ABSTRACT
The objective of this assignment was to study the plume dispersion from a 400m high stack up
to 10 km horizontal distance. The quantity for six different atmospheric conditions
determined by the Pasquill-Gifford was taken into account and curves for these conditions were
plotted between the horizontal distances up to 10 km to gain the idea of effluents
emission from a 400 m high stack.
PROCEDURE
The quantity (χv/Q) which has been used to study dispersion effects was computed by the
Following formula,
Where,
y = horizontal diffusion coefficient
z = vertical diffusion coefficient
Q= Effluent Emission Rate
V=Mean Wind
In order to determine the maximum concentration, following relation is used
where (yz)max means that y and z are to be evaluated at the value of x determined from
y was evaluated at the value of x, which was obtained by the curve between z and x. The
value of z was determined by the above relation.
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/ Qv
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/ Qv
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