Sentences with phrase «coal samples»

The team was able to derive new emissions factors based on data from Chinese government programs that analyzed nearly 5000 coal samples taken throughout the country.

However, those emission factors have shortcomings because they are based on analyses of only a few coal samples.

Doughty gathered coal samples from mines throughout the U.S.. By measuring the coal elemental concentrations, he found elements needed by plants, like phosphorus, were more abundant and much better distributed during the era of the dinosaurs than the Carboniferous.

EIA's emission factors are derived from the EIA Coal Analysis File, a large database of coal sample analyses.

A team of scientists and Ph.D's, known as the Rate Group, gathered fossilized wood samples (some specimens previously aged at 250 million years) and coal, from the Department of Energy Coal Sample Bank.

The ratio of carbon to heat content was computed for each of the 5,426 selected coal samples by coal rank and State of origin under the assumption that all of the carbon in the coal is converted to carbon dioxide during combustion.

From the more than 60,000 coal samples in the File, 5,426 were identified as containing data on heat value and the ultimate analysis (6) needed for developing the relationship between carbon and heat content of the coal, that is, the carbon dioxide emission factors.

He has seven years operation and maintenance experience at coal and gas thermal power stations, and he has worked in water / boiler chemistry, ambient air and stack flue gas monitoring and analysis, oil and lubricant, and coal sampling.