Chapter V: V Volume, Specific; Specific Volume

V

vanadium (element)

vacuum, perfect

complete vacuum, equal to 0 in. (mercury).

vapor density

weight of 1 ft ³ of a vapor at standard conditions, 70 F temperature and 14.696 lb/in. ² pressure.

vapor pressure

absolute pressure of a liquid and its vapor at a specific temperature, in a closed container, where the vapor maintains equilibrium with the liquid.

vapor pressure of various liquids psia at ( F):

• acetone: 7.6 (100)

• alcohol: 0.86 (68)

• benzene: 1.3 (100)

• benzol: 3.2 (100)

• carbon disulfide: 11.1 (100)

• ether: 8.37 (68)

• ethyl ether: 11.48 (83)

  • 16.8 (100)

• gasoline: 11.5 (100)

• mercury: 2.51 E ? 05 (68)

• methyl acetate: 7.1 (100)

• methyl ethyl ketone: 3.5 (100)

• naphtha: 0.5 (100)

• naphtha (VMP): 1.0 (100)

• toluene: 1.0 (100)

• toluol: 1.0 (100)

• water: 0.08896 (32)

  • 0.33845 (68)

  • 0.609 (86)

• 14.696 (212)

vaporization heat

varas = 0.848176 m

See also HEAT TRANSFER.

velocity

rate of movement of an object; distance per unit time

velocity, angular

ROTATION

velocity, linear

velocity of light, light speed =

2.99776 E + 10 cm/s	2.99776 E + 08 m/s
5.9 E + 10 ft/min	6.706 E + 08 mi/h
9.835 E + 08 ft/s	1.1176 E + 07 mi/min
1.180 E + 10 in./s	186,000 mi/s
8.3271 E + 04 m/h

velocity of sound, sonic speed =

3.3162 E + 04 cm/s	331.62 m/s
6.5280 E + 04 ft/min	741.8 mi/h
1088 ft/s	12.36 mi/min
1.3056 E + 04 in./s	0.206 mi/s