Changes in industry-specific final energy demand also affect the intermediate flows of the "energy and services of the energy supply industry" as well as the associated transformation input of primary energy (coal, crude oil, natural gas, etc).
This implies that with more deterministic prices of coal input, the better to invest earlier in renewables.
On the other hand, when prices of coal input are more volatile in the market, it is better to wait and delay the investment to avoid losses from investment risks.
Using data on prices, heat input and sulfur content of coal delivered to U.S. power plants, we find strong evidence of a price decrease and of an increase in the sulfur premium, some indication that the amount of coal used might have increased, and no evidence of fuel-switching towards higher-sulfur coal.
The project will need an input of 90 million tons of coal per year and is expected to create 18,000 jobs, Xinhua reported.
Coal fire monitoring and risk assessment provide important input data for the delineation of coal fire zones and planning of extinguishing activities.
Coal petrology provides significant inputs for the industrial utilisation of coal and for broad understanding the coal formation and diagenesis.
Heating time, relative position of measuring points, the ratio of fine coal thickness, artificial density, voidage and activation energy were selected as input variables and oxygen concentration and temperature of coal column as output variables.
It was found that this approach allows for high spatial resolution identification of individual elements in coal architecture, thus potentially generating valuable input for knowledge-driven optimization and design of coal utilization processes.
Elemental concentrations of coal ash were used as the input data for thermodynamic calculations.
Both types of models use six inputs describing coal properties and gasification process parameters namely fixed carbon, volatile matter, mineral matter, air feed per kg of coal, steam feed per kg of coal and temperature.
