Page 606 - APPLIED PROCESS DESIGN FOR CHEMICAL AND PETROCHEMICAL PLANTS, Volume 1, 3rd Edition

572 Applied Process Design for Chemical and Petrochemical Plants

A-2.
(Continued). Physical Property Conversion Factors

Poise X 0.0672 = pounds (mass)/(ft.-sec.) Btu (in.)
= poundal-sec./sq.ft. x 8.063 x 10- 1 (sq.ft.) ( °F.) (sec.)
Poise X 0.10 = Newton-sec./sq. meter (joules) (in.)
2
Centipoise X 0.01 = gm./cm.-sec. X8.506X 10 = (sq.ft.) (oF.) (sec.)
Centpoise X 6. 72 X 10-• = pound/ft.-sec .
Centipoise X 2.4 = pound/ft.-hr. Specific Gravity (Liquid)
Millipoise X 1000 = poise p of liquid@ 60° F.*
Micropoise X 1,000,000 = poise s = p of water@ 60° F.*
Slugs/ft.-sec. X 47,900 = centipoise • or at other specified temperature
1 centistoke = 1.076 X 10- 5 fL.2 /sec.
1 centipoise (cp) = 0.01 gm./cm. sec. Oil
Slugs/ft.-sec. X 32.2 = pounds (mass) /ft.-sec.
Pounds/ft.-sec. X 3600 = lb./ft.-hr. 5 at 60 ° F./ 0° F. = 131.5 + 141.5
5
degrees API
Pounds (mass) /ft.-sec. X 1487 = centipoise
Pounds (mass)/ft.-sec. X 0.0311 =slugs/ft.-sec. Liquids Lighter Than Water
= pounds (force )-sec./sq.ft.
Viscosity of air @ 68° F. = 180.8 X 10-s poise 140
5
Viscosity of water @ 66° F = 0.010087 poise s@ 60 ° F./ 0° F. = 130 + degrees Baurne'
Liquids Heavier Than Water
Viscosity (Kinematic)
Kinematic viscosity, 145
5
s@ 60 ° F./ 0° F. = 145 - degrees Baume'
centistokcs X 1.076 X 10- =fL. 2 /sec.
5
Dynamic viscosity, centipoise Specific Gravity (Gases)
Kinematic viscosity, centistokes (v) -----------
Fluid density, gm./cu.cm.
Centi poise R of air 53.3
R
R
Sp.Gr. of liquid relative to water at 39.2° F. ( 4° C.) S. = - = - , where R = gas constant
f gas
•
o
o
f gas
Centistokes X 0.01 = stokes, sq.cm./sec. mo!. wt. (gas) mo!. wt. (gas)
Centistokes X 1.076 X Io-• = sq.ft.I sec. s� = mo!. wt. (air) = 29
Centistokes X 0.01 = Stokes, sq.cm./sec.
Density, Liquid p
Thermal Conductivity ( through a homogeneous material) Density liquid, p = (62.3 lb./cu. ft. water) (Sp. Gr. liquid),
pounds /cu. ft.
Btu (ft.) (g.-cal.) (cm.)
3
(sq.ft.) (°F.) (hr.) X 4.134 X 10- = (sq.cm.) (°C.) (sec.) Metric
(Btu) (in.)
X 1.200 X 10 = (sq.ft.) (oF.) (hr.)
1 gram = 10 decigrams
(kilowatt hrs.) (in.)
3 = 100 centigrams
X 3.518 X J0- = (sq.ft.) (oF.) (hr.)
= 1,000 milligrams
( g.-cal.) (cm.) Btu (in.) = 1,000,000 microgram
O
1
(sq.cm.) ( C.) (hr.) x 8.063 x 10- = (sq.ft.) (OF .) (hr.) = 0.001 kilogram
Btu (ft.) = 1 o··G mega gram
2
X 6.719 X 10- = (sq.ft.) (oF.) (hr.) 1 liter= 10 deciliters= 1.0567 liquid quarts
(g.-cal.) (cm.) Btu (in.) IO liters = 1 dekaliter = 2.6417 liquid gallons
O x 2.903 x 10 = 0
3
(sq.cm.) ( C.) (sec.) (sq.ft.) ( F.) (hr.) 10 dekaliters = 1 hectoliter = 2.8375 U. S. bushels
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