Fun knowledge about liquid nitrogen tanks: What you don’t know about liquid nitrogen refrigeration

The liquid nitrogen tank is not only a "low-temperature artifact" in laboratories and industrial fields, but also hides many interesting cold knowledge. Let's explore the wonderful world of liquid nitrogen and liquid nitrogen tanks together!

How low is the temperature of liquid nitrogen?
The temperature of liquid nitrogen is as low as  -196 ℃ , even lower than the lowest temperature in Antarctica! At such extremely low temperatures, many substances become "fragile", such as rubber shattering like glass and bananas easily producing a "ding ding dang" sound.

What is the "white mist" in liquid nitrogen tanks?
When liquid nitrogen is exposed to air, it rapidly evaporates and absorbs a large amount of heat, causing water vapor in the surrounding air to condense into small water droplets, forming the "white mist" we see. This is actually water vapor in the air, not liquid nitrogen itself!

Can liquid nitrogen tanks be suspended?
The ultra-low temperature characteristics of liquid nitrogen are applied in superconducting materials. After cooling the superconducting material in liquid nitrogen, it can produce the phenomenon of "magnetic levitation", which is as magical as the maglev train in science fiction movies!

How important is the "vacuum interlayer" of the liquid nitrogen tank?
The interlayer of the liquid nitrogen tank is evacuated, like putting a "thermal insulation jacket" on the tank. The vacuum environment almost isolates the transfer of heat, allowing liquid nitrogen to maintain a low temperature for a long time.

Can liquid nitrogen tanks still make delicious food?
Liquid nitrogen plays an important role in molecular cuisine. Chefs can use the extremely low temperature of liquid nitrogen to instantly freeze food ingredients and produce creative food with unique taste such as ice cream and mousse.

How long is the lifespan of a liquid nitrogen tank?
A high-quality liquid nitrogen tank, with proper use and maintenance, can serve for more than 10 years! Regularly checking the vacuum degree and sealing is the key to extending the life of liquid nitrogen tanks.

Does the sound of a liquid nitrogen tank speak?
Gently tap the outer wall of the liquid nitrogen tank. If the sound is clear, it indicates that the vacuum degree is good; If the sound is dull, it may indicate a decrease in vacuum level and requires inspection and maintenance.

Liquid nitrogen tanks are not only powerful assistants in scientific research, but also contain many interesting scientific principles and fascinating phenomena. If you are still curious about liquid nitrogen tanks, please feel free to contact us at any time to explore more mysteries of the low-temperature world!

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