Traditional Culture Encyclopedia - Photography major - What role does dry ice have?

What role does dry ice have?

Dry ice has the functions of ice making agent, smoke generation, cleaning and decontamination.

1. Refrigerant

Dry ice is widely used as refrigerant, especially in food preservation, transportation and storage. Because dry ice can quickly absorb a lot of heat and convert it into carbon dioxide gas, it produces a low temperature environment. This low temperature environment can effectively prolong the shelf life of food and maintain its original taste and quality. In the medical field, dry ice is also often used to cool equipment or treat some diseases that need low temperature.

2. Smoke effect

Dry ice has a special purpose in the field of photography and is often used to produce smoke effect. When dry ice comes into contact with water or air, it will quickly sublimate and absorb a lot of heat, thus producing white smoke. This smoke effect can be used to create dreamy, mysterious or romantic scenes, adding unique visual effects to photos or videos.

3. Cleaning and decontamination

Dry ice also has a good effect in cleaning and decontamination. Because the low temperature of dry ice can make it freeze quickly when it contacts the surface, it can peel off dirt or freeze the blockage, making it easier to remove. Dry ice can be used to remove blockages in pipes and sewers, and to remove dirt and oil stains on the surface. In the industrial field, dry ice is also often used to clean the residue on the production line or remove the scale in the pipeline.

Characteristics of dry ice:

1. Low temperature

The low temperature characteristic of dry ice is one of its most remarkable characteristics. The temperature of dry ice is very low, almost close to MINUS 1 degrees Celsius. This extremely low temperature makes dry ice widely used in refrigeration field. It can quickly absorb heat and convert it into carbon dioxide gas, thus creating a low-temperature environment. This low temperature environment can be used to cool objects or equipment, for example, in the fields of refrigeration, freezing and air conditioning.

2. Non-toxic and tasteless

Dry ice itself is non-toxic and tasteless and will not affect human health. At the same time, because it will not leave liquid after sublimation, it will not pollute food. This characteristic makes dry ice have a good effect in food preservation and transportation. Dry ice can be used to keep the freshness and taste of food and prolong its shelf life. In the medical field, dry ice is also often used to treat some diseases that require low temperature.

3. Volatile

Dry ice is very volatile, and the generated gas is 6~8 times larger than liquid carbon dioxide. This characteristic makes dry ice have a good effect in cleaning and decontamination. Dry ice can be used to remove blockages in pipes and sewers, and to remove dirt and oil stains on the surface. In the industrial field, dry ice is also often used to clean the residue on the production line or remove the scale in the pipeline.