Question

A common refrigerant used in large-scale food refrigeration systems (such as cold storage facilities) is:

• A. Chlorine gas
• B. Ammonia (NH$_3$)
• C. Oxygen
• D. Carbon dioxide snow

Hint:

Ammonia is particularly valued for its high latent heat of vaporization, making it an ideal refrigerant for large-scale refrigeration systems.

Answer 1

The Correct Option is B

Ammonia (NH$_3$) is a commonly used refrigerant in large-scale refrigeration systems, especially in industrial and cold storage facilities. It is highly efficient, cost-effective, and has a low environmental impact when handled correctly.
- Option (1) "Chlorine gas" is incorrect. Chlorine gas is toxic and is not used as a refrigerant in such systems due to its hazardous nature.
- Option (3) "Oxygen" is incorrect. Oxygen is not typically used in refrigeration systems as it does not have the cooling properties required for efficient refrigeration.
- Option (4) "Carbon dioxide snow" is incorrect. While carbon dioxide is used in some specialized refrigeration methods (like dry ice), it is not the main refrigerant in large-scale cold storage.
Thus, the correct answer is Ammonia (NH$_3$) (Option 2).