Campbell-scientific EC150 CO2 and H2O Open-Path Gas Analyzer and EC100 Manual de usuario Pagina 70

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Appendix D. Useful Equations
( )
15.273
1000
+
+
=
TR
M
X
PX
P
d
v
v
d
ρ
(D-4)
( )
+
+
=
v
v
d
d
X
X
TR
PM
1000
1
15.273
ρ
(D-5)
Dew Point from Molar Mixing Ratio
tmpd
tmpd
d
T
T
T
_
_
502.17
97.240
=
(D-6)
( )
+
=
v
v
tmpd
Xf
PX
lnT
100061121.0
_
(D-7)
( ) ( )
295
109.5102.300072.1 PTPf
×+×+=
(D-8)
Water Vapor Molar Mixing Ratio from Dew Point
1000
eP
e
X
v
=
(D-9)
+
=
d
d
T
T
EXPfe
97.240
502.17
61121.0
(D-10)
Water Vapor Mass Density from Dew Point
( )(
)
( )
++
=
d
d
v
T
T
EXP
TR
f
97.240
502.17
15.273
61121
.0018.0
ρ
(D-11)
D-2
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