Container refrigeration machinery supplier Daikin Reefer has introduced Active CA, a device that will create a controlled atmosphere (CA) inside refrigerated containers transporting perishable goods.
The Active CA device is capable of slowing down the ageing process that food and other sensitive perishable products undergo during transit, thereby allowing them to be transported in better condition for longer periods of time and extended shelf life.
The system is claimed to be developed based on vacuum pressure swing adsorption (VPSA), an active atmosphere separation technology that has the ability to create the optimal controlled atmosphere very quickly.
By using mineral adsorbent zeolite, VPSA captures a large quantity of nitrogen from the air and transfer it into the reefer container, allowing oxygen levels to be quickly reduced by dilution, without the need for additional gas.
Daikin claims that its new technology uses cargo respiration to maintain the container’s carbon dioxide level, alongside an automatic ventilation control, making the unit simple and economical to run.
Designed to be compact, the Active CA system can be quickly installed on refrigerated container units.

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By GlobalDataThe Active CA’s oxygen-conserving LiteTEC-5X component’s design was adapted from Daikin’s oxygen concentrator, which was developed for use in the medical industry.
Daikin has already supplied an international shipping line with 50 of the new Active CA machines, which are scheduled to be installed on the customer’s reefer containers from the end of February.