Starting at 3.5 cents a pond for cheap crappy coal
Coal
Gross calorific value of coal
Anthracite has the highest calorific value. and South African coal is best in the world.
The calorific value of lignite coal ranges from 4,000 to 8,300 kilocalories per kilogram.
The average heating value of 1 tonne of coal is around 24 million British Thermal Units (BTU) or 25.6 gigajoules. This value can vary depending on the type and quality of the coal.
Theorotical value can be calculated using the results of ultimate analysis of coal . Based on the GCV of combustible value of coal.
Useful heat value(UHV) pricing mechanism of coal deducted ash and moisture content from standard formula and in this coal is categorised into 7 grades. Gross calorific value(GCV) of coal has 17 grades and prices are linked to the actual calorific value/quality of coal-by latika joshi
Anthracite coal has the highest BTU value among the different types of coal. It is a hard, compact variety with a high carbon content and low impurities, making it a high-quality option for heating and energy production.
Esthetics and Coal.
Idk maybe they value it as a resource that is running out or they could value it as a resource htat they need to get rid off. But at this rate of consumption coal will only last for another 100 or 200 years.
what is the differnence between gross calorific value and useful heat value
Coal is limited value to pakistan because it is considered as the least popular energy fuel due to its poor quality and dangerous mining conditions.