Case Studies: Case 5 Effect of Turning Vanes in CRAC Units Turning vanes or scoops are usually attached at the bottom of the CRAC units to direct the flow of air to the front side of the unit and to make the air flow horizontal. Thus, the CRAC units with scoops preferentially feed tiles in the front of the unit. This effect is illustrated in this example. The CRAC unit on the left (with a dark line on the back edge) has a scoop.   The following figure shows the airflow distribution through the perforated tiles. Note that the flow coming out of the CRAC unit without the scoop impinges on the bottom surface and divides into two streams of approximately equal strength, to feed the two rows of tiles on the two sides. However, the CRAC unit with the scoop almost exclusively feeds the tiles in front of it. This results in significantly higher flow rates for the tiles in the left row compared to those for the tiles in the middle and the right rows. Next Case Study Previous Case Study [Home] [COMPACT] [MacroFlow Electronic] [MacroFlow General] [TileFlow] [News] [Contact Us] [Jobs] [Services]