Sunday, March 9, 2014

Refrigerator star rating

Each domestic refrigerator-freezer has what we call "Star rating". Star rating defines what is the storage temperature of the freezer compartment is. The lower the storage temperature temperature in freezer, the longest frozen food life is as the activity of micro-organisms is reduced. 

One star refrigerator-freezer has a storage temperature lower than or equal -6 C.

Two stars refrigerator-freezer has a storage temperature lower than or equal -12 C.


Three stars refrigerator-freezer has a storage temperature lower than or equal -18 C.


Four stars refrigerator-freezer has a storage temperature lower than or equal -18 C, but has a freezing capacity higher than 4.5 kg/100 L of the freezer's volume.


A question is: why freezers are rated using stars?!!!!

The answer simply is: it is inspired by the snow | ice flake shape under microscope which in most cases have the shape of the star.