Cabbages near the upper areas of the unit cooler were exposed to direct cold drafts that froze and damaged leaf tissue, reducing marketability at shipment.
Uneven airflow created overcooled areas and stagnant zones, increasing the risks of browning, softening and spoilage.
During thawing, cold-damaged tissue released liquid that could contaminate floors, produce odors and create slip hazards.
Laser-cut holes distributed the strong unit-cooler discharge across the duct, reducing direct impact on crops and creating an airflow pattern that avoided cold damage.
Duct static pressure and discharge distribution were optimized to deliver cool air not only above the stacks but also between the cabbage boxes.
Antibacterial permeable fabric suited to humid storage reduced mold and bacterial risks and prevented condensate from dripping onto crops.
Even crops directly below the unit cooler remained fresh without cold damage, substantially reducing discarded produce.
Reduced risks of browning, softening and spoilage created more reliable quality and marketability at shipment.
Less liquid from damaged cabbage reduced floor contamination, odors and slip risks, improving workplace safety and hygiene.
