What is meant by Gar in coal?
GAR – Gross As Received. Thermal coal is quoted on a GAR basis, except for Europe/ARA, Richards Bay 6,000 kcal/kg, and Japan and Korea West CIF, which are quoted on a NAR (Net As Received) basis. … It provides a rough estimate of the heating value of coal.
What is GCV ARB?
ARB puts all variables into consideration and uses the total weight as the basis of measurement. ADB (air-dried) basis neglect the presence of moistures other than inherent moisture unlike ARB which uses total moisture. This results in different measured GCV on different Basis.
What is kcal of coal?
Coal is very shiny, repels moisture, calorific value 7,800 – 8,000 kcal/kg, no coking properties.
What is the price of Indonesian coal?
Indonesia sets May HBA thermal coal price at $89.74/mt, up 3.5% on month | S&P Global Platts.
How do you calculate moisture in coal?
Total moisture =X+Y*(1-X/100), Where, X: percentage loss in mass of original in air-drying, Y: percentage loss in mass of air dried sample on oven drying.
How is coal GCV calculated?
The results for intrinsic properties and the gross calorific value are given in table 1. GCV= 7115.197 – 123.971*M – 81.3121*A + 20.7421*FC, Where GCV in kcal/kg and moisture, ash, fixed carbon in air dried percentage basis.
What is air dried basis coal?
Air dried basis: The coal has naturally dried in the open air until it cannot dry or dissipate any more moisture. … Dry basis: An analysis expressed on the basis of a coal sample from which the total moisture has in theory been removed. Coal in dry basis includes all contents but moisture.
What is the ash content of coal?
The ash content of coal is the non-combustible residue left after carbon, oxygen, sulfur and water has been driven off during combustion. The remaining residue or ash is expressed as a percent of the original coal sample weight.
What is the heating value of coal?
Heat Values of Various Fuels
|Natural gas||42-55 MJ/kg|
|Hard black coal (IEA definition)||>23.9 MJ/kg|
|Hard black coal (Australia & Canada)||c. 25 MJ/kg|
|Sub-bituminous coal (IEA definition)||17.4-23.9 MJ/kg|