An Environmental Control System (ECS) for an aircraft includes a ram air system having a ram inlet and a ram outlet. The ECS includes a cabin air compressor motor, a diverter valve, and a dedicated outlet. The cabin air compressor motor has a motor inlet passage and a motor outlet passage with the motor inlet passage being coupled to the ram inlet. The diverter valve includes a first diverter inlet, a first diverter outlet, and a second diverter outlet. The first diverter inlet is coupled to the motor outlet passage. The dedicated outlet is connected to the first diverter outlet in a flight mode of operation of the aircraft and the ram outlet is connected to the second diverter outlet in a ground mode of operation of the aircraft.

A compact lightweight air filtration system is disclosed. The air filtration system includes a hydrophobic particulate/coalescing filter and a cleanable ozone converter housed in a housing with an inlet and an outlet. Air flowing from the inlet to the outlet passes through the particulate/coalescing filter element and then the cleanable ozone converter to remove particulates, aerosols, liquids, and ozone.

A system and method for determining a remaining useful life of an ozone converter of an aircraft are disclosed. The method comprises using flight data of the aircraft and location-based ozone exposure data to determining a cumulative ozone exposure for the ozone converter. The cumulative ozone exposure and a predetermined ozone exposure capacity of the ozone converter are used to determine a remaining useful life of the ozone converter. Based on the determined remaining useful life of the ozone converter, an indication that the ozone converter is approaching an end-of-useful-life condition is provided.

In some examples, a composition includes a hydrocarbon and ozone catalyst. The hydrocarbon and ozone catalyst includes one or more catalytic layers overlying a substrate. The one or more catalytic layers include a non-catalytic component, an ozone catalytic component, and a hydrocarbon catalytic component. The non-catalytic component includes titanium oxide. The ozone catalytic component includes cobalt oxide. The hydrocarbon catalytic component includes platinum. An outermost layer of the one or more catalytic layers includes the hydrocarbon catalytic component distributed in the non-catalytic component.

Heat exchanger of an air-conditioning system of a cabin of a transport vehicle, comprising: a primary circuit supplied by a first air flow (169), a secondary circuit supplied by a second air flow (168), a casing (161) defining an air-circulation enclosure (162), a primary circuit inlet box (164) allowing entry into said air-circulation enclosure, and a primary circuit outlet box (165) allowing exit from the air-circulation enclosure, characterized in that said inlet box (164) is mounted removably on said casing (161), and in that it houses a three-dimensional structure (163) forming a catalytic and/or adsorbent support for treating the air of said primary circuit, and a means for distributing said first air flow into said heat-exchange matrix.

An Environmental Control System (ECS) for an aircraft includes a ram air system having a ram inlet and a ram outlet. The ECS includes a cabin air compressor motor, a diverter valve, and a dedicated outlet. The cabin air compressor motor has a motor inlet passage and a motor outlet passage with the motor inlet passage being coupled to the ram inlet. The diverter valve includes a first diverter inlet, a first diverter outlet, and a second diverter outlet. The first diverter inlet is coupled to the motor outlet passage. The dedicated outlet is connected to the first diverter outlet in a flight mode of operation of the aircraft and the ram outlet is connected to the second diverter outlet in a ground mode of operation of the aircraft.

A system and method for determining a remaining useful life of an ozone converter of an aircraft are disclosed. The method comprises using flight data of the aircraft and location-based ozone exposure data to determining a cumulative ozone exposure for the ozone converter. The cumulative ozone exposure and a predetermined ozone exposure capacity of the ozone converter are used to determine a remaining useful life of the ozone converter. Based on the determined remaining useful life of the ozone converter, an indication that the ozone converter is approaching an end-of-useful-life condition is provided.

An environmental control system of an aircraft includes a ram air circuit including a ram air shell having at least one heat exchanger positioned therein, a dehumidification system arranged in fluid communication with the ram air circuit, and a compressing device arranged in fluid communication with the ram air circuit and the dehumidification system. The compression device includes a compressor and a first turbine coupled to one another via a shaft. During operation of the first turbine, work is extracted from a first medium within the first turbine to power the compressor. At an outlet of the first turbine, a temperature of the first medium is above freezing and at least a portion of the moisture within the first medium is condensed.

A method is disclosed for removing ozone from a gas. According to this method, the gas is contacted with an adsorbent that includes a transition metal oxide or metal organic framework to form a treated gas. The treated gas is contacted with a noble metal catalyst to catalytically decompose ozone in the treated gas, thereby forming an ozone-depleted treated gas.

An ozone converter includes an outer housing having an inlet and an outlet and a core disposed within the outer housing, the core including a central passageway formed therein and passing thorough the core. The converter also includes an ozone control assembly that allows air to pass through the central passageway in an closed mode and prevents flow thorough the central passageway in an open mode, the assembly including cover flaps that cover a portion of the core in the closed mode and that do not cover the core in the open mode.