In our previous blog, we discussed the formula used in calculating the total amount of Oxygen Required in Hospitals via Number of Beds. You can read the blog here: Calculating the Total Amount of Oxygen Required in Hospitals (absstem.com)
In this blog, we shall further discuss how hospitals or individuals can determine the Oxygen requirement, based on either the number of Oxygen Cylinders used or the amount of Liquid Oxygen used. This will help you as well as healthcare services to accurately calculate the oxygen requirements and ensure sufficient supply, especially while upgrading to an in-house PSA Oxygen Generator.
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Calculating the Oxygen Requirement of a Hospital using Oxygen Cylinders
Oxygen cylinders are often the primary source of medical oxygen in hospitals. To calculate oxygen consumption, it is important to understand the two main types of cylinders used in healthcare services:
Types of Oxygen Cylinders Used in Hospitals
There are two types of Oxygen Cylinders used in Hospitals:
- B-Type Cylinder (Portable)
- Volume: 10L water-holding capacity
- Total Gas Stored: 1500L (1.5 m³)
- Application: Portable, often used during internal movement of patients Within intra- hospital departments, such as from a normal bed to the ICU or OT.
- D-Type Cylinder (Jumbo)
- Volume: 46.7L water-holding capacity
- Total Gas Stored: 7000L (7 m³)
- Application: Fixed and typically used for oxygen supply to patients through hospital manifold systems.
Below chart showing the different type of oxygen cylinders used in hospital with their capital gas capacity at 150 bar pressure:
Formula:
For Example, Let’s take a 100-bed hospital using a daily average of 40 D-Type oxygen cylinders per day
Volume of Gas in a cylinder = 7m³
Volume of oxygen gas used in a day: 7 * 40 = 280m³
Hourly oxygen usage: 280m³ / 24 (Hours) = 11.67m³
Adjusting for peak demand using a 20% correction factor: 11.67 + 11.67 *20% = 14m³/hour
That means, If the hospital wants to install a PSA Oxygen Generator, its capacity should be a minimum 14m³/hr of Oxygen production, for continuous supply.
Calculating Oxygen Requirement of a Hospital Using Liquid Oxygen
Liquid oxygen is commonly used in larger hospitals due to its ability to store large amounts of oxygen in a compressed, liquid form.
For Example, Let’s take a 100-bed hospital using 200 L of Liquid Oxygen per day:
Converting Liquid to Gas: 200 *861 = 1,72,200 L or 172.2m3 of Oxygen gas per day
Hourly consumption: 179/24 = 7.5m3 of Oxygen per Hour
(1000 L of gas is equivalent to 1 cubic meter of gas)
Applying the 20% correction factor for peak demand: 7.5+ 7.5 *20% = 9m³/hour
That means, If the hospital wants to install a PSA oxygen generator, its capacity should be a minimum 9m³/hr of Oxygen production.
In the above two examples, we have understood that whatever be the current oxygen source, once the effective hourly oxygen consumption is known, one can easily understand the desired PSA Oxygen Generator to be installed.
By using either the number of oxygen cylinders or liquid oxygen consumption, hospitals can accurately calculate their oxygen requirement. These calculations are crucial for determining the right oxygen generation system, such as a PSA oxygen generator, to meet patient needs.
We hope this blog will help you in understanding how to calculate the total amount of oxygen required at a hospital when you are given either the number of oxygen cylinders used or the amount of Liquid Oxygen Consumed.
Whether you’re planning to upgrade your oxygen supply system or just need advice, do remember that we’re always here to help. Please feel free to get in touch with us through either our toll-free number 1800 3010 3394 or email us at info@absstem.com.
Refrences:-
Oxygen and Oxygen Equipment – Policy Article
Estimating the Oxygen Consumption in a Hospital During Covid-19 Pandemic
