Pre-cooling in the long-distance transportation of food cold room in advance or frozen for a cooling method, the request is to be fast to the required food storage temperature. It is protecting protective transportation of the food quality and extend the storage life of the major Measures. Pre-cooling and pre-cooling is usually Conducted in the refrigerator. Pre-cooling methods Commonly used natural air cooling, ventilation, cooling, vacuum cooling and cold water cooling. After centrifugal ventilator treatment, the food shoulds be aussitôt Placed in cold room environments.
Refrigeration shoulds to pay attention to centrifugal fan some problems.
Precooling.Can be refrigerated cold room Where food, medicine and equipment --other Stored at low temperature in order to Avoid deterioration. Cooling Optional: water-cooled or air-cooled. Compressor Optional: Open-kind semi-closed gold compressor Quantity: One or more. Implementation of a very energy regulation: can a Machine library or stand-alone single library. Ability Protection: high and low voltage protection with fluoride, hydraulic differential protection, phase, overload protection. High degree of automation: the implementation of library can automatically adjust temperature, cooling water, adjust, man-machine dialogue can be Implemented using the PLC functions on.
Refrigerator frozen food. Frozen foods, or frozen food, frozen food, frozen food, frozen after-Refers to processing of food. Frozen food is a very common method of food preservation, in addition cold room to Significantly Reduce food spoilage and chemical reaction rate, the better Because the water freezes food, but aussi a serious impediment to microbial breeding, qui can Significantly extend the foods best before dated.
Many countries will-have a wide refrigerator, cold room Strategically save a lot of food for national emergency Purposes. Some agencies will seed Stored in minus 18 degrees Celsius in the seed bank to plant species extinction in response to the situation. Saved seed crops, or more Often uncommon species.
Changes in the temperature range and allows storage period. Cold room temperature is not possible, at a constant temperature, the result of cooler performance, storage capacity factoring Such As size and temperature différence entre inside and outside the library temperature will fluctuate Within a definite range. In general, the food is low storage temperature, and the ranks as small as possible. It is a good food preservation, to prevent prevention loss and low temperature physical disease.ã €,
Temperature control. Different foods-have different optimum cold room temperature. After cold room temperature and storage temperature of food is affected by Many factoring, Such As storage temperature and the library When the food temperature difference, refrigerator performance and storage capacity, database of air traffic, stack method, food variety and maturity and so on. Stacking storage shoulds be reasonable, based on the actual temperature regulating tank conditions the library before the need with gradually heating method, to Avoid wide temperature différence entre inside and outside, resulting and in condensation drops of food surfaces.
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