13005-feul

📌 Lecture 1: Types of Fuels and Their Chemical Composition
✔ Fossil fuels (oil, natural gas, coal)
✔ Biofuels and renewable sources

📌 Lecture 2: Physical and Chemical Properties of Fuels
✔ Density, viscosity, flash point, and calorific value
✔ Impact of chemical composition on combustion efficiency