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To convert from / to / ... (L 2 bar/mol 2) b (L/mol) Acetic acid: 17.7098 ... [2] 44.71 0.2442 Oxygen: 1.382 0.03186 Ozone [2] 3.570 0.0487
The standard liter per minute (SLM or SLPM) is a unit of (molar or) mass flow rate of a gas at standard conditions for temperature and pressure (STP), which is most commonly practiced in the United States, whereas European practice revolves around the normal litre per minute (NLPM). [1]
The endurance of the cylinder can be calculated from the volume, pressure and breathing rate of the user. The formula: volume (in liters) × pressure (in bars) / 40 (litres per minute) - 10 minutes (the 10 minutes is a safety margin, or reserve), so a 6-liter cylinder, of 300 bar, is 6 × 300 / 40 - 10 = 35 minutes working duration.
Large oxygen cylinders hold a volume of 6,500 litres (230 cu ft) and can last about two days at a flow rate of 2 litres per minute (LPM). A small portable M6 (B) cylinder holds 164 or 170 litres (5.8 or 6.0 cu ft) and weighs about 1.3 to 1.6 kilograms (2.9 to 3.5 lb). [62]
Before an NRB is placed on the patient, the reservoir bag is inflated to greater than two-thirds full of oxygen, at a rate of 15 liters per minute (lpm). [1] Approximately ¹⁄₃ of the oxygen from the reservoir is depleted as the patient inhales, and it is then replaced by the flow from the O 2 supply. If the bag becomes completely deflated ...
2: minutes Pressure during change-over = 30/10+1 = 4: bar Gas consumption during change-over = 40 x 4 x 2 = 320: litres Ascent time from 30m at 10m/min = 3: minutes Average pressure during ascent = 15/10+1 = 2.5: bar Gas consumption during ascent = 40 x 2.5 x 3 = 300: litres Decompression stop for 6 minutes at 3 m: Pressure during stop = 3/10 ...
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The average total lung capacity of an adult human male is about 6 litres of air. [1] Tidal breathing is normal, resting breathing; the tidal volume is the volume of air that is inhaled or exhaled in only a single such breath. The average human respiratory rate is 30–60 breaths per minute at birth, [2] decreasing to 12–20 breaths per minute ...