JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisites

Thermodynamics, Thermal Engineering I & II

Course Objectives

The course is intended to make a post graduate student to understand

• The fundamental of combustion phenomena in general
• The different combustion process, its thermodynamics and kinetics
• The combustion mechanism in different types of combustion
• The burner design for efficient combustion
• Different combustion models
• The effect of quantity & quality of fuel and engine technology on exhaust emissions
• The concept of laminar and turbulent flame propagation
• Different methods to reduce air pollution

Course Outcomes

At the end of the course, the student will be able to:

• Understand the concepts of combustion phenomena in energy conversion devices
• Apply the knowledge of adiabatic flame temperature in the design of combustion devices
• Identify the phenomenon of flame stabilization in laminar and turbulent flames
• Analyze the pollution formation mechanisms in combustion of solid, liquid and gaseous fuels

UNIT - I

Fuels: Detailed classification – Conventional and Unconventional Solid, Liquid, gaseous fuels and nuclear fuels – Origin of Coal – Analysis of coal. Coal – Carborisation, Gasification and liquification – Lignite: petroleum-based fuels – problems associated with very low calorific value gases: Coal Gas – Blast Furnace Gas Alcohols and Biogas.

UNIT - II

Principles of Combustion: Chemical composition – Flue gas analysis – dew point of products – Combustion stoichiometry. Chemical kinetics – Rate of reaction – Reaction order – Molecularity – Zeroth, first, second and third order reactions - complex reactions – chain reactions. Theories of reaction Kinetics – General oxidation behavior of HC’s.

UNIT - III

Detonation and Deflagration waves of premixed gasses, Rankine Hygienist relation, Hygienist curve, laminar and turbulent flame propagation and structure, Burning velocity of fuels – Measurement of burning velocity – factors affecting the burning velocity.

UNIT - IV

Flame Stability, Combustion of fuel, Theory of diffusion flames, droplets and sprays – Combustion systems – Pulverized fuel furnaces – fixed, Entrained and Fluidised Bed Systems.

UNIT - V

Environmental Considerations: Air pollution – Effects on Environment, Human Health etc. Principal pollutants – Legislative Measures – Methods of Emission control.

TEXT BOOKS:

• 1. Combustion Fundamentals by Roger A Strehlow, Mc Graw Hill
• 2. Fuels and combustion by Sharma and Chander Mohan, Tata Mc Graw Hill

REFERENCE BOOKS:

• 1. Combustion Engineering and Fuel Technology by Shaha A.K., Oxford and IBH.
• 2. Principles of Combustion by Kanneth K. Kuo, Wiley and Sons.
• 3. Fuels & Combustion by Sameer Circar, Mc. Graw Hill.
• 4. An Introduction to Combustion by Stephen R. Turns, Mc. Graw Hill International Edition.
• 5. Combustion Engineering by Gary L. Berman & Kenneth W. Ragland, Mc. Graw Hill International Edition. M.Tech, I Year, I Sem