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8/15/2019 MiniStack Calculations

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Isokinetic Sampling Train M9096 Variable of 12

Isokinetic Sampling Train M9096

Metric Calculations

Profile Version

Variables Used In Calculations

=

=

=

= Dry Molecular Weight of the Stack Gas

=

=

=

=

Bws = Percentage of Water Vapour Present on a Volume/Volume Basis

= Percentage of Water Vapour in the Gas Stream on a Volume/Volume Basis

= Molecular Weight of the Stack Gas on a Wet Basis

Vmc =

Vwc =

=

0.001245 = 22.44/!" # $$$% !Molar Gas Volume at S&P an' Molecular Weight of Water !"%%

=

=

=

=

=

= Pitot &u(e )oefficient !S*&ype + $."4, -llipsoi'al &ype + % 'eally Shoul' Be a )ali(rate' &ip an' &his Value 0se'

Ps 1(solute Stack Pressure mbar

P( Barometric Pressure mbar

Pstatic Static Pressure mbar

M '

%CO2 )ar(on Dio#i'e )ontent in Gas as a Percentage %

%O2 #ygen )ontent in Gas as a Percentage %

%N 2 3itrogen )ontent in Gas as a Percentage %

CO!ppm% )ar(on Mono#i'e )ontent in Gas ppm

B s

M s

Volume of Gas Pulle' &hrough the Meter at S&P m

Volume of Water as a Gas )on'ense' from the Stack Gases hen Vmc !m5% of Gas is Pulle' &hrough the Meter m

V 62 Volume of )on'ense' Water )ollecte' in a Moisture &est m! or g

Dn 3o77le Diameter mmQ

m 'eal 8lo 9ate &hrough the Sample &rain "l min#$

Pm

Pressure in the Gas Meter !in Simple Systems this is the Barometric Pressure Pb% mbar

T m

1(solute &emperature of the Gas Meter (in Simple Sstems this is the !mbient !ir Temperat"re #lose to the Meter (Tamb

o# $ 2%&' &

B m

Percentage of Water Vapour in the Gas Meter on a Volume/Volume Basis 1ssume' to (e :ero as Most Gas Meters are 1fter the Drying System %

C p



Isokinetic Sampling Train M9096 Variable o

=

=

T s 1(solute &emperature of the Stack Gases (!)erage Stack Temp* o# $ 2%&' &

∆P Differential Pressure of the Velocity 6ea' as Measure' (y the Pitot &u(e mbar



Isokinetic Sampling Train M9096 Variable Page . of 12


Metric Calculations

Profile Version

Con,ersion of Units

Pressure

Pressure is measured in a ,ariet- of unit and as a result often leads to confusion. t+e follo/ing are useful inter#con,ersions

$ mbar =

$ mbar = $ +pa

$ mbar = 0*12006 mm3g

$ mbar = $00 Pa

$0$*'2 mbar = 160 mm3g

= $ mm3g

= 0*09401 mbar

= 160 mm3g

= 9*4$ Pa

$ Pa = $ )m ") is a )e/ton in t+is case )ormal as used else/+ere

$0$'2 Pa = 160 mm3g

$ mm3g = $*'' mbar

Temperature

In t+is e5uation is al/a-s assumed to be in absolute unitsbsolute Temp = Temperature in Celcius 7 '1 &

$0*' mm3'8

$*6 mm3'8

$ mm3'8

$0'* mm3'8

$ mm3'8



Isokinetic Sampling Train M9096 Variable Page



Isokinetik lorate #alc"lation

M9096 Isokinetic lo/rate Calculation

S#'$'2'#$

:lement Value Unit #$a&a'&

Stack &emperature 21$*10 'eg ) N)**&s Selected Ca&c+&atd

Stack Pressure $0$* kPa !gauge% 3.0 mm )o;;le ,&)wrat

Stack Velocity $$*$' m/sec 4.5 mm 4.? -.6 & / m

)onsole &emperature '0*00 'eg ) 6.0 mm

1(solute Pressure $0$*' kPa !a(solute% 7.5 mm

3o77le 1rea ?.@$45

)on'ition 8actor $.54;$

)alculate' 8lo 5.A"24


S#'$'2'#'


Stack &emperature 6$0*'1 'eg ) N)**&s Selected Ca&c+&atd

Stack Pressure $0$*$ kPa !gauge% 3.0 mm )o;;le ,&)wrat

Stack Velocity $$*$9 m/sec 4.5 mm 4.? -.54 & / m



3o77le 1rea ?.@$45

)on'ition 8actor $.55"

)alculate' 8lo 5.?42"



Isokinetik lorate #alc"lation

Page %


S#'$'2'#


Stack &emperature 6$'*$4 'eg ) N)**&s Selected Ca&c+&atd

Stack Pressure $0$* kPa !gauge% 3.0 mm )o;;le ,&)wrat

Stack Velocity $$*1 m/sec 4.5 mm 4.? -.59 & / m



3o77le 1rea ?.@$45

)on'ition 8actor $.55

)alculate' 8lo 5.?@2@



Stack &emperature $'$*00 'eg ) N)**&s Selected Ca&c+&atd

Stack Pressure $0$*$ kPa !gauge% 3.0 mm )o;;le ,&)wrat

Stack Velocity $' m/sec 4.5 mm 4.? .52 & / m



3o77le 1rea ?.@$45

)on'ition 8actor $.;45;

)alculate' 8lo ".??A



Isokinetic Sampling Train M9096 #alc"lations Page of 12


Metric Calculations

Profile Version

Calculations

JENV No.

Sample I!. Incinerator

Sampling <ata

P' = $0$*00 mbar

Pstatc = 0*=9 mbar

= 6*60 %

= 9*$0 %

= 19*00 %

CO (m = $*0000 ppm

Bws = *00 %

D = To be <etermined "mm

Qm = *64

Pm = $0$*00

Tm = '9*00 &

Bwm = 0*00

C = 0*4=

Ts = 4==*10 &

DP = $*9$ mbar

bsolute Pressure of t+e Stack >as

mbar

Ps = $0$*=9 mbar

Molecular ?eig+t of <r- >as Stream

Md + '1*960

Molecular ?eig+t of Stack >as "?et

Ms = '1*619

Molecular ?eig+t of Stack >as "?et

D = '*9446 mm

Pm + P( + Barometric Pressure an' &m is the am(ient air temp in the =icinity of the gas meter.

% CO 2

% O 2

% N 2

'eal florate through the sample train !l min#$%

!n sample systems this is the (arometric pressure Pb mbar%

Percentage of ater =apour in the gas meter on a =olume/=olume (asis assume' to (e 7ero as most of gasmeters are after 'rying system %

&he i'eal florate m is m5 per hour hich is 5.A" l min* in this e#ample it can (e any rate ithin the capacity of the system (eing use'.

t is unlikely that a 5.$ mm no77le oul' (e a=aila(le so it is usual practice to choose the nearest si7e a=aila(le. t is safest to chose the slightlysmaller no77le than calculate' as this ill ensure that there is sufficient capacity to sample all the sample points. n this case e oul' chose the 5

Dn=|( const .Qm P

m

T mC p (100−Bwm

100−Bws )| T s M

s

Ps( ΔP )

avg )



Isokinetic Sampling Train M9096 #alc"lations of 12

. . .




Setting t+e lo/ @ate of t+e Sampler

&he flo setting is similar to 'etermining the sokinicity. We nee' to set Vs + Vn i.e =elocity in the stack is e<ual to the =elocity entering the no77le.

+ $0*$04

<etermination of Particulate Sampling @esults

+ 2*0000 ml or g

+ *00 mm

+ $0$*00 mbar

+ '9*00 &

+ 0*4= Pitot tube coeficient "S#T-pe

+ 4==*10 &

DP + $*9$ mbar

+ 0*20'9

+ 0*'00

+ 0*=10 >as Meter Calibration actor to account for calibration meter

+ 0 min "Time Pump /as running and gas being sampled

Ds + $*02 mg "Total amount of <ust Collected including /as+ing

?ater Vapour in Stack

+ 0*0=6

Volume of >as Sampled at Standard Condition

1t 2;5 C $.52? kPa the )orrecte' Volume of gas 'ran (y the gas meter ill (e

+ 0*06=1

+ 0*=0'6 %

Velocit- of Stack >ases

+ '2*9960

lo/ of >ases in t+e <uct

+ 14=*2

l min#$

V 32O

D

Pm

T m

C

T s

#s

m

'

"Cross#sectional rea of t+e StackV m m "Volume of >as Pulled t+roug+ t+e meter as recorded b- t+e meter

! d

m"

m" (Vol"me of Gas P"lle3 thro"gh the meter at STP an3 on a 3r gas basis'

m s#$

m min#$




lo/ at <r- Standard Conditions

+ $2$*2$4=

Particulate Concentration at STP and on a <r- >as Aasis

+ $6*'10

Particulate :mission @ate

+ 0*014

+ $=*9942

Percentage Isokinicit-

+ $0$*$1 %

m min#$

mg )m# !Particulate )oncentration at 2;5 C $.52? kPa an' on a 'ry gas (asis%

kg +r#$

Particulate Concentration at STP and on a dr- gas basis at $0 % 8'

mg )m#



Worksheet 1nalysis

<ust ParticulateGra=imetric

1nalyst Date

Signature E-3V 3.

Sample D.nitial Weight 8inal Weight Dust Weight DGM nitial DGM 8inal 1ir Volume 9esult Dust 8inal 9esult

!gram% !gram% !mg% !liter% !liter%

S#$=06=$ $.?$@ $.?2$ .

)otes Super=isor

Date

Signature

!3m5% !mg/3m5% !mg/3m5%

ministack calculations

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