O'Reilly logo

Separation Process Engineering: Includes Mass Transfer Analysis, Third Edition by Phillip C. Wankat

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Appendix C. Unit Conversions and Physical Constants

Unit Conversions1

Density and Weight

1000 g = 1.0 kg

1.0 g/cm3 = 1000 kg/m3

1.0 lbm = 0.45359 kg

1.0 lbm/ft3 = 16.01846 kg/m3

Transport Properties: Diffusivity, Viscosity, and Mass-Transfer Coefficient

1.0 ft2/s = 0.009290 m2/s

1.0 cm2/s = 0.0001 m2/s

1.0 Pa s = 1.0 (N s)/m2 = 1.0 kg/(m·s)

1.0 cP = 0.001 Pa·s = 0.01g/(cm·s)

1.0 lbm/(ft s) = 1.48816 Pa s

1.0 mol/[s m2(mol/L)] = 10.0 m/s

1.0 lbmol/[h ft2(lbmol/ft3)] = 0.00008467 m/s

Energy and Specific Heat

1.0 Btu = 1.055056 kJ

1.0 Btu = 0.0002931 kWh

1.0 cal = 4.184 J

1.0 kcal = 4.184 kJ

1.0 Btu/(lbm °F) = 4.1868 kJ/(kg K)

1.0 kcal/(kg °C) = 4.184 kJ/(kg K)

Length and Volume

1.0 μm (1.0 micron) = 10–6 m

100 cm = 1.0 m

1.0 feet = 0.3048 m

1000 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required