Fuel and Combustion — Summer 2024

Define and classify fuel with suitable examples.

Define flash point and fire point and explain the significance of both..

Define calorific value. Explain the bomb calorimetric experiment with neat diagram to estimate calorific value.

Define coal and classify it based on calorific value.

Discuss the significance of washing of coal in power sector.

Discuss in detail about the proximate analysis of coal.

Discuss in detail about the ultimate analysis of coal.

Discuss the significance of cetane number in diesel fuel.

Explain the delayed coking process in refineries.

Describe the atmospheric distillation process with neat flow diagram

Discuss the significance of octane number in gasoline fuel.

Explain the solvent de-waxing process in refineries.

Describe the vacuum distillation process with neat flow diagram

Define coal gas with its composition.

Explain ammonia decomposition process for hydrogen production.

Define bio-fuel. Describe in detail about the production processes and technologies available for ethanol production. OR1

Discuss in detail about Liquefied Petroleum Gas (LPG)

Explain turn down ratio of burner. State the various types of gas burner with their application.

Define producer gas. Discuss the different reactions involved in the production of producer gas.

Define adiabatic flame temperature.

Briefly discuss diffusion flames and premixed flames.

Draw a neat diagram of ORSAT apparatus and explain the analysis of flue gas in detail.

Write in brief about velocity of flame propagation.

List out the various characteristics of an efficient furnace.

Describe fluidized bed combustion technology for coal combustion and explain how it superior than fixed bed combustion.