The following tables provide the required airflow rate and airflow
speed to the T2 Telco accelerator card under various
operating conditions.
Table 1.
T2 Normal Flow (Exhaust Air
from I/O Bracket) at Sea Level
Inlet Temperature versus
Airflow Requirement out of I/O Bracket for PCIe Card Slot (56.51 mm x 20.33 mm) at Sea Level for 50
W Total Card Power |
Inlet Temperature to the
Card |
I/O Bracket
(70°C) |
CFM |
LFM |
Static Pressure |
25 |
1.7 |
140 |
0.10 |
30 |
2.0 |
160 |
0.11 |
35 |
2.3 |
190 |
0.14 |
40 |
2.8 |
230 |
0.17 |
45 |
3.7 |
300 |
0.24 |
50 |
5.1 |
410 |
0.37 |
55 |
7.8 |
630 |
0.68 |
Table 2.
T2 Normal Flow
(Exhaust Air from I/O Bracket) at 1800 m above Sea Level
Inlet Temperature versus
Airflow Requirement out of I/O Bracket forPCIe Card Slot (56.51 mm x 20.33 mm) at 1800 m above Sea
Level for 50 W Total Card Power |
Inlet Temperature to the Card |
CFM |
LFM |
Static Pressure |
25 |
1.9 |
150 |
0.10 |
30 |
2.2 |
180 |
0.13 |
35 |
2.6 |
210 |
0.16 |
40 |
3.2 |
260 |
0.20 |
45 |
4.2 |
340 |
0.29 |
50 |
5.8 |
470 |
0.45 |
55 |
8.8 |
710 |
0.82 |
Table 3.
T2 Reverse Flow (Inlet Air
from I/O Bracket) at Sea Level
Inlet Temperature versus
Airflow Requirement into I/O Bracket for PCIe Card Slot (66.87 mm x 13.18 mm) at Sea Level for 50
W Total Card Power |
Inlet Temperature to the
Card |
I/O Bracket
(70°C) |
CFM |
LFM |
Static Pressure |
25 |
0.9 |
100 |
0.08 |
30 |
1.1 |
120 |
0.09 |
35 |
1.3 |
140 |
0.11 |
40 |
1.5 |
160 |
0.13 |
45 |
1.9 |
200 |
0.17 |
50 |
2.3 |
240 |
0.22 |
55 |
2.9 |
310 |
0.3 |
Table 4.
T2 Reverse Flow
(Inlet Air from I/O Bracket) at 1800 m above Sea Level
Inlet Temperature versus
Airflow Requirement into I/O Bracket forPCIe Card Slot (66.87 mm x 13.18 mm) at 1800 m above Sea
Level for 50 W Total Card Power |
Inlet Temperature to the Card |
CFM |
LFM |
Static Pressure |
25 |
1.0 |
110 |
0.09 |
30 |
1.2 |
130 |
0.10 |
35 |
1.4 |
150 |
0.12 |
40 |
1.7 |
180 |
0.15 |
45 |
2.1 |
220 |
0.19 |
50 |
2.6 |
270 |
0.25 |
55 |
3.3 |
350 |
0.35 |