Chapter 6

Humidity Control

During hypobaric storage a “metabolic humidification system” evaporates sufficient cellular water to transfer respiratory heat, fermentative heat, and any environmental heat plant matter may acquire. In LP warehouses and laboratory systems, the metabolic humidifier is supplemented with a mechanical humidification system that utilizes electric heat to evaporate sufficient ancillary water to saturate the incoming air changes. The advantage gained with a mechanical humidifier is that a full commodity load, partial load, even a single fruit can be stored, certain that the humidity will always be saturated to minimize commodity water loss. A chilled-mirror dew-point sensor was tested for humidity control in a Grumman/Dormavac ...

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