Abstract: An ozone sterilizer includes a generator capable of generating a gas containing at least about 10% by weight ozone, a holding tank, a humidification chamber for receiving the ozonated gas and humidifying it to form a sterilant including at least about 8% by weight ozone at a humidity of at least about 60%, a vent for bleeding sterilant from the humidification chamber over a first catalyst, a sterilization chamber for receiving a controlled flow of sterilant which is in fluid communication with a pump for evacuating the sterilization chamber over a second catalyst, a vent for bleeding the sterilant from the sterilization chamber and a heater for providing warm air drawn into the sterilization chamber by the pump.

Abstract: An ozone generating apparatus includes an ozone generator having concentric electrodes and a means for generating a corona discharge between the electrodes, a pump for recirculating a portion of the ozone-containing gas leaving the generator through a conduit which is configured to receive a portion of the ozone containing gas, and a heat exchanger for cooling the recirculated portion of the ozone-containing gas. An oxygen-containing gas is also introduced to the heat exchanger and combined with the recirculated gas portion to form a feed gas which is chilled in the heat exchanger and then introduced into the generator.