Abstract: Embodiments of the present invention provide a distributed networked ozonation system for ozonation of storage rooms containing fresh or perishable products, and also may be useful in other applications involving multiple ozonated zones. An exemplary embodiment uses a set of distributed ozone generators connected to a communication network. An exemplary ozone generator comprises an ozone sensor, an ozone-generating cell, and a controller, and also may comprise an air cooling unit with an ozone destruct air filter, so that the generator may be placed within an ozonated environment. The ozone level of the storage area may be under closed-loop feedback control. The controller may communicate with other controllers at the same site and with a site controller, which in turn may communicate with a remote controller.

Abstract: Refrigerated containers that contain continuously circulating air or oxygen-containing gas into which ozone is injected to preserve perishable food products that are susceptible to spoilage when stored for extended periods of time are disclosed. The ozone content of the circulating air is continuously monitored by an ozone sensor and adjustments to the amount and rate of ozone injection are continuously made by a controller on the basis of signals from the ozone sensor and other sensors.