What Special Requirements are There for the Installation of Tea Cold Storage?

The storage environment of tea directly affects its color and taste. What special requirements does a cold storage for storing tea have?

Precautions for the installation of a tea cold storage:
Moisture content in the cold storage: Under normal circumstances, the moisture content of tea should be around 3% - 5%.

If it is too high, the tea will rot and deteriorate; if it is too low, it will affect the freshness of the tea.
Temperature of tea: Under normal circumstances, the temperature of tea should be around 0℃ - 5℃.

It cannot be too high or too low, otherwise it will affect the overall quality of the tea.

Specific requirements for the tea cold storage:
(1) The temperature control range of the green tea fresh - keeping cold storage is 0 - 8℃.
(2) The temperature control range of the oolong tea (Tieguanyin) fresh - keeping cold storage is around - 15℃.

During the storage process, various changes will occur to the internal substances of tea, resulting in a decline in the sensory qualities such as color, aroma and taste. The magnitude of these changes is directly affected by conditions such as the moisture content, temperature, oxygen and light of the tea. Therefore, the temperature and humidity of the cold storage should be designed in strict accordance with the requirements of tea storage.

The insulation board used in the tea cold storage should be polyurethane color - coated steel plate. For a tea cold storage with a temperature range of 0℃ - 5℃, the cold - storage board used should be about 10 centimeters thick. This can ensure the insulation effect while saving materials and reducing operating costs.