Energy Fuels
Fuel may be defined as the storing of energy. The higher is the concentration of energy storage, better is the fuel. Classification of Fuels:- 1). Solid Fuels : - Solid fuels are mainly classified into two categories as mentioned below: a). Natural fuels such as Wood, Coal, etc. b). Manufactured fuels such as Charcoal, coke, briquettes, etc. Wood:- Ash Content : - It varying degrees of calcium, magnesium and sodium carbonate as well as minute quantities of iron oxides, alumina and silica. Moisture Content : - It varies from about 40 to 60%. It strongly depends upon the type of the tree as well as the season of the year. Characteristics of the flame : - It depends on the tar content of wood. Combustion characteristics : - They have observed that the lighter wood burns more intensely with a long flame as compared to hick wood. Ignition Temperature : - It depends upon the different kinds of woods for eg . Pine at 295 C, Oak at 287 C, Larch at 290 C and Fir at 29