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Combustion Air Calculator

Formula

The formula to calculate the required combustion air (CA) is:

$CA = \frac{V \cdot A \cdot T}{P \cdot R \cdot Z}$

Where:

$CA$ is the required combustion air
$V$ is the volume of the combustion process
$A$ is the air-to-fuel ratio
$T$ is the temperature of the combustion process
$P$ is the pressure of the combustion process
$R$ is the gas constant
$Z$ is the compressibility factor

Definition

Combustion Air: The air necessary for the process of combustion to occur. It provides the oxygen needed for the chemical reaction that releases heat and light energy.

Example

Let's say the volume of the combustion process (V) is 2 m³, the air-to-fuel ratio (A) is 15, the temperature of the combustion process (T) is 1000 K, the pressure of the combustion process (P) is 101325 Pa, the gas constant (R) is 287 J/kg·K, and the compressibility factor (Z) is 1. Using the formula:

$CA = \frac{2 \cdot 15 \cdot 1000}{101325 \cdot 287 \cdot 1}$

We get:

$CA \approx 0.00104 \, \text{m³}$

So, the required combustion air is approximately 0.00104 m³.