Coating of the ecs primary heat exchanger (phx) with low temperature catalyst for ozone and/or volatile organic compounds (voc) and/or carbon monoxide conversion
AssigneeHoneywell International Inc.
InventorsRalf Von Frieling, Jan Ludvik
Life of this patent
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Abstract
A heat exchanger assembly includes a main heat exchanger that receives a main hot air; a secondary heat exchanger operatively adjacent to the main heat exchanger; wherein the secondary heat exchanger receives a secondary hot air; wherein the main hot air and the secondary hot air are from two different, direct air sources; wherein a hot air channel of only one of the main and the secondary heat exchangers includes a catalytic coating; and a temperature control that controls the temperature of only one of the main hot air and the secondary hot air into the hot air channel.
Claims20
An environmental control system, comprising:
- a first air management subsystem having:
- a first heat exchanger assembly that includes a first main heat exchanger and a first secondary heat exchanger;
- wherein only one of the first main and first secondary heat exchangers have a catalytic coating;
- wherein the first main and the first secondary heat exchangers receive an ambient air;
- wherein the first main heat exchanger receives a first hot air;
- wherein the first secondary heat exchanger receives a second hot air;
- a first air cycle machine that produces the first hot air into the first main heat exchanger assembly and that produces a first conditioned air to a first enclosed environment;
- a second air management subsystem having:
- a second heat exchanger assembly that includes a second main heat exchanger and a second secondary heat exchanger;
- wherein only one of the second main and second secondary heat exchangers have a catalytic coating;
- wherein the second main and the second secondary heat exchangers receive an ambient air;
- wherein the second main heat exchanger receives the first hot air;
- wherein the second secondary heat exchanger receives the first hot air;
- a second air cycle machine downstream of the second secondary heat exchanger and that produces a second conditioned air to the second main heat exchanger and further to a second enclosed environment.
A heat exchanger assembly, comprising:
- a main heat exchanger that receives a main hot air;
- a secondary heat exchanger operatively adjacent to the main heat exchanger;
- wherein the secondary heat exchanger receives a secondary hot air;
- wherein the main hot air and the secondary hot air are from two different, direct air sources:
- wherein a hot air channel of only one of the main and the secondary heat exchangers includes a catalytic coating;
- and
- a temperature control that controls the temperature of only one of the main hot air and the secondary hot air into the hot air channel.
A heat exchanger assembly, comprising:
- a main heat exchanger that receives a main hot air and discharges a used cool air;
- a primary heat exchanger in contact with the main heat exchanger, wherein the primary heat exchanger includes:
- a plurality of hot air channels that receive a primary hot air;
- a plurality of cold air channels that receive the used cool air from the main heat exchanger;
- wherein the hot air channels are disposed perpendicular to the cold air channels;
- a catalytic coating that coats at least one of the hot air channels and does not coat the main heat exchanger;
- wherein the catalytic coating removes, from the primary hot air, at least one of ozone and hydrocarbons and carbon monoxide when the primary hot air is between 30° C. and 250° C.
Dependencies are inferred from the claim text.