Answer to Question #323942 in Chemistry for Anjali Dehariya

Question

Calculate the gross calorific value of coal

having the following composition: C= 80%, H = 85-10-3%, N=1% and ash = 7% using Dulong's formula

Answer 1

Solution:

Dulong's formula for calculating the calorific value is given as:

where C, H, O, and S are the percentages of carbon, hydrogen, oxygen and sulphur in the fuel respectively.

C=80%, H=???%, O=???%, N=1%, S=???% and ash=7%.

Therefore,

HCV = (0.01)× [8080×80 + 34500×(??? − ???/8) + 2240×???] = ??? kcal/kg

If you substitute all the given values in the formula and calculate, you will get HCV