Working Principle:
Vacuum cooling operates on the fascinating principle of rapid water evaporation from specific vegetables or products in a vacuum chamber, where atmospheric pressure is exceedingly low. This innovative process demands energy in the form of heat to transform water from its liquid state to vapor, much like the act of boiling. Within this meticulously controlled environment, water begins to boil at temperatures far below the usual threshold, ensuring optimal cooling.
This remarkable process of vacuum pre-cooling draws the necessary heat directly from the product itself, addressing both the inherent field heat and that generated by respiration. The operation results in an approximate 1% loss of the product's initial weight in water for every 10°C decrease in temperature. The elegance of this method lies in its uniformity, as moisture is extracted evenly from all parts of the produce, effectively preventing any unwanted localized wilting.
Vacuum Cooler Features:
1. Preserve the vibrant freshness and essential nutrition of your produce by maintaining its peak quality.
2. Extend the preservation duration and significantly boost shelf-life, ensuring your produce remains market-ready for longer.
3. Experience rapid, uniform cooling with each cycle taking a swift 20 to 30 minutes, ensuring maximum efficiency.
4. Effectively inhibit and eliminate bacteria and microorganisms, guaranteeing a pollution-free, safe outcome.
5. The evaporative water loss is minimal, ranging from 2 to 3% of the total product weight, with no worries about localized wilting.
Vacuum Cooler Application Fields
Perfectly suited for leafy greens such as lettuce and spinach, this method is also ideal for field-packed produce using perforated films. While denser vegetables like cabbage, broccoli, and carrots may require slightly longer cooling times, the substantial improvement in shelf life makes the wait extremely rewarding.
For delicate fruits like strawberries and mushrooms, it is crucial to initiate cooling shortly after harvest to maintain their pristine condition and extend usability.
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