Grease Filter Efficiency Test Method - Food Service Technology ...

interval is not met for the cooking hamburger case, the overall collection efficiencies are in
good agreement.
OPC
Channel,
µm
TABLE 4.5. BAFFLE PARTICLE COLLECTION EFFICIENCY AS
A FUNCTION OF PARTICLE SIZE
Cooking Oleic Acid - Griddle Off Oleic Acid - Griddle On
Collection
Efficiency,
%
95%
Confidence
Interval
ASHRAE
52.2
Criteria
Collection
Efficiency,
%
95%
Confidence
Interval
ASHRAE
52.2
Criteria
Collection
Efficiency,
%
95%
Confidence
Interval
ASHRAE
52.2
Criteria
0.32-0.42 -1.9 0.10 < 0.07 1.2 0.01 < 0.07 1.4 0.01 < 0.07
0.42-0.56 -2.3 0.13 < 0.07 1.4 0.01 < 0.07 1.6 0.01 < 0.07
0.56-0.75 -4.3 0.09 < 0.07 1.8 0.02 < 0.07 1.9 0.01 < 0.07
0.75-1.0 -4.9 0.13 < 0.07 1.7 0.03 < 0.07 1.4 0.02 < 0.07
1.0-1.3 -4.7 0.13 < 0.07 1.3 0.02 < 0.07 1.6 0.01 < 0.07
1.3-1.8 -4.7 0.14 < 0.07 1.7 0.02 < 0.07 1.7 0.01 < 0.07
1.8-2.4 -3.9 0.16 < 0.07 1.4 0.05 < 0.07 1.9 0.01 < 0.07
2.4-3.2 -0.4 0.17 < 0.07 1.7 0.04 < 0.07 2.2 0.02 < 0.07
3.2-4.2 0.6 0.18 < 0.15 1.3 0.06 < 0.15 0.0 0.02 < 0.15
4.2-5.6 2.0 0.18 < 0.15 3.2 0.04 < 0.15 3.1 0.01 < 0.15
5.6-7.5 7.2 0.17 < 0.19 7.1 0.04 < 0.19 10.5 0.03 < 0.18
7.5-10.0 16.8 0.19 < 0.17 14.7 0.05 < 0.17 18.9 0.07 < 0.16
100
Collection Efficiency, %
90
80
70
60
50
40
30
20
Cooking Hamburger
Oleic Acid, Griddle Off
Oleic Acid, Griddle On
Flow Rate = 1,000 CFM
3- 16" x 20" Filters
∆P across Filters = 0.10" H2O
10
0
-10
0.1 1 10
Particle Diameter, µm
Figure 4.7. Baffle Particle Collection Efficiency for Cooking Hamburger,
Oleic Acid with Griddle Off, and Oleic Acid with Griddle On
21