How to make the cooling effect of outdoor refrigerator last longer?

To make the outdoor refrigerator keep the cold for a longer time, we need to start from many aspects, including the material of the refrigerator itself, pre-cooling method, ice cube usage skills, storage location and control of switching frequency. Mastering these methods can keep the refrigerator at a low temperature for a longer time when used outdoors, keeping food and drinks fresh.

It is very important to choose a refrigerator with efficient insulation. The insulation effect of the refrigerator mainly depends on the material and structure. The common refrigerators on the market mainly use high-density polyurethane foam (PU) or EPP materials. These materials have good thermal insulation properties and can effectively block external heat from entering and prevent internal cold air from losing. Thick-walled refrigerators usually have better insulation than thin-walled ones, so you should pay attention to the thickness of their insulation layer when purchasing. If it is used outdoors for a long time, you can also consider a style with additional sealing strips to reduce the loss of cold air and improve the cold preservation ability.

Before using the refrigerator, pre-cooling in advance can effectively increase the cold preservation time. Before loading food and drinks, you can put the cooler in a cool place for a few hours, or put ice cubes or ice bags in advance to cool it down, so that the temperature inside the box drops to a lower level. At the same time, the food and drinks stored in the cooler should also be frozen or refrigerated in advance to reduce the temperature fluctuation inside the cooler. If it is a short trip, you can refrigerate the drinks and food in the refrigerator at home to the lowest temperature before putting them in the cooler, which can greatly extend the time that the food can keep low temperature.

The use of ice cubes is also an important factor affecting the cold preservation time. Generally, large ice cubes melt slower than crushed ice, so it is recommended to use large ice cubes or frozen bottles instead of directly putting crushed ice. In addition, the placement of ice cubes is also critical. It is recommended to place ice cubes on the top of the cooler, because cold air has the characteristics of sinking, so that the cold air of the ice cubes can cover the entire cooler more evenly. For long-term travel, you can also use dry ice, which has a better cooling effect and will not melt into water to wet the food.

When using a cooler outdoors, try to reduce the number of switches to reduce the loss of cold air. Every time you open the refrigerator, hot air will enter, causing the internal temperature to rise rapidly. When loading food, you can first sort it according to the frequency of use, placing items that need to be accessed frequently on the upper layer and storing less frequently used food at the bottom, which can reduce the loss of cold air when searching for food. To further improve the cold-keeping effect, you can choose a refrigerator with a sealed lock, which can better reduce the exchange of cold and heat and ensure that the temperature inside the box is maintained at a low level.