With the rapid development of China's economy, cold storage equipment has entered various fields such as supermarkets, trade, agriculture, and industry, closely related to our lives. A life without refrigeration equipment is unimaginable. Due to the rapid development of refrigeration, users often do not know how to choose from the numerous manufacturers and diverse varieties in the market, especially when there is a high demand and investment, which increases the difficulty of selection.

Cold storage is classified according to the type of storage structure:

① Civil cold storage:

This is currently one of the most commonly built cold storage facilities, which can be built as a single or multiple story structure. The main body of a building is generally a reinforced concrete frame structure or a brick concrete structure. The enclosure structure of a civil cold storage belongs to a heavy structure with high thermal inertia. The diurnal fluctuations of outdoor air temperature and the diurnal temperature fluctuations caused by solar radiation on the outer surface of the enclosure structure attenuate greatly in the enclosure structure. Therefore, the temperature fluctuations on the inner surface of the enclosure structure are relatively small, and the storage temperature is easy to stabilize.

② Combination plate cold storage:

This type of cold storage is in a single-layer form, with steel frame lightweight prefabricated insulation panel assembly structure for the storage panels, and its load-bearing components are mostly made of thin-walled steel. The inner and outer panels of the warehouse board are made of color steel plates, and the core material of the warehouse board is foamed rigid polyurethane or pasted polystyrene foam board. Due to the fact that all components, except for the ground, are prefabricated in a professional factory according to the same standard and assembled on site, the construction progress is fast and the construction period is short.

③ Covered soil cold storage:

It is also known as the earth kiln cave cold storage, and the cave structure is mostly arched, with single cave and continuous arch forms. Generally, it is made of brick and stone masonry, and covered with a certain thickness of loess as an insulation layer. As a low-temperature covered soil cold storage, the foundation of the tunnel should be located on a sand layer or bedrock that is not prone to frost heave. Due to its advantages of adapting to local conditions, using local materials, simple construction, low cost, and durability, it has achieved significant development in the northwest region of China.

④ Rock Cave Cold Storage:

Generally, it is built in rock layers with relatively hard stones and good overall integrity. The inner side of the tunnel is usually lined or sprayed with anchor treatment, and the thickness of the rock layer covering the tunnel is generally not less than 20m