Abstract: Methods and apparatus for producing a compressed fluid. Compressors are connected to a compressed fluid network and to a power source. The compressed fluid network's pressure is monitored by a pressure sensor. Depending on observed pressure of the compressed fluid network, the compressors are either switched on, off, or set to idling. Which compressors are switched is determined by an automatic device and is dependent upon various operating parameters of the compressors.

Abstract: The invention relates to a process for the preparation and delivery of ozonated water to at least one user point, according to which a storage buffer tank is provided for the ozonated water, and an upstream ozonation loop is provided, making it possible to feed the tank with ozonated water, the upstream ozonation loop comprising a component for controling the flow of water flowing in the loop. A fresh-water supply line is also provided, connected by its downstream part to the upstream ozonation loop and fitted with a component for interrupting the freshwater flow, the loop portion located between the tank and the connection point of the fresh-water supply line being fitted with a component for interrupting the recirculation flow upstream of the tank.