Air Fillter - Ly Thuyet Loc Cho Cleanroom

7/25/2019 Air Fillter - Ly Thuyet Loc Cho Cleanroom

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clean air solutions

Presentation

for

EAC, Vietnam

Lars Kristensen


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1. Air1. Air

Clean air is important We eat 1 kg food per day

We drink 2 kg fluid per day

But we breathe 24 kg air per day !!


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Air

Oxygen

(21%!itrogen

("#%

Argon(1%

Gases

- water vapour

- CO2, H, Ne, He, O3 et

Particles

- volcanic ash

- sea salt

- dusts

- sand

- pollen


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How Clean i! "#e Air $How Clean i! "#e Air $

Particles in t$e AirParticles in t$e Air

Particles in t$e AirParticles in t$e Air

Particleslitre&o'acco smoe 1)) *illions

+ig$ ay 1 *illion

City 1)) -illions

Country roa. 1) -illions/ural area 1 -illion

Ocean 1)) &$ousan.s

Arctic 1) &$ousan.s

Clean room 1


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%artile !i&e in at'o!p#eri air%artile !i&e in at'o!p#eri air

00

AmountAmount AreaArea

eig$teig$t

Particle sie 3mParticle sie 3m

11

1)1)

4)4)

4444

4040

44,4444,44

%L

esst$anPa

rticle5iame

ter

%L

esst$anPa

rticle5iame

ter

),1),1 11 1)1)

44,4% less t$an 1 3m 644,4% less t$an 1 3m 644,4% less t$an 1 3m 644,4% less t$an 1 3m 6

")%")%

),1% 7 1 3m),1% 7 1 3m


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Particle size distribution of

atmospheric dust

Particles smaller than 1 mrefer to(

999 of numbers"# of weight


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How large i! 1 )'$

1 m8 11))) mm

+air9 1$# m

Pollen9 1# m


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How large i! 1 )'$

Pollen9 1# m

:n.ustrial .ust9 );0 m*acteria9 );


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Oil smoeOil smoe

&o'acco smoe&o'acco smoe

-etallurgical .ust-etallurgical .ust *acteria*acteria

VirusVirus

$at in. of particles are smaller$at in. of particles are smaller

t$an 1 micrometer =t$an 1 micrometer =


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%ro*le'! wit# air onta'ination%ro*le'! wit# air onta'ination

Healt# pro*le'!

Allergi reation!

lung di!ea!e!

aner+n!tallation pro*le'!

low effiieny for #eat e#anger!, fan!, et.

onta'ination of produt! 'iro #ip, drug!...

redued air flow


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/u''ary - Air/u''ary - Air

%tmospheric air consists of gases and dust

&ust is ' ##1 ( 1## )m

999 of the number of particles in outdoor air aresmaller than 1 )m

"# of the weight is from particles smaller than 1 )m


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3. 0+" N4+N+N43. 0+" N4+N+N4

0ilter perfor'ane - need!0ilter perfor'ane - need!

good efficiencygood efficiency

low pressure droplow pressure drop

long lifetimelong lifetime


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%artile 0iltration ffet!%artile 0iltration ffet!

1. 5iffu!ion

2. +ntereption

3. +nertia6. /training

7. letro!tati


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1. 5iffu!ion effet

Velocity

Particles smallerthan 1 m dont

follow the air flow.

They are

influenced by the

vibrations of theair molecules.

Fibre diameter Fibre density


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2. +ntereption effet>mall, lig$t particles

follo t$e air floaroun. a filter fi're; :f

t$e centre of t$e

particle follos a flo

pat$ $ic$ comes

closer to t$e fi're t$an

t$e ra.ius of t$eparticle, t$e particle is

intercepte.;

Velocity Fibre diameter Fibre density


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3. +nertia effet

Larer particles aretoo heavy to follow

the air flow around

a filter fibre.


The lare particle

will impine

directly onto thefilter fibre.


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6. /training effet

Particles with adiameter reater

than the

clearance

between two

fibres cant pass


* i f filt ith hi h


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*ecipe for a filter with high

efficiency and long life time

/'all fi*re dia'eter

A lot of fi*re!

arge filter area


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"#i! knowledge #a! 'ade

to use more fibres for all our

bagfilters than what is standard

within the industry


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"otal 'e#anial olleting effiieny

#)#)

?)?)

@)@)

2)2)

))),1),1 11 1)1)

Particles sie 3mParticles sie 3m

%%

5iffusion effect5iffusion effect

:nterception effect:nterception effect

>training effect>training effect

1))1))

:nertia effect :nertia effect


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7. letro !tati effet

Larger effect onLarger effect on

small particlessmall particles

B



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Dlass fi'er >ynt$etic fi'er

(many, small fi'ers (fe, 'ig fi'ers


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+ig$ initial efficiency can 'e ac$iee. it$

electrostatically c$arge. fi'ers

+oeer, fi'ers ill Fuicly 'e .isc$arge. $en

expose. to out.oor air;

As long as 'ig sie synt$etic fi'ers are use., t$ey

ill not $ae same long term efficiency as a glass

fi'er;

+ong term test in rural en,ironment


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+ong term test in rural en,ironment

for glass fiber and synthetic media

)

1)

2)


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%re!!ure drop%re!!ure drop

Pressure drop measured in Pa- mm .Pressure drop measured in Pa- mm .22/- inch/- inch

0G and depends on'0G and depends on'

%ir flow%ir flow edia density- thickness- porosity3edia density- thickness- porosity3

ilter construction pocket shape- inlet etc3ilter construction pocket shape- inlet etc3


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0ilter 'edia - pre!!ure drop0ilter 'edia - pre!!ure drop

+ow pressure drop by'+ow pressure drop by'#ig# poro!ity#ig# poro!ity

low 'edia veloity airflowlow 'edia veloity airflow

Lo porosityLo porosity +ig$ porosity+ig$ porosity


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0ilter 'edia - pre!!ure drop0ilter 'edia - pre!!ure drop

"o get a"o get a good effiienygood effiienyandand relative low pre!!urerelative lowpre!!ure

dropdrop- fine fi*er!- fine fi*er!

#ig#er effiieny give! #ig#er d%#ig#er effiieny give! #ig#er d%opti'i&ing 'edia i! i'portant den!ity, fi*eropti'i&ing 'edia i! i'portant den!ity, fi*er

dia'eterdia'eter

0ilter onfiguration pre!!ure drop0ilter onfiguration pre!!ure drop


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0ilter onfiguration - pre!!ure drop0ilter onfiguration - pre!!ure drop

Gilter me.iaGilter me.ia

'loce.,'loce.,

$ig$ .P 8$ig$ .P 8

s$ort lifetimes$ort lifetime

Conical s$ape

Parallel pocets


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"e#nial lifeti'e"e#nial lifeti'e

5ependent on(5ependent on(

initial pre!!ure lo!!initial pre!!ure lo!!

'edia lofty 'edia give! *etter du!t'edia lofty 'edia give! *etter du!tau'ulationau'ulation

effetive filter !urfaeeffetive filter !urfae


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8edia - life ti'e8edia - life ti'e

+ofty material+ofty materialclogs up slower than a compact 5clogs up slower than a compact 5longer life timelonger life time

+arge fibers gi,es strength and loft+arge fibers gi,es strength and loft

+ig$ Loft, ex +:BGLO+ig$ Loft, ex +:BGLO


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0ilter !urfae - ife ti'e


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ife ti'e

For bafilters!

"#$ more media area ives1))% loner life time


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/u''ary - filter t#eory/u''ary - filter t#eory

/everal filtration effet! work! toget#er in a filter/everal filtration effet! work! toget#er in a filterffiieny i! lowe!t at 8%%/ dependent onffiieny i! lowe!t at 8%%/ dependent on

'edia, veloity et.'edia, veloity et.

"o apture !'all partile! - fine fi*er!"o apture !'all partile! - fine fi*er!

"#e lifeti'e i! dependent on 'edia, effetive"#e lifeti'e i! dependent on 'edia, effetive

filter area, airflow and environ'entfilter area, airflow and environ'ent

"#e on!trution i! i'portant"#e on!trution i! i'portantto a#ieve low d%to a#ieve low d%


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6. 0+" "9%/6. 0+" "9%/

Pre filters panel and bag3Pre filters panel and bag3

ine filters bag filters 6ine filters bag filters 6

pleated3pleated3

.7P%8+P% filter.7P%8+P% filter

%dsorption filters carbon3%dsorption filters carbon3

Hi 0l fi* l * filHi 0l fi* l * fil


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Hi - 0lo fi*er gla!! *ag filter!Hi - 0lo fi*er gla!! *ag filter!

B Lo cost

B Extremely

goo. me.ia

B VB>$ape

B 5istanceri''on

A/HA filt l t dA/HA filt l t d


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A:/OPACA:/OPAC


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Hi-Tech flters - HEPA & ULPAHi-Tech flters - HEPA & ULPA

%&'&L(% ) %(*&L(%%&'&L(% ) %(*&L(%with laminatorwith laminator

%&'&L(+ ) %(*&L(+%&'&L(+ ) %(*&L(+

(,L/T0 1'(,L/T0 1'

F&L(&+F&L(&+

(,L/T0(,L/T0

T+(T+(

5iff t t


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5ifferent !eparator!

Aluminum +ot melt

!e


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Ad!orption filter!Ad!orption filter!


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W#y Ad!orption filter! $$W#y Ad!orption filter! $$

*emo,al of gasses substances*emo,al of gasses substances


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W#at i! ativated ar*on $W#at i! ativated ar*on $

aterial with large surface area 1 ### m:8g3aterial with large surface area 1 ### m:8g3

/btained by pyrolysis of materials such as'/btained by pyrolysis of materials such as'

;oconut shell;oconut shell

;oal;oal

PeatPeat

0ood0ood


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Ativated ar*onAtivated ar*on

Pores in material gi,es the large surface'Pores in material gi,es the large surface'

-icropore

-acropore -esopore


43/101

Ad!orption 'e#ani!'Ad!orption 'e#ani!'

Ad!orptionAd!orption

ever!i*le *inding *etween a 'oleuleever!i*le *inding *etween a 'oleule

and t#e !urfae.and t#e !urfae.


44/101

Ad!orption 'e#ani!'Ad!orption 'e#ani!'

#e'i!orption#e'i!orption

+rrever!i*le #e'ial *inding *etween a+rrever!i*le #e'ial *inding *etween a

'oleule and i'pregnation.'oleule and i'pregnation.

A fA f


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Area of u!eArea of u!e

Ativated ar*on ad!orptionAtivated ar*on ad!orption/olvent!/olvent!

Odor!Odor!

Ativated and i'pregnated ar*onAtivated and i'pregnated ar*on #e'i!orption#e'i!orption

Aid, orro!ive ga!e! /OAid, orro!ive ga!e! /O22, NO, NO,,, H, H22//

A''oniu' NHA''oniu' NH33

0or'alde#yde0or'alde#yde

Nulear filterNulear filter

7 0ilter eono'y


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7. 0ilter eono'y

The runnin costs depend on!

1; Life time

2; Energy costs


47/101

0ilter eono'y - ife ti'e


48/101

0ilter eono'y - ife ti'e

For bafilters!

"#$ more media area ives1))% loner life time

/perating economy 5 low pressure drop


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/perating economy low pressure drop

E : energy input ;kW#

: fan and fan 'otor effiieny

1>>>=

tdPqE

7


50/101

7


51/101

7nergy cost comparison

2i-flo 3(-4"5 6 poc7ets

16# Pa ) 36## m3)h

2i-flo 3%-4"5 1 poc7ets

1## Pa )36## m3)h

Example


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Example

8 9 1 m

3

)s :91# ;F%

>>B.>

ABC>C>1

=

=

Filter class - cleaningt


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costs

@ormally #.#"mduct surface perm3)h supply air flow

&nstallations with F=" filter :0/":A>+/AE 02;1B1442

B CE! E! ""4Particle efficiency9

B EJ/OVE!& @4

"e!t rig urovent 6


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5E+>5E+>

p Gilterp Gilter

particle counterparticle counter

*esults7*/=7@? 489


64/101

7*/=7@? 489

0rational partile effiieny

- effiieny E! !i&e

- effiieny E! du!t load

5u!t weig#t arre!tane

0inal pre!!ure drop 67> %a for la!!ifiation

EUROVENT 4/9 based on 0.4 m particle size

Report No. Test Organiation Location o! La"oratory Test #$per%isor &ates o! Test

''() *amfl A+ TRO#A HH ,('/

A. EV!"E Name 0o1el No. 0an$!act$rer 0ar2eting Organiation

TE#TE H3-FLO 0-45 *amfl A+ -Type 0e1ia 0e1ia Area Face &imentions &epth Notes

/EPO/&


65/101

Fi"er glass ,.(m' 5,'65,'mm 455mm

$. %ANU&A"TURER# Rate1 Air7o8 3nitial Resistance Final Resistance

O'ERAT!N(ATA - - -". TE#T Test Air Temp. Range Test Air Rel.H$m. Range Test Air Flo8Rate #amp. Tip &iam&$st Fee1ing Rate

ATA /5-'59* :;5< (m=h 4 mm ; mg=m. TE#T 3nitial Resistance 3nitial E>ciency .( ?m A%g E>ciency .( ?m Final Resistance

RE#U)T# 5Pa '/.;< 4'.(< PaA%erage &$st @eight Arrestance &$st Hol1ing *apacity Note As Re$ire1

B,,< ;'5g

>

2>

6>

C>

A>

1>>

> 1>> 2>> 3>> 6>> 7>> C>> B>> A>> D>> 1>>>

&9>? 47& A g B

7

C;C7@;DA!B#4)mp

&9>? 47& A g B

>

1>>

2>>

3>>

6>>

7>>

> 1>> 2>> 3>> 6>> 7>> C>> B>> A>> D>> 1>>>

P*7>>9*7&*/P

>

6>

A>

12>

1C>

2>>

> 7>> 1>>> 17>> 2>>> 27>> 3>>> 37>> 6>>> 67>> 7>>>

%C*4+/0 A m"8h B

P*7>>9*7&*/P

&ust loaded filter

;lean filter

eig$teig$tarrestancearrestance

%M%M

aerageaerageefficiencyefficiency

%M%M

classclassE! ""4E! ""4

initialinitialefficiencyefficiency

at );@ 3mat );@ 3m


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?0A?0Amm#)#)#)A#)Amm4)4)

4)A4)Amm

AAmm?0?0

@)E@)Emm?)?)?)E?)Emm#)#)

#)E#)Emm4)4)

4)E4)Emm4040

40E40Emm

D1D1

D2D2D


67/101

ore information on filter performance

7asier to understand

aster

>mall differences between different laboratories

Possible to use the same techniEue at installations

ilter may ha,e complete different properties in actual

conditions- for e


68/101

ffiieny in real lifeffiieny in real life7fficiency #4)m A

#

2#

4#

F#

#

1##

# 2### 4### F### ### 1####

*unning time Ah

EJ" glass

EJ" synt$etic

"e!t of eletro!tati effet


69/101

i!opropanol te!t

die!el fu'e!

?*7


70/101

A/HA o''ittee i! working on a !tandard

A/HA 72.2

CN "C 1D7


71/101

Particle ;ounter

;omputer

=al,e

Pump

anometer

G -

/a'pling pro*e

down!trea'

?1, pri'ary flow

?2, flow to partile ounter

4igure 1- sampling system

>ummary(general ,entilation


72/101

>ummary general ,entilation

Old te!t 'et#od! will *e replaed

0rational partile effiieny will *e t#e new

te!t 'et#od Fworld wide@

"e!ting in atual in!tallation! will give 'ore

infor'ation a*out real propertie! of air filter!

"e!t 'et#od! - partiulate Air"e!t 'et#od! - partiulate Airfilter!filter!


73/101

filter!filter!

.7P% and +P% filters

"otal 'e#anial olleting effiieny%%


74/101

#)#)

?)?)

@)@)

2)2)

))),1),1 11 1)1)

Particles sie 3mParticles sie 3m

5iffusion effect5iffusion effect

:nterception effect:nterception effect

>training effect>training effect

1))1))

:nertia :nertia

"e!t 'et#od!-A*!olute filter"e!t 'et#od!-A*!olute filter


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/ld test methods/ld test methods &/P test #")m3&/P test #")m3

B> "92 #F$)m3#4H )m for ;hinese ,ersionB> "92 #F$)m3#4H )m for ;hinese ,ersion

%@/* I44(11 soda salt5#1H )m3%@/* I44(11 soda salt5#1H )m3

C7>(*P(;;##H1 #1(#2 )m3C7>(*P(;;##H1 #1(#2 )m3

@ew testmethod@ew testmethod 7@ 122 PP>37@ 122 PP>3

"e!t 'et#od!"e!t 'et#od!


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/,erall efficiency/,erall efficiency

+eak test ( >canning+eak test ( >canning

"e!t 'et#od! - overall effiieny"e!t 'et#od! - overall effiieny


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monodisperse aerosol #" )m3 photometer mass concentration3

efficiency at #" )m particles

polydisperse aerosol

particle counter size and number3

PP>

5OP test

E! 1#22

"e!t'et#od!"e!t'et#od!- eak te!t- eak te!t


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photometer mass concentration3photometer mass concentration3

1## and 2# air flow1## and 2# air flow

low sensiti,itylow sensiti,ity

photometer J cold &/Pphotometer J cold &/P

higher sensiti,ity than &/P testhigher sensiti,ity than &/P test

particle counterparticle counter

leakage test at PP>leakage test at PP>

high sensiti,ityhigh sensiti,ity

5OP test

>canning it$

p$otometer

E! 1#22 (!eE! 1#22 (!e

"e!t rig for %artile !anning"e!t rig for %artile !anning


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5E>5E>

p Gilterp Gilter

Laser sensorsLaser sensors

7 );1 3m7 );1 3m

7 );1 3m7 );1 3m

7 );1 3m7 );1 3m

7 );1 3m7 );1 3m

E! 1#22B1E! 1#22B1

&estmet$o.&estmet$o.

7 );1 3m7 );1 3m

5ilution

"e!t rig for 0ilter la!!e! H1> to I1B


80/101

Oerall efficiencyOerall efficiencyat -PP>at -PP>

%M%M

#07#0 +1)+1)

Gilter classesGilter classesE! 1#22B1E! 1#22B1

local lealocal lea(%(%


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74074044;044;0

44;4044;40

7#07#0

44;44044;44044;444044;4440

44;4444044;44440

44;44444044;444440

+1)+1)

+11+11+12+12

+1


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Centilation flters

A#HRAE flters

=entilation filters %>.*%7 filters3


83/101

P/E G:L&E/P/E G:L&E/

Pleate. PanelPleate. Panel

*AD G:L&E/*AD G:L&E/

+:BCAP+:BCAP +:BGLO+:BGLO

Dlass fi'er filterDlass fi'er filter

>BGLO>BGLO

>ynt$etic filter>ynt$etic filterCO-PAC& G:L&E/CO-PAC& G:L&E/

A:/OPACA:/OPAC


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Pleate. Panel (D@Pleate. Panel (D@ +:BCAP +G#)20 (D


85/101

B Lo cost

B Extremely

goo. me.ia

B VB>$ape

B 5istance

ri''on

Calulation of 'edia area


86/101

.eight K &epthK2K L Pockets

Co'pat filter!


87/101

A:/OPACA:/OPAC


88/101

B Lig$tB !o metal parts

(com'usti'le

B +ig$ capacity

B Lo .PB Long life time

Plastic frame an. $ot melt

separators

%C*/P%; G*77@ "GP 6 "GP.


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- Very liht :3 7

Documents

Air Fillter - Ly Thuyet Loc Cho Cleanroom