Gas Expansion Calculator
Gas Expansion Calculator: Track Volume Changes With Temperature and Pressure
Combustion gases expand significantly as they heat up and change pressure while moving through ducts, stacks, and heat exchangers. This calculator applies the combined gas law to compute the new volume of a fixed quantity of gas after both pressure and temperature change.
The Formula
V2 = V1 × (P1/P2) × (T2/T1)
Worked Example
A gas parcel starts at 10 m³, 200 kPa, and 300 K, then moves to 100 kPa and 350 K.
V2 = 10 × (200/100) × (350/300) = 23.33 m³
How to Use This Calculator
- Enter the initial gas volume.
- Enter the initial pressure and temperature (Kelvin).
- Enter the final pressure and temperature (Kelvin).
- Click Calculate to get the new gas volume.
Related Calculations
Pair with the Gas Density Calculator to track how density changes alongside volume.