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Kolmetz.com - Testing MVGT (Page 9)

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Kolmetz.com - Testing MVGT
NOMENCLATURE
iC4
Iso-Butane
nC4
Normal-Butane
Cb
Capacity Factor, V
b
[
v
/(
l
-
v
)]
0.5
, based on tray bubbling area, 8.93 ft
2
(0.83 m
2
),
ft/s (m/s)
Cs
Capacity Factor, V
s
[
v
/(
l
-
v
)]
0.5
, based on tower cross-sectional area, 12.56 ft
2
(1.17 m
2
),
ft/s (m/s)
Fs
Superficial F-Factor, V
s
(
v
)
0.5
, ft/s (lb/ft
3
)
0.5
, [m/s (kg/m
3
)
0.5
]
gpm
Liquid rate in gallons/minute, (m
3
/h)
V
b
Vapor velocity based on bubbling area, ft/s (m/s)
V
s
Superficial vapor velocity based on column cross-section, ft/s (m/s)
l
Liquid density, lb/ft
3
(kg/m
3
)
v
Vapor density, lb/ft
3
(kg/m
3
)
ABBREVIATIONS
DC
Downcomer
DP
Differential pressure transducer
FL
Non total reflux flood runs
Fld
Flood point
FT
Total reflux flood run
Liq
Liquid
TR
Total reflux efficiency runs
CONVERSION FACTORS
Parameter
English Unit
x
Multiplying Factor
=
S.I. Units
Area
ft
2
0.092903
m
2
Capacity Factor C
ft/s
0.3048
m/s
Density
lb/ft
3
16.0185
kg/m
3
Duties
M Btu/h
0.29288
MW
Length
ft
0.3048
m
Height
in
25.4
mm
Liquid flow rate
gpm
0.227125
m
3
/h
Liquid flux
gpm/ft
2
2.4448
(m
3
/h)/m
2
Liquid load
gpm/in
8.9419
m
3
/(h.m)
Mass flow rate
k lb/h
0.126
kg/s
Pressure
psia
0.06894757
bar
Pressure drop
in Hot Liquid
25.4
mm Hot Liquid
Superficial F-Factor F
s
ft/s (lb/ft
3
)
0.5
1.22
m/s (kg/m
3
)
0.5
Temperature
F
( F ­ 32)/1.8
C

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