How to Convert Liquid Oxygen to Gaseous Oxygen

Liquid oxygen is commonly used to help patients with reduced lung function breathe more easily, so it's important to know how much your loved one has access to. Not paying attention can lead to a very unpleasant time while waiting for new oxygen to be delivered, or even a trip to the hospital. If you know how much liquid oxygen is in a tank and how much gaseous oxygen you use per hour, you can easily figure how many hours of gaseous oxygen are left.

Things You'll Need

• Rate of oxygen flow per hour
• Remaining liters of liquid oxygen

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Instructions

• 1

  Divide the hourly flow rate of gaseous oxygen by 860. This gives you the amount of liquid oxygen you use per hour, since 1 liter of liquid oxygen equals 860 liters of gaseous oxygen.

• 2

  Divide the number of remaining liters of liquid oxygen by the amount of liquid oxygen used per hour. For example, if you use 0.002 liters of liquid oxygen each hour and you have 10 liters of liquid oxygen left, there are approximately 5,000 hours' worth of oxygen left in the tank--assuming no increase in the flow rate.

• 3

  Divide the number of hours left by 24 to get the number of days of oxygen available. For example, 5,000 hours divided by 24 hours equals just over 208 days.