Compared with ordinary cold storage for fruits and vegetables, controlled atmosphere (CA) storage features longer storage periods. During long-term preservation, fruits and vegetables continuously lose water, which leads to weight loss, wilting and loss of crisp texture.
To restrain water evaporation of produce and reduce the water vapor partial pressure difference between goods and storage environment, CA storage rooms need stable and proper relative humidity. Proper humidity helps cut weight loss and retain fresh crispness. Generally, the relative humidity inside CA storage is kept between 90% and 95%.
There are five widely used humidification methods in the industry: floor water filling humidification, water injection for air cooler chassis, spray humidification, centrifugal atomization humidification and ultrasonic atomization humidification. Ultrasonic atomization humidification, namely ultrasonic humidifier, delivers fine and even mist. It can steadily maintain high humidity inside storage, match long-term preservation requirements, and becomes a preferred humidification device for CA storage projects. A reliable humidification system is essential to preserve the commercial value of stored fruits and vegetables.
FAQ
Q: Why does CA storage need a dedicated humidification system?
A: Fruits and vegetables have a longer storage cycle in CA rooms with high water evaporation. The humidification system balances indoor humidity, reduces produce weight loss and keeps fresh crispness.
Q: What is the ideal humidity level for CA storage?
A: The recommended relative humidity in CA storage is 90%~95%.
Q: What are the 5 humidification methods for CA storage?
A: They are floor water filling humidification, water injection for air cooler chassis, spray humidification, centrifugal atomization humidification and ultrasonic atomization humidification.
Q: What are the advantages of ultrasonic atomization humidification over other methods?
A: It produces fine mist with uniform humidification and reliable humidity control, suitable for long-term stable high-humidity preservation in CA storage.
