Oxigraf - Oxygen Depletion Calculator

Oxygen Depletion Calculator - Metric Units

Calculate the volume (V_r m³) of the confined space.

Calculate the volume of the released gas (V_g) by multiplying the volume of the liquid nitrogen (in liters) or weight of solid carbon dioxide (in Kg) by the expansion ratio of LN (.682) or the inverse density of CO₂ (.552 m³/Kg).

Calculate the volume of available oxygen (V_o m³) as 0.2095*(V_r-V_g).

Calculate the % oxygen available to breathe as 100*V_o/V_r.

Oxygen Concentration Calculator
Room Length (meters)
Room Width (meters)
Room Height (meters)
Type of Spill (LN or CO2)
Amount of Spill (liters of LN2 or Kg of CO2)
Volume of Room. Volume of Released Gas. Volume of Available Oxygen. Percent Oxygen Available to Breathe.
Assumptions: Uniform mixing of LN or CO2 with room air. No pressure considerations taken. Spill is contained in the room.