calorimeter is an apparatus used for measuring the performance of coal in term of heat of combustion. Recent awareness has been created regarding uncertainty of measurement, due to mainly two reasons. Laboratory accreditation, which has steadily been on the rise, which requires a estimation of uncertainty of measurement particularly in the field of calibration. Second, increased maturity level of the quality system certification as the manufacturing companies looking at the reliability of measurement through correct calibration of inspection, measuring and test equipment. The quality of coal is decided by the various parameters such as ash content, air dried moisture, volatile matter, gross calorific value and sulphur content etc. The grade of coal is decided by the quality of coal which decides the performance of generation of electricity. The uncertainty of measurement in bomb calorimeter gets affected by various parameters. This paper describes the methodology, uncertainty calculations and effects of individual factors on it.

Influence of Binding Materials on the Main Quality Parameters of Biomass Pellets Produced from Corn Stover

“…Calorimeter is a device used to measure the internal energy in a substance. A simple calorimeter just consists of a thermometer attached to a metal container full of water suspended above a combustion chamber (Mandavgade, 2011). The basic principle is that the heat released by the combustion chamber increases the temperature of the water in a measurable way.…”

Performance of Fuzzy Inference System for Calorific Value Predicting by Using The Mamdani Method

“…The bomb calorimeter is a sophisticated experimental apparatus which requires expertise in its operation. Also the calorific value can be estimated based on proximate analysis and this procedure is more cheaper, easier and faster to conduct [8,9] . Therefore some researchers interested to find the mathematical model of relation between the calorific value and the proximate analysis results.…”