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Time： 2024-01-16 17:11:45
Although scuba divers may appear to be “free as a fish,” they actually carry quite a lot of equipment on their backs. The Avelo system is designed to help with this, as it moves the BC function to the air reservoir, making the former unnecessary.
Typically, in addition to a wetsuit, fins, mask, and snorkel, the diver will wear equipment that includes a compressed air tank, regulator, weight belt, and buoyancy compensation device (BCD).
The latter is in the form of a large inflatable vest with a yoke for neutral buoyancy. If divers need to increase their buoyancy, they pump some of the air from the tank into the buoyancy compensator – they reduce buoyancy by expelling air from the buoyancy compensator into the water.
Throughout the dive, as the tank becomes more and more empty, it becomes more and more buoyant. Blowing out the BCD helps divers compensate for this, although they also have to put considerable weight on the strap to prevent sudden ascent.
The Avelo system is claimed to eliminate the need for a BCD and significantly reduce the weight required. It is also said to make it easier to maintain neutral buoyancy.
The device still contains a water tank, but this tank consists of a carbon fiber shell with an inflatable bladder inside. The electric pump and purge valve are on one side of the tank, and the battery is on the other. All components are mounted on a backpack platform, as is the case with traditional diving cylinders and buoyancy compensators.
Before diving, the bladder is inflated with a standard compressor to a maximum pressure of 4350 psi (300 bar). At this point, the bladder fills the inside of the reservoir. Once divers are in the water and ready to dive, they gradually pump water into the tank. When the bladder is replaced with water from the bottom, the bladder shrinks to the top of the reservoir, at the same time, the added water makes the reservoir heavier, reducing buoyancy.
As the dive continues and the air in the bladder is depleted, the diver simply pumps in more water to counteract the increase in buoyancy. On the other hand, if they want to increase their buoyancy, they simply pump some water out of the tank.
Among other things, the Avelo system is said to allow divers to stay underwater longer because some of their air supply is not redirected to the buoyancy compensator. The absence of a buoyancy compensator should also make them more streamlined, allowing them to move through the water more easily.
We are told that one charge is enough for 7-10 dives for advanced users or 3-4 dives for those who are just learning. It is reported that if the battery runs out during a dive, there will be no immediate effect, although divers will gradually become more buoyant – at a rate of about 1 lb (0.5 kg) every 15 to 20 minutes – as they empty the air tank in car. .
Needless to say, the Avelo system is not something you need to buy and figure out on your own. For this reason, Avelo Corporation is inviting interested individuals to register for one of its training sessions in Maui, which will take place during the next year. Commercial availability is due in 2024 – prices will “compete with standard scuba systems”.