Gas Properties Oxygen

Reference data and engineering information about gas properties oxygen for combustion applications.

gaspropertiesoxygenData Table

Overview

Engineering reference data for Gas Properties Oxygen in combustion engineering.

Key Formulas

Heat Release

$Q = \dot{m} \cdot HV$

Fuel energy release rate.

Air-Fuel Ratio

$AF = \frac{m_{air}}{m_{fuel}}$

Mass of air per mass of fuel.

Excess Air

$EA = \frac{O_2}{21 - O_2} \times 100\%$

From flue gas oxygen measurement.

Variables

Symbol	Description	Unit
$Q$	Heat release rate	W
$\dot{m}$	Mass flow rate	kg/s
$HV$	Heating value	J/kg
$AF$	Air-fuel ratio	—

Properties

Oxygen exhibits distinct thermodynamic properties under standard conditions (25°C, 1 atm).

3 rows

Thermodynamic properties of Oxygen (O₂) at 25°C and 1 atm.
Property	Value(kJ/kg·K)	Unit
Specific Enthalpy (h)	918.5	kJ/kg
Specific Internal Energy (u)	657.1	kJ/kg
Specific Entropy (s)	6.413	kJ/kg·K

Source: Standard engineering reference values

Note: The values provided are specific properties (per unit mass) at the stated standard conditions. The specific heat ratio ( $\gamma = c_p/c_v$ ) for oxygen is approximately 1.395 at room temperature.

References

Original Source

Source: engineeringtoolbox.com