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Air Pollution Dispersion Lab

Air Pollution Dispersion Lab. Tim Ellis, Ph.D., P.E. CE 326 Principles of Environmental Engineering Department of Civil, Construction and Environmental Engineering Iowa State University Spring 2008. ATMOSPHERIC CONDITIONS WHICH AFFECT AIR POLLUTION. Wind direction and speed

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Air Pollution Dispersion Lab

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  1. Air Pollution Dispersion Lab Tim Ellis, Ph.D., P.E. CE 326 Principles of Environmental Engineering Department of Civil, Construction and Environmental Engineering Iowa State University Spring 2008

  2. ATMOSPHERIC CONDITIONS WHICH AFFECT AIR POLLUTION • Wind direction and speed • Cloud cover radiation reaching earth temperature profile turbulence • Precipitation

  3. Neutral Stability

  4. Unstable

  5. Stable

  6. Inversion in Los Angeles, CA

  7. Inversion at Four Corners power plant

  8. Fig 7-17: Land Breeze during night

  9. Fig 7-18: Land Breeze during day

  10. Fig 7-19: Effect of lake breeze on plume dispersion

  11. Fig 7-21: Plume dispersion coordinate system

  12. Fig 7-22: Horizontal dispersion coefficient

  13. Fig 7-23: Vertical dispersion coefficient

  14. PLUME RISE

  15. Fig 7-24: Effect of elevated inversion on dsipersion

  16. sz = 0.47 ( L - H )

  17. Building Downwash

  18. Building Downwash

  19. Building Downwash

  20. Building Downwash

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