Octane Thermal Properties

Overview

Engineering reference data for Octane Thermal Properties in thermodynamics.

Key Formulas

First Law

$\Delta U = Q - W$

Energy is conserved — heat added minus work done.

Ideal Gas Law

$PV = nRT$

Relates pressure, volume, and temperature of an ideal gas.

Heat Transfer

$Q = mc\Delta T$

Sensible heat transfer.

Carnot Efficiency

$\eta = 1 - T_C/T_H$

Maximum efficiency between two temperatures.

Variables

Symbol	Description	Unit
$U$	Internal energy	J
$Q$	Heat	J
$W$	Work	J
$P$	Pressure	Pa
$V$	Volume	m³
$T$	Temperature	K

Thermal Property Data

Unit Conversions

• Density: $1 \, \text{kg/m}^3 = 0.0624 \, \text{lb/ft}^3$
• Specific Heat: $1 \, \text{kJ/(kg·K)} = 0.2389 \, \text{Btu/(lb·°F)}$
• Thermal Conductivity: $1 \, \text{W/(m·K)} = 6.935 \, \frac{\text{Btu·in}}{\text{ft}^2·\text{h·°F}}$
• Dynamic Viscosity: $1 \, \text{Pa·s} \, (\text{N·s/m}^2) = 10 \, \text{Poise (P)} = 10^3 \, \text{centipoise (cP)}$ $1 \, \text{Pa·s} = 0.1020 \, \frac{\text{kp·s}}{\text{m}^2} = 0.6721 \, \frac{\text{lb}}{\text{ft·s}}$

Interactive Charts

References

• Original Source