Jet Engines
Air Conditioning
Eco Village
Compressed air is breathed in low pressure through an air line by underwater divers, firefighters, mine rescue workers, and industrial workers in hazardous atmospheres.
In Europe, 10 percent of all industrial electricity consumption is to produce compressed air—amounting to 80 terawatt hours consumption per year.
Air compression is comparable to the rechargeable lead-acid battery in terms of energy density, but is much cleaner in terms of life-cycle assessment. Compressed air can transfer power at very high flux rates, which supplies the acceleration and deceleration of hybrid vehicles.
Compressed air systems have advantages over conventional batteries including longer lifetime. Compressed air costs are potentially lower; however advanced pressure vessels are costly to develop and safety-test and at present are more expensive than mass-produced batteries.