n-Heptane

References

Equation of State

R. Span and W. Wagner. Equations of State for Technical Applications. II. Results for Nonpolar Fluids. Int. J. Thermophys., 24:41–109, 2003. doi:10.1023/A:1022310214958.

Ideal gas specific heat

M. Jaeschke and P. Schley. Ideal-Gas Thermodynamic Properties for Natural-Gas Applications. Int. J. Thermophys., 16(6):1381–1392, 1995. doi:10.1007/BF02083547.

Thermal Conductivity

M. J. Assael, I. Bogdanou, S. K. Mylona, M. L. Huber, R. A. Perkins, and V. Vesovic. Reference Correlation of the Thermal Conductivity of n-Heptane from the Triple Point to 600 K and up to 250 MPa. J. Phys. Chem. Ref. Data, 42(2):023101–1:9, 2013. doi:10.1063/1.4794091.

Viscosity

E. K. Michailidou, M. J. Assael, M. L. Huber, I. M. Abdulagatov, and R. A. Perkins. Reference Correlation of the Viscosity of n-Heptane from the Triple Point to 600 K and up to 248 MPa. J. Phys. Chem. Ref. Data, 43:023103, 2014. doi:10.1063/1.4875930.

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

nHeptane, Heptane, HEPTANE, N-HEPTANE, NC7H16, n-C7H16

Fluid Information

Parameter, Value

General

Molar mass [kg/mol]

0.100202

CAS number

142-82-5

ASHRAE class

UNKNOWN

Formula

\(C_{7}H_{16}\)

Acentric factor

0.349

InChI

InChI=1S/C7H16/c1-3-5-7-6-4-2/h3-7H2,1-2H3

InChIKey

IMNFDUFMRHMDMM-UHFFFAOYSA-N

SMILES

CCCCCCC

ChemSpider ID

8560

2D image

http://www.chemspider.com/ImagesHandler.ashx?id=8560

Limits

Maximum temperature [K]

600.0

Maximum pressure [Pa]

100000000.0

Triple point

Triple point temperature [K]

182.55

Triple point pressure [Pa]

0.17549028983207446

Critical point

Critical point temperature [K]

540.13

Critical point density [kg/m3]

231.99999999999997

Critical point density [mol/m3]

2315.3230474441625

Critical point pressure [Pa]

2736000.0

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-Heptane.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-Heptane1.png