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

The Kingdom of Thailand

Name of the methodology proponents

Nippon Koei Co., Ltd.

submitting this form
Sectoral scope(s) to which the Proposed 3. Energy Demand
Methodology applies
Title of the proposed methodology, and Energy Saving by Introduction of Highversion number

Efficiency

Once-throughBoilerandInstallation of Economizer into Existing
Boiler, Version 01.0
List of documents to be attached to this form

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

Additional information
Appendix 1. Additional Information for theProposed Methodology

Date of completion

02/08/2019

History of the proposed methodology
Version01.0

Date02/08/2019

Contents revisedFirst Edition1

JCM_TH_F_PM_ver01.0

A. Title of the methodology
Energy Saving by Introduction of High Efficiency Once-through Boiler and Installation ofEconomizer into Existing Boiler, Version 01.0
B. Terms and definitions
Terms
Once-through boiler

Definitions
A once-through boiler is a boiler without recirculation
where water/steam flows through the economizer, furnacewall, and evaporating and superheating tubes, sequentially.
Once-through (OT) boiler is used to supply heat in factoryand commercial facility.

Periodical check

Periodical check is a scheduled examination of the project
boiler conducted by manufacturer or agent who isauthorized by the manufacturer in order to maintainperformance of the boiler.

Boiler efficiency

Boiler efficiency is the percentage of heat quantity used togenerate steam against total heat quantity provided by afuel.

Fuel switching

Fuel switching involves the change of fuel from the one
with higher CO2 emission factor to lower CO2 emission
factor (i.e. from coal to natural gas).

Economizer

Economizer is a mechanical device that recovers andtransfers the heat from the boiler exhaust gases to theincoming boiler feed water, which increases the overallboiler’s thermal efficiency.

C. Summary of the methodology
Items
GHG
measuresemission

Summary
reduction This methodology covers one or both of the following twomeasures: (1) the introduction of high efficiency
once-through boiler (hereinafter called “project boiler(OT)”) and (2) the installation of economizer into existing2

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boiler (hereinafter called “project boiler (EC)”).
(1) Compared with the fire tube boilers which dominate
Thailand market (hereinafter called “reference boiler(OT)”), the efficiency of “project boiler (OT)” ishigher and its fuel consumption is lower.
(2) Through the installation of economizer to the existingboiler, feed water to the boiler is preheated by using
exhaust gas heat from the boiler. It will contribute to
the reduction of fuel consumptions of existing boiler
without economizer (hereinafter called “referenceboiler (EC)”).
Thus, the introduction of once-through boiler and theinstallation of economizer into the existing boiler willcontribute to GHG emission reduction.
Calculation
emissions

ofreference Reference emissions are calculated from one or both of
the following two measures: (1) the introduction of
once-through boiler, and (2) the installation of economizer
into the existing boiler.
(1) Reference

emissionsfor

theintroduction

ofonce-through boiler (hereinafter called “referenceemission (OT)”) are calculated based on theefficiency of the boiler currently dominant in theThailand market and emission factor of the fuel ofreference boiler (OT). Conservative estimation ofreference emission (OT) is made by taking into
consideration the following points: (i)higherefficiency is applied for the reference boiler (OT),
especially in low load range (ii) lower CO2 emission
factor of fuel used in reference boiler (OT) is selectedfrom IPCC guideline.
(2) Reference

emissionsfor

theinstallationofeconomizer into existing boiler (hereinafter called“reference emission (EC)”) are calculated based on
the efficiency of reference boiler (EC) and emission
factor of the fuel of reference boiler (EC).
Conservative estimation of reference emission (EC) is3

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made by taking into consideration that lower CO2
emission factor is selected from IPCC guideline withregard to the fuel used in reference boiler (OT).
Calculation of project emissions

Project emissions are calculated from one or both of thefollowing two measures: (1) the introduction of
once-through boiler, and (2) the installation of economizer
into existing boiler.
(1) Project emissions for the introduction of once-throughboiler (hereinafter called “project emission (OT)”) arecalculated on the basis of monitored fuel consumption
and emission factor of the fuel of project boiler (OT).
(2) Project emissions for the installation of economizer
into existing boiler (hereinafter called “projectemission (EC)”) are calculated on the basis ofmonitored fuel consumption and emission factor of
the fuel of project boiler (EC).

Monitoring parameters- The amount of fuel consumption of project boiler (OT)- The amount of fuel consumption of project boiler (EC)

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

Projects involve implementation of one or both of the following two energy
efficiency improvement measures: the introduction of once-through boiler andthe installation of economizer into existing boiler.

Criterion 2

For projects that involve the introduction of once-through boiler, the project
boiler (OT) is a once-through boiler with a rated capacity of 7 ton/hour per
unit or less (equivalent evaporation).

Criterion 3

For projects that involve the installation of economizer into existing boiler,
the fuel for the project boiler (EC) shall not be heavy oil nor coal.

Criterion 4

Periodical check and maintenance by the manufacturer of boiler or authorized
agent is implemented in accordance with the manufacturer’s requirement.

E. Emission Sources and GHG types
Reference emissions

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Emission sources

GHG types

Fuel consumption by reference boiler (OT)CO2Fuel consumption by reference boiler (EC)

CO2

Project emissions
Emission sources

GHG types

Fuel consumption by project boiler (OT)CO2Fuel consumption by project boiler (EC)CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
This methodology involves implementation of one or both of the following two energy
efficiency improvement measures: (1) the introduction of once-through boiler, and (2) theinstallation of economizer into existing boiler. Therefore, reference emissions are calculated
from one or both of the following two measures, depending on the measures implemented by
the project.
(1) The emissions from reference boilers (OT):The reference emissions (OT) are calculated based on the efficiency of the fire tube boilers
which dominates the Thailand boiler market for industries and emission factor of the fuelof reference boiler (OT). In order to ensure the net emission reductions, a higher efficiencyof the reference boiler (89%) is adopted as a default value to calculate the referenceemissions (OT). In addition, 1) compared with reference boiler (OT), once-through boiler(project boiler (OT)) can maintain high efficiency even at low load range, which improves
the operating efficiency of project boiler (OT). In addition, to calculate the reference
emission (OT) in a conservative manner, the lower emission factor stated in 2006 IPCC
guideline is adopted to secure the net emission reduction from this measure.
(2) The emissions from reference boiler (EC)The reference emissions (EC) are calculated based on the efficiency of reference boiler(EC) and project boiler (EC) with the emission factor of the fuel of reference boiler (EC).
The efficiency of project boiler (EC) is improved by the heat recovery function ofeconomizer. The efficiencies of reference boiler (EC) and project boiler (EC) are provided
in the specifications of each boiler given by boiler manufacture or supplier.

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F.2. Calculation of reference emissions

RE୮ = ෍ ෍ ቆFC୮,୧,୨,୔୎(୓୘) × NCV୧,୨,୔୎(୓୘) ×௜௝෍ ෍ ቆFC୮,୧,୨,୔୎(୉େ) × NCV୧,୨,୔୎(୉େ) ×௜RE୮௝η୧,୔୎(୓୘)× EFୖ୉(୓୘) ቇ +ηୖ୉(୓୘)η୧,୔୎(୉େ)× EF୨,ୖ୉(୉େ) ቇη୧,ୖ୉(୉େ): Reference emissions during the period p [tCO2/p]FC୮,୧,୨,୔୎(୓୘) : The amount of fuel consumption of project boiler (OT) i for the fuel type j during
the period p [mass or volume unit/p]NCV୧,୨,୔୎(୓୘) : Net calorific value of fuel used by project boiler (OT) i for the fuel type j[GJ/mass or volume unit]η୧,୔୎(୓୘)ηୖ୉(୓୘)EFୖ୉(୓୘): Efficiency of project boiler (OT) i [-]: Efficiency of reference boiler (OT) [-]: CO2 emission factor of fuel used by reference boiler (OT) [tCO2/GJ]

FC୮,୧,୨,୔୎(୉େ) : The amount of fuel consumption of project boiler (EC) i for the fuel type j during
the period p [mass or volume unit/p]NCV୧,୨,୔୎(୉େ) : Net calorific value of fuel used by project boiler (EC) i for the fuel type j[GJ/mass or volume unit]EF୨,ୖ୉(୉େ) : CO2 emission factor of fuel used by reference boiler (EC) for the fuel type j[tCO2/GJ]η୧,୔୎(୉େ)η୧,ୖ୉(୉େ): Efficiency of project boiler (EC) i [-]: Efficiency of reference boiler (EC) i [-]G. Calculation of project emissions

PE୮ = ෍ ෍൫FC୮,୧,୨,୔୎(୓୘) × NCV୧,୨,୔୎(୓୘) × EF୧,୨,୔୎(୓୘) ൯୧௝+ ෍ ෍൫FC୮,୧,୨,୔୎(୉େ) × NCV୧,୨,୔୎(୉େ) × EF୧,୨,୔୎(୉େ) ൯௜PE୮௝

: Project emissions during the period p [tCO2/p]FC୮,୧,୨,୔୎(୓୘) : The amount of fuel consumption of project boiler (OT) i for the fuel type j during
the period p [mass or volume unit]

NCV୧,୨,୔୎(୓୘) : Net calorific value of fuel used by project boiler (OT) i for the fuel type j[GJ/mass or volume unit]EF୧,୨,୔୎(୓୘): CO2 emission factor of fuel used by project boiler (OT) i for the fuel type j6

JCM_TH_F_PM_ver01.0[tCO2/GJ]
FC୮,୧,୨,୔୎(୉େ) : The amount of fuel consumption of project boiler (EC) i for the fuel type j during
the period p [mass or volume unit]

NCV୧,୨,୔୎(୉େ) : Net calorific value of fuel used by project boiler (EC) i for the fuel type j[GJ/mass or volume unit]EF୧,୨,୔୎(୉େ) : CO2 emission factor of fuel used by project boiler (EC) i for the fuel type j[tCO2/GJ]

H. Calculation of emissions reductions

ER ୮RE୮PE୮۳‫܀ = ܘ ܀‬۳‫ ܘ‬− ‫۾‬۳‫ܘ‬: Emission reductions during the period p [tCO2/p]: Reference emissions during the period p [tCO2/p]: 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

Description of dataSource

NCV୧,୨,୔୎(୓୘)

Net calorific value of fuel used by(1) Net calorific value (lower heating

project boiler (OT) i for the fuelvalue) provided by fuel supplier,type j [GJ/mass or volume unit](2) IPCC default values at the lower
limit in Table 1.2 of Chapter 1 of Vol. 2of “2006 IPCC Guidelines for National
GHG Inventories” (when (1) is notavailable, apply (2))

NCV୧,୨,୔୎(୉େ)

Net calorific value of fuel used by (1) Net calorific value (lower heating
project boiler (EC) i for the fuel value) provided by fuel supplier,type j [GJ/mass or volume unit](2) IPCC default values at the lower
limit in Table 1.2 of Chapter 1 of Vol. 2
of “2006 IPCC Guidelines for National
GHG Inventories” (when (1) is notavailable, apply (2))

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EF୧,୨,୔୎(୓୘)

CO2 emission factor of fuel used by IPCC default value from Table 1.4 ofproject boiler (OT) i for the fuel Chapter 1 of Vol. 2 of “2006 IPCC
type j [tCO2/GJ]

GuidelinesforNationalGHG

Inventories”
EFୖ୉(୓୘)CO2 emission factor of fuel used by IPCC default value at the lower limit in
the reference boiler (OT) [tCO2/GJ]

Table 1.4 of Chapter 1 of Vol. 2 from“2006 IPCC Guidelines for National

In case the project boiler replaces

GHG Inventories”

the existing boiler, or the planned
boiler whose plan is once approved
officially,such as with boiler

installation permit or environmental
impact assessment, CO2 emission
factor of the fuel used by theexisting

orplannedboiler

isapplied.
Otherwise, the value of the fuel use
by the project boiler (OT) i isapplied.
EF୧,୨,୔୎(୉େ)

CO2 emission factor of fuel used by IPCC default value from Table 1.4 ofproject boiler (EC) i for the fuel Chapter 1 of Vol.2 of “2006 IPCC
type j [tCO2/GJ]

Guidelines for National Greenhouse
Gas Inventories”

EF୨,ୖ୉(୉େ)

CO2 emission factor of fuel used by IPCC default value at the lower limit inreference boiler (EC) for the fuel Table 1.4 of Chapter 1 of Vol. 2 fromtype j [tCO2/GJ]“2006 IPCC Guidelines for National
GHG Inventories”

η୧,୔୎(୓୘)

Efficiency of project boiler (OT) i

Specifications of the project boiler or[-]factory test data of the project boiler bythe manufacturerηୖ୉(୓୘)Efficiency of reference boiler (OT) Default value in the methodology[-]
The default value of ηୖ୉ is set as
89% in this methodology.

η୧,୔୎(୉େ)

Efficiency of project boiler (EC) i Specifications,[-]boilerperformance

sheets, or test data of project boiler

8JCM_TH_F_PM_ver01.0(EC) by the boiler manufacturer orsupplierη௜,ୖ୉(୉େ)

Efficiency of reference boiler (EC) i Specifications,[-]boilerperformance

sheet, or test data of reference boiler(EC) by the boiler manufacturer orsupplier.

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