In the current booming development of the cold chain industry, the construction quality of cold store, as a key facility for storing various perishable goods, is crucial. Polyurethane cold storage board, as the core material for cold storage construction, have a profound impact on the performance, energy consumption, and service life of cold storage by selecting products of appropriate specifications.
From the perspective of thickness specifications, the common polyurethane cold storage board thicknesses are 50mm, 75mm, 100mm, 150mm, etc. For some small cold stores with low storage temperature requirements, such as those only used for short-term storage of fruits, vegetables and other agricultural products, a 50mm thick cold storage board may meet basic needs. Its relatively thin thickness reduces costs to a certain extent, and can also provide a certain insulation effect. However, if it is used to store goods such as meat and seafood that require lower temperatures and extremely high temperature stability, a 100mm or even 150mm thick cold storage board is more suitable. Thicker boards can form a more effective insulation barrier, reduce heat transfer, and reduce the workload of the cold storage refrigeration system, thereby achieving better energy-saving effects, and saving a lot of electricity expenses in the long run.
Let’s talk about the fire protection grade specifications. There are many goods in the cold storage. Once a fire occurs, the consequences will be disastrous. Therefore, the fire protection performance of polyurethane cold storage boards cannot be ignored. According to national standards, polyurethane cold storage boards are divided into B1 flame retardant, B2 combustible and B3 flammable. In crowded places or cold store storing flammable goods, B1 flame retardant cold storage boards must be selected. When encountering a fire source, this type of board can effectively delay the spread of fire and buy precious time for personnel evacuation and fire rescue. Even in some cold storages where ordinary goods are stored, it is recommended to give priority to B1 products to improve the overall safety of the cold storage. In contrast, although B2 and B3 cold storage boards may be cheaper, they have greater fire hazards and should be selected with caution in actual applications.
In addition to thickness and fire protection grade, the density specifications of cold storage boards are also very critical. Generally speaking, the density of polyurethane cold storage board is between 35-45kg/m³. Cold storage boards with higher density tend to have better compressive strength and thermal insulation properties. When the cold storage needs to withstand greater pressure, such as when it is used to store goods on multi-layer shelves, choosing a cold storage board with a higher density can ensure that the board will not deform due to long-term pressure and ensure the structural stability of the cold store. For some small cold stores with limited space and low load-bearing requirements, appropriately reducing the density and choosing a cold storage board of about 35kg/m³ can not only meet basic insulation needs but also reduce costs.
When choosing polyurethane cold storage boards of appropriate specifications to build a cold storage, it is necessary to comprehensively consider factors such as the purpose of the cold store, the type of goods stored, temperature requirements, fire safety, and cost budget. Only in this way can we create an efficient, energy-saving, safe, economical and practical cold storage, providing a solid guarantee for the healthy development of the cold chain industry. With the continuous advancement of technology, the specifications and performance of polyurethane cold storage boards are also being continuously optimized. In the future, we are expected to see more high-quality and diversified products to meet the needs of cold store construction in different scenarios.
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