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1. on burning 0.72g of a solid fuel in a bomb calorimeter, the temperature of 250g of water is increased from 27.3°c to 29.1°c. if the water equivalent is 150g, calculate the HCV of the fuel.
2. Calculate the minimum amount of the air required for the complete combustion of 150kgs of fuel contain 70% carbon, 15% sulfur and the rest nitrogen by weight.
3. in an experiment in a bomb calorimeter, solid fuel of 0.90g is burnt. it is observed that increase of temperature is 3.8°c of 4000g of water. the fuel contains 1% of H. Calculate the HCV and LCV values (equivalent weight of water = 385g and latent heat of steam =587 cal/g.)
4. Calculate the gross and net calorific value of a coal which analyses: 74%C, 6%H, 1%N, 9%O, 0.8% S, 2.2% moisture and 8% ash.
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