Tangential firing create turbulent zone in the center of the furnace by directing a horizontal coal firing from each corner of furnace. It form an imaginary circle in which the flame path is tangent. This is done at each elevation for tangential firing. As each elevation creates a circle thenRead More

“Overall, the mitigation through slow rotation aims to minimize thermal stresses, differential expansion, and associated mechanical problems in steam turbines during startup, shutdown, or other operational transitions..” 1. Introduction: 2. Consequences of Steam Admission Stopping: 3. Potential Issues with a Stationary Rotor: 4. Thermal Gradient within the Casing: 5. Thermal-InducedRead More

OBJECTIVE Auxiliary steam is the steam that is required for various auxiliary requirements in a power plant. A part of main steam is tapped off for auxiliary steam station from MS/CRH line, after pressure reducing and de-superheating up to 16 kg/cm2 & 320 °C. At the HT header (16 Kg/cm2 &Read More

Governing system is a device or combination of different system & logics which are used to control the speed of a steam turbine. A governor protects the prime mover from over speed & keeps the prime mover speed at or near the desired RPM. When a prime mover drives generatorRead More

An APH is a  heat trap device. Air heater is a heat exchanger in which air temperature is raised by transferred heat from flue gas. Air heater transfer heat from flue gas to air. Air heater is the last equipment in the flue gas path where remaining heat of flueRead More