1. chimney
2. induced draft fan
3. both combined(a) and(b)
4. steam jet drought
steam jet drought
1. entropy
2. enthalpy
3. pressure
4. temperature
temperature
1. infinitely long
2. around 200 meters
3. equal to the height of the hot gas column producing drought
4. outside temperature is very low
equal to the height of the hot gas column producing drought
1. carbon, hydrogen, nitrogen, sulphur, moisture
2. fixed carbon, ash, volatile matter, moisture
3. higher calorific value
4. lower calorific value
fixed carbon, ash, volatile matter, moisture
1. induced draft fan
2. smoke meter
3. chimney
4. precipitator
precipitator
1. Higher calorific value at constant volume
2. Lower calorific value at constant volume
3. Higher calorific value at constant pressure
4. Lower calorific value at constant pressure
Higher calorific value at constant volume
1. carbon, hydrogen, nitrogen, sulphur, moisture
2. fixed carbon, ash, volatile matter, moisture
3. higher calorific value
4. lower calorific value
carbon, hydrogen, nitrogen, sulphur, moisture
1. correct fuel air ratio
2. proper ignition temperature
3. to support combustion
4. all the three above
all the three above
1. all the fuel burns instantaneously producing high energy release
2. fuel burns with less air
3. coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal
4. explosion in furnace
coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal
1. increase thermal efficiency of boiler
2. economize on fuel
3. extract heat from the exhaust flue gases
4. increase flue gas temperature
increase thermal efficiency of boiler