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2. Compressed-air energy storage - Wikipedia

   en.wikipedia.org/wiki/Compressed-air_energy_storage

   A pressurized air tank used to start a diesel generator set in Paris Metro. Compressed-air-energy storage (CAES) is a way to store energy for later use using compressed air. At a utility scale, energy generated during periods of low demand can be released during peak load periods. [1]

3. Buffer gas - Wikipedia

   en.wikipedia.org/wiki/Buffer_gas

   The buffer gas fills the spaces between seals in the compressor. This space is usually about 2 micrometres wide. [citation needed] The gas must be completely dry and free of any contaminants. Contaminants can potentially lodge in the space between the seal and cause metal to metal contact in the compressor, leading to compressor failure.

4. Cascade filling system - Wikipedia

   en.wikipedia.org/wiki/Cascade_filling_system

   Cascade storage is used at compressed natural gas (CNG) fueling stations. Typically three CNG tanks will be used, and a vehicle will first be fueled from one of them, which will result in an incomplete fill, perhaps to 2000 psig for a 3000 psig tank. The second and third tanks will bring the vehicle's tank closer to 3000 psi.

5. Grid energy storage - Wikipedia

   en.wikipedia.org/wiki/Grid_energy_storage

   This is called liquid air energy storage (LAES). [55] The air would be cooled to temperatures of −196 °C (−320.8 °F) to become liquid. Like with compressed air, heat is needed for the expansion step. In the case of LAES, low-grade industrial heat can be used for this. [43] Energy efficiency for LAES lies between 50% and 70%.

6. Compressed air - Wikipedia

   en.wikipedia.org/wiki/Compressed_air

   Compressed air is an important medium for the transfer of energy in industrial processes and is used for power tools such as air hammers, drills, wrenches, and others, as well as to atomize paint, to operate air cylinders for automation, and can also be used to propel vehicles. Brakes applied by compressed air made large railway trains safer ...

7. Compressed-air vehicle - Wikipedia

   en.wikipedia.org/wiki/Compressed-air_vehicle

   The tanks must be designed to safety standards appropriate for a pressure vessel, such as ISO 11439. [6]The pressure vessels or air storage tanks that can be used in compressed-air vehicles can be made for low pressure (9 atm (130 psi)) or high (more than 240 atm (3,500 psi)), and can be made of composite materials like thermoplastic and fiber-reinforced thermoplastics, [7] [8] that means that ...