Do you want to install observation windows in the freezer door or not?

　　In the design and construction of cold storage, should observation windows be installed in cold storage doors? There is no standard answer to this question, and it needs to be combined with the actual use, operation characteristics and industry needs of the cold storage to make a reasonable choice. Whether the observation window is installed in the cold storage door or not will involve many factors such as energy consumption control, operation safety and operation efficiency.

　　The observation window is a window installed on the refrigerator door, like a transparent small door. The more direct observation window is to reduce unnecessary door opening operations. You can see the inside of the cold storage without opening the door of the cold storage. If there is no observation window in the traditional cold storage, the staff often need to open the door frequently in order to confirm the position of the internal goods, the working state or the use of space. Every time you open the door, a lot of cold energy will leak out, and at the same time, hot and humid air from outside will enter the warehouse, which will not only increase the load of the refrigeration system and increase the energy consumption cost, but also cause frost and dew in the warehouse, which will affect the stability of the storage environment.

　　For cold storage that frequently goes in and out, such as sorting cold storage in fresh food distribution center, observation window can improve working efficiency. Through the observation window, the staff can plan the entrance and exit routes in advance, confirm the location of goods, reduce the stay time at the entrance of the warehouse, and indirectly reduce the loss of cold energy. Some people think that there is no need to install observation window in the cold storage that frequently goes in and out, which depends on their own needs. In addition, in some scenes that need visual management, such as the low-temperature storage room of scientific research laboratories, the observation window allows managers to record the sample state without opening the door to meet the accuracy requirements of experimental data.