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Ask About This Solution โThe Challenge
A Guangdong agricultural cooperative processing 1,200 kg of leafy greens per cycle struggled with long cooling times. Romaine lettuce, spinach, and Chinese cabbage went from field at 28โ32ยฐC into cold storage, requiring 8โ10 hours to reach core temperature. Shelf life was limited to 5โ7 days.
The Solution
CVF-1500A-4P vacuum pre-cooler installed directly on the packhouse floor.
Results
| Parameter | Before | With Vacuum Pre-Cooling |
|---|---|---|
| Field to cold storage | 8โ10 hours | 35 minutes |
| Core temp at loading | 28โ32ยฐC | 4โ6ยฐC |
| Cold storage energy | 100% baseline | 65% reduction |
| Shelf life | 5โ7 days | 12โ15 days |
| Weight loss | โ | 1.8โ2.5% |
Key Insight
For leafy greens, vacuum cooling is the fastest method available. The critical factor is packaging โ perforated cartons or mesh bags allow vapor escape. Solid plastic bins trap moisture and reduce cooling efficiency.
Yuanxian Food Machinery โ July 2026
This page is part of our wider refrigeration work. Two related companies may be useful: Kunning Cryo makes low-temperature freezing and quick-freeze equipment, while Yuanxian Machinery handles our vacuum cooling projects in Chinese.
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