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Views: 99 Author: Site Editor Publish Time: 2022-08-29 Origin: Site
2. Adding cold aisles to the baseline model (including the aisle tailgate and the translucent roof of each cold aisle)
Measurement points: Measure illuminance at the same measurement points as the baseline configuration (the "center of the cold aisle" measurement point is located inside the closed cold aisle.)
Sealed cold aisle models for black and white cabinets. The team created a second configuration by adding a sealed cold aisle to the baseline model, including the aisle tailgate and a translucent roof for each cold aisle.
Illuminance measurements for each measurement point in the sealed cold aisle scenario
As shown in the figure, it shows that the white cabinets and containers have more illumination than the black cabinets and containers at all measured locations.
The figure also shows that the illuminance in the center of the cold aisle is 44% to 48% lower than the baseline scene in the presence of either black or white cabinets and seals due to the presence of the sealing layer. However, in the cold aisle, the illumination of the white cabinet and sealing layer is 48% higher than the illumination of the black cabinet and sealing layer.
That is, it is easier for staff to observe and detect the cold aisle when using white cabinets and sealing layers.
3. Modify the baseline configuration model to add vertical exhaust ducts on all cabinets (ved)
Measurement points: measure illumination at the same measurement points as the baseline configuration. Sealed cold aisle for black and white cabinets. Next, the team modified the baseline configuration model by adding vertical exhaust ducts (ved) on all cabinets.
Illuminance measured at each measurement point in the VED scenario
Since the VEDs extend from the top of the cabinets to the ceiling, they effectively prevent the luminaires on the same aisle from providing any illumination to adjacent aisles. As can be seen in the figure, the white cabinet and VEDs have a significant impact on the illumination of the hot aisle. The center illumination of the hot aisle is 75% higher than the white baseline configuration and 182% higher than the black cabinet and VED configuration. However, at all measurement locations except the hot aisle, the VEDs had a negligible effect on illuminance.
Overall, from a lighting perspective, using a white cabinet instead of a black cabinet can -
1. Energy-efficient lighting. White cabinets reflect more light than black cabinets, so that fewer lighting devices can be selected for illumination.
2, Improve visibility. When choosing a white cabinet, the most obvious advantage comes from better visibility inside the cabinet itself, where technicians can read labels with the doors closed, thus easily identifying the server to be found.
3. Easy to clean. The color of the cabinet does not affect the amount of dust and dirt collected, but it does affect the amount of dust and dirt that can be seen. A white cabinet makes dust and dirt more visible (and encourages more frequent cleaning), while a black cabinet hides dirt (allowing dust to build up over time)
