Chemical Process Equipment: Selection and Design, Second Edition

Appendix A: Units, Notation, and General Data

Table A1: Units and Conversions

Prefixes for Unit Multiplies and Submultiples:

10 -18 atto

a

10 1

deca

da

10 -l5 femto

f

10 2

hecto

h

10 -12 pico

P

10 3

kilo

k

10 -9 nano

n

10 6

mega

M

10 -6 micro

?

10 9

giga

G

10 -3 milli

m

10 12

tera

T

10 -2 centi

c

10 -1 deci

d

Length:


Volume:


Standard gas volume:


Gas constant R:

Energy

Temperature Mole

R

lb ft 2/sec 2

Rankine

lb

4.969 10 4

ft lbf

Rankine

lb

1544

cuft atm

Rankine

lb

0.7302

cuft (lbf/sqin.)

Rankine

lb

10.73

Btu

Rankine

lb

1.987

hPhr

Rankine

lb

7.805 10 -4

kW hr

Rankine

lb

5.819 10 -4

J (abs)

Kelvin

g

8.314

kg m 2/sec 2

Kelvin

kg

8.314 10 3

kg fm

Kelvin

kg

8.478 10 2

cucm atm

Kelvin

g

82.0562

calorie

Kelvin

g

1.987

Gravitational constant:


Mass:


Density:


Force:


Pressure:


Energy, work, and heat:


Power:


Temperature:


Temperature difference:


Heat capacity and entropy:


Specific energy:


Volumetric flow:


Heat flux:


Heat transfer coefficient:


Surface tension:


Viscosity, dynamic:


Viscosity, kinematic:


Table A2: Notation [a]

C p =

heat capacity at constant pressure

C V =

heat capacity at constant volume

g c =

gravitational constant (numerical values in Table A1)

h =

individual heat transfer coefficient

H =

enthalpy

k

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