Question
Download Solution PDFThe plume behavior which occurs in the super adiabatic condition with light to moderate wind speed in the presence of large scale thermal eddies are known as _____.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
1) Looping Plume: This occurs in a superadiabatic environment with light to moderate wind speed in the presence of large scale thermal eddies. Unstable and need higher stacks.
2) Trapping Plume: When the inversion layer exists above the emission source as well as below the source. Emitted plume will neither go up nor go down and would be trapped in between and thus termed as trapping plume.
3) Coning Plume: When wind velocity is high and sub-adiabatic conditions exist (ELR < ALR). The environment is highly stable.
4) Fanning Plume: Under extreme inversion conditions. The emission will spread only horizontally.
5) Lofting Plume: When there is a strong super-adiabatic condition above the surface inversion. Such plume has minimum downward mixing as its downward motion is prevented by inversion.
6) Fumigating Plume: When an inversion occurs above the top of the stack and a super-adiabatic condition prevails below the stack.
7) Neutral Plume: Upward vertical rise when ELR=ALR.
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