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Calculate H.C.V. and L.C.V. using Dulong formula.

written 6.5 years ago by | modified 2.4 years ago by |

**Subject:-** Applied Chemistry 2.

**Topic:-** Fuels.

**Difficulty:-** Medium

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Calculate H.C.V. and L.C.V. using Dulong formula.

written 6.5 years ago by | modified 2.4 years ago by |

**Subject:-** Applied Chemistry 2.

**Topic:-** Fuels.

**Difficulty:-** Medium

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written 6.4 years ago by |

A sample of coal has following composition by mass C = 70 %, O = 8 %, H = 10 %, N = 3 %, S = 2%, Ash = 7 %. Calculate H.C.V. and L.C.V. using Dulong formula[Difficulty level-high]

Solution:
HCV = 1/100[8080 C+34500(H-O/8) +2240 S]
= 1/100[8080 + 70+34500(10-8/8) +2240 X 2]
= 1/100 [565600 + 34500 (10-1) X 4480]
= 1/100 [565600 + 310500 + 4480]
= 1/100 [880580]
= 8805.80kcal/kg
LCV = [ HCV- 9/100 H X 587] kcal/kg
= [8805.80-9/100 x 587]
= [8805.80- 528.30]
= 8277.80 kcal/kg
Aswer:
HCV/GCV = 8805.80kcal/kg

LCV/NCV = 8277.80 kcal/kg

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