JCM_TH_F_PM_ver01.0

JCM Proposed Methodology Form
Cover sheet of the Proposed Methodology Form
Form for submitting the proposed methodology
Host Country

Kingdom of Thailand

Name of the methodology proponents Marubeni Corporation
submitting this form
Sectoral scope(s) to which the Proposed 1.
Methodology applies

Energyindustries(renewable-/non-renewable sources)

Title of the proposed methodology, and Introduction of digital solution (AI analysis,version numberetc.)

toimproveboilerefficiency
List of documents to be attached to this form

The attached draft JCM-PDD:(please check):Additional information

Date of completion

11/07/2022

History of the proposed methodology
Version1.0

Date
11/07/2022

Contents revisedFirst editioncombustionJCM_TH_F_PM_ver01.0

A. Title of the methodology
Introduction of digital solution (AI analysis, etc.) to improve boiler combustion efficiency,
Version 1.0

B. Terms and definitions
Terms

Definitions

Power generation optimization

Digital solution which analyzes the power generation

technology

system operation data and provides the control of power
generation system with the optimized command to improvethe efficiency as a result of optimized power generation.

Power generation system

System consisting of boiler, generator and auxiliary
equipment to generate electricity.

Commissioning

Performanceverificationofthepowergeneration

optimization technology.

C. Summary of the methodology
Items
GHG

emissionmeasures

Summary
reduction Introduction of power generation optimization technology intopower

generation

systemimproves

power

generation

efficiency, which leads to reduction of fuel and hence GHG
emissions.
Calculationofemissions

reference Reference emissions are GHG emissions from reference power
generation system, calculated with project emissions and rateofpowergeneration

efficiency

improvement

duetointroduction of the project power generation optimization
technology.
Calculation
emissionsofproject Project emissions are GHG emissions from project power
generation system, calculated with fuel consumption by the
project power generation system, net calorific value and CO2
emission factor for consumed fuel.
Although project power generation optimization technology

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requires additional electricity consumption, it is small andnegligible in calculation of project emissions.
Monitoring parametersFuel consumption of the project power generation system

Electric power of the project generator

D. Eligibility criteria
This methodology is applicable to projects that satisfy all of the following criteria.
Criterion 1

Power generation optimization technology is newly introduced to the power
generation system.

E. Emission Sources and GHG types
Reference emissions
Emission sources
Fuel consumption by reference power generation system

GHG types
CO2

Project emissions
Emission sources
Fuel consumption by project power generation system

GHG types
CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated by multiplying the project emissions by rate of power
generation efficiency improvement due to introduction of the project power generation
optimization technology, denoted by “η”.
η is fixed ex-ante in a conservative manner to ensure net emission reductions. How to set η isinstructed in Section I of this methodology.
F.2. Calculation of reference emissionsܴ‫ܧ‬௣ = ෍൫‫ܥܨ‬௉௃,௜,௣ × ܰ‫ܸܥ‬௉௃,௙௨௘௟,௜ × ‫ܨܧ‬௉௃,௙௨௘௟,௜ × ߟ௜ ൯௜

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WhereREp

Reference emissions during the period p [tCO2/p]

FCPJ,i,p

Fuel consumption by the project power generation system i during the period p[mass or volume/p]

NCVPJ,fuel,iNet calorific value of fuel consumed by the project power generation system i[GJ/mass or volume]

EFPJ,fuel,iCO2 emission factor for fuel consumed by the project power generation systemi [tCO2/GJ]

ηiRatio of project power generation system i to reference power generation systemi [dimensionless]i

Identification number of the power generation system

Multiple test data with a load factor of generator are used to determine the value of ηi ex ante
as instructed in Section I of this methodology. The lowest load factor amongst the test data isset as a threshold value. Fuel consumption by the project power generation system with theload factor of generator being less than the threshold value is excluded from calculation ofreference emissions. The threshold value of load factor is determined at the time of validation.

G. Calculation of project emissionsܲ‫ܧ‬௣ = ෍൫‫ܥܨ‬௉௃,௜,௣ × ܰ‫ܸܥ‬௉௃,௙௨௘௟,௜ × ‫ܨܧ‬௉௃,௙௨௘௟,௜ ൯௜WherePEpProject emissions during the period p [tCO2/p]

FCPJ,i,p

Fuel consumption by the project power generation system i during the period p[mass or volume/p]

NCVPJ,fuel,iNet calorific value of fuel consumed by the project power generation system i[GJ/mass or volume]

EFPJ,fuel,iCO2 emission factor for fuel consumed by the project power generation systemi [tCO2/GJ]

iIdentification number of the power generation system

Multiple test data with a load factor of generator are used to determine the value of ηi ex ante
as instructed in Section I of this methodology. The lowest load factor amongst the test data is
set as a threshold value. Fuel consumption by the project power generation system with theJCM_TH_F_PM_ver01.0

load factor of generator being less than the threshold value is excluded from calculation ofproject emissions. The threshold value of load factor is determined at the time of validation.

H. Calculation of emissions reductions‫ܴܧ‬௣ = ܴ‫ܧ‬௣ − ܲ‫ܧ‬௣
WhereERp

Emissions reductions during the period p [tCO2/p]

REp

Reference emissions during the period p [tCO2/p]

PEp

Project emissions during the period p [tCO2/p]

I. Data and parameters fixed ex ante
The source of each data and parameter fixed ex ante is listed as below.
Parameter
ηi

Description of dataSource

Ratio of project power generation system i to Commissioning result
reference power generation system i

ASME PTC4
ASME PTC6

ηi is calculated with the following equation.
ߟ௜ = ܲ‫ܧܩ‬௉௃,௜ ÷ ܲ‫ܧܩ‬ோா,௜
WherePGEPJ,i Power generation efficiency of theproject power generation system iPGERE,i Power generation efficiency of thereference power generation system i
Reference power generation system is the sameas the project generation system without
activation of the project power generation
optimization technology.
PGEPJ,i and PGERE,i are calculated by means
specified in the latest version of ASME PTC4

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and ASME PTC6. Then, ηi,test is calculated foreach data set obtained for different time
periods, and p values in null-hypothesis
significance testing are calculated for each ηi,test
obtained to exclude outliers.
A default value ηi is obtained and fixed ex-anteat the time of validation to ensure net emission
reductions with the following procedure:1) ηi,test whose p value is less than 0.05 is
excluded from the data set since it is notstatistically significant.
2) An averaged ratio of power generation
efficiency change (defined as ηave) is obtainedby averaging the remained ηi,test with statisticalsignificance.
3) A standard deviation is also obtained fromthe remained ηi,test with statistical significance.
4) A default value ηi is obtained by subtracting
standard deviation (σ) from averaged energy
saving factor (ηi,ave).
ߟ௜ = ߟ௜,௔௩௘ − ߪ௜Whereߟ௜,௔௩௘ =n݅෍ ߟ௜,௧௘௦௧݊௜

1ଶ
ߪ = ඨ ෍൫ߟ௜,௧௘௦௧ − ߟ௜,௔௩௘ ൯݊௜

Number of data (ηi,test) used to calculate
standard deviation

When the power generation system i isreplaced, ηi is recalculated and fixed in thesame manner as described above.
NCVPJ,fuel,iNet calorific value of fuel consumed by the In the order of preference:
project power generation system ia) values provided by fuel

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supplier;b) measurement by the project
participants;c) regional or national default
values; ord) IPCC default values providedin table 1.2 of Ch.1 Vol.2 of
2006

IPCC

National

Guidelines

GHG

onInventories.

Lower value is applied.
EFPJ,fuel,iCO2 emission factor for fuel consumed by the In the order of preference:
project power generation system ia) values provided by fuelsupplier;b) measurement by the project
participants;c) regional or national default
values; ord) IPCC default values provided
in table 1.4 of Ch.1 Vol.2 of
2006

IPCC

National

Guidelines

GHG

on

Inventories.

Lower value is applied.