A 100 MW coal fired thermal power plant uses coal having a heating value of 20000 kJ/kg and sulphur content of 1%. The overall conversion efficiency (combining the combustion, boiler, steam cycle and turbine efficiency) is 34% and the plant uses 20% excess air. The flue gas at 322C, comes out at a velocity of 12 m/s from a stack of height 75m and diameter 1.5 m. If this power plant is located 2 km far from your place (urban