Working Principle:
Vacuum cooling operates on a captivating principle that leverages the rapid evaporation of water from selected vegetables or other products within a meticulously engineered vacuum chamber, where atmospheric pressure is dramatically reduced. This intriguing process necessitates energy in the form of heat to transform water from its liquid form into vapor, akin to boiling. In this finely-tuned environment, water boils at significantly lower temperatures, ensuring superior cooling efficiency.
This extraordinary vacuum pre-cooling process ingeniously extracts the necessary heat directly from the product itself, addressing both the inherent field heat and that generated by natural respiration. This operation leads to an approximate 1% reduction in the product's initial weight due to water loss for every 10°C reduction in temperature. The elegance of this method is its uniformity, as moisture is consistently extracted from all parts of the produce, preventing any unwanted localized wilting and guaranteeing even cooling.
Vacuum Cooler Features:
1. Preserve the vibrant freshness and vital nutrition of your produce with ease.
2. Extend storage life impressively and significantly enhance the shelf-life of your produce.
3. Benefit from swift and consistent cooling, with each cycle completing in a mere 20 to 30 minutes.
4. Effectively suppress and eradicate bacteria and microorganisms, ensuring a pristine and pollution-free outcome.
5. Minimal evaporative water loss is achieved, amounting to only 2 to 3% of the total product weight, eliminating concerns of any localized wilting.
Vacuum Cooler Application Fields
Perfectly tailored for leafy greens like lettuce and spinach, this method is equally adept for field-packed produce using perforated films. Although denser vegetables such as cabbage, broccoli, and carrots might require a slightly extended cooling time, the remarkable enhancement in shelf life makes the wait worthwhile.
For delicate fruits like strawberries and mushrooms, it is crucial to initiate cooling promptly after harvest to preserve their immaculate condition and extend their usability period significantly.
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