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 Sony Semiconductor Manufacturing Corporation
submitting this form
Sectoral scope(s) to which the Proposed 3. Energy demand, 4. Manufacturing industries
Methodology applies
Title of the proposed methodology, and Installation of Displacement Ventilation Air
version number

Conditioning

UnitintheCleanroomofSemiconductor Manufacturing Factory, Version01.0
List of documents to be attached to this form

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

Additional information

Date of completion

01/08/2017

History of the proposed methodology
Version01.0

DateContents revised

01/08/2017

First edition as a proposed methodology1

JCM_TH_F_PM_ver01.0

A. Title of the methodology
Installation of Displacement Ventilation Air Conditioning Unit in the Cleanroom ofSemiconductor Manufacturing Factory, Version 01.0

B. Terms and definitions
Terms
Displacement ventilation

Definitions
Air distribution technology that introduces conditioned air
into a zone at a low velocity (less than 1.0 m/s) via diffusers
located either at near floor level or middle space of a roomand spreads the supply air over the floor to displace thewarmer air from the occupied zone toward the ceiling forventilation.

Displacement ventilation air
conditioning unit

A supplying unit of conditioned air with application ofdisplacement ventilation technology. The unit doesn’t include
outdoor-air processing units.

Mixing ventilation

A traditional air distribution technology that uses turbulent orlaminar flow of fresh air supplied from the ceiling level sothat mix and dilute any existing warmer air with suppliedclean and conditioned air.

Mixing ventilation air
conditioning unit

A supplying unit of conditioned air with application of
mixing ventilation technology.

Airborne particulate cleanliness

The level of cleanliness specified by the maximum allowable

class

number of particles per cubic meter of air (per cubic foot ofair).

Outdoor-air processing unit

The unit for processing the outdoor fresh air that is taken infor ventilation and/or for keeping the pressure inside a clean
room a predetermined positive value. The unit also
constituted of air filters and heating or cooling coils so thatthe outside air is brought to a required state of temperature,humidity, and cleanliness before letting the outside air in.

C. Summary of the methodology2

JCM_TH_F_PM_ver01.0

Items
GHGemission

Summary
reduction Installation of displacement ventilation air conditioning unit tomeasures

improve energy efficiency of supplying conditioned air to thecleanroom of semiconductor plant leads to reduction of power
consumption for ventilation.

Calculation

ofreference Reference emissions are calculated by multiplying power

emissionsconsumption of mixing ventilation air conditioning unit, theproportion of motive power of reference mixing ventilation airconditioning unit and project displacement ventilation airconditioning unit, and CO2 emission factor for electricityconsumed.

Calculationofproject Project emissions are calculated by multiplying total power

emissionsconsumption of displacement ventilation air conditioning unit
and CO2 emission factor for electricity consumed.

Monitoring parameters

The amount of power consumption by project displacement
ventilation air conditioning unitThe amount of fuel consumption and the amount ofelectricity generated by captive power, where applicable

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

Displacement ventilation air conditioning unit, whose specification of velocity ofthe discharged air is designed to be more than 0.5 m/s and equals to or less than
1.0 m/s, is installed in the cleanroom of semiconductor plant.

Criterion 2

The project displacement ventilation air conditioning unit is constituted of atleast cooling coil, HEPA (high efficiency particular air) or ULPA (ultra lowpenetration air) filter and air supply fan in one unit.

Criterion 3

The project displacement ventilation air conditioning unit is designed to meet thethreshold values of Class 6 or class 7 of airborne particulate cleanliness class set
by ISO 14644-1:20151.

Criterion 4

The project displacement ventilation air conditioning unit only supplies cooledair.

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Cleanrooms and associated controlled environments -- Part 1: Classification of air cleanlinessby particle concentration3

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E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Power consumption by mixing ventilation air conditioning unit

CO2

Power consumption by reference outdoor-air processing unit (excluded CO2
from calculation of reference emissions)Power consumption by reference chiller (excluded from calculation of CO2
reference emissions)Power consumption by reference exhaust fan (excluded from calculation CO2of reference emissions)
Project emissions
Emission sources

GHG types

Power consumption by displacement ventilation air conditioning unit

CO2

Power consumption by project outdoor-air processing unit (excluded CO2
from calculation of project emissions)Power consumption by project chiller (excluded from calculation of CO2
project emissions)Power consumption by project exhaust fan (excluded from calculation CO2of project emissions)

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are consisted of emissions from mixing ventilation air conditioning unit,
outdoor-air processing unit and chillers supplying chilled water to cooling coil.
The temperature of outlet chilled water of the chiller is set higher (e.g. 14 degrees Celsius) withdisplacement ventilation air conditioning unit compared to that with mixing ventilation airconditioning unit (e.g. 7 degrees Celsius). It is because displacement ventilation airconditioning unit diffuses conditioned air at floor level or middle space of a room while mixing
ventilation air conditioning unit does from air supply ports located on the ceiling. Therefore, theheat load handled by the chillers in the case of displacement ventilation gets lower, and it leads
to reduction of power consumption by the chillers.
In this methodology, GHG emissions reductions of chillers caused by the difference of heat load
are not included in the calculation of total GHG emission reductions to ensure the net emission

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JCM_TH_F_PM_ver01.0

reductions.

F.2. Calculation of reference emissionsܴ‫ܧ‬௣ = ෍ ෍ ෍ ቆ‫ܥܧ‬௉௃,஽௏,௜,௝,௞,௣ ×௜

with௝௞

‫ܮ‬ோா,௝,௞ =‫ܮ‬௉௃,௝,௞ =‫ܮ‬ோா,௝,௞
× ‫ܨܧ‬௘௟௘௖,௞ ቇ‫ܮ‬௉௃,௝,௞

ܲௗ,ோா,௝,௞ × ‫ܴܨܣ‬ோா,௝,௞
1,000 × ߟோா,௝,௞
ܲௗ,௉௃,௝,௞ × ‫ܴܨܣ‬௉௃,௝,௞
1,000 × ߟ௉௃,௝,௞‫ܴܨܣ‬ோா,௝,௞ =ܸ௖௥,௝,௞ × ܶ௩௘௡௧,௝,௞
3,600‫ܴܨܣ‬௉௃,௝,௞ = ෍ ‫ܴܨܣ‬௉௃,௜,௝,௞௜ߟோா,௝,௞ = ߟ௉௃,௝,௞

* Since the fans with similar type and specification are installed both in displacementventilation air conditioning unit and mixing ventilation air conditioning unit, energy efficiencyof the fans are considered to be equal.
Thereforeܴ‫ܧ‬௣ = ෍ ෍ ෍ ቆ‫ܥܧ‬௉௃,஽௏,௜,௝,௞,௣ ×௜௝௞‫ܮ‬ோா,௝,௞
× ‫ܨܧ‬௘௟௘௖,௞ ቇ‫ܮ‬௉௃,௝,௞= ෍ ෍ ෍ ቆ‫ܥܧ‬௉௃,஽௏,௜,௝,௞,௣ ×௜௝௞ܲௗ,ோா,௝,௞ × ‫ܴܨܣ‬ோா,௝,௞
× ‫ܨܧ‬௘௟௘௖,௞ ቇܲௗ,௉௃,௝,௞ × ‫ܴܨܣ‬௉௃,௝,௞

Whereܴ‫ܧ‬௣‫ܥܧ‬௉௃,஽௏,௜,௝,௞,௣

Reference emissions during the period p [tCO2/p]
The amount of power consumption by the project displacement ventilation airconditioning unit i in cleanroom j of the project factory k during the period p[MWh/p]‫ܮ‬ோா,௝,௞‫ܮ‬௉௃,௝,௞

Motive power of reference mixing ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [kW]Motive power of project displacement ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [kW]5

JCM_TH_F_PM_ver01.0‫ܨܧ‬௘௟௘௖,௞

ܲௗ,ோா,௝,௞

ܲௗ,௉௃,௝,௞‫ܴܨܣ‬ோா,௝,௞‫ܴܨܣ‬௉௃,௝,௞

ߟோா,௝,௞
ߟ௉௃,௝,௞
ܸ௖௥,௝,௞

ܶ௩௘௡௧,௝,௞

CO2 emission factor for consumed electricity in the project factory k[tCO2/MWh]
Discharge pressure of reference mixing ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [Pa]
Discharge pressure of project displacement ventilation air conditioningunit(s) supplying air to cleanroom j in the project factory k [Pa]Airflow rate of reference mixing ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [m3/s]
Airflow rate of project displacement ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [m3/s]
Fan efficiency of reference mixing ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [-]Fan efficiency of project displacement ventilation air conditioning unit(s)supplying air to cleanroom j in the project factory k [-]Volume of the cleanroom j in the project factory k [m3]
Number of times of ventilation required for the cleanroom j in the project
factory k [times/h]‫ܴܨܣ‬௉௃,௜,௝,௞

Airflow rate of project displacement ventilation air conditioning unit ii

Identification number of the displacement ventilation air conditioning unitjIdentification number of the cleanroomkIdentification number of the factory

supplying air to cleanroom j in the project factory k [m3/s]

Emissions from power consumption by reference outdoor-air processing unit(s) and project
outdoor-air processing unit(s) are considered to be equal. Emissions from power consumption
by reference exhaust fan(s) and project exhaust fan(s) are also considered to be equal.
Therefore, both of them are not included in calculation of reference emissions and projectemissions.
Emissions from power consumption by reference chiller(s) are not included in calculation ofreference emissions as explained in F.1 of this methodology.

G. Calculation of project emissions

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JCM_TH_F_PM_ver01.0ܲ‫ܧ‬௣ = ෍ ෍ ෍൫‫ܥܧ‬௉௃,஽௏,௜,௝,௞,௣ × ‫ܨܧ‬௘௟௘௖,௞ ൯௜

Whereܲ‫ܧ‬௣௝௞

Project emissions during the period p [tCO2/p]‫ܥܧ‬௉௃,஽௏,௜,௝,௞,௣

The amount of power consumption by the displacement ventilation air
conditioning unit i in cleanroom j of the project factory k during the period p[MWh/p]‫ܨܧ‬௘௟௘௖,௞

CO2 emission factor for consumed electricity in the project factory k[tCO2/MWh]i

Identification number of the displacement ventilation air conditioning unitjIdentification number of the cleanroomkIdentification number of the factory

Emissions from power consumption by reference outdoor-air processing unit(s) and project
outdoor-air processing unit(s) are considered to be equal. Emissions from power consumption
by reference exhaust fan(s) and project exhaust fan(s) are also considered to be equal.
Therefore, both of them are not included in calculation of reference emissions and projectemissions.
Emissions from power consumption by project chiller(s) are not included in calculation ofproject emissions as explained in F.1 of this methodology.

H. Calculation of emissions reductions

Where‫ܴܧ‬௣ܴ‫ܧ‬௣ܲ‫ܧ‬௣‫ܴܧ‬௣ = ܴ‫ܧ‬௣ − ܲ‫ܧ‬௣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.
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Parameter

Description of data‫ܴܨܣ‬ோா,௝,௞

Airflow rate of reference mixing ventilation

SourceCalculated

air conditioning unit(s) supplying air tocleanroom j in the project factory k
Calculated with the following equation:‫ܴܨܣ‬௉௃,௝,௞‫ܴܨܣ‬ோா,௝,௞ =ܸ௖௥,௝,௞ × ܶ௩௘௡௧,௝,௞
3,600

Airflow rate of project displacement

Design document orventilation air conditioning unit(s) supplying

specification document of the

air to cleanroom j in the project factory kdisplacement ventilation airconditioning unit.

One value is determined ex ante for eachproject cleanroom. Where outdoor-air
processing units are supplying air to one
cleanroom, the total value is applied.
ܲௗ,ோா,௝,௞

Discharge pressure of reference mixing

Hearing survey withventilation air conditioning unit(s) supplying

manufacturer of mixing

air to cleanroom j in the project factory k [Pa]ventilation air conditioningunit.

The default value of [1,200] is applied.
ܲௗ,௉௃,௝,௞

Discharge pressure of project displacement

Design document orventilation air conditioning unit(s) supplying

specification document of the

air to cleanroom j in the project factory kdisplacement ventilation airconditioning unit.

One value is determined ex ante for eachproject cleanroom.
ܸ௖௥,௝,௞

Volume of the cleanroom j in the project

Design document of thefactory kcleanroom.

The value is determined by the actual volumeof the cleanroom where the project inimplemented.
ܶ௩௘௡௧,௝,௞

Number of times of ventilation required for

Published documents on thethe cleanroom j in the project factory kweb.

The default value from the following table is8

JCM_TH_F_PM_ver01.0

applied corresponding to the airborne
particulate cleanliness class required for thecleanroom j.
cleanliness class‫ܨܧ‬௘௟௘௖,௞

ISO

FED-14644-1:2015

STD-209E

ܶ௩௘௡௧,௝,௞

Class 61,000

80Class 710,00040

CO2 emission factor for consumed electricity.

[Grid electricity]

When project chiller consumes only grid The most recent value available
electricity or captive electricity, the project at the time of validation isparticipant applies the CO2 emission factor applied and fixed for therespectively.

monitoring period thereafter.
The data is sourced from “GridWhen project chiller may consume both grid Emission

Factor(GEF)

ofelectricity and captive electricity, the project Thailand”,endorsedbyparticipant applies the CO2 emission factor ThailandGreenhouseGaswith lower value.

ManagementOrganization

unless otherwise instructed by[CO2 emission factor]

the Joint Committee.

For grid electricity: The most recent value
available from the source stated in this table at [Captive electricity]
the time of validation

For the option a)Specification of the captive

For captive electricity, it is determined based

power

generation

systemon the following options:provided by the manufacturer(ηelec [%]).

a) Calculated from its power generation

CO2 emission factor of theefficiency (ηelec [%]) obtained fromfossil fuel type used in themanufacturer’s specificationcaptive

The power generation efficiency based onsystem (EFfuel [tCO2/GJ])

powergeneration

lower heating value (LHV) of the captive
power generation system from theFor the option b)

manufacturer’s specification is applied;

Generated

9andsupplied

JCM_TH_F_PM_ver01.0‫ܨܧ‬௘௟௘௖ = 3.6 ×100× ‫ܨܧ‬௙௨௘௟ߟ௘௟௘௖

electricity by the captive powergenerationsystem(EGPJ,p[MWh/p]).

b) Calculated from measured data

Fuel amount consumed by theThe power generation efficiency calculated

captivepowergenerationfrom monitored data of the amount of fuelsystem(FCPJ,p[massinput for power generation (‫ܥܨ‬௉௃,௣ ) and theweight/p]).

oramount of electricity generated (‫ܩܧ‬௉௃,௣ )Net calorific value (NCVfuelduring the monitoring period p is applied. The[GJ/mass or weight]) and CO2

measurement is conducted with the monitoring

emission factor of the fuelequipment to which calibration certificate is(EFfuel [tCO2/GJ]) in order ofissued by an entity accredited under

preference:national/international standards;

1) values provided by the fuel‫ܨܧ‬௘௟௘௖ = ‫ܥܨ‬௉௃,௣ × ܰ‫ܸܥ‬௙௨௘௟ × ‫ܨܧ‬௙௨௘௟ ×Where:1‫ܩܧ‬௉௃,௣

supplier;2) measurement by the project
participants;ܰ‫ܸܥ‬௙௨௘௟ : Net calorific value of consumed 3) regional or national default

fuel [GJ/mass or weight]

values;4)IPCC

default

valuesNote:provided in table 1.4 of Ch.1

In case the captive electricity generation

Vol.2 of 2006 IPCC Guidelines

system meets all of the following conditions,on National GHG Inventories.

the value in the following table may be

Lower value is applied.

applied to ‫ܨܧ‬௘௟௘௖ depending on the consumed[Captive electricity with diesel

・ The system is non-renewable generation

CDM approved small scale

fuel type.

fuel]
methodology: AMS-I.A.

system・ Electricity generation capacity of thesystem is less than or equal to 15 MW[Captive electricity with naturalgas]

fuel type‫ܨܧ‬௘௟௘௖

Dieselfuel

Natural gas

0.8 *10.46 *2

2006 IPCC Guidelines on
National GHG Inventories forthe source of EF of natural gas.
CDM Methodological tool

*1 The most recent value at the time of"Determining the baseline

validation is applied.

efficiency of thermal or electric10

JCM_TH_F_PM_ver01.0*2 The value is calculated with the equation inenergy generation systems

the option a) above. The lower value of default

version02.0" for the default

effective CO2 emission factor for natural gas

efficiency for off-grid power(0.0543tCO2/GJ), and the most efficient value

plants.

of default efficiency for off-grid gas turbine
systems (42%) are applied.

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