JCM_ID_AM011_ver01.0
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Joint Crediting Mechanism Approved Methodology ID_AM011“Installation of energy saving air jet loom at textile factory”
A. Title of the methodology
Installation of energy saving air jet loom at textile factory, Version 1.0

B. Terms and definitions
Terms

Definitions

Air jet loom

A loom which uses a jet of air to propel the weft yarn throughthe shed

Specific electricity

Amount of electricity to generate one unit of compressed air

consumption of the aircompressors
Specific air consumption ofAmount of compressed air to weave one unit of fabric

the air jet loom

C. Summary of the methodology
Items
GHGemission

measures

Summary
reduction The methodology involves the replacement of existing air jetlooms at textile factory with the ones equipped with energy
saving technology. This reduces compressed air consumption
and leads to reducing electricity consumption by thecompressor, and consequently GHG emission reductions.

Calculation

ofemissions

reference Reference emissions are calculated with amount of fabricproduced in the project, the specific air consumption of theproject air jet loom, reduction rate of air consumption, thespecific electricity consumption of the air compressors and CO2
emission factor for electricity consumed.

Calculationemissions

ofproject Project emissions are calculated with amount of fabric producedin the project, the specific air consumption of the project air jetloom, the specific electricity consumption of the air compressors

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and CO2 emission factor for electricity consumed.
Monitoring parameters

Amount of fabric woven in the project (m/p)

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

The project replaces existing air jet looms at a weaving factory with air jet looms
equipped with energy saving technologies such as an optimized shape reed’stunnel of nozzles and a pressure sensor to measure air pressure of nozzles for
optimization of compressed air consumption of welt insertion

Criterion 2

The air jet looms which are installed by the project reduce the specific air
consumption by at least 15% compared with the reference air jet looms in linewith the description in Section I of this methodology.

E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Electricity consumption by air compressors to generate compressed air CO2
for the reference air jet looms
Project emissions
Emission sources

GHG types

Electricity consumption by air compressors to generate compressed air CO2
for the project air jet looms

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated with the following parameters:
Amount of fabric produced in the project at each project factory [m/p], which is expressedas the amount of fabric produced as per the project air jet loom type which is determinedby, for example, a model of the project air jet loom by the manufacturer during themonitoring period;2

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Specific air consumption as per the project air jet loom type at each project factory[Nm3/m], which is expressed as amount of compressed air to weave one unit of fabric;

Reduction rate of specific air consumption at each project factory [%], which is expressedas the average of reduction rates of specific air consumptions by the project air jet loom tospecific air consumptions by the reference air jet loom as per fabric type;Specific electricity consumption of the air compressors at each project factory [kWh/Nm3],
which is expressed as amount of electricity to generate one unit of compressed air; and

CO2 emission factor for electricity consumed [tCO2/kWh].

Net emission reductions are achieved by setting specific air consumption as per the project air
jet loom type at each project factory at a minimum value in line with the description in Section Iof this methodology.
Specific electricity consumption of the compressor(s) is recalculated in line with Section I
below if any of the existing compressors is replaced with a new one, or the configuration ofcompressors connected to supply compressed air to the project air jet looms is changed at thetime of or after registration of the project.

F.2. Calculation of reference emissions

Where:: Reference emissions during the period p [tCO2/p]: Specific electricity consumption of the air compressors at the project
factory j [kWh/Nm3]: Specific air consumption of the project air jet loom type i at the project
factory j [Nm3/m]: Reduction rate of specific air consumption of the project air jet loom
type i at the project factory j [%]: Amount of fabric woven by the project air jet loom type i at the project
factory j during the period p [m/p]3JCM_ID_AM011_ver01.0
Sectoral scope: 03: CO2 emission factor for consumed electricity at the project factory j[tCO2/kWh]i: Identification number of the project air jet loom type, differentiatedaccording to, for example, modelsj: Identification number of the project factory

G. Calculation of project emissions

Where:: Project emissions during the period p [tCO2/p]: Specific electricity consumption of the air compressors at the project factory j[kWh/Nm3]: Specific air consumption of the project air jet loom type i at the project
factory j [Nm3/m]: Amount of fabric woven at the project air jet loom type i at the project factoryj during the period p [m/p]: CO2 emission factor for consumed electricity at the project factory j[tCO2/kWh]i: Identification number of the project air jet loom type, differentiated according
to, for example, modelsj: Identification number of the project factory

H. Calculation of emissions reductions

Where:4

JCM_ID_AM011_ver01.0
Sectoral scope: 03: 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 data

SourceSpecific electricity consumption of the air

Performance curve of the aircompressors at the project factory jcompressors from their3[kWh/Nm ]manufacturers.

The default value is fixed ex ante for eachproject by the project participant.
SECj is calculated from the linear function ofshaft power [kW] and generated compressed
air [Nm3/h] of the compressors which are used
to supply compressed air to the project air jet
looms at the project factory j, assuming thatthe compressor is operating at the highest
efficiency, determined from the performance
curve of the compressors.
In case that multiple air compressors are usedat the project factory, the most conservativevalue (i.e. the highest efficiency) is selected as
the default value regardless of the capacity or
the model of the compressors.
In case that any of the existing compressors isreplaced with a new compressor, or theconfiguration of compressors connected tosupply compressed air to the project air jet
looms of the project is changed after
registration, SECj for the corresponding5

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factory is recalculated in the same manner
described above.
Specific air consumption of the project air jet
3loom type i at the project factory j [Nm /m]Experimental data from themanufacture of the project air
jet looms

The default value is fixed as the minimumvalue of air consumption by the project air jetloom type, based on the data collected for theall fabric types woven at the project site as per
the factory by experimental data from themanufacture of the project air jet looms (e.g..
consumption of compressed air and amount offabric woven).
In the case that only one fabric type is wovenat the project factory, multiple data (at leasttwo) of the corresponding fabric type arecollected.
In determining the default value, the fabrictype woven at the project factory iscategorized preceding the installation of theproject air jet loom. Fabric type is defined by
the value calculated by weft density multiplied
by fabric width. The choice of fabric type isexplained by, for example, the most recent
fabric production inventory or production planof the factory before the start date of project
operation. The fabric is regarded as the same
type if the variation of the value calculated asindicated above within one category of fabrictype is does not differ by more than plus orminus 5% in the value of fabric type. In caseseveral fabric types are within the 5% range,choose the closest one to the fabric typewoven by the project.
Reduction rate of specific air consumption of6

Based on project and referenceJCM_ID_AM011_ver01.0
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the project air jet loom type i at the project

specific air consumption

factory j [%]collected as per the project

The value is fixed as an average of reduction
rate of specific air consumption for each fabrictype woven as per project air-jet loom type in
the project factory.
Reduction rate of specific air consumption iscalculated for each project as per a project air
jet loom type at the project factory in thefollowing manner:- The reference air jet looms are defined as
one of the following whichever is produced ata later date:1) the previous model of air jet looms
produced by the same manufacture of theproject air jet loom by one generation (e.g. a
substantial model change which leads toreduction of air consumption)2) existing air jet looms in the project factory
Collect dataset of specific air consumption
by reference air jet looms () in a samemanner as to that of the project air jet looms inline with this Section.
- Compare the specific air consumption ofreference air jet looms to that of project air jetlooms as per the fabric type and calculate thereduction rate as following manner:
Calculate reduction rates of specific air
consumption comparing that of the project air
jet loom and the reference air jet loom7

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according to the categories of fabric typeestablished above and average the derived
values.

Reduction

rateofspecificairconsumption of the project air jet loom type iat the project factory j is expressed by thefollowing formula, where i, j and k are suffixes
denoting air jet loom type, factory and fabrictype.

CO2 emission factor for consumed electricity [Grid electricity]
at the project factory j.

The data is sourced from

When the project air compressor consumes “Emission

Factors

only grid electricity or captive electricity, theInterconnection

Electricity

ofproject participant applies the CO2 emission Systems”, National Committee
factor respectively.

on

Clean

Development

When the project compressor may consume Mechanism (Indonesian DNA
both grid electricity and captive electricity, the for CDM), based on data
project participant applies the CO2 emission obtained
factors with lower value.

byDirectorate

General of Electricity, Ministryof[CO2 emission factor]

EnergyandMineralResources, Indonesia, unlessFor grid electricity: The most recent value otherwise instructed by theavailable from the source stated in this table at Joint Committee.
the time of validation[Captive electricity]

For captive electricity: 0.8* [tCO2/MWh]

CDM approved small scale*The most recent value available from CDM

methodology: AMS-I.Aapproved small scale methodology AMS-I.A
at the time of validation is applied.

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History of the document
Version01.0

Date
10 February 2017

Contents revised
JC6, Annex 3
Initial approval.

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