Comparative Efficiency of HVAC / HEPA MEDIA

1.

공조용 AIR FILTER 시험 방법
Comparative Efficiency of HVAC / HEPA MEDIA
Percent Efficiency Arrestance ( ASHRAE STANDARD 52-76 ARRESTANCE ; Weight methods )
60
70
80
90
GROUP 1
92
97
98
99
Percent Efficiency Atomospheric Dust SPOT( ASHRAE STANDARD 52.2-1999 ATMOSPHERIC )
20
30
40
50
60
70
Percent Efficiency 0.3
GROUP 2
10
80
90
95
98
µm D.O.P( MIL – STANDARD 282 )
20
30
40
50
60
80
GROUP 3
GROUP 4
GROUP 1
Panel Filter
; Foam, PE highloft, Metal
Screen, other synthetics or
low efficiency
2001.07.18
GROUP 2
Pleated Filter
; Type of fine synthetic
nonwoven+cotton/Pe
blends, some wet laid
composites
GROUP 3
GROUP 4
Extended surface(pocket)
; Type filter microglass
blanket, synthetic
microfiber and electret
nonwoven media, wet laid
cellulose, microglass paper
Extended area pleated box;
Type HEPA 99.95, ULPA
99.999% efficiency Wet laid
ultrafine microglass paper,
special electrets synthetic
media( Japan )
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2.

공조용 AIR FILTER 시험 방법
≥
Application Guidelines
Std.52.2
Minimum
Efficiency
Reporting
Value(MERV)
Approx.Std.52.1
Results
Duct Spot
Efficency
Arrest
ance
20
N/A
N/A
19
N/A
N/A
17
N/A
N/A
16
N/A
N/A
15
>95%
N/A
14
90~95%
>98%
13
80~85%
>98%
2001.07.18
Application Guidelines
Typical Controlled Contaminant
Typical Applications and
Limitations
Typical Air Filter/Cleaner Type
0.3 µm ≤ Partical Size,
virus(unattached)
Carbon dust
Sea salt
All combustion
Radon progeny
Clean Rooms
Radioactive materials
Pharmaceutical
manufacturing
Carcinogenic materials
Orthopedic surgery
HEPA/ULPA Filters
≥99.999% efficiency on 0.1~0.2 µm
Particles, IEST Type F
≥99.999% efficiency on 0.3 µm Particles,
IEST Type D ≥99.99% efficiency on 0.3
µm Particles, IEST Type C
≥99.97% efficiency on 0.3 µm Particles,
IEST Type A
0.3 ~1.0µm Particle Size
All bacteria
Most tobacco smoke
Droplet nuclei(sneeze)
Cooking oil
Most Smoke
Insecticide dust
Most face power
Most paint pigments
Hospital inpatient care
General surgery
Smoking loungs
Superior commercial
buildings
Bag Filters
Nonsupported(flexble)
Microfine fiberglass or synthetic media
300~900mm deep, 6~12 pocket
Box Filters
Rigid style cartridge filters 150 ~300mm
deep may use lofted( air laid) or
paper(wet laid) media
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3.

공조용 AIR FILTER 시험 방법
≥
Application Guidelines
Std.52.2
Minimum
Efficiency
Reporting
Value(MERV)
Approx.Std.52.1 Results
Duct Spot
Efficency
Arrestan
ce
12
70~75%
>95%
11
60~65%
>95%
10
50~55%
>95%
9
40~45%
>90%
8
30~35%
>90%
7
20~25%
>90%
6
<20%
85~90%
5
<20%
80~85%
2001.07.18
Application Guidelines
Typical Controlled Contaminant
Typical Applications and
Limitations
Typical Air Filter/Cleaner Type
1.0~3.0 µm Partical Size,
Superior residential
Better commercial
buildings
Hospital Laboratories
Bag Filters ; Nonsupported(flexble)
Microfine fiberglass or synthetic media
300~900mm deep, 6~12 pocket
Box Filters ; Rigid style cartridge filters
150 ~300mm deep may use lofted( air
laid) or paper(wet laid) media
Commercial buildings
Better residential
Industrial workplaces
Paint booth inlet air
Pleated Filters ; Disposable, extended
surface, 25~125mm thick with cottonpolyester blend media, cardboard frame
Cartridge Filters ; Gradd density
viscous coated cube or pocket filters,
synthetic media
Throwaway ; Disposable synthetic
media panel filters
Legionella
Humidifier dust
Lead dust
Milled flour
Coal dust
Auto emissions
Nebulizer
Welding fumes
3 ~10µm Particle Size
Mold
Spores
Hair spray
Fabric protector
Dusting aids
Cement dust
Pudding mix
Snuf, Powered milk
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4.

공조용 AIR FILTER 시험 방법
≥
Application Guidelines
Std.52.2
Minimum
Efficiency
Reporting
Value(MERV)
Approx.Std.52.1 Results
Duct Spot
Efficency
Arrestan
ce
4
<20%
75~80%
3
<20%
70~75%
2
<20%
65~70%
1
<20%
<65%
Application Guidelines
Typical Controlled Contaminant
Typical Applications and
Limitations
Typical Air Filter/Cleaner Type
>10 µm Partical Size,
Minmum Filtration
Residential
Window air conditioners
Throwaway ; Disposable synthetic
media panel filters
Washable ; Alumium mesh, Latex
cpated animal hair, or foam rubber
panel filters
Electrostatic ; Self charging (passive)
woven polycarbonate panel filter
Pollen
Spanish moss
Dust mites
Sanding dust
Spray paint dust
Textile fibers
Carpet fibers
참고 ; UL900 난연 시험방법
규격
시험방법
합격기준
UL 900
불꽃으로 필터면을 3분간 태워 Smoke Density
측정
상기의 방법으로 Flame Extension 측정
상기 방법으로 Spark 측정
Class 1 ; 2.5 in2 이하
Class 2 ; 9 in2 이하
2001.07.18
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5.

공조용 AIR FILTER 시험 방법
≥
FILTER 모양
Bag Type
2001.07.18
Cell Type
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Hot Melt Type

6.

공조용 AIR FILTER 시험 방법
HVAC 및 HEPA 시험 방법
TEST 종류
시험 먼지
효율
ASHRAE52.1-1992법
ASHRAE52.2-1999법
Arizona Desert Dust (silica)
: 72%
Powder Carbon : 23%
Cotton Linter : 5%
평균 7.7µm입자(비중 2.7)
Cotton Linter ; 4mm Mesh통과
입자
효율 ; KCL입자
η = 1 –( w2 /w1) x 100(%
η: 중량법 효율(%
w2 : 절대 필터가 포집한 분
진의 중량
w1 : 공급되는 분진의 중량(g)
* 비색법 효율 %
η: Particle 효율(%)
η=(1-C2/C1)x100(%)
PSE = { 1 – 아래쪽 농도/위쪽 농도 } η : 계수법 효율(%)
x 100
C1 : 유입측의 *0.3μm 이하
의 먼지 개수
C2 : 유출측의 *0.3μm 이하
의 먼지 개수
Loading Dust ; 52.1-1992와 동일
* PSE ; Particle size removal
efficiency
* KCL ; Potassium Chloride
유사 시험 방법 ; ASHRAE 52.1,2 = Eurovent 4/5 = BS 6540 = DIN 24 184(24 185) = EN 779
계수법 HEPA : BS 3928 = Eurovent 4/5 = DIN 24 184
계수법 ULPA : DIN 24 183
2001.07.18
DOP,NACL법외
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DOP ;0.3µm입자
NACL ; 0.26µm입자
Parafin Oil
DEHS ; 0.2~3µm범위
,0.4 µm 기준
*DOP ; dioctyphalate
*DEHS
; DiEthylHexylSebacate

7.

공조용 AIR FILTER 시험 방법
AIR FILTER의 시험 DUST
Dusts
AC Coarse 1
Material
Quartz mineral
AC Coarse 2
Range µm
Particle Size
10~14% wt, 9~15% wt
11~18% wt, 20~26% wt
27~33% wt, 6~12% wt
0~5,
5~10
10~20, 20~40
40~80, 80~200,
37~41% wt, 15~21% wt
13~19% wt, 15~21% wt
6~12% wt
0~5,
5~10
10~20, 20~40
40~80
23% wt
72% wt
(* ISO 12103-1 ; prEN 779-2000 방법)
5% wt
0~ 80
* ISO 12103-1
( 각 size별 Volume % )
ASHRAE 52/76
--- 52.1 ,52.2
( Air Cleaner Test
Dusts ;
AC Coarse )
Carbon Black
SAE J 726 fine
BS2831 No.3
Fused alumina
8~32
BS2831 No.2
Fused alumina
0~10
Cotton Linters
기타 Aerosols ; Methylene blue( BS2831 No 1, 0.6 µm 고상 ), Sodium Chloride( BS3928, 0.6 µm 고상 )
Uranine( France, Sodium salt of fluroescein , 012 µm 고상 )
2001.07.18
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8.

공조용 AIR FILTER 시험 방법
Eurovent & CEN classifications of ventilation Air Filters
Type
Eurovent class
Efficiency( % )
Measured by
Coarse dust
filter
( Pre
Filter )
EU 1
G1
< 65
EU 2
G2
65< 80
EU 3
G3
80< 90
EU 4
G4
> 90
EU 5
F5
40 < 60
EU 6
F6
60 < 80
EU 7
F7
80 < 90
EU 8
F8
> 90
EU 10
H 10
85
EU 11
H 11
95
EU 12
H 12
99.5
EU 13
H 13
99.95
EU 14
H 14
99.995
EU 15
U 15
99.9995
EU 16
U 16
99.99995
EU 17
U 17
99.999995
Fine dust
filter
( Medium)
High
Efficiency
Particulate
Air Filter
( HEPA )
Ultra Low
Penetration
Air Filter
2001.07.18
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Standards
ASHRAE 52-76
Eurovent 4/5
Measured by
Synthetic dust weight
Arrestance
BS 6540
DIN 24 185
EN 779
Atomspheric Dust
Spot Efficiency
BS 3928
Eurovent 4/5
DIN 24 184
( DIN 24 183 )
Sodium Chloride
Or
Liquid Aerosol
DIN 24 184
( DIN 24 183 )
Liquid Aerosol

9.

공조용 AIR FILTER 시험 방법
Classification of air Filters accroding to CEN EN 779 ; 2000
CEN EN 779 Class
( prEN 779 ; 2000 )
Final Pressure Drop
Pa
Average Arrestance ( Am ) of
synthetic dust
%
Average Efficiency ( Em ) of
G1
250
50 ≤Am < 65
-
G2
250
65 ≤Am < 80
-
G3
250
80 ≤Am < 90
-
G4
250
90 ≤Am
-
F5
450
-
40 ≤Em< 60
F6
450
-
60 ≤Em< 80
F7
450
-
80 ≤Em< 90
F8
450
-
90 ≤Em< 95
F9
450
-
95 ≤Em
1. Average Arrestance ( Am ) of synthetic dust% ; Load Test dust is the ASHRAE 52.1
* 72% Test dust ‘’ fine ‘’ ISO 12103-1( Arizona road dust )
23% Carbon Dust
5% Cotton Fibers
2. Average Efficiency ( Em ) of 0.4 µm Particles , % ; HEPA AND ULPA
* DEHS ; DiEthylHexylSebacate 0.2~3 µm 범위중에서 0.4 µm로 측정
2001.07.18
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0.4 µm
Particles , %

10.

공조용 AIR FILTER 시험 방법
Minium Efficiency Reporting Value(MERV) Parameters
Standard
52.2
( MERV)
Composite Average Particle Size Efficiency, %
in Size Range, µm
Range 1 ( 0.30~1.0)
Range 2 ( 1.0 ~ 3.0 )
Range 3( 3.0 ~ 10.0 )
1
N/A
N/A
E3 < 20
2
N/A
N/A
3
N/A
4
Average Arrestance, %
By Standard 52.1
Method
Minium Final Resistance
Pa
In.of water
Aavg < 65
75
0.3
E3 < 20
65 ≤Aavg < 70
75
0.3
N/A
E3 < 20
70 ≤Aavg < 75
75
0.3
N/A
N/A
E3 < 20
75 ≤Aavg
75
0.3
5
N/A
N/A
20 ≤ E3 < 35
N/A
150
0.6
6
N/A
N/A
35 ≤ E3 < 50
N/A
150
0.6
7
N/A
N/A
50 ≤ E3 < 70
N/A
150
0.6
8
N/A
N/A
70 ≤ E3
N/A
150
0.6
9
N/A
E1 < 50
85 ≤ E3
N/A
250
1.0
10
N/A
50 ≤ E1 < 65
85 ≤ E3
N/A
250
1.0
11
N/A
65 ≤ E1 < 80
85 ≤ E3
N/A
250
1.0
12
N/A
80 ≤ E2
90 ≤ E3
N/A
250
1.0
13
E1 < 75
90 ≤ E2
90 ≤ E3
N/A
350
1.4
14
75 ≤ E1 < 85
90 ≤ E2
90 ≤ E3
N/A
350
1.4
15
85 ≤ E1 < 95
90 ≤ E2
90 ≤ E3
N/A
350
1.4
16
95 ≤ E1
95 ≤ E2
95 ≤ E3
N/A
350
1.4
2001.07.18
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11.

공조용 AIR FILTER 시험 방법
International Test Standards for Air Permeablity
Test Standard
Country
Test Area
Test Pressure
Unit of pressure
DIN 53 887
Germany
20 cm2
200 Pa
l/m2/s or l/dm2/min
AFNOR G 07-111
France
20 cm2 or 50 cm2
196 Pa
l/m2/s
BS 5636
England
5 cm2
98 Pa
cm3/cm2/s
ASTM D 737
USA
38 cm2
125 Pa
cfm
JIS L 1096-A
Japan
38 cm2
125 Pa
cm3/cm2/s
EDANA 140.1
Nonwovens
20 cm2 or 50 cm2
196 Pa
l/m2/s
TAPPI T 251
Paper
20 cm2 or 38 cm2
125 Pa
Cfm or cm3/cm2/s
2001.07.18
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12.

공조용 AIR FILTER 시험 방법
Air Flow Rate vs Resistance, Pa( 유량 vs 압력손실 )
2001.07.18
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13.

공조용 AIR FILTER 시험 방법
Dust Loading에 따른 각 Particle Size별 포집 효율
2001.07.18
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