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 process requires energy in the form of heat to convert water from its liquid state to vapor, akin to boiling. Within this controlled environment, water transitions to a boil at temperatures far below the norm, ensuring optimal cooling.
The extraordinary process of vacuum pre-cooling draws essential heat directly from the product itself, enveloping both the intrinsic field heat and that generated by respiration. This sophisticated operation results in about a 1% reduction in the product's initial weight in water for every 10°C drop in temperature. The brilliance of this method lies in its consistency, as moisture is uniformly extracted from all parts of the produce, effectively preventing any undesirable localized wilting.
Vacuum Cooler Features:
1. Preserve the vibrant freshness and essential nutrition of your produce, keeping it as nature intended.
2. Extend the preservation duration and significantly boost the shelf-life of your valuable produce.
3. Experience rapid, uniform cooling with each cycle taking just 20 to 30 minutes, ensuring your produce is ready in no time.
4. Effectively inhibit and eliminate bacteria and microorganisms, guaranteeing a pollution-free outcome for your produce.
5. The evaporative water loss is minimal, ranging from 2 to 3% of the total product weight, ensuring the integrity of your produce without localized wilting.
Vacuum Cooler Application Fields
Perfectly suited for leafy greens such as lettuce and spinach, offering unparalleled freshness. This method is also ideal for field-packed produce using perforated films. Although denser vegetables like cabbage, broccoli, and carrots may require slightly longer cooling times, the remarkable improvement in shelf life makes it a worthy investment.
For delicate fruits like strawberries and mushrooms, initiating cooling shortly post-harvest is crucial to maintain their pristine condition and extend usability, ensuring they remain as delightful as the moment they were picked.
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