The refrigerator is cold and hot?Many people understand it wrong!Is your ingredients paid?

Have you ever noticed that the degree of cooling will be different after the food is placed in different areas of the same refrigerator refrigerator? There is a corresponding statement called the refrigerator "down cold and upper heat", which does reflect some objective laws. So why does this kind of cold and cold appear in the refrigerator?

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The interior of the refrigerator is full of air. The air has a very important nature, that is, its density will be affected by temperature: the temperature rises, the quality remains unchanged, and the density will become smaller. Instead, if the temperature is reduced, the density will become larger.

If the cold air and the warm air are mixed together, the warm air will rise (because it is lighter), and the cold air will decrease (because it is heavier). The temperature of the refrigerator refrigerator is between 3-5 degrees Celsius. Cold air often accumulates at the bottom, so if the room space is large, the temperature at the bottom will indeed be lower.

However, it should be noted that this temperature difference is not much, especially for the cold refrigerator, the temperature uniformity will be better. We basically don't need to pay attention to the upper and lower sequences of food placement.

The temperature in the refrigerator is also likely to be caused by other factors, and their influence effect is much significant than the upper and lower layers.

For example, the temperature near the air outlet will be lower, and many low -end style refrigerators will even freeze near the air outlet of the refrigerator. Therefore, if there are foods such as fresh fruits and vegetables, you do not want to freeze food, you should stay away from the outlet of the refrigerator.

As close to the external space, the temperature on the door of the refrigerator is near 5-7 degrees Celsius. And every time the door is opened or closed, the air outside will enter, so the temperature near the refrigerator door will rise significantly. Foods that should be eaten in a short period of time, such as milk, eggs and condiments.

The temperature of the low temperature refrigerator is between 0-1 degree Celsius and is higher than the freezing room, but it is the lowest of all refrigerated rooms. It can be used to store foods that are easily lost or they don't want to freeze in the freezer. For example, meat, fish, tofu, etc.

The temperature between vegetable refrigeration is 6-8 degrees Celsius and is used to store foods that are difficult to store at room temperature. Vegetables, fruits and seasonings are suitable for storage. However, leaf vegetables and other dry foods should be sealed in plastic bags to keep fresh.

After understanding the characteristics of the temperature distribution in the refrigerator, you can use it more effectively to keep the food fresh. Go home to see your refrigerator and recruit these little wonderful.

Source: Science Popularization China, CCTV News Client

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