It's no secret that hospitals consume a massive amount of oxygen. As a result, multiple oxygen supply methods are necessary to keep up with the demand. But what are some of the more commonly used methods, and what sets them apart from one another? Today, we'll be diving into the details.
First up is oxygen cylinders. These are portable tanks filled with compressed oxygen that can be moved around the hospital as needed. They are typically used for emergency situations or when a patient needs to be transported. Oxygen cylinders are convenient and reliable, but they are also heavy and require regular refilling.
Next, we have oxygen concentrators. These machines use electricity to separate oxygen from ambient air, producing a higher concentration of oxygen that can be delivered through a nasal cannula or mask. Oxygen concentrators are more cost-effective over the long term since they don't require refilling, but they are less portable than oxygen cylinders.
Another method is liquid oxygen supply. This involves storing oxygen in a liquid state at a very low temperature, which allows for a high volume of oxygen to be stored in a small space. Liquid oxygen supply is ideal for hospitals with limited space, but it is more expensive and requires specialized equipment.
Last but not least, we have oxygen pipeline systems. This entails installing a network of pipes throughout the hospital that deliver oxygen directly to patient rooms and other areas as needed. Oxygen pipeline systems are the most efficient and cost-effective method, but they require extensive planning and installation.
Overall, each supply method has its own unique benefits and drawbacks. Hospitals must weigh these factors carefully to determine which method is the best fit for their needs.
Hospitals rely on bottled oxygen supply as the most basic way of providing patients with oxygen. Oxygen cylinders are transported to the necessary wards and utilized directly by patients. However, this method of oxygen distribution has proven to be difficult to manage, as multiple cylinders are often placed on each floor of the hospital building for convenience, posing a risk of fire hazards. This supply method was widely adopted by hospitals in China during the 1970s and 1980s, but is now primarily only used in smaller county and township hospitals.
When it comes to supplying medical oxygen, there are various methods available, each with its unique principles. However, the electrochemical oxygen production method and low-temperature air separation method are complex processes and require a considerable amount of space for equipment installation. Thus, the most widely used method for medical oxygen production is the molecular sieve pressure swing adsorption (PSA) method. This method utilizes 5A zeolite molecular sieve as an adsorbent, which has a cage structure with well-developed crystal caves. As the zeolite adsorbs nitrogen from the compressed air, the oxygen gas passes through and is collected for medical use.
The supply of liquid oxygen is crucial, and it can be achieved through the utilization of liquid oxygen storage tanks or oxygen cylinder groups. These storage methods allow for the centralized distribution of gas through a network of pipes, with a preference for liquid oxygen storage tanks due to their widespread usage. The use of this method offers various benefits compared to bottled oxygen supply, including a more stable and concentrated source of gas. It proves to be highly convenient for patients and exhibits improved fire safety measures. Consequently, numerous hospitals have adopted this method, even transforming existing ward buildings that initially relied on bottled oxygen to utilize this efficient supply system.