2.7. Plume Rise and Stack Height

Try these first

1. 1.

   Define plume rise.

   Hint

   Think about what causes pollutants to rise into the air.

2. 2.

   What is the significance of emission rates in pollution modeling?

   Hint

   Consider how you measure pollution over time.

3. 3.

   What parameter significantly affects plume rise?

   • Stack Temperature
   • Humidity
   • Solar Radiation

   Hint

   Think about conditions that make hot air rise.

4. 4.

   True or False: Emission rates must be assessed with respect to the type of fuel used.

   • True
   • False

   Hint

   Recall how different burning materials yield different smoke outputs.

5. 5.

   Given a factory emits 100 kg/day of CO2 with a specific emission factor of 2 kg per ton of coal burned, how many tons of coal is being burned?

   Hint

   Dividing total emissions by the emission factor gives activity rate.

6. 6.

   If an anemometer measured wind speeds of 10 m/s at 10 m height, how would you adjust this for a stack height of 50 m in a city?

   Hint

   Recall that wind speed decreases with increasing height due to surface friction.