longname |
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{longname} Q756. Do I need to calculate the moisture content of the methane emitted from my coal mine? {longname} |
A756:
...
When
...
volumetric
...
flow
...
rate
...
and
...
methane
...
concentration
...
are
...
measured
...
on
...
the
...
same
...
basis
...
(both
...
wet
...
or
...
both
...
dry),
...
you
...
do
...
not
...
need
...
to
...
calculate
...
the
...
moisture
...
content
...
of
...
the
...
methane
...
emitted.
...
In
...
this
...
case,
...
when
...
calculating
...
methane
...
liberated
...
from
...
the
...
coal
...
mine
...
according
...
to
...
equation
...
FF-1
...
(40
...
part
...
98.323),
...
the
...
moisture
...
correction
...
factor
...
is
...
1
...
and
...
moisture
...
content
...
is
...
N/A.
...
Any
...
field
...
in
...
the
...
reporting
...
form
...
for
...
moisture
...
content
...
should
...
be
...
left
...
blank,
...
and
...
any
...
validation
...
messages
...
about
...
moisture
...
content
...
that
...
pop
...
up
...
when
...
you
...
are
...
submitting
...
your
...
reporting
...
form
...
should
...
be
...
disregarded.
...
If
...
the
...
volumetric
...
flow
...
rate
...
and
...
methane
...
concentration
...
are
...
not
...
measured
...
on
...
the
...
same
...
basis
...
(one
...
is
...
wet
...
and
...
the
...
other
...
is
...
dry)
...
then
...
you
...
should
...
calculate
...
the
...
moisture
...
content
...
of
...
the
...
methane,
...
as
...
explained
...
in
...
equation
...
FF-1.
...
The
...
conversion
...
of
...
percent
...
relative
...
humidity
...
to
...
moisture
...
content
...
is
...
usually
...
done
...
with
...
a
...
psychrometric
...
table
...
or
...
chart.
...
These
...
tables
...
and
...
charts
...
are
...
typically
...
found
...
in
...
science
...
and
...
engineering
...
handbooks,
...
and
...
are
...
now
...
readily
...
available
...
on
...
the
...
internet
...
as
...
well.
...
We
...
do
...
not
...
prescribe
...
a
...
particular
...
conversion
...
formula.
...
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{info}
Source: B. Master, 6/21/2013
Approval / Publishing History: Version 1 (Approved 7/8/13)
Expiration: none
Relevant Subparts: Subpart FF
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