Respiratory Therapy Formulas and Calculations

The Formula (Current Cylinder Pressure × Conversion factor) /Flow (L/min) = Duration of flow (min) ie: 1000 psi x 28 / 10 L/min = 28 minutes Calculate duration of LOX with 5 4 L at 15L/min Convert to volume of gas first: 5 4L of liquid x 860 L of gas/L of liquid = 4644 L of gas Then take into account the liter flow:

High Flow Calculations - WordPresscom

Oxygen Flow Formula •This formula lets you determine the oxygen flow to set if you have a target total flow and target FiO2 –An example of this is an entrainment device •Oxygen flow = (total flow) x (FiO2 –0 21) 0 79* •The 0 79 comes from the percentage of the FiO2 that is not accounted for by the oxygen in air (i e 1 00 –0 21)

EXAMPLE CALCULATIONS ASSOCIATED WITH THE MEASURMENT OF GASES

(Note that the oxygen was measured on a wet basis and should be corrected to dry conditions) Oxygen at reference conditions = measured oxygen x correction factor for moisture = 12 5 x 1 1 = 13 8 (dry) Oxygen correction factor = (21 – reference oxygen) (21 – measured oxygen, dry) = (21 – 11) (21 – 13 8) = 1 4

Oxygen Isotopes: measuring temperature and ice volume

Oxygen Isotopes are the major tool for paleoclimate reconstruction Three stable isotopes 16O: 99 76 17O: 0 04 18O: 0 20 Measured as δ18O: values, where standards are either Standard Mean Ocean Water (SMOW) or a marine carbonate (PDB) We'll take advantage of few simple properties of the isotopes of oxygen to measure T

South Coast Air Quality Management District

given oxygen concentration, which require that pollutant concentrations measured in the stack be adjusted or corrected to the appropriate oxygen level For example, pollutant concentrations for boilers, heaters, and ovens are generally corrected to 3 oxygen, whereas engine and turbine pollutant concentrations are corrected to 15 oxygen

Aeration 101 – Back to Basics - AWEA

• ‘y’ is the oxygen required for BOD Oxidation • Varies between 0 8 – 1 5 lbs O 2 / lb BOD • Depends on process type and operation • 1 0 – 1 2 lbs O 2 / lb BOD is typical • ‘z’ is the oxygen required for NH 3 Oxidation (nitrification) • Is assumed to be a constant 4 6 lbs O 2 / lb NH 3