What type of container is typical for storing cryogenic liquids?

What type of container is typical for storing cryogenic liquids?

• A. Plastic squeeze bottle
• B. Glass bottle with cork
• C. Dewar flask with vacuum insulation
• D. Open metal can

Answer: (C)

Storing cryogenic liquids safely hinges on minimizing heat input to keep them at ultra-low temperatures. The best container for this purpose is a Dewar flask with vacuum insulation. The double walls create a space between the inner container and the outer shell, and this space is evacuated to remove air and slow heat transfer. That vacuum acts like a near-perfect barrier against heat entering by conduction and convection, and the inner surfaces can be designed to minimize radiant heat. This setup keeps the liquid cold longer and allows safe venting of boil-off gas that forms as some liquid inevitably warms. Other containers don’t provide this level of insulation or safety. A plastic squeeze bottle isn’t built to withstand cryogenic temperatures and would not hold the liquid safely. A glass bottle with a cork could crack or shatter from thermal stress and wouldn’t insulate effectively. An open metal can would transfer heat readily and cannot safely contain or vent the cryogenic liquid.

Storing cryogenic liquids safely hinges on minimizing heat input to keep them at ultra-low temperatures. The best container for this purpose is a Dewar flask with vacuum insulation. The double walls create a space between the inner container and the outer shell, and this space is evacuated to remove air and slow heat transfer. That vacuum acts like a near-perfect barrier against heat entering by conduction and convection, and the inner surfaces can be designed to minimize radiant heat. This setup keeps the liquid cold longer and allows safe venting of boil-off gas that forms as some liquid inevitably warms.

Other containers don’t provide this level of insulation or safety. A plastic squeeze bottle isn’t built to withstand cryogenic temperatures and would not hold the liquid safely. A glass bottle with a cork could crack or shatter from thermal stress and wouldn’t insulate effectively. An open metal can would transfer heat readily and cannot safely contain or vent the cryogenic liquid.