Is it better to install aluminum pipes or steel pipes in the fresh cold storage?

Preservationcold storageinstallIs it better to use aluminum pipes or steel pipes for cold storage equipment? Let's first take a look at the advantages and disadvantages of aluminum tube and seamless steel tube:

1. First, keep it freshCold storage installationThe cost of using aluminum tube is higher than that of steel tube, but aluminum tube itself can be made into automatic frost, which steel tube cannot achieve.

2. Aluminum tubes have higher heat transfer efficiency than steel tubes because of their excellent thermal conductivity; The difference in evaporation temperature between the refrigerant inside the aluminum tube and the temperature inside the preservation cold storage is small. As the evaporation temperature increases, the energy efficiency ratio of the compressor also increases, reducing energy consumption and achieving significant energy-saving effects.

3. When aluminum pipes are of the same length as steel pipes, the inner and outer surface area of aluminum pipes is twice that of steel pipes. However, the inner volume of aluminum pipes is only one fourth of that of steel pipes, and the amount of refrigerant used is only one-third of that of steel pipes. This significantly saves the operating cost of the refrigeration system.

4. Installation is the same asWhen using equipment of the same size for preservation cold storage, steel pipes also need to be equipped with wall pipes, while aluminum pipes only need to be equipped with top pipes to meet the design requirements of preservation cold storage. Moreover, the top pipes use convective heat transfer to improve heat transfer efficiency.

5Aluminum exhaust pipeThe installation is also very convenient, and the weight is much lighter, which can save a lot of installation time.

6. Aluminum pipes can be directly completed in the factory building, ensuring quality and performance. However, the production of steel pipes is relatively complicated, and quality cannot be clearly guaranteed.

7The aluminum exhaust pipe has high smoothness, is easy to clean, can prolong the service life of the compressor, and is resistant to compression and has good strength; Steel pipes are more prone to rusting, resulting in system blockage.

8. The heat transfer coefficient of aluminum exhaust pipes is K ≈ 9-14w/m2 · ℃ at an evaporation temperature of -40 ℃~0 ℃, while that of steel exhaust pipes is K ≈ 8-13w/m2 · ℃ at an evaporation temperature of -40 ℃~0 ℃. Therefore, for the same cold storage equipment (under the same load), the evaporation area of aluminum exhaust pipes is smaller than that of steel exhaust pipes.

Although the unit area price of aluminum pipes is higher than that of steel pipes, the functions of aluminum pipes are much higher than that of steel pipes, reducing energy consumption and saving 30% energy. In the long run, the overall price of aluminum pipes is better than that of steel pipes, so preservation is necessaryCold storage installation ">Cold storage installationChoosing aluminum strips is an ideal solution, and the market prospects for aluminum strips are promising.