Working Principle:
Vacuum cooling operates on an ingenious principle where water evaporates rapidly from select vegetables or products within a vacuum chamber. This chamber boasts an impressively low atmospheric pressure, setting the stage for a captivating transformation. The energy required for this process stems from heat, which facilitates the conversion of water from its liquid state into vapor, much like the process of boiling. Within this meticulously controlled environment, water begins to boil at remarkably reduced temperatures, ensuring that cooling is both efficient and optimal.
This extraordinary process of vacuum pre-cooling draws the essential heat directly from the products themselves, addressing both the inherent field heat and that produced through natural respiration. Consequently, for every 10°C drop in temperature, approximately 1% of the product's initial weight in water is sacrificed. The elegance of this method lies in its uniformity, as moisture is extracted consistently from every part of the produce, thereby preventing any unfortunate localized wilting and ensuring a uniformly fresh outcome.
Vacuum Cooler Features:
1. Safeguard the vibrant freshness and critical nutrition of your produce, keeping it as nature intended.
2. Dramatically extend preservation duration, thereby significantly enhancing shelf-life and freshness.
3. Encounter swift and consistent cooling, with each cycle efficiently completing within a mere 20 to 30 minutes, ensuring rapid throughput.
4. Proficiently inhibit and eradicate bacteria and microorganisms, guaranteeing a pure, pollution-free result.
5. Evaporative water loss is impressively minimal, ranging between just 2 to 3% of the total product weight, effectively eliminating concerns of localized wilting.
Vacuum Cooler Application Fields
Perfectly attuned for leafy greens such as lettuce and spinach, this method excels not only in handling field-packed produce with perforated films but also caters to denser vegetables like cabbage, broccoli, and carrots, which may require marginally longer cooling times. Nevertheless, the substantial enhancement in shelf life justifies the slight wait.
For the most delicate fruits like strawberries and mushrooms, it is paramount to initiate cooling promptly post-harvest. This ensures their pristine condition is preserved, maintaining their exquisite freshness and extending their usability for an extended period.
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