A bomb calorimeter helps measure the (where, GCV – Gross Calorific Value. NCV – Net Calorific Value.) ?
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Answer: B. GCV at constant volume
Explanation
A bomb calorimeter is built with a heavy rigid wall that prevents volume expansion. Combustion occurs inside a sealed, constant-volume metal bomb submerged in water. Measuring heat release under these conditions yields the gross calorific value at constant volume. Gross calorific value includes the latent heat of vaporization of any water formed. Constant volume thermodynamic processes account for internal energy changes during reaction. Oxygen is pressurized inside the bomb to ensure complete combustion of the sample.
Laboratory technicians rely on bomb calorimeters for precise fuel energy rating tests. Fuel suppliers and power plants use constant volume GCV data for commercial transactions. Mathematical corrections convert constant volume data to constant pressure values if needed. Option A is incorrect because bomb calorimeters operate at constant volume, not pressure. Option C measures net value at constant pressure, which requires different equipment. Option D measures net calorific value, whereas the bomb measures gross calorific value.
- Subject
- Engineering
- Category
- Chemical Engineering
- Topic
- —
- Difficulty
- medium
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