Ethane C2H6 Thermal Conductivity Temperature Pressure

Overview

Engineering reference data for Ethane C2H6 Thermal Conductivity Temperature Pressure in fluid mechanics.

Key Formulas

Reynolds Number

$Re = \frac{\rho v D}{\mu}$

Ratio of inertial to viscous forces — determines flow regime.

Bernoulli's Equation

$P + \frac{1}{2}\rho v^2 + \rho g h = \text{const}$

Conservation of energy for steady, inviscid, incompressible flow.

Continuity Equation

$A_1 v_1 = A_2 v_2$

Conservation of mass for incompressible flow.

Darcy-Weisbach

$\Delta P = f \frac{L}{D} \frac{\rho v^2}{2}$

Pressure drop due to friction in a pipe.

Variables

Symbol	Description	Unit
$Re$	Reynolds number	—
$\rho$	Fluid density	kg/m³
$v$	Flow velocity	m/s
$D$	Characteristic dimension	m
$\mu$	Dynamic viscosity	Pa·s
$P$	Pressure	Pa
$f$	Darcy friction factor	—

Additional Notes

Thermal Conductivity Data Table (1 bara)

The following table provides thermal conductivity values for ethane at approximately 1 bara (14.5 psia) pressure across a range of temperatures for both liquid and gas phases.

Unit Definitions and Conversions

• SI Unit: $\text{W/(m·K)}$ or milliwatt per meter per kelvin, $\text{mW/(m·K)}$.
• Imperial Units:
  • $\text{Btu(IT)/(h·ft·°F)}$: British thermal unit (IT) per hour per foot per degree Fahrenheit.
  • $\text{(Btu(IT)·in)/(h·ft}^2\text{·°F)}$: Inch-based unit for conductivity.
  • $\text{kcal(IT)/(h·m·K)}$: Kilocalorie (IT) per hour per meter per kelvin.

Phase Behavior Note

The thermal conductivity of ethane is highly dependent on its phase (liquid or gas) and proximity to the critical point. The data shows a significant drop in conductivity upon vaporization at constant temperature. For example, at 184.33 K, the liquid conductivity (~167 mW/(m·K)) is nearly 18 times higher than the vapor conductivity (~9.5 mW/(m·K)). Values generally increase with temperature in the gas phase and decrease in the liquid phase.

Interactive Charts

References

• Original Source