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dispersion equation different forms

Calculation of Effective Stack Height. Note that H = hs ?h, where ?h is the stack rise.Stack rise is dependant on stack characteristics,Meteorology, and physico-chemical nature of effluent.. * Carson-Moses Equation:. * Holland Formula:. * Concawe Formula:. Where . Preferred Equation for Stack Rise.

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dispersion equation different forms

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    1. Dispersion Equation Different Forms

    3. Preferred Equation for Stack Rise

    4. Wind Velocity U for the Model U = f(z) given by (U/U1) = (z/z1)p, where p depends on on atmospheric stability. Appropriate value of U for dispersion model is the mean value through the plume. If mean U is unavailable, use appropriate U at stack height. In most cases only U10m is available- then correct for U at stack height using above equation. If no mention of height of measurement of U is made use U as mean. If measured height is specified for U, then correct for it to get U at stack height.

    5. Estimating Emission Rate Q for Various Scenarios: (Ref: A Kumar, Pollution Engineering, p 52, February (1996)

    6. Concentration Isopleths

    7. Model of flow around a sharp edged 3-D building in a deep boundary layer

    8. Cavity Length for Short and Long Buildings

    9. Effective stack height with buildings

    10. Effective stack height with buildings continued.

    11. Concentration in Cavity Wake.

    12. Concentration immediately downwind of wake cavity

    13. Obtaining ?y and ?z

    14. Stability Classes

    15. EPA Air Quality and Dispersion Models

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