Abstract: An environmental control system (ECS) for an aircraft may include a mixing diffuser configured to admit a stream of cold air and a stream of hot air and a reheater-condenser fluidly coupled with an output end of the mixing diffuser. The mixing diffuser may include a diffuser cone with a plurality of holes configured to allow passage of hot air into the stream of cold air so that the cold air and the hot air are combined to produce a mixed airstream. The reheater-condenser may include mixing tabs configured to produce further mixing of the mixed airstream.

Abstract: The present invention provides a system and method for generation of nitrogen enriched air for inerting aircraft fuels tanks. One embodiment of the present invention includes a duct assembly; a primary heat exchanger; a gas generating system heat exchanger; a first temperature sensor; a second temperature sensor; a controller monitor; a valve; an air separation module assembly having a primary module and a secondary module; at least one flow control orifice; and a pressure sensor. The present invention utilizes a minimal complement of components and streamlined processes, thus minimizing structural and operational costs while optimizing performance and safety features.