In case of overfeed stokers, the coal is fed on the grate above the point of air admission. Working principle : In this type of fuel firing, the primary air enters the grate from the bottom. The air passing through the grate is...
Tag - Mechanical
Petrol vapours from fuel tank escape into atmosphere by evaporation (or breathing). This vapour comes out through filter cap vent or the tank vent tube. When the engine is not running, petrol will evaporative emission control...
Excessive nitrogen oxides (NO2) form when peak combustion temperature exceeds 1950°C. To lower the combustion temperature, many engines have EGR system. It recirculates about 10% of the inert gas back into the intake manifold...
Air pollution and its control I.C engines convert heat energy into mechanical energy by burning the fuel in its combustion chamber called cylinder. Mostly, petrol and diesel oil are used as fuels for I.C engines. These fuels...
If the temperature of an air fuel mixture is raised high enough, the mixture will self ignite without the need of a spark plug Knocking or detonation in S.I engines. This phenomenon is called as self ignition or Auto ignition...
The coal preparation includes sizing, removal of rock originating from mine roof, removal of ash forming and sulphur bearing minerals, drying to remove excessive surface moisture and blending of different coals to achieve desired...
Definition of metrology is a “Science of measurement”. The most important parameter in metrology is the length. Metrology is divided into Industrial Metrology and Medical Metrology under consideration of its...
As we have discussed already, the torque of an engine crankshaft varies considerably throughout the working cycle, due to variations in the crank positions, the pressure in the cylinder and the inertia force on the piston and...
Vapour compression refrigeration system uses a liquefiable vapour as the refrigerant. In this system, the refrigerant used alternatively undergoes a change of phase from vapour to liquid and liquid to vapour during the cycle. In...
In this chapter, we shall discuss the static and dynamic force analysis of planar mechanisms in detail. In our studies of “Kinematics of Machinery“, we limited ourselves to consideration of the geometry of the motions...