( a) temperature
How to better store 10,000 tons of fresh-keeping cold storage? The proper storage temperature is the key to the success of grape preservation. The freezing point of the grapes is easy due to the different sugar content. The higher the sugar content, the lower the freezing point, generally around -3 °C. Therefore, the temperature of the stored grapes is suitably -1 - 0 °C, and even after slight freezing, the grapes can still be fresh. After the grapes are put into storage, they should reach the appropriate temperature required for storage and preservation as soon as possible, while keeping the temperature constant. The temperature adjustment of the refrigerator is mainly performed by automatically or manually switching the refrigerator and controlling the switching time of the refrigerator.
(2) Humidity
In the grape fresh-keeping cold storage, it is necessary to maintain a certain humidity to achieve a better preservation effect. Maintaining high humidity (90% - 5%) can reduce the dry branches, grain loss and decay in storage, and improve the storage quality of the cold storage of grapes. Pay attention to regular defrosting to prevent low humidity. At the same time, the humidity can be adjusted by installing a spray device or an automatic humidity regulator or a ground-wetting sawdust.
(three) gas
Grapes release carbon dioxide and other gases such as ethylene and ethanol through respiration in the cold storage. When ethylene accumulates to a certain extent in the warehouse, it will promote maturity and decline. If the concentration of carbon dioxide is too high, it will cause respiratory disorders and quality decay, so ventilation and ventilation are necessary. When ventilating and ventilating, you should choose the morning or nighttime with low temperature to avoid ventilation when the outside humidity is too high, such as rainy days and foggy days, so as not to cause excessive temperature and humidity changes in the warehouse.
Beijing Blue Dream Refrigeration: Fresh-keeping cold storage installation
Medical cold storage: medical cold storage installation
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