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Ucotherm, heat transfer medium,
Ulinskas, R,
Ulrych, G,
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Ucotherm, heat transfer medium,
Ulinskas, R,
Ulrych, G,
Undecane:
1-Undecene:
Unequal baffle spacing, correction factor for,
UNIFAC method, for estimation of thermodynamic properties of mixtures,
Uniform heat flux:
Uniform wall temperature, combined forced and free convection in channels with:
United Kingdom, mechanical design of heat exchangers in:
Universal laws, for turbulent boundary layers,
Universal velocity defect law,
Universal velocity profile,
Unsteady flows:
Upward-facing surface, free convective heat transfer from,
US, mechanical design of heat exchangers in:
U-tube bundles, for shell-and-tube heat exchangers
Utility selection, in heat exchanger network analysis by the pinch method,
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W
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Z
U
UNIFAC method, for estimation of thermodynamic properties of mixtures,
tables of constants for use with,
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Constants for Binary Mixtures
DOI 10.1615/hedhme.a.000527
5.5 PHYSICAL PROPERTY DATA TABLES
5.5.4 Constants for binary mixtures
R.N. Maddox
This section supplies the constants necessary for prediction of nonideal behavior using the Analytical Solution Of Groups (Table 1a—Table 1k). UNIFAC (Table 2a and Table 2b) and Parameters From Group Contributions (Table 3). Methods discussed in Section 504B.
Table 1a Parameters for use in the analytical solution of groups
Alcohol-hydrocarbon-water systems at 60 °C (1) | ||||
Group pair | Compounds | Assignments | ||
---|---|---|---|---|
CH2 | OH | FH | ||
CH2 | Hexane | 6.0 | 6.0 | |
OH | Water | 1.4 | 1.0 | |
Water | 1.4 | 1.0 | ||
Pentane | 5.0 | 5.0 | ||
Methanol | 1.0 | 1.0 | 2.0 | |
Water | 1.4 | 1.0 | ||
Heptane | 7.0 | 7.0 | ||
Butanol | 4.0 | 1.0 | 5.0 | |
Parameters | ||||
CH2 | 1.0 | 0.305 | ||
OH | 0.0147 | 1.0 |
Table 1b Parameters for use in the analytical solution of groups
Methanol-glycerol systems (1) | |||||
Group pair | Compounds | Assignments | |||
---|---|---|---|---|---|
CH2 | OH | GOH | FH | ||
CH2– | Glycerol | 6.0 | 6.0 | ||
Glycerol | 6.0 | 6.0 | |||
OH– | Methanol | 1.0 | 1.0 | 2.0 | |
Glycerol | |||||
Calc. | Water | 1.4 | 1.0 | ||
Glycerol | 6.0 | 6.0 | |||
Parameters | |||||
CH2 | 1.0 | 0.305 | 0.353 | ||
OH | 0.0147 | 1.0 | 1.095 | ||
Glycerol | 0.0153 | 0.991 | 1.0 |
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