Working Principle:
Vacuum cooling is a captivating process that operates by rapidly evaporating water from selected vegetables or products placed within a vacuum chamber, where the 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 boiling. In this carefully controlled environment, water begins to boil at temperatures much lower than usual, ensuring the cooling is both swift and efficient.
This extraordinary vacuum pre-cooling method draws the necessary heat directly out of the product itself, addressing both the product's inherent field heat and the heat created by respiration. This sophisticated operation results in roughly a 1% reduction in the product's initial water weight for every 10°C decrease in temperature. The true elegance of this cooling technique is its uniformity, as moisture is evenly extracted from every part of the produce, preventing any undesirable localized wilting.
Vacuum Cooler Features:
1. Maintain the vibrant freshness and vital nutrients of your produce, ensuring it delights both the eye and the palate.
2. Significantly extend the preservation period and dramatically enhance the shelf-life of produce, keeping it market-ready for longer.
3. Benefit from swift and uniform cooling, with each cycle completed in just 20 to 30 minutes, ensuring consistent quality in every batch.
4. Efficiently inhibit and eliminate bacteria and microorganisms, achieving a superior, pollution-free outcome for your produce.
5. Experience minimal evaporative water loss, between 2 to 3% of the total product weight, while effectively avoiding any concerns of localized wilting.
Vacuum Cooler Application Fields
This technology is perfectly tailored for leafy greens like lettuce and spinach. Ideal for field-packed items using perforated films, it adapts to denser vegetables such as cabbage, broccoli, and carrots, which may require slightly longer cooling but gain greatly in shelf-life enhancement.
For tender fruits like strawberries and mushrooms, it is crucial to commence cooling promptly after harvest. This practice ensures their immaculate condition and extends their usability, maintaining peak quality.
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