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Medical oxygen concentrators were developed in the late 1970s. Early manufacturers included Union Carbide and Bendix Corporation. [1] They were initially conceived of as a method of providing a continuous source of home oxygen without the use of heavy tanks and frequent deliveries. [2] Beginning in the 2000s, manufacturers developed portable ...
Oxygen concentrators are used widely for oxygen provision in healthcare applications, especially where liquid or pressurized oxygen is too dangerous or inconvenient, such as in homes or portable clinics, and can also provide an economical source of oxygen in industrial processes, where they are also known as oxygen gas generators or oxygen ...
Test bench for a miner's closed circuit self-rescuers. A self-contained self-rescue device, SCSR, self-contained self-rescuer, or air pack is a type of closed-circuit SCBA [1] with a portable oxygen source for providing breathable air when the surrounding atmosphere lacks oxygen or is contaminated with toxic gases, e.g. carbon monoxide.
Pulse dose (also called intermittent-flow or on-demand) portable oxygen concentrators are the smallest units, which may weigh as little as 2.3 kilograms (5 lb) Their small size enables the user to waste less of the energy gained from the treatment on carrying them. The unit administers a set volume (bolus) of oxygen enriched air at the start of ...
Some of the portables are actually less efficient in terms of power and weight than the larger 5 LPM concentrators. The pulse portable oxygen concentrators (those which have no continuous flow settings) typically make less than 1 liter per minute, but use demand or pulse flow to deliver oxygen only when the patient is inhaling and consume about ...
VPSA systems apply pressurized gas to the separation process and also apply a vacuum to the purge gas. VPSA systems, like one of the portable oxygen concentrators, are among the most efficient systems measured on customary industry indices, such as recovery (product gas out/product gas in) and productivity (product gas out/mass of sieve material).
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