A refrigerated case maintaining a temperature of 28°F is classified as which type of system?

A refrigerated case that maintains a temperature of 28°F is classified as a low temperature system. In refrigeration terminology, temperature classifications help in identifying the intended use and the performance characteristics of refrigeration equipment.

Low temperature systems typically operate in the range where food preservation is effective, often just below freezing. At 28°F, the system is designed to keep products such as frozen foods at a safe temperature while also preventing spoilage and maintaining quality.

This classification is important because it informs users about the expected performance of the refrigeration system, the types of products it can efficiently store, and the operational parameters for effective temperature control. Other classifications, such as high temperature, standard temperature, and ultra-low temperature, either refer to systems above the freezing point of water or to extremely cold systems, which are not applicable to a system maintaining 28°F.