Question

Write only 70 words on " Oxygen Generator.​

Answer 1

Answer:

Oxygen Concentrators

Oxygen concentrators (sometimes referred to as oxygen generators) can be used as an alternative to compressed gas cylinders. They produce 90–95% oxygen from room air, by absorbing nitrogen. Portable units generally produce 4–10 l/min (Fig. 1.4), and larger devices, producing up to 25 l/min and capable of supplying several anaesthetic machines can also be obtained. All of these devices are electrically operated, so a power failure will result in a failure of oxygen supply unless a standby generator, or a battery backup and power inverter are available. Alternatively, a cylinder of oxygen can be retained for emergency use. Since the flow of gas from a portable machine is relatively low, the emergency oxygen button on an anaesthetic machine will not function correctly, but turning up the flow meter can rapidly flush anaesthetic vapour from a breathing system. The low flow and lower pressure of gas supplied from these units limits their use with some ventilators, and with larger animals. However the small, relatively portable units are well-suited for use in small procedure rooms, where transport and storage of oxygen cylinders can be a problem. Newer devices are noticeably quieter than older models, and noise is not an issue if a larger unit is sited away from the immediate theatre area. The purchase cost of this equipment has fallen dramatically in recent years, and they can now be considered an economical and convenient alternative to compressed gas cylinders.