Device and method for filling an enclosure with a pressurized fluid and then for emptying this enclosure, with recovery of the fluid

A method, comprising:

• supplying an enclosure with a fluid until a target pressure of the fluid in the enclosure is reached, wherein the supplying is performed from a first plurality of reservoirs at different pressures successively from a lowest pressure reservoir to a highest pressure reservoir;
• and
• then discharging the enclosure, wherein the discharging is performed by transferring fluid from the enclosure into a second plurality of reservoirs successively starting with a highest pressure reservoir and ending with a lowest pressure reservoir,
• wherein the second plurality of reservoirs is at least partially composed of reservoirs of the first plurality of reservoirs.

A method, comprising:

• supplying an enclosure with a fluid until a target pressure of the fluid in the enclosure is reached, wherein the supplying is performed from a first plurality of reservoirs at different pressures successively from a lowest pressure reservoir to a highest pressure reservoir;
• and
• then discharging the enclosure, wherein the discharging is performed by transferring fluid from the enclosure into a second plurality of reservoirs successively starting with a highest pressure reservoir and ending with a lowest pressure reservoir,
• wherein after the discharging, the second plurality of reservoirs is then used as a first plurality of reservoirs for supplying another enclosure.