What is the primary temperature control factor for open display cases?

The primary temperature control factor for open display cases is the temperature of the cold discharge air. In these types of displays, maintaining the appropriate temperature of the cold air that directly comes into contact with the products is vital for preserving product quality and safety. This cold air is essential for keeping perishable items, such as dairy or meats, at safe operating temperatures to prevent spoilage.

While interior product temperature, ambient store temperature, and air circulation rate are all relevant to the overall performance of refrigeration systems, they are secondary to the importance of the cold discharge air temperature. The effectiveness of the open display case relies significantly on the ability to deliver consistently chilled air to maintain the desired temperature around the displayed items, thus minimizing the risk of temperature fluctuations that could negatively affect the products stored within.