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h5.Effluent Launder
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Orifice
...
Diameter
...
The
...
orifice
...
equation
...
was
...
used
...
to
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determine
...
the
...
necessary
...
area
...
of
...
the
...
orifice
...
that
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gives
...
the
...
correct
...
amount
...
of
...
head
...
and
...
matches
...
with
...
an
...
existing
...
drill
...
bit
...
size.
...
The
...
flow
...
rate
...
used
...
in
...
this
...
equation
...
was
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the
...
total
...
plant
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flow
...
rate
...
divided
...
by
...
the
...
number
...
of
...
orifices.
...
The
...
minor
...
loss
...
coefficient
...
for
...
an
...
orifice
...
is
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assumed
...
to
...
be
...
0.63.
...
The
...
head
...
loss
...
term
...
in
...
the
...
equation
...
is
...
total
...
head
...
available
...
less
...
the
...
head
...
loss
...
in
...
the
...
manifold
...
pipe
...
less
...
the
...
velocity
...
component
...
of
...
head
...
loss
...
through
...
the
...
pipe.
...
This
...
area
...
was
...
then
...
converted
...
into
...
a
...
diameter
...
and
...
rounded
...
to
...
the
...
next
...
smallest
...
drill
...
bit
...
size
...
(0.7541cm
...
or
...
19/64").
...
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