Report No. 3098477-002a
July 31, 2006
Page 2 of 4
Airflow Rate in % of Test Airflow Rate 75%
100%
100
125% 0.400
90
0.350
Resistance, Pa
80 0.300
70 60
0.250
50
0.200
40
0.150
30 0.100
20
0.050
10
0.000
0
700
Resistance, in. Water
50%
1050
Airflow Rate, cfm
1400
1750
Graph 1: Resistance of Clean Device vs. Airflow
Air Velocity Airflow Rate in % of Test m/s Airflow Rate 1.25 50% 1.87 75% 2.50 100% 3.12 125% Table 1: Resistance of Clean Device vs. Airflow
fpm 246.0 369.0 492.0 615.0
Airflow Rate m3/s cfm 700 0.33 1050 0.50 1400 0.66 1750 0.83
Resistance Pa 19 38 61 94
in H2O 0.076 0.151 0.246 0.379