Hamilton Sundstrand Space Systems International, Inc.

Carrier Corporation

Hamilton Sundstrand Corporation

Catherine Thibaud-Erkey

Timothy A Nalette

Timothy N Obee

Stephen O Hay

Eric W Adams

Malcolm N Fleming, Jr

William C Chadwick

Leland G Brandes

A method and apparatus are disclosed for controlling a concentration of carbon dioxide in a gaseous atmosphere within a closed environment of a refrigerated transport container to maintain the concentration of carbon dioxide therein at a desired level. A carbon dioxide scrubber apparatus operates alternately in an adsorption mode and a regeneration mode. When a perishable produce is stowed in the closed environment, for example in a cargo box of a refrigerated transport container, the concentration of carbon dioxide may be maintain at a desired level to retard ripening of the perishable produce.

Control of atmosphere within a closed environment

A regenerative carbon dioxide removal system () is provided onboard the container () through which air from within the cargo box () may be circulated for removing at least a portion of the carbon dioxide present in the air. The regenerative carbon dioxide removal system () includes a scrubber module () containing a carbon dioxide absorbent material (), and an actuator () for moving the scrubber module () to pass the carbon dioxide absorbent material () alternately between a first flow of air () to be cleaned drawn by the evaporator fan () from within the cargo box (), and a second flow of air () drawn from an environment outside the cargo box for regenerating the carbon dioxide adsorbent material () by removing collected carbon dioxide from the carbon dioxide adsorbent material ().

Scrubber system with moving adsorbent bed

A catalyst includes a platinum coating deposited on a silica support. The support has an average surface area between about 100 m/g and about 120 m/g. The platinum coating is between about 5 wt % and about 15 wt % of the catalyst. The combination of the selected surface area, silica support, and selected amount of platinum coating provides a catalytic activation temperature below 200&#xb0; C. and avoids the formation of NO.

Selective catalytic oxidation of ammonia to water and nitrogen

A catalyst includes a platinum coating deposited on a silica support. The support has an average surface area between about 100 m/g and about 120 m/g. The platinum coating is between about 5 wt % and about l5 wt % of the catalyst. The combination of the selected surface area, silica support, and selected amount of platinum coating provides a catalytic activation temperature below 200&#xb0; C. and avoids the formation of NO.

An assembly for removing carbon dioxide and water from a flow stream includes a housing that defines an inlet and an outlet. A CO sorbent sheet is disposed within the housing and includes integrally formed airflow passages and support structures. The CO sorbent sheet is encapsulated within a porous metal that is dimensionally stable and increases the rigidity and durability of the CO sorbent sheet.

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South Windsor, CT, United States of America

Catherine Thibaud-Erkey