What to do when the cold storage is cooled for the first time

What to do when the cold storage is cooled for the first time

Before the cold storage is put into production, the installation and debugging of the low-temperature cold storage is a very important content. Only by debugging the temperature can the temperature in the cold storage be reduced to the temperature you need, so as to avoid the sudden temperature drop of the civil construction of the warehouse. However, if there is damage, let's take a look at okmarts.com to understand how the cold storage refrigeration is done during the first cooling process.

First of all, we should make corresponding preparations, and also do a good job of vacuuming the refrigeration system, which will cause the temperature in the warehouse to gradually decrease through a slow method.

Next, we can evaluate the effect of cooling. There are certain reasons why the temperature should be cooled slowly, so that the water contained in the construction project can be slowly discharged to the outside, which can also avoid the sudden temperature of the civil construction project. Decrease, or damage caused by the freezing of moisture, can also prevent the phenomenon of cold shrinkage caused by the rapid temperature drop, which will affect the outer wall structure of civil engineering. This is actually an important part of the installation process of low-temperature cold storage. content.

The cooling operation before the installation of the low-temperature cold storage, even we should have the corresponding understanding, for example, before charging the refrigerant, we must do a good job of vacuuming, so that we can check whether the system is tight, and it can also promote the cold storage. The air and moisture inside are discharged, and the nitrogen filling test should be done before heat preservation. This is also a better way to deal with it. In fact, the building materials selected for each cold storage are also different, so we need to meet the cooling requirements The speed is also different, which is a detail we must master when installing the low-temperature cold storage.

　　The operation of cooling for the first time when the low-temperature cold storage is installed is as follows:

　　In the first step, the pressure difference is used to charge nitrogen,

　　 In the second step, the evaporator will be properly supplied with liquid.

　　 The third step will be a slow cooling operation,

　　 The fourth step will be a rapid cooling operation. At this time, it is necessary to verify the effect of cooling.

The general cooling effect of the freezing room is relatively good. Within a limited time, we can find that the evaporation temperature and the temperature of the warehouse can quickly drop to the normal range, and the cooling speed can also meet the requirements. The natural temperature rise in the warehouse is also normal. At the same time, after slow cooling, the walls of the warehouse are generally dry, and there will be no cracks or deformation.

　　 When the low-temperature cold storage is installed, if the first cooling test can be carried out, then the civil structure can also be guaranteed to prevent the civil structure from being damaged due to the sudden drop in temperature.