Recycled air

[Thistle]

I was wathching Discovery Chanel last evening and some guys spoke about recycled air device. They said it was tested and it will go soon on the market. They also said that it requires special maintenance from the user but it can work.
I suppose that the concept is not new and that there are reported results.
Is anyboby familiar with the technology?
VV

 

[DEEP SEA]

I think they call them rebreathers!

 

[Walter]

Rebreathers have been around longer than SCUBA.

WWW™

 

[joewr]

The rebreather is used in lots of fields: hazardous environments, fire fighting, refineries.... They depend on something called a "molecular sieve", a powder that has the capability of removing carbon dioxide from a gas stream. Thus, they can be used to keep an air stream devoid of CO2, but they do not regenerate O2--so eventually you run out of that most vital of breathing components.

By the way, molecular sieves abound in our daily living. Most are synthetic--made from silica and alumina, two of the components of clay, dirt, sand...but there is a lot of processing before the raw materials become mole sieves. You probably use them when you wash clothes because they are used in some detergents as water softners. They are also used to keep gases or liquids dry--so sometimes they are in those little paper pouches that come with camera and scuba gear that keep the product dry in storage.

Just one of the wonders of modern chemistry--like Velveta cheese!

Joewr

 

[DiverCCRN]

Too bad I can't put Velveta in the scrubber powder....