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Data Center Products

The Original DirectAire®

Key Performance Characteristics

  • Directional air flow achieves a 93% total air capture
  • Pressure equalizing diffusion blades
  • Cools over 25kW per rack
  • 68% open area delivers 2,600CFM @ .1” H2O
  • Reduces capital expenditures on cooling infrastructure by 40%
  • Over 40% annual fan energy savings
  • 2,500 lbs design load boosted to 3,000 lbs with HD stringer

Total Air Capture & Data Center Airflow

DirectAire®
2600 CFM Delivered @ .1" H2O
2420 CFM Captured
93% TAC


The DirectAire® smoke test above shows directional airflow path and air capture rate per zone at the face of a standard 24" x 76" server rack.

Total Air Capture (TAC) rate refers to the amount of air delivered through the panel that is then captured by the server rack placed in front of that panel.

The black box represents a standard 24" x 76" server rack. Lines have been added to show the three zones of the server rack. Zone 1 represents the bottom of the rack closest to the floor and Zone 3 represents the top of the rack farthest from the air supply.

Note that the DirectAire® airflow panel delivers 93% of its 2,600 CFM at .1" H2O to the face of the server. Furthermore, you will notice this airflow is spread evenly across the three zones of the rack. You can see in this image that even and directed airflow distribution is achieved using the DirectAire® panel.

Eliminate the Burden of Airflow Containment

Containment systems in a data center come with many challenges including fire code requirements, service distribution restraints and limited flexibility. Unlike other panels which throw air straight up in a vertical plume, the DirectAire's angular throw evenly distributes the majority of the air it delivers directly to the face of the rack providing effective containment when used in conjunction with best practices.

DirectAire's 93% TAC rate enables you to gain near peak airflow without containment. Typical airflow panels require containment systems to ensure maximum airflow to the racks.

High Density Cooling Capacity

DirectAire's ability to deliver high volumes of air directly and evenly across the face of the server rack gives it the unique ability to handle very high density equipment. The table below lists cooling capacities per rack based on a mathematical calculation for systems without containment. Laboratory testing was conducted using load banks to measure the cooling effectiveness and verify the calculated kW/ rack heat loads.

DirectAire®
CFM & Cooling Capacity
Pressure
(in. H2O)
CFM
DirectAire
kW/Rack (93% TAC)
.02
1151
8.5
.04
1626
12.0
.05
1844
13.6
.06
2007
14.8
.08
2318
17.1
.10
2594
19.1
.12
2823
20.8
.14
3027
22.3
.16
3217
23.7
.18
3378
24.9
.20
3433
25.3

*Cooling capacities were calculated using the following formula:(CFM x Total Air Capture %) / 126(CFM needed to cool 1kW @ 25ºF )= kW per rack.

Performance

DirectAire®
System Performance Criteria*

   
Static Loads
Rolling Loads
 
U/S
System
Weight
(lbs/ft2
)
Design
Loads
(lbs)
Safety
Factors
10
Passes
(lbs)
10,000
Passes
(lbs)
Impact
Loads
(lbs)
CFM
(.10" H2O)
Total
Air Capture
Bolted Stringer
13.0
2500
Min>2
2000
2000
200
2600
93%

*System load tests are conducted following CISCA's Recommended Test Procedures with the exception of Design Load. Design Load is a CISCA Concentrated Load Test performed on actual understructure using yield pint and safety factors in place of deflection.

 
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