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Propane - Prandtl Number

Figures and tables showing Prandtl Number of liquid and gaseous propane at varying temperarure and pressure, SI and Imperial units

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The Prandtl Number - Pr - is a dimensionless number approximating the ratio of momentum diffusivity (kinematic viscosity) to thermal diffusivity - and is often used in heat transfer and free and forced convection calculations.

The Prandtl number can for calculations be expressed as

Pr =  μ cp / k                           (1)

where
μ = absolute or dynamic viscosity [kg/(m s)], [lbm/(ft h)]
cp = specific heat [J/(kg K)], [Btu/(lbm oF)]
k = thermal conductivity [W/(m K)], [Btu/(h ft2 oF/ft)]

Below, Prandtl numbers of propane at varying temperatures and saturation pressure, as well as 1, 10 and 100 bara (14.5, 145 and 1450 psia) are given in figures and tables.

See also other properties of Propane at varying temperature and pressure: Density and specific weightDynamic and Kinematic Viscosity Specific heat (heat capacity), Thermal conductivity and Thermal diffusivity, and Thermophysical properties at standard conditions
as well as Prandtl number of Air, Ammonia, Carbon dioxide, Methane, Nitrogen and Water.

Prandtl number of propane at atmospheric pressure, varying temperature given as °C or °F:

Propane Prandtl number 1bara C
Propane Prandtl number 1bara F

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Prandtl number of propane at 1, 10 and 100 bara (14.5, 145 and 1450 psia), varying temperature given as °C or °F:

Propane Prandtl number pressure C
Propane Prandtl number pressure FBack to top

Prandtl number of propane at atmospheric pressure, temperature given as K, °C or °F:

State Temperature Prandtl number Temperature Prandtl number
[K] [°C] [-] [K] [°F] [-]
Liquid 123 -150 13.7 116 -250 17.0
148 -125 7.59 144 -200 8.15
173 -100 5.32 172 -150 5.39
198 -75 4.20 200 -100 4.15
223 -50 3.57 228 -50 3.48
231 -42 3.43 231 -44 3.43
Gas 231 -42 0.784 231 -44 0.784
248 -25 0.770 244 -20 0.773
263 -10 0.761 255 0 0.766
268 -5 0.759 266 20 0.760
273 0 0.757 272 30 0.757
278 5 0.755 278 40 0.755
283 10 0.753 283 50 0.753
293 20 0.751 294 70 0.750
298 25 0.750 300 80 0.749
303 30 0.749 305 90 0.748
323 50 0.746 311 100 0.747
348 75 0.745 339 150 0.745
373 100 0.744 366 200 0.744
398 125 0.744 394 250 0.744
423 150 0.743 422 300 0.743
448 175 0.740 478 400 0.736
473 200 0.737 533 500 0.723
523 250 0.726 589 600 0.706
573 300 0.711 644 700 0.686
623 350 0.694 700 800 0.665
673 400 0.675 755 900 0.644
773 500 0.637 811 1000 0.622

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Prandtl number of propane at given temperatures and saturation pressure as well as 1, 10 and 100 bara (14.5, 145 and 1450 psia):

State Temperature Pressure Prandtl number
[K] [°C] [°F] [bara] [psia] [-]
Liquid at

equilibrium

100 -173 -280 2.5E-07 3.7E-06 35.37
130 -143 -226 0.000176 0.00255 11.19
160 -113 -172 0.00850 0.1233 6.270
190 -83.2 -118 0.1055 1.530 4.495
220 -53.2 -63.7 0.6058 8.787 3.643
250 -23.2 -9.7 2.180 31.62 3.179
280 6.9 44.3 5.817 84.37 2.920
310 36.9 98.3 12.73 184.6 2.790
320 46.9 116 15.99 231.9 2.770
340 66.9 152 24.32 352.7 2.848
355 81.9 179 32.43 470.4 3.259
360 86.9 188 35.55 515.6 3.548

Gas at

equilibrium

100 -173 -280 2.5E-07 3.7E-06 1.154
130 -143 -226 0.000176 0.00255 0.9481
160 -113 -172 0.00850 0.1233 0.8499
190 -83.2 -118 0.1055 1.530 0.8002
220 -53.2 -63.7 0.6058 8.787 0.7840
250 -23.2 -9.7 2.180 31.62 0.7956
280 6.9 44.3 5.817 84.37 0.8357
310 36.9 98.3 12.73 184.6 0.9249
320 46.9 116 15.99 231.9 0.9789
340 66.9 152 24.32 352.7 1.188
355 81.9 179 32.43 470.4 1.732
360 86.9 188 35.55 515.6 2.300
Liquid 85.53 -187.62 -305.72 1 14.5 99.44
100 -173.15 -279.67 1 14.5 35.88
120 -153.15 -243.67 1 14.5 15.11
140 -133.15 -207.67 1 14.5 8.891
160 -113.15 -171.67 1 14.5 6.290
180 -93.15 -135.67 1 14.5 4.942
200 -73.15 -99.67 1 14.5 4.145
220 -53.15 -63.67 1 14.5 3.633
230.74 -42.41 -44.34 1 14.5 3.433
Gas 230.74 -42.41 -44.34 1 14.5 0.7857
240 -33.2 -27.67 1 14.5 0.7760
260 -13.2 8.33 1 14.5 0.7621
280 6.9 44.33 1 14.5 0.7534
300 26.9 80.33 1 14.5 0.7492
320 46.9 116 1 14.5 0.7467
340 66.9 152 1 14.5 0.7458
360 86.9 188 1 14.5 0.7453
400 127 260 1 14.5 0.7437
500 227 440 1 14.5 0.7301
600 327 620 1 14.5 0.7024
700 427 800 1 14.5 0.6658
800 527 980 1 14.5 0.6252
900 627 1160 1 14.5 0.5840
1000 727 1340 1 14.5 0.5434
Liquid 85.62 -187.53 -305.55 10 145 99.81
100 -173 -280 10 145 36.19
120 -153 -244 10 145 15.21
140 -133 -208 10 145 8.941
160 -113 -172 10 145 6.318
180 -93.2 -136 10 145 4.958
200 -73.2 -99.7 10 145 4.156
220 -53.2 -63.7 10 145 3.641
240 -33.2 -27.7 10 145 3.300
260 -13.2 8.3 10 145 3.064
280 6.9 44.3 10 145 2.909
300.09 26.94 80.49 10 145 2.811
Gas 300.09 26.94 80.49 10 145 0.8851
320 46.9 116 10 145 0.8299
340 66.9 152 10 145 0.8001
360 86.9 188 10 145 0.7824
400 127 260 10 145 0.7619
500 227 440 10 145 0.7321
600 327 620 10 145 0.6999
700 427 800 10 145 0.6626
800 527 980 10 145 0.6218
900 627 1160 10 145 0.5810
1000 727 1340 10 145 0.5407
Liquid 100 -173 -280 50 725 37.10
200 -73.2 -99.7 50 725 4.216
300 26.9 80.3 50 725 2.802
Supercritical
phase
400 127 260 50 725 1.305
500 227 440 50 725 0.8190
Liquid 86.45 -187 -304 100 1450 103.18
100 -173 -280 100 1450 39.46
120 -153 -244 100 1450 16.28
140 -133 -208 100 1450 9.433
160 -113 -172 100 1450 6.596
180 -93.2 -136 100 1450 5.139
200 -73.2 -99.7 100 1450 4.282
220 -53.2 -63.7 100 1450 3.735
240 -33.2 -27.7 100 1450 3.367
260 -13.2 8.3 100 1450 3.112
280 6.9 44.3 100 1450 2.934
300 26.9 80.3 100 1450 2.798
320 46.9 116 100 1450 2.691
340 66.9 152 100 1450 2.597
360 86.9 188 100 1450 2.504
Supercritical
phase
400 127 260 100 1450 2.282
500 227 440 100 1450 1.085
600 327 620 100 1450 0.8466
700 427 800 100 1450 0.7417
800 527 980 100 1450 0.6694
900 627 1160 100 1450 0.6098
1000 727 1340 100 1450 0.5586

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