A sample of coal contains $62 \%$ carbon, $35 \%$ oxygen, $6 \%$ hydrogen, $0.5 \%$ sulphur, $0.2 \%$ nitrogen and $0.3 \%$ ash. Calculate Gross calorific value and Net calorific value.

Explanation

The GCV and NCV are important parameters in the evaluation of coal quality and its potential as a fuel source. The calculations involve the mass fractions of each element and their respective heating values, as well as the heat loss due to moisture and the heat of vaporization of water.

A sample of coal contains $62 \%$ carbon, $35 \%$ oxygen, $6 \%$ hydrogen, $0.5 \%$ sulphur, $0.2 \%$ nitrogen and $0.3 \%$ ash. Calculate Gross calorific value and Net calorific value.

Explanation

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