Basic Documentation

Chapter 5–Laboratory Facility Exhaust Systems
Volumetric
Airflow
Internal Diameter
Corresponding To Velocity
cfm l/s 2400 fpm
(12.19 m/s)
3000 fpm
(15.24 m/s)
2,000 944 12.4” 314mm 11.1” 281mm
2,500 1,180 13.8” 351mm 12.4” 314mm
3,000 1,416 15.1” 385mm 13.5” 344mm
3,500 1,652 16.4” 415mm 14.6” 371mm
4,000 1,888 17.5” 444mm 15.6” 397mm
4,500 2,124 18.5” 471mm 16.6” 421mm
5,000 2,360 19.5” 496mm 17.5” 444mm
6,000 2,832 21.4” 544mm 19.1” 486mm
7,000 3,303 23.1” 587mm 20.7” 525mm
8,000 3,775 24.7” 627mm 22.1” 562mm
9,000 4,247 26.2” 665mm 23.5” 596mm
10,000 4,719 27.6” 701mm 24.7” 628mm
12,000 5,663 30.3” 770mm 27.1” 688mm
14,000 6,607 32.7” 831mm 29.2” 743mm
16,000 7,551 35.0” 889mm 31.3” 784mm
18,000 8,495 37.1” 942mm 33.2” 842mm
20,000 9,438 39.1” 993mm 35.0” 888mm
22,000 10,382 41.0” 1041mm 36.7” 931mm
24,000 11,326 42.8” 1087mm 38.3” 973mm
26,000 12,270 44.6” 1133mm 39.9” 1012mm
28,000 13,214 46.3” 1176mm 41.4” 1051mm
30,000 14,158 47.9” 1216mm 42.8” 1088mm
35,000 16,517 51.7” 1313mm 46.2” 1175mm
40,000 18,877 55.3” 1405mm 49.4” 1256mm
45,000 21,236 58.6” 1488mm 52.4” 1332mm
50,000 23,596 61.8” 1570mm 55.3” 1404mm
55,000 25,956 64.8” 1646mm 58.0” 1473mm
60,000 28,315 67.7” 1720mm 60.6” 1538mm
65,000 30,675 70.5” 1790mm 63.0” 1601mm
70,000 33,034 73.1” 1857mm 65.4” 1661mm
75,000 35,394 75.7” 1923mm 67.7” 1718mm
80,000 37,754 78.2” 1986mm 69.9” 1776mm
90,000 42,473 82.9” 2106mm 74.2” 1884mm
34 Siemens Building Technologies, Inc.