METHOD FOR CONTROLLING INDOOR OXYGEN CONCENTRATION OF LARGE-SIZED FACILITY, AND LARGE-SIZED FACILITY CAPABLE OF CONTROLLING INDOOR OXYGEN CONCENTRATION

摘要

PROBLEM TO BE SOLVED: To provide a method for controlling indoor oxygen concentration of large-sized facilities and a large-sized facility, which is capable of controlling indoor oxygen concentration using the method. ;SOLUTION: An ordinary air-supply system, which supplies ordinary air and an adjusted air-supply system, which supplies air adjusted for oxygen concentration by means of a membrane separator are provided in parallel and connected to a mixing chamber, communicating with the indoor of the large-sized facility. In the adjusted air-supply system, a plurality of parallel circuits which are branched at every oxygen concentration is provided in the flow passage of the adjusted air taken out of the membrane separator and stop valves exclusively used for different oxygen concentrations are connected to the parallel circuits. According to the oxygen concentration required, only the stop valve of the corresponding parallel circuit is opened, and the required amount of adjusted air from the membrane separator and a required amount of ordinary air supplied from the ordinary air supplying system are joined in the mixing chamber.;COPYRIGHT: (C)2001,JPO