ASHRAE Research Project 1480 Report - Food Service Technology ...

Single Island V-Bank Filter Velocities
Filter velocity measurements were taken on the single island v-bank hood at 3000 and 6000 cfm
(300 and 600 cfm/ft). Readings were recorded for each of the 12 filters with a 4-inch rotating
vane anemometer traversing flush to the filter face. The profiles are shown in Figure 6.
400
3000 cfm
350
Filter Velocity [fpm]
300
250
200
150
100
156
142
164
131
185
186
172
183
154
161
127
146
Rear
Front
50
0
1 2 3 4 5 6
6000 cfm
Filter Velocity [fpm]
400
350
300
250
200
150
100
302
282
311
292
353
350
342
346
305
310
271
276
Rear
Front
50
0
1 2 3 4 5 6
Figure 6. Filter Velocity Profiles for the 6-Foot Deep Single Island V-Bank Hood
The velocity trends were similar at both airflow rates. At 3000 cfm (300 cfm/ft), the overall
average filter velocity was 159 fpm, with 158 fpm for the average velocity for the front filters
and 160 fpm for the rear filers. The maximum velocity was 186 fpm and the minimum filter
velocity was 127 fpm. At 6000 cfm (600 cfm/ft), the overall average filter velocity was 312 fpm,
with 309 fpm for the average velocity for the front filters and 314 fpm for the rear filers. The
maximum velocity was 353 fpm and the minimum filter velocity was 271 fpm.
2-5
RP-1480