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INTRODUCTION

Calculator for methodological tool

Tool to determine the mass flow of a greenhouse gas in a gaseous streamVersion 02.0.0

OptionFlow of gaseous

stream

Volumetric

fraction

Option A Volume - dry basis dry basis

Option B Volume - wet basis wet basis

Option C Volume - wet basis dry basis

Option D Mass - dry basis wet basis

Option E Mass - wet basis dry basis

Option F Mass - wet basis wet basis

Weblink to the tool: Tool to determine the mass flow of a greenhouse gas in a gaseous stream

Sequence of steps required for the use of this calculator

STEP 1 Define project name

STEP 2 Select calculation method

STEP 3 Input data

Purpose of the calculator

This calculator follows the procedures given in this tool. It contains the equations used in the calculation processes and shows

the relationship between the parameters, including whether parameters are monitored, not monitored or calculated. It does not

describe or enforce the scope or applicability conditions for using tool. Therefore, the calculator must be used with reference to

both the tool and the underlying methodology.

Overview of the tool

The mass flow of a particular greenhouse gas is calculated based on measurements of (a) the total volume or mass flow of the

gas stream and (b) the volumetric fraction of the gas in the gas stream. The volume flow, mass flow and volumetric fraction

may be measured on a dry basis or wet basis. Depending on these measurement bases the tool provides eight different

options to determine the mass flow of a particular gas (options A to F below).

PROJECT TITLE

OPTION

INPUTS

UNFCCC Calculator

Determining the mass flow of a GHG in a gaseous stream 2
https://cdm.unfccc.int/UserManagement/FileStorage/UJBDVFYLQKSEWCM73XG14Z692TRHO0https://cdm.unfccc.int/UserManagement/FileStorage/UJBDVFYLQKSEWCM73XG14Z692TRHO0

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Tool to determine the mass flow of a greenhouse gas in a gaseous streamVersion: 02.0.0

Project Title: Project 001.C

Project Commissioning Date:

Developers:

Other 1:

Other 2:

Select the correct calculation option using the "OPTION SELECTION" (STEP 2)

To clear the Input form, click this button

Methodogical Tool

STEP 1 Define project name

OPTION

CLEAR

UNFCCC Calculator

Determining the mass flow of a GHG in a gaseous stream

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Tool to determine the mass flow of a greenhouse gas in a gaseous stream Version 02.0.0

To change the identification of the project go to "PROJECT TITLE"

(back to STEP 1)

Once you have selected the calculation method the following step is "STEP 3" Input data

Input the information by clicking "INPUTS" button

ProjeSTEP 2 Select calculation

The correct option for calculating the mass flow of greenhouse gas (GHG) i in a gaseousstreamis based on measurements of (a) flow of the gaseous stream; and (b) volumetricfraction of GHG i:

Gaseous stream flowmeasured on volume or

massbasis?

Volume flow measured ondryor wetbasis?

Volumetric fraction ofGHG imeasured on dryor wetbasis?

Mass flow measured ondryor wetbasis?

Volumetric fraction ofGHG imeasured on dry

or wetbasis?

Volume

Mass

Dry

Dry

Wet

Wet

FLOW CHART TO SELECT OPTIONS

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INPUTS RESULTS

Selection The mass flow of greenhouse gas

Selection de Option from Method Flow Chart OPTION F 6 The calculation option used was:

Gaseous flow measurement basis: Mass flow - wet basis

Volumetric fraction measurement basis: wet base (vi,t,wb)

Definitions

Greenhouse gas i: CH4 Required

Monitored parameters

Gaseous flow - value (kg/h): 3 Required

Volumetric fraction -value (m gas i/m wet gas): 0.250

Additional definitions and parameters

Pressure, Pt Pa: 100 Not required I. To select another calculation option go to

Temperature,Tt : K : 319 Not required II. To change the title of the project go to "Pr

Absolute humidity calculation option: Option 2 III. To clear the input data click the button "C

Moisture content,CH2O,t,db,n (mg H2O/m3

dry gas) : Not Required IV.To see the sheet calculations click the bu

H20 saturation pressure, PH20,t,Sat Pa: 10 Not required

Volumetric fraction, measured on wet basis (vi,t,wb)vi,t,wb C2F6

vi,t,wb C3F8

vi,t,wb C4F10

vi,t,wb C5F12

vi,t,wb C6F14

vi,t,wb c-C4F8

vi,t,wb CF4

vi,t,wb CH4 0.250 Required

vi,t,wb N2O

vi,t,wb SF6

vi,t,wb N2 0.750

vi,t,wb H2O Required

Sum of vi,t,wb = 1

Project 001.CSTEP 3 Input data

UNFCCC CalculatorDetermining the mass flow of a GHG in a gaseous stream 2/13/2014

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Volume flow (dry basis) and volumetric fraction (dry or wet basis)

Project 001.C

DATA FROM INPUTS SHEET

Greenhouse gas i:

Volumetric flow of the gaseous stream Vt,db (m3dry gas/h)

Volumetric fraction for each gas i in the gaseous flow:

vi,t,db C2F6 m gas i/m dry gas Moisture content,CH2O,t,db,n (kg H2O/m3

dry

vi,t,db C3F8 m gas i/m dry gas Temperature of the gaseous stream, T t (K

vi,t,db C4F10 m gas i/m dry gas



vi,t,db c-C4F8 m gas i/m dry gas CALCULATION

vi,t,db CF4 m gas i/m dry gas Equation (6)

vi,t,db CH4 m gas i/m dry gas

vi,t,db N2O m gas i/m dry gas

vi,t,db SF6 m gas i/m dry gas i,t =

vi,t,db N2 m gas i/m dry gas

Sum of vi,t,db= Equation (5)

Volumetric fraction i gas m gas i/m dry gas Fi,t =

Pressure, Pt (Pa):

Temperature,Tt (K):

PARAMETERS NOT MONITORED

Parameter Value Units

MMi kg / kmol

Ru 8,314 Pa.m3

/kmol.K

a) Measure the moisture content of the gaseo

dry gas; or

b) Demonstrate that the temperature of the g

Note: Flow measurement on a dry basis is n

the gaseous stream is dry to use this option.

OPTION A

Universal ideal gases constant

Description

Molecular mass of gas k

Volumetric fractions should sum to 1. Check

the inputs ti,dbt,i,dbt,ti, vVF

tu

it

ti,T*R

MM*P


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Volume flow (wet basis) and volumetric fraction (dry basis)

Project 001.C

DATA FROM INPUTS SHEET MOISTURE CONTENT CALCULATION

Note: This option requires calculation of absolute hu

Greenhouse gas i: It can be determined from:

a) OPTION 1) measurement of the moisture

Volumetric flow of the gaseous stream Vt,wb = (m wet gas/h) Equation (1) mH2O,t,db


b) OPTION 2) assuming that the gaseous stream is dr

vi,t,db C2F6 m gas i/m dry gas Equation (4) mH2O,t,db,Sat



vi,t,db C5F12 m gas i/m dry gas Selected:

vi,t,db C6F14 m gas i/m dry gas H20 saturation pressure, PH20,t,Sat

vi,t,db c-C4F8 m gas i/m dry gas

vi,t,db CF4 m gas i/m dry gas Equation (3)

vi,t,db CH4 m gas i/m dry gas


vi,t,db SF6 m gas i/m dry gas Equation (2)


Sum of vi,t,db= Equation (4) mH2O,t,db,Sa

Volumetric fraction i gas m gas i/m dry gas CALCULATION

Pressure, Pt (Pa): Equation (6)

Temperature,Tt

i,t =


Parameter Value Units Equation (8)

MMi kg / kmol

MMH2O 18 kg / kmol vH2O,t,db =

Ru 8,314 Pa.m3/kmol.KPn 101,325 Pa Equation (7)

Tn 273 K

t,db =

Equation (5)

Fi,t =

Temperature at normal conditions

Molecular mass of gas H2O

OPTION B

Description


Universal ideal gases constantAbsolute pressure at normal conditions

ti,dbt,i,dbt,ti, vVF

*(MMk

dbt,k,dbt,

nu

dbt,nndb,t,

T*RMM*P

ndb,t,

6

ndb,t,H2O,

*10

C

Satt,H2O,t

Satt,H2O,

p(P

*p

H2O

tdbt,H2O,

dbt,H2O,MM

MM*m

v/(1VV wbt,tbt,

tu

it

ti,T*R

MM*P


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Volume flow (wet basis) and volumetric fraction (wet basis)

Project 001.C

DATA FROM INPUTS SHEET CALCULATION

Equation (11)

Greenhouse gas i:

Vt,wb,n

=

Volumetric flow of the gaseous stream in time interval ton a wet basis at normal conditions

Vt,wb = (m3dry gas/h) Equation (10)


i,n =

vi,t,wb C2F6 m gas i/m wet gas

vi,t,wb C3F8 m gas i/m wet gas Equation (9)


vi,t,wb C5F12 m gas i/m wet gas Fi,t =


vi,t,wb c-C4F8 m gas i/m wet gas

vi,t,wb CF4 m gas i/m wet gas

vi,t,wb CH4 m gas i/m wet gas

vi,t,wb N2O m gas i/m wet gasvi,t,wb SF6 m gas i/m wet gas

vi,t,wb N2 m gas i/m wet gas

vi,t,wb H2O m gas i/m wet gas

Sum of vi,t,wb=

Volumetric fraction i gas m gas i/m wet gas

Pressure, Pt (Pa): 100

Temperature,Tt (K): 319



MMi kg / kmol

Ru 8,314 Pa.m3/kmol.K

Pn 101,325 PaTn 273 K Temperature at normal conditions

OPTION C

Description



Absolute pressure at normal conditions

*VV wbt,nwb,t,

nu

inni,

T*R

MM*P

wbt,i,nwb,t,ti, vVF


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Mass flow (dry basis) and volumetric fraction (dry or wet basis)

Project 001.C

DATA FROM INPUTS SHEET

Greenhouse gasi:

Mass flow of the gaseous stream in time interval ton a dry basis at normal conditions

Mt,db = (kg dry gas/h)


Moisture content,CH2O,t,db,n (kg H2O/m

vi,t,db C2F6 m gas i/m dry gas Temperature of the gaseous stream, Tvi,t,db C3F8 m gas i/m dry gas



vi,t,db C6F14 m gas i/m dry gas CALCULATION

vi,t,db c-C4F8 m gas i/m dry gas Equation (3)

vi,t,db CF4 m gas i/m dry gasvi,t,db CH4 m gas i/m dry gas t,db =


vi,t,db SF6 m gas i/m dry gas

vi,t,db N2 m gas i/m dry gas Equation (13)

Sum of vi,t,db =

t,db =

Volumetric fraction i gas m gas i/m dry gas

Pressure, Pt (Pa): Equation (12)

Temperature,TtVt,db =


Parameter Value Units Equation (6)

MMi kg / kmol

Ru 8,314 Pa.m

3

/kmol.K i,t =

Equation (5)

Fi,t =


Note: Flow measurement on a dry bas

that the gaseous stream is dry to use t

a) Measure the moisture content of th

H2O/m3dry gas; or

b) Demonstrate that the temperature

OPTION D

Description



(MMi

dt,i,dbt,

tu

dbt,t

dbt,T*R

MM*P

dbt,dbt,dbt, /MV

tu

it

ti,T*R

MM*P


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Mass flow (wet basis) and volumetric fraction (dry basis)

Project 001.C

DATA FROM INPUTS SHEET MOISTURE CONTENT CALCULATION

Note: This option requires calculation ofabsolu

Greenhouse gas i: It can be determined from:

a) OPTION 1) measurement of the moisture

Mass flow of the gaseous stream Mt,wb = (kg wet gas/h) Equation (1) mH2O,t,db


b) OPTION 2) assuming that the gaseous strea

vi,t,db C2F6 m gas i/m dry gas Equation (4) mH2O,t,db,Sat


vi,t,db C4F10 m gas i/m dry gas Selected:

vi,t,db C5F12 m gas i/m dry gas H20 saturation pressure, PH20,t,Sat


vi,t,db c-C4F8 m gas i/m dry gas Equation (3)

vi,t,db CF4 m gas i/m dry gas

vi,t,db CH4 m gas i/m dry gas Equation (2)


vi,t,db SF6 m gas i/m dry gas Equation (4) mH2O,t,db,Sat


Sum of vi,t,db= CALCULATION

Equation (14)

Volumetric fraction i gas m gas i/m dry gas Mt,db = kg/h

Pressure, Pt (Pa):

Temperature,Tt (K) Equation (3)

PARAMETERS NOT MONITORED MMt,db = kg dry


MMi kg / kmol Equation (13)

MMH2O 18 kg / kmol

Ru 8,314 Pa.m3/kmol.K t,db = kg dry

Pn 101,325 Pa

Tn 273 K Equation (12)

Vt,db = m dry

Equation (6)

i,t = kg/m

Equation (5)

Fi,t = kg gas/

OPTION E

Temperature at normal conditions

Description


Molecular mass of gas H2O




MM*(MMi

dbt,i,dbt,

nu

dbt,n

ndb,t,T*R

MM*P

t,

6dbt,H2O,

*10

C

H2t

tH2O,

p(P

p

tu

it

ti,T*R

MM*P

)MM*(MM ii

dbt,i,dbt,

wbt,dbt, m1/MM

tu

dbt,t

dbt,T*R

MM*P

tdbt,dbt, /MV


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Mass flow (wet basis) and volumetric fraction (wet basis)

Project 001.C

DATA FROM INPUTS SHEET CALCULATION

Equation (17)

Greenhouse gas i: CH4

MMt,wb

= 113

Mass flow of the gaseous stream in time interval ton a wet basis

Mt,wb = 3 (kg wet gas/h) Equation (16)

Volumetric fraction for each gas iin the gaseous flow:

t,wb,n = 5.0640

vi,t,wb C2F6 - m gas i/m wet gas

vi,t,wb C3F8 - m gas i/m wet gas Equation (15)


vi,t,wb C5F12 - m gas i/m wet gas Vt,wb,n = 0.5924


vi,t,wb c-C4F8 - m gas i/m wet gas Equation (10)

vi,t,wb CF4 - m gas i/m wet gas

vi,t,wb CH4 0.2500 m gas i/m wet gas i,n = 0.7138

vi,t,wb N2O - m gas i/m wet gas

vi,t,wb SF6 - m gas i/m wet gas Equation (9)vi,t,wb N2 0.7500 m gas i/m wet gas

vi,t,wb H2O - m gas i/m wet gas Fi,t = 0.105

Sum of vi,t,db= 1 OK

Volumetric fraction i gas 0.250 m gas i/m wet gas

Pressure, Pt (Pa): 100

Temperature,Tt (K): 319



MMi 16 kg / kmol

Ru 8,314 Pa.m3/kmol.K

Pn 101,325 PaTn 273 K Temperature at normal conditions

OPTION F

Description




i,wbt,i,nwb,t,ti, vVF

*( ,,, i

wbtiwbt MMM

nu

wbt,n

nwb,t,T*R

MM*P

nwb,t,wbt,nwb,t, /MV

nu

inni,

T*R

MM*P


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Data and parameters not monitored

Ru = 8314 Pa.m3/kmol.K Universal ideal gases constant

MMi C2F6 138 kg / kmol Molecular mass of gas i



MMi C5F

12288 kg / kmol Molecular mass of gas i


MMi c-C4F8 200 kg / kmol Molecular mass of gas i

MMi CF4 88 kg / kmol Molecular mass of gas i

MMi CH4 16 kg / kmol Molecular mass of gas i

MMi N2 28 kg/kmol Molecular mass of gas i

MMi N2O 44 kg / kmol Molecular mass of gas i

MMi SF6 146 kg / kmol Molecular mass of gas i

MMH2O H2O 18 kg/kmol Molecular mass of gas i

Pn = 101325 Pa.m3/kmol.K Total pressure at normal conditions

Tn = 273.15 K Temperature at normal conditions

Definitions

SymbolCO2

CH4

N2O

SF6

CF4

C2F6

C3F8

C4F10

c-C4F8

C5F12

C6F14

Data and paramete Units Description

t = h Hour or smaller time interval

Vt,wb C. D m wet gas/h Volumetric flow of the gaseous stream in time interval t on a wet basis

Vt,db A, B m dry gas/h Volumetric flow of the gaseous stream in time interval t on a dry basis

vi,t,db A,C,E,G m gas i/m dry gas Volumetric fraction of greenhouse gas i in a time interval t on a dry basis

vi,t,wb B,D,F,H m gas i/m wet gas Volumetric fraction of greenhouse gas i in a time interval t on a wet basis

Mt,wb G,H kg/h Mass flow of the gaseous stream in time interval t on a wet basis

Mt,db E,F kg/h Mass flow of the gaseous stream in time interval t on a dry basis

= mg H2O/m3 dry gs Gas Moisture Content - Concentration of water r in a dry gas stream, as ex

Tt = K Temperature of the gaseous stream in time interval t

Pt = Pa Pressure of the gaseous stream in time interval t

pH20,t,Sa = Pa Saturation pressure of water for a given temperature, Tt in time interval t

Vk,t,db = m gas k/m dry gas Volumetric fraction of gas k in the gaseous stream in time interval t on a dry

Vk,t,wb = m gas k/m wet gas Volumetric fraction of gas k in the gaseous stream in time interval t on a we

Nitrous oxide

Sulfur hexafluoride

Perfluorocyclobuta

Perfluoropentane

Perfluorohexane

Compound

Perfluoromethane

Perfluoropropane

Perfluoroethane

Perfluorobutane

Carbon dioxide

Methane

db

hnOHC ,,2

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Equivalent Units

1 kg = 1000000 mg

ressed in the USEPA CF42 method 4 at normal conditions, in the time interval t

basis

basis

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Meth Note05 (1)