How to calculate calorific value of coal?
Answers
heya!!!!
here is ur answer
A new formula for calculating the calorific value of coal from its ultimate analysis has been obtained by regression analysis of a data bank consisting of data on 775 samples of U.S. coals of all ranks. It yielded zero average difference between observed and calculated values and a standard deviation of 129 Btu/lb (300 kJ/kg). Neither average difference nor standard deviation varied much with rank of the coal. The Dulong, Mott-Spooner, Boie, and Grummel-Davies formulae were also tested with the data but gave substantially poorer results. The new formula has been substantiated with data from other laboratories and with data on chars. The distribution of variance, attributable to variability of mineral matter, variability of coal organic matter not related to rank, and variance of laboratory determinations was estimated. Use of the formula to monitor performance of a laboratory is illustrated, as is modification to obtain maximum precision in heat balance calculations on a coal conversion process.
plzz mark as brainliest
Answer:
The calorific value of coal is 25,000 - 33,000
TO CALCULATE THE CALORIFIC VALUE OF COAL:
MJ/kg = (Btu/lb) X 0.002326
For example, a coal with a calorific value of 14,000 Btu/lb has a metric calorific value of 32.56 MJ/kg.