Many health professionals recommend that those with oxygen deficiency, heart, or lung problems discuss these issues with their doctor before flying. These conditions still occur though, particularly in individuals who already struggle with getting or keeping oxygen in their bodies. For the majority, these lesser quantities rarely lead to oxygen deficiency conditions like hypoxia (low oxygen quantities in your muscles and organs) or hypoxemia (low oxygen quantities in your blood). Generally, these lower levels are tolerable though.
Because of this, the oxygen levels are more akin to those found high in the mountains rather than those found at or just above sea level where most people exist the majority of their time. Instead, air cabin pressure requirements for safety and comfort reasons generally relate to higher elevations in the low to middle thousands of feet. The general oxygen content of the aircraft is lower than what many individuals would consider normal, but it has nothing to do with the gaspers. The reality is that the oxygen content in the air is the same with or without the use of the gaspers. One notion is that pilots limit the amount of oxygen that flows out of the gaspers.
There are a couple of common myths or misconceptions regarding the air that gaspers release.
The recirculated cabin air is also completely disposed of far more often on a plane than any other indoor location a person might typically frequent, so the air people begin with before takeoff is not the exact air as they end up with once they land. All the air that comes out of the gaspers, whether fresh or not, is first filtered then disbursed. So what exactly is the makeup of the air coming out of those little nozzles? Normally, it is a mixture of fresh air from outside and reused air from the current supply found on the plane. Generally, the air coming out of a gasper is cleaner and fresher than the surrounding air is then thanks to these filtration systems despite being originally largely pulled from the surrounding air. Most HEPA filtration systems are rated effective at removing a vast majority of airborne contaminants. HEPA units are specifically designed to help clean many pathogens out of the air along with other pollutants. Most planes use HEPA filters, which stands for high efficiency particulate air filters. Contrary to popular belief, gasper air is quite clean air, even if it is mostly or completely from recirculated cabin air, because of these high-tech filtration systems. The small gaspers overhead of each passenger now also dispense air that has been run through a top-notch filtration system on most planes as well.
CREATIVE A320 AMAZON FULL
Planes are already tight, enclosed spaces full of many people and things so having good air flow helps ensure that any pathogens present on the plane are less likely and able to spread and contaminate everyone on board. Stagnant, unmoving air often creates an environment in which bacteria, viruses, and molds thrive. Fresh AirĪnother aspect of gaspers beyond providing some comfort to individual passengers is that they help keep air circulating and fresh throughout the cabin as well. Turning off the gaspers via the main switch may help save precious bleed air supply which aids in making safe take-offs and climbs to altitude, but it is not healthy or safe to have them off for long.
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