Table of Contents
Advertisement
Airflow
Systems are designed for typical hot aisle/cold aisle data center cooling environments
and installation:
On raised or nonraised floors.
l
In hot aisle/cold aisle arrangements.
l
The airflow provides less mixing of hot and cold air, which can result in a higher return
temperature to the computer room air conditioner (CRAC). This promotes better heat
transfer outside the building and achieves higher energy efficiency and lower Power
Usage Effectiveness (PUE). Additional efficiency can be achieved by sequestering the
exhaust air completely and connecting ducts directly to a CRAC unit or to the outside.
Best practice is to place a perforated floor tile in front of each bay to allow adequate
cooling air supply when installing on a raised floor. The following figure shows typical
airflow in a hot aisle/ cold aisle environment.
Figure 1 Typical airflow in a hot/cold aisle environment
1
5
9
Table 7 Airflow diagram key
#
Description
1
To refrigeration unit
2
Suspended ceiling
3
Air return
4
System bays
5
Cold aisle
2 2
3
4
4
6
7
8
#
Description
6
Hot aisle
7
Perforated rear doors
8
Pressurized floor
9
Perforated floor tile
Specifications
1
5
9
Airflow
27
Advertisement
Table of Contents
