n-Propane#

References#

Equation of State#

Eric W. Lemmon, Mark O. McLinden, and Wolfgang Wagner. Thermodynamic Properties of Propane. III. A Reference Equation of State for Temperatures from the Melting Line to 650 K and Pressures up to 1000 MPa. J. Chem. Eng. Data, 54:3141–3180, 2009. doi:10.1021/je900217v.

Thermal Conductivity#

Kenneth N. Marsh, Richard A. Perkins, and Maria L. V. Ramires. Measurement and Correlation of the Thermal Conductivity of Propane from 86 K to 600 K at Pressures to 70 MPa. J. Chem. Eng. Data, 47:932–940, 2002. doi:10.1021/je010001m.

Viscosity#

E. Vogel, C. Küchenmeister, E. Bich, and A. Laesecke. Reference Correlation of the Viscosity of Propane. J. Phys. Chem. Ref. Data, 27:947–970, 1998. 5. doi:10.1063/1.556025.

Melting Line#

Larry E. Reeves, Gene J. Scott, and Stanley E. Babb Jr. Melting Curves of Pressure Transmitting Fluids. J. Chem. Phys., 40:3662–3666, 1964. doi:10.1063/1.1725068.

Surface Tension#

A. Mulero, I. Cachadiña, and M. I. Parra. Recommended Correlations for the Surface Tension of Common Fluids. J. Phys. Chem. Ref. Data, 41(4):043105–1:13, 2012. doi:10.1063/1.4768782.

Aliases#

Propane, propane, R290, C3H8, PROPANE, N-PROPANE, NC3H8, n-C3H8

Molecular Structure#

n-Propane — 3D conformer (interactive: click and drag to rotate)

Fluid Information#

Parameter, Value

General

Molar mass [kg/mol]

0.04409562

CAS number

74-98-6

ASHRAE class

A3

Formula

C3H8

Acentric factor

0.1521

InChI

InChI=1S/C3H8/c1-3-2/h3H2,1-2H3

InChIKey

ATUOYWHBWRKTHZ-UHFFFAOYSA-N

SMILES

CCC

ChemSpider ID

6094

Limits

Maximum temperature [K]

650.0

Maximum pressure [Pa]

1000000000.0

Triple point

Triple point temperature [K]

85.525

Triple point pressure [Pa]

0.00017184840809308612

Critical point

Critical point temperature [K]

369.8900089509634

Critical point density [kg/m3]

220.47812749206838

Critical point density [mol/m3]

5000.000623464834

Critical point pressure [Pa]

4251165.328013042

REFPROP Validation Data#

Note

This figure compares the results generated from CoolProp and those generated from REFPROP. They are all results obtained in the form \(Y(T,\rho)\), where \(Y\) is the parameter of interest and which for all EOS is a direct evaluation of the EOS

You can download the script that generated the following figure here: (link to script), right-click the link and then save as… or the equivalent in your browser. You can also download this figure as a PDF.

../../_images/n-Propane.png

Consistency Plots#

The following figure shows all the flash routines that are available for this fluid. A red + is a failure of the flash routine, a black dot is a success. Hopefully you will only see black dots. The red curve is the maximum temperature curve, and the blue curve is the melting line if one is available for the fluid.

In this figure, we start off with a state point given by T,P and then we calculate each of the other possible output pairs in turn, and then try to re-calculate T,P from the new input pair. If we don’t arrive back at the original T,P values, there is a problem in the flash routine in CoolProp. For more information on how these figures were generated, see CoolProp.Plots.ConsistencyPlots

Note

You can download the script that generated the following figure here: (link to script), right-click the link and then save as… or the equivalent in your browser. You can also download this figure as a PDF.

../../_images/n-Propane1.png

Flash consistency (HEOS): 40 inconsistent, 1 exceptions, 0 bad-phase across 7 input pair(s).

Download full failure list (CSV)

Failing state points (sample, up to 20 per pair/class)

Pair

Class

Region

P [Pa]

T [K]

In1

Val1

In2

Val2

Error

DmolarHmolar

INCONSISTENT

1phase

0.000368689

85.525

Dmolar

16625.8

Hmolar

-8671.12

DmolarP

INCONSISTENT

1phase

1.46482

85.525

Dmolar

16625.8

P

1.46482

DmolarP

INCONSISTENT

1phase

0.689591

85.525

Dmolar

16625.8

P

0.689591

DmolarP

INCONSISTENT

1phase

14.0399

114.472

Dmolar

15951.5

P

14.0399

DmolarP

INCONSISTENT

1phase

29.8234

114.472

Dmolar

15951.5

P

29.8234

DmolarP

INCONSISTENT

1phase

0.0338703

99.9987

Dmolar

16286.2

P

0.0338703

DmolarP

INCONSISTENT

1phase

1.46482

114.472

Dmolar

15951.5

P

1.46482

DmolarP

INCONSISTENT

1phase

0.0338703

85.525

Dmolar

16625.8

P

0.0338703

DmolarP

INCONSISTENT

1phase

0.0719469

85.525

Dmolar

16625.8

P

0.0719469

DmolarP

INCONSISTENT

1phase

0.324637

99.9987

Dmolar

16286.2

P

0.324637

DmolarP

INCONSISTENT

1phase

0.0719469

99.9987

Dmolar

16286.2

P

0.0719469

DmolarP

INCONSISTENT

1phase

0.000173567

85.525

Dmolar

16625.8

P

0.000173567

DmolarP

INCONSISTENT

1phase

0.000783165

85.525

Dmolar

16625.8

P

0.000783165

DmolarP

INCONSISTENT

1phase

0.000368689

85.525

Dmolar

16625.8

P

0.000368689

DmolarP

INCONSISTENT

1phase

0.00353378

85.525

Dmolar

16625.8

P

0.00353378

DmolarP

INCONSISTENT

1phase

0.00166359

85.525

Dmolar

16625.8

P

0.00166359

DmolarP

INCONSISTENT

1phase

0.015945

85.525

Dmolar

16625.8

P

0.015945

DmolarP

INCONSISTENT

1phase

0.00750642

85.525

Dmolar

16625.8

P

0.00750642

DmolarP

INCONSISTENT

1phase

0.152829

99.9987

Dmolar

16286.2

P

0.152829

DmolarP

INCONSISTENT

1phase

0.152829

85.525

Dmolar

16625.8

P

0.152829

DmolarP

INCONSISTENT

1phase

0.689591

99.9987

Dmolar

16286.2

P

0.689591

DmolarSmolar

INCONSISTENT

1phase

0.000173567

85.525

Dmolar

16625.8

Smolar

-61.5537

DmolarSmolar

INCONSISTENT

1phase

0.000368689

85.525

Dmolar

16625.8

Smolar

-61.5537

DmolarT

INCONSISTENT

2phase

0.00025735

86.525

Dmolar

16602.1

T

86.525

DmolarT

INCONSISTENT

1phase

0.000368689

85.525

Dmolar

16625.8

T

85.525

DmolarT

INCONSISTENT

1phase

0.000173567

85.525

Dmolar

16625.8

T

85.525

DmolarUmolar

INCONSISTENT

1phase

0.000173567

85.525

Dmolar

16625.8

Umolar

-8671.12

DmolarUmolar

INCONSISTENT

1phase

0.000783165

85.525

Dmolar

16625.8

Umolar

-8671.12

DmolarUmolar

INCONSISTENT

1phase

0.00166359

85.525

Dmolar

16625.8

Umolar

-8671.12

DmolarUmolar

INCONSISTENT

1phase

0.000368689

85.525

Dmolar

16625.8

Umolar

-8671.12

HmolarSmolar

INCONSISTENT

1phase

0.000173567

85.525

Hmolar

-8671.12

Smolar

-61.5537

HmolarSmolar

INCONSISTENT

1phase

0.000368689

85.525

Hmolar

-8671.12

Smolar

-61.5537

HmolarSmolar

INCONSISTENT

2phase

0.00025735

86.525

Hmolar

-8586.63

Smolar

-60.5714

HmolarSmolar

INCONSISTENT

1phase

0.00166359

85.525

Hmolar

-8671.12

Smolar

-61.5537

SmolarT

EXCEPTION

1phase

0.000173567

85.525

Smolar

-61.5537

T

85.525

p is not a valid number

SmolarT

INCONSISTENT

1phase

0.152829

99.9987

Smolar

-48.3004

T

99.9987

SmolarT

INCONSISTENT

1phase

0.0719469

99.9987

Smolar

-48.3004

T

99.9987

SmolarT

INCONSISTENT

1phase

0.0338703

99.9987

Smolar

-48.3004

T

99.9987

SmolarT

INCONSISTENT

1phase

0.000368689

85.525

Smolar

-61.5537

T

85.525

SmolarT

INCONSISTENT

1phase

0.000783165

85.525

Smolar

-61.5537

T

85.525

Superancillary Plots#

The following figure shows the accuracy of the superancillary functions relative to extended precision calculations carried out in C++ with the teqp library. The results of the iterative calculations with REFPROP and CoolProp are also shown.

Note

You can download the script that generated the following figure here: (link to script), right-click the link and then save as… or the equivalent in your browser. You can also download this figure as a PDF.

../../_images/n-Propane2.png