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1. Jayesh Jain
By J_G_A_S Team
Sharyu Suryawanshi
Gaurav Kashyap Ananya Singh
Presents to You

2. Calorific Value of Fuel
And Methods For Calculation of Calorific
Values
By J_G_A_S Team

3. Calorific Value
The Amount of Energy produced by the
complete combustion of a material, Eg: KJ/Kg.
The Amount of Energy available of Material from
an item of food when digested, mostly from
Carbohydrates and Fats
By J_G_A_S Team

4. How to Calculate Calorific Value ?
The Calorific Value of Fuel is the amount of heat or Energy
of Heat or Energy a Fuel Generates during Complete
Combustion
It is the Variable of the Heat or Energy Released, which is
either Measured in Glass Calorific Value(GOV) or Net
Calorific Value(NCV)
By J_G_A_S Team

5. Calorific Value Formula
Net Calorific = Gross Calorific – Latent heat of
Value(NCV) Value(GCV) Water Vapors
Gross Calorific = Net Calorific + Latent heat of
Value(GCV) Value(NCV) Water Vapors
OR
By J_G_A_S Team

6. Types of Calorific Value
Lower Calorific Value
(LCV)
Higher Calorific Value
(HCV)
By J_G_A_S Team

7. What is the Difference between Lower
Calorific Value(LCV) & Higher Calorific
Value (HCV)
Higher calorific value (HCV) is the absolute amount of heat
released by unit mass or volume of given fuel after
combustion
A Lower calorific value (LCV) is the absolute quantity of
heat released after burning a unit mass or volume of fuel
when side products are allowed to escape.
By J_G_A_S Team

8. The calorific value of fuel can be defined as the
amount of heat produced by the complete
combustion of one unit of any fuel.
The unit depends upon the type of fuel; for example,
coal is a solid fuel, so it is measured in weight units,
whereas we use volume units for any gaseous or
liquid fuel.
Therefore, the calorific value for them will be
measured in Kilocalorie per Kilogram and Kilocalorie
What is Calorific Value of Fuel
By J_G_A_S Team

9. Fuel Value
The Energy Released when 1 gram of material is
combusted is called its Fuel Value
Compound Fuel Value (KJ/gram)
Fats 38
Carbohydrates 17
Proteins 17
By J_G_A_S Team

10. Graph:
By J_G_A_S Team

11. “Bomb Calorimeter” for Determination
of Calorific Values of Fuel
Calorific Value(CV) of a Fuel is a Characteristics of Fuel
which is Defined as the Energy Liberated per Kg of Fuel
burnt
Fuels are Found in three phase, ie: Solid, Liquid and
Gaseous
Junker’s Calorimeter is used to measure the CV of
Gaseous Fuels
By J_G_A_S Team

12. Experiment Diagram:
By J_G_A_S Team

13. Procedure of “Bomb Calorimeter”
Experiment
Start the Stirrer and Note Down the Initial Temperature of
Water
A Known Quality of Fuel Sample is Added in the Crucible
Let the Current Pass Through the Crucible and let Fuel
Sample to Burn in Presence of Oxygen
Heat released During Combustion of Fuel is Taken by
Water and hence Temperature of Water Rises
Note Final Steady State Temperature of Water
By J_G_A_S Team

14. By J_G_A_S Team
Working of “Bomb Calorimeter”

15. Calorific Value = (m1 + m2) X (Tc +T1 –T2) X (Cw/mf)
of Fuel
Where m1 and m2 are the mass of water in the copper calorimeter
and water equivalent of bomb calorimeter respectively
mf is the Mass of Fuel Sample Whose Calorific Value is to be
Determined
T1 and T2 are the Final and Initial Temperature of the Water Sample.
Tc is Temperature Correction for Radiation Losses
Cw is Specific Heat of Water
By J_G_A_S Team

16. By J_G_A_S Team
Fuel Calorific Value (kJ/kg)
Cow dung cake 6000-8000
Wood 17000-22000
Coal 25000-33000
Petrol 45000
Kerosene 45000
Diesel 45000
Methane 50000
CNG 50000
LPG 55000
Biogas 35000-40000
Hydrogen 150000
Calorific Value of different Material

17. Practical Application of “Bomb
Calorimeter”
Bomb Calorimeter is used for the measurement of the
Calorific Value of Fuel Oils, Gasoline, Coal, Combustion
Waste , Foodstuffs and Building Material etc.
A Bomb Calorimeter is also used for Energy Balance study
in ecology and Study of Nano-material, Ceramics, Zeolite.
The Bomb Calorimeter is Helpful to Study the Thermodynamics
of Common Combustible Materials
By J_G_A_S Team

18. So that’s All About Calorific Value
of Fuels
Conclusion:
We Saw all About Calorific Value of Fuels, Its T
Its Method…!
By J_G_A_S Team

19. By J_G_A_S Team