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Joint Crediting Mechanism Approved Methodology TH_AM003“Energy Saving by Introduction of High Efficiency Inverter Type Centrifugal Chiller”
A. Title of the methodology
Energy Saving by Introduction of High Efficiency Inverter Type Centrifugal Chiller, Version
01.0

B. Terms and definitions
Terms

Definitions

Inverter type centrifugal chiller

An inverter type centrifugal chiller is a chiller which contains
inverter, an apparatus to control the speed of the compressor
motor in order to maintain the ambient temperature, andincludes a centrifugal compressor.

Cooling capacity

Cooling capacity is the capability of individual chiller toremove heat. In this methodology, “cooling capacity” is used
to represent a cooling capacity per one chiller unit and not fora system with multiple chiller units.

Periodical check

Periodical check is a periodical investigation of chiller doneby manufacturer or agent who is authorized by themanufacturer, in order to maintain chiller performance.

C. Summary of the methodology
Items
GHG

emissionmeasures

Summary
reduction This methodology applies to the project that aims for savingenergy by introducing high efficiency centrifugal chiller for thetarget factory, commerce facilities etc. in Thailand.

Calculation

ofemissions

reference Reference emissions are GHG emissions from using reference
chiller, calculated with power consumption of project chiller,
ratio of COPs (Coefficient Of Performance) of reference/projectchillers and CO2 emission factor for electricity consumed.

Calculationofproject Project emissions are GHG emissions from using project chiller,1

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emissionscalculated with power consumption of project chiller and CO2
emission factor for electricity consumed.

Monitoring parameterPower consumption of project chiller

The amount of fuel consumed and/or 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

Project chiller is an inverter type centrifugal chiller with a capacity which is lessthan or equals to 1,500 USRt.
* 1 USRt = 3.52 kW

Criterion 2

COP for project chiller i calculated under the standardizing temperature
conditions* (COPPJ,tc,i) is more than the threshold COP values set in the tablebelow. (“x” in the table represents cooling capacity per unit.)
Cooling capacity perunit (USRt)

300≤x<450450≤x<550550≤x<825825≤x≤1,500

Threshold COP value

5.59

5.69

5.85

6.06

COPPJ,tc,i is calculated by altering the temperature conditions of COP of projectchiller i (COPPJ,i) from the project specific conditions to the standardizing
conditions. COPPJ,i is derived from specifications prepared for the quotation or
factory acceptance test data by manufacturer.
[equation to calculate COPPJ,tc,i]۱‫۾۾۽‬۸,‫܋ܜ‬,ܑ = ۱‫۾۾۽‬۸,ܑ × [(‫ܜܝܗି܏ܖܑܔܗܗ܋܂‬,ܑ − ‫ܜܝܗି܌܍ܔܔܑܐ܋܂‬,ܑ + ‫܂‬۲‫ ܌܍ܔܔܑܐ܋‬+ ‫܂‬۲‫) ܏ܖܑܔܗܗ܋‬COP୔୎,୲ୡ,୧
COP୔୎,୧

Tୡ୭୭୪୧୬୥ି୭୳୲,୧
Tୡ୦୧୪୪ୣୢି୭୳୲,୧÷ (૜ૠ − ૠ + ‫܂‬۲‫ ܌܍ܔܔܑܐ܋‬+ ‫܂‬۲‫]) ܏ܖܑܔܗܗ܋‬: COP of project chiller i calculated under the standardizing
temperature conditions* [-]: COP of project chiller i under the project specific conditions[-]: Output cooling water temperature of project chiller i set
under the project specific conditions [degree Celsius]: Output chilled water temperature of project chiller i set
under the project specific conditions [degree Celsius]2

JCM_TH_AM003_ver01.0Sectoral scope: 03TDୡ୭୭୪୧୬୥

: Temperature difference between condensing temperatureof refrigerant and output cooling water temperature
1.5 degree Celsius set as a default value [degree Celsius]

TDୡ୦୧୪୪ୣୢ

: Temperature difference between evaporating temperatureof refrigerant and output chilled water temperature,
1.5 degree Celsius set as a default value [degree Celsius]

Criterion 3*The standardizing temperature conditions to calculate COPPJ,tc,i
Chilled water:
output7 degrees Celsius
input
12 degrees Celsius
Cooling water:
output 37 degrees Celsiusinput
32 degrees Celsius
Periodical check is planned more than one (1) time annually.

Criterion 4

Ozone Depletion Potential (ODP) of the refrigerant used for project chiller iszero.

Criterion 5

A plan for prevention of releasing refrigerant used for project chiller is prepared.
In the case of replacing the existing chiller with the project chiller, a plan forprevention of releasing refrigerant used in the existing chiller to the air (e.g.
re-use of the equipment) is prepared. Execution of this plan is checked at thetime of verification, in order to confirm that refrigerant used for the existing one
replaced by the project is prevented from being released to the air.

E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Power consumption by reference chiller

CO2Project emissions
Emission sources

GHG types

Power consumption by project chiller

CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated by multiplying power consumption of project chiller, ratioof COPs for reference/project chillers, and CO2 emission factor for electricity consumed.
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The COP of reference chiller is conservatively set as a default value in the following manner toensure the net emission reductions.
1. The reference COP value varies by its cooling capacity.
2. The maximum values of COP in each cooling capacity range set for this methodology aredefined as COPRE,i as described in Section I.
F.2. Calculation of reference emissionsRE୮‫܀‬۳‫ = ܘ‬෍൛۳۱‫۾‬۸,ܑ,‫ × ܘ‬൫۱‫۾۾۽‬۸,‫܋ܜ‬,ܑ ÷ ۱‫܀۾۽‬۳,ܑ ൯ × ۳۴‫ ܋܍ܔ܍‬ൟܑ: Reference emissions during the period p [tCO2/p]EC୔୎,୧,୮ : Power consumption of project chiller i during the period p [MWh/p]

COP୔୎,୲ୡ,୧ : COP of project chiller i calculated under the standardizing temperature conditions[-]

COPୖ୉,୧ : COP of reference chiller i under the standardizing temperature conditions [-]EFୣ୪ୣୡ : CO2 emission factor for consumed electricity [tCO2/MWh]

G. Calculation of project emissionsPE୮‫۾‬۳‫ = ܘ‬෍൫۳۱‫۾‬۸,ܑ,‫ × ܘ‬۳۴‫ ܋܍ܔ܍‬൯ܑ: Project emissions during the period p [tCO2/p]EC୔୎,୧,୮ : Power consumption of project chiller i during the period p [MWh/p]EFୣ୪ୣୡ : CO2 emission factor for consumed electricity [tCO2/MWh]

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]4

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I. Data and parameters fixed ex ante
The source of each data and parameter fixed ex ante is listed as below.
ParameterEFୣ୪ୣୡ

Description of data
CO2 emission factor for consumed electricity.

Source[Grid electricity]

When project chiller consumes only grid electricity The most recent value
or captive electricity, the project participant applies available at the time of
the CO2 emission factor respectively.

validation is applied andfixed for the monitoring

When project chiller may consume both grid period

thereafter.

Theelectricity and captive electricity, the project data is sourced fromparticipant applies the CO2 emission factor with “Grid Emission Factor
lower value.

(GEF)

ofendorsed[CO2 emission factor]

Thailand”,

byThailand

GreenhouseGas

For grid electricity: The most recent value available Managementfrom the source stated in this table at the time of Organization
validation

unlessotherwise instructed by
the Joint Committee.

For captive electricity, it is determined based on thefollowing options:[Captive electricity]
For the option a)a) Calculated from its power generation efficiency

Specification(ηelec [%]) obtained from manufacturer’s

captive power generation

specification

system provided by theThe power generation efficiency based on lower

manufacturer (ηelec [%]).

heating value (LHV) of the captive power generation

CO2 emission factor ofsystem from the manufacturer’s specification is

the fossil fuel type usedapplied;in the captive power‫ܨܧ‬௘௟௘௖ = 3.6 ×

100× ‫ܨܧ‬௙௨௘௟η௘௟௘௖

ofthegeneration system (EFfuel[tCO2/GJ])b) Calculated from measured dataFor the option b)

The power generation efficiency calculated from

Generated and suppliedmonitored data of the amount of fuel input for powerelectricity by the captive

generation (‫ܥܨ‬௉௃,௣ ) and the amount of electricity

power generation systemgenerated (‫ܩܧ‬௉௃,௣ ) during the monitoring period p is5(EGPJ,p [MWh/p]).

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applied. The measurement is conducted with theFuel amount consumed

monitoring equipment to which calibrationby the captive power

certificate is issued by an entity accredited undergeneration system (FCPJ,pnational/international standards;[mass or weight/p]).

‫ܨܧ‬௘௟௘௖ = ‫ܥܨ‬௉௃,௣ × ܰ‫ܸܥ‬௙௨௘௟ × ‫ܨܧ‬௙௨௘௟ ×

Where:

1‫ܩܧ‬௉௃,௣

Net

calorificvalue(NCVfuel[GJ/massorweight])

andCO2ܰ‫ܸܥ‬௙௨௘௟ : Net calorific value of consumed fuel emission factor of the[GJ/mass or weight]

fuel (EFfuel [tCO2/GJ]) inorder of preference:

Note:1) values provided by theIn case the captive electricity generation system fuel supplier;meets all of the following conditions, the value in the 2) measurement by thefollowing table may be applied to EFelec depending project participants;on the consumed fuel type.

3) regional or national
default values;•The system is non-renewable generation system•Electricity generation capacity of the system is provided in tables 1.2
less than or equal to 15 MW

4) IPCC default values
and 1.4 of Ch.1 Vol.2 of2006 IPCC Guidelinesfuel type

Diesel fuelNatural gas

EFelec

0.8 *10.46 *2onNationalGHG

Inventories. Lower value
is applied.

*1 The most recent value at the time of validation is[Captive electricity withapplied.

*2 The value is calculated with the equation in the diesel fuel]option a) above. The lower value of default effective CDM

approved

CO2 emission factor for natural gas (0.0543 scale

smallmethodology:

tCO2/GJ), and the most efficient value of default AMS-I.A.
efficiency for off-grid gas turbine systems (42%) are[Captive electricity withapplied.

natural gas]
2006 IPCC Guidelines
onNational

GHG

Inventories for the sourceof EF of natural gas.
CDM
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MethodologicalJCM_TH_AM003_ver01.0
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tool"Determining

baseline

theefficiencyofthermal or electric energy
generation

systemsversion02.0"

fortheefficiency

fordefault

off-grid power plants.
COPୖ୉,୧

The COP of the reference chiller i is selected from The default COP values
the default COP value in the following tables in line are derived from thewith cooling capacity of the project chiller i. (“x” in result of survey on COP
the table represents cooling capacity per unit.)

ofchillers

frommanufacturers that have
Coolingcapacityper unit(USRt)

300≤x<450450≤x<550550≤x<825825≤x≤1,500

COPRE,i

5.59

5.69

5.85

6.06

high market share. The
survey should prove theuseofclear

methodology.

TheCOPRE,i should be revised
if necessary from survey
result which is conductedbyJC

orproject

participants.
COP୔୎,୧

The COP of project chiller i under the project Specifications of project
specific conditions.

chiller i prepared for thequotationor

factory

acceptance test data bymanufacturerTୡ୭୭୪୧୬୥ି୭୳୲,୧Output cooling water temperature of project chiller i Specifications of project
set under the project specific conditions.

chiller i prepared for thequotation

orfactory

acceptance test data by
manufacturerTୡ୦୧୪୪ୣୢି୭୳୲,୧Output chilled water temperature of project chiller i Specifications of project
set under the project specific conditions.

chiller i prepared for thequotation

orfactory

acceptance test data by
manufacturer

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History of the document
Version01.0

Date21 August 2017

Contents revised
JC3, Annex 6
Initial approval.

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