How to implement the first cooling in the installation of low-temperature cold storage

How to implement the first cooling in the installation of low-temperature cold storage

Before the cold storage is put into production, the installation and debugging of the low-temperature cold storage system is a very important content. Only by the debugging of the cooling can the temperature in the cold storage be reduced to the temperature that you need, and the civil structure of the warehouse will be avoided due to sudden temperature drops. When there is damage, let’s understand what Kuhua Refrigeration did during the first cooling process.

First of all, we should make corresponding preparations. We should also vacuumize the refrigeration system. The temperature in the warehouse will gradually decrease through a slow method. Then we can evaluate the effect of cooling, why should we Slow cooling is actually due to a certain reason, so that the water contained in the construction project can be slowly drained to the outside, which can also prevent the civil engineering from being damaged due to the sudden drop in temperature or the freezing of water. Preventing the phenomenon of cold shrinkage caused by the rapid temperature drop, which results in the external wall structure of civil engineering being affected, is actually an important part of the installation process of low-temperature cold storage.

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 the 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. This is a detail that we must master when installing the low-temperature cold storage.

This is how Kuhua Refrigeration performs the first cooling when the low-temperature cold storage is installed. The first step is to use the pressure difference to charge nitrogen, the second step is to supply the evaporator appropriately, and the third step is It will go through a slow cooling operation, and the fourth step will be an extremely fast cooling operation. At this time, it is necessary to verify the cooling effect. The general cooling effect of the freezer room is relatively good. Within a limited time, we It can be found that both 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 the slow cooling, the walls of the warehouse are generally normal. The sex is relatively dry, and there will be no cracks or deformation.

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