A new method for predicting saturated liquid viscosity at temperatures above the normal boiling point

2000 ◽  
Vol 175 (1-2) ◽  
pp. 311-323 ◽  
Author(s):  
S.R.S Sastri ◽  
K.K Rao
Keyword(s):  
Boiling Point ◽  
New Method ◽  
Liquid Viscosity ◽  
Normal Boiling Point ◽  
Saturated Liquid

Velocity of Hypersonic Waves in Liquid Oxygen. Part II

1975 ◽  
Vol 53 (18) ◽  
pp. 1727-1733 ◽  
Author(s):  
M. J. Clouter ◽  
H. Kiefte ◽  
I. E. Morgan
Keyword(s):  
Critical Point ◽  
Sound Velocity ◽  
Excellent Agreement ◽  
Boiling Point ◽  
Brillouin Scattering ◽  
Liquid Oxygen ◽  
Normal Boiling Point ◽  
Saturated Liquid ◽  
Ultrasonic Velocities ◽  
Experimental Errors

Thermal Brillouin scattering techniques have been used to determine the velocities of hypersonic (0.2 to 3 GHz) waves in saturated liquid oxygen at temperatures from the normal boiling point (90.19 K) to the critical point (154.58 K). The results are in excellent agreement with corresponding ultrasonic (1.2 MHz, 10 MHz) velocities obtained from the literature, except for temperatures above about 148 K. In this region the hypersonic velocities are lower in magnitude than the ultrasonic velocities, the discrepancy being 4% at 150 K and increasing to 13% at 153.9 K. Since these discrepancies are substantially greater than the estimated experimental errors (±0.5% for the hypersonic velocities, ±0.05% for the ultrasonic velocities) it is concluded that saturated liquid oxygen exhibits a significant negative dispersion in the sound velocity at temperatures immediately below the critical point.

Liquid Viscosity Above the Normal Boiling Point.

1961 ◽  
Vol 6 (2) ◽  
pp. 263-267 ◽  
Author(s):  
P. E. Parisot ◽  
E. F. Johnson
Keyword(s):  
Boiling Point ◽  
Liquid Viscosity ◽  
Normal Boiling Point

A new method for calculating normal boiling point of liquids

2018 ◽  
Vol 67 (10) ◽  
pp. 1823-1830
Author(s):  
Zh. Li ◽  
W. Wu ◽  
L. Chen
Keyword(s):  
Boiling Point ◽  
New Method ◽  
Normal Boiling Point

The Realization of the Normal Boiling Point of Neon

Metrologia ◽  
1978 ◽  
Vol 14 (1) ◽  
pp. 9-13 ◽  
Author(s):  
R C Kemp ◽  
W R G Kemp
Keyword(s):  
Boiling Point ◽  
Normal Boiling Point

Exciplex-Based Vapor/Liquid Visualization Systems Appropriate for Automotive Gasolines

1993 ◽  
Vol 47 (6) ◽  
pp. 782-786 ◽  
Author(s):  
Lynn A. Melton
Keyword(s):  
Cross Talk ◽  
Spectral Region ◽  
Boiling Point ◽  
Automotive Gasoline ◽  
Normal Boiling Point ◽  
Tertiary Amines ◽  
Temperature Range ◽  
Exciplex Emission ◽  
Visualization Systems ◽  
Vapor Liquid

This paper reports the development of exciplex-based vapor/liquid visualization systems based on exciplexes formed from tertiary amines and fluorine-substituted benzene and/or toluene. These systems are expected to be virtually coevaporative with solvents (fuels) boiling in the temperature range 70 to 110°C and thus are expected to track the vaporization of automotive gasoline effectively. A system consisting of 10% triethylamine/0.5% fluorobenzene/89.5% hexane should be coevaporative with a normal boiling point of 69°C. A system consisting of 10% n-propyldiethylamine/0.5% 4-fluorotoluene/89.5% isooctane should be coevaporative with a normal boiling point of approximately 100°C. Although the coevaporation of these systems is excellent, the exciplexes revert to varying extents to excited monomer at temperatures near 100°C. Thus there is considerable cross talk from the liquid into the vapor spectral region. The tertiary amines generally require excitation at wavelengths below 250 nm; the fluorobenzene or 4-fluorotoluene can be excited at 266 nm. Monomer emission peaks at 290 nm; exciplex emission peaks at 350 nm.

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