What is downflow and upflow type precision air conditioner ?
Precision air conditioners, often known as CCUs (close control units) or CRACs (computer room air conditioners), are refrigeration equipment built expressly to provide accurate temperature and humidity control in all applications requiring a high degree of precision. Precision air conditioners are utilized in data centers, where cooling loads can range from 5 to 20 kW, server rooms, data centers, mobile, and laboratory applications, as well as a variety of other industrial applications.
The classifications are based on the amount of chilly air discharged. The downward-flow unit exhausts cold air from the bottom and returns warm air from the top.
While the up-flow unit exhausts cold air from the top, the return unit exhausts warm air from the front bottom.
If the room’s ceiling height is less than six feet and there is no possibility of installing higher flooring, an up-flow unit is preferred.
Downflow units are recommended for datacenters because cold air escapes through the perforated tiles of raised floors, resulting in frigid aisles.
