Environmental Engineering Reference
In-Depth Information
Table A.3
(continued)
Description
Name
Symbol
Definition
1 kg = 10
3
gram = 10
6
Mass
Kilogram
kg
milligram = 2.205 lb
Ton
t
1 t = 10
3
kg
1 kt = 10
6
Kiloton
kt
kg
Conversions
Pound
lb
1 lb = 16 ounces (oz) = 0.454 kg
Ounce
oz
1 oz = 28.35 g
Hundredweight (UK)
cwt
1 cwt = 112 Ib = 50.802 kg
Long ton (UK)
ltn
1 ltn = 20 cwt = 2,240 Ib = 1.016 metric t =
1,016 kg
Short ton (US)
shtn
1 shtn = 2,000 Ib = 0.907 metric t = 907 kg
Slug
sl
1 sl = 14.594 kg
kg dm
-3
1kgdm
-3
=1tm
-3
=1gcm
-3
=10
3
kg m
-3
Density
Kilogram per liter
lb ft
-3
1lbft
-3
= 16.018 kg m
-3
= 0.016018 kg t
-1
Pound per cubic foot
-1
-1
(UK) = 0.099776 t m
-3
Pound per gallon (UK)
1 lb gal
(UK)
1 lb gal
lb gal
-1
1 lb gal
-1
(US) = 0.11983 t m
-3
Pound per gallon (US)
(US)
m s
-1
1ms
-1
= 3.6 km h
-1
Speed
Meter per second
= 2.237 mph
ft min
-1
1 ft min
-1
= 5.08 9 10
-3
ms
-1
= 1.83 9 10
-2
km h
-1
Foot per minute
= 1.14 9 10
-2
mph
1 mph = 1.609 km h
-1
= 0.447 m s
-1
Miles per hour
mph
Knot
kn
1 kn = nautical or sea mile per hour = nmi h
-1
=
1.852 km h
-1
= 0.514 m s
-1
1 9 100 km
-1
1l9 100 km
-1
Fuel
consumption
Liter per 100 km
= 282/mpg (UK) = 235/mpg
(US)
Conversions
100 km
-1
Miles by gallon (US)
mpg (US)
1 mpg (US) = 235.21 l 9
1 mpg (UK) = 282.48/l 9 100 km
-1
Miles by gallon (UK)
mpg (UK)
Miles by gallon
(UK/US)
mpg (UK/US)
1 mpg (UK) = 1.2 mpg (US)
g kWh
-1
1 g kWh
-1
= 10.527 9 10
-6
oz BTU
-1
Gram per kilowatt hour
g HPh
-1
1 g HPh
-1
= 1.360 g kWh
-1
Gram per horsepower hour
1 LHV = 10,200 kcal kg
-1
= 42 707 kJ kg
-1
Lower heating value of fuel
LHV
g km
-1
1gkm
-1
= 56.8 9 10
-3
oz mi
-1
Specific emissions
Gramm per kilometer
oz mi
-1
1ozmi
-1
= 17.543 g km
-1
Ounce per mile
mW m
-2
1mWm
-2
636 lbf ft (s yd
2
)
-1
Radiation forcing
Milliwatt per square meter
=
1 P = 0.010 (kp s) m
-2
= 0.1 N s m
-2
Dynamic viscosity
Poise
P
Conversions
lb (ft s)
-1
1 lb (ft s)
-1
= 1.487 N s m
-2
Pound per foot and second
lbf s ft
-2
1 lbf s ft
-2
= 47.88 N s m
-2
Pound-force second per
square foot
m
2
s
-1
1m
2
s
-1
=10
6
cSt = 3.6 9 10
3
m
2
h
-1
Kinematic
viscosity
Square meter per second
1 cSt = 10
-6
m
2
-1
=10
-2
Centistoke
cSt
s
St
Conversions
ft
2
s
-1
1ft
2
s
-1
= 0.0929 m
2
s
-1
Square foot per second
ft
2
h
-1
1ft
2
h
-1
= 2.5806 9 10
-5
m
2
s
-1
Square foot per hour
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