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Joint Crediting Mechanism Approved Methodology TH_AM005“Energy Saving by Introduction of High Efficiency Non-Inverter Type CentrifugalChiller”
A. Title of the methodology
Energy Saving by Introduction of High Efficiency Non-Inverter Type Centrifugal Chiller,
Version 03.0

B. Terms and definitions
Terms

Definitions

Non-inverter

type A non-inverter type centrifugal chiller is a chiller including acentrifugal chiller

centrifugal compressor without inverter. It is commonly used forair-conditioning with huge cooling load, e.g., buildings,
shopping malls or factories etc.

Cooling capacity

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

Periodical check

Periodical check is a periodical investigation of chiller done by
manufacturer or agent who is authorized by the manufacturer, inorder to maintain chiller performance.

COP(CoefficientPerformance)

Of A ratio of the net refrigerating capacity to the total input power
at any given set of rating conditions.
Net refrigerating capacity is the capacity of the evaporator
available for cooling of the thermal load external to the chiller
and it is calculated using only the sensible heat transfer. (AHRIStandard 550/590)

C. Summary of the methodology
Items
GHG

emission

Summaryreduction This methodology applies to the project that aims for saving1

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measuresenergy by introducing high efficiency centrifugal chiller for thetarget factory, commercial facilities etc. in Thailand.

Calculationofreference Reference emissions are GHG emissions from using reference

emissionschiller, calculated with power consumption of project chiller,
ratioofCOPs(CoefficientOfPerformance)

ofreference/project chillers and CO2 emission factor forelectricity consumed.
Calculationofproject Project emissions are GHG emissions from using projectemissionschiller, calculated 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 criteriaThis methodology is applicable to projects that satisfy all of the following criteria.
Criterion 1

Project chiller is a non-inverter type centrifugal chiller with a capacity which isless than or equals to 1,500 USRt.
Note: 1 USRt = 3.52 kW

Criterion 2

COP for project chiller i calculated under the standardizing temperature
conditions*1 (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
per unit [USRt]x≤600

600<x≤800800<x≤1600

Threshold COPvalue5.90

6.00

6.08

COPPJ,tc,i is calculated by altering the temperature conditions of COP of projectchiller i (COPPJ,i) from the project specific conditions to the standardizingconditions. COPPJ,i is derived from specifications prepared for the quotation orfactory acceptance test data by manufacturer.
[equation to calculate COPPJ,tc,i]
𝐂𝐎𝐏𝐏𝐉,𝐭𝐜,𝐢 = 𝐂𝐎𝐏𝐏𝐉,𝐢 × [(𝐓𝐜𝐨𝐨𝐥𝐢𝐧𝐠−𝐨𝐮𝐭,𝐢 − 𝐓𝐜𝐡𝐢𝐥𝐥𝐞𝐝−𝐨𝐮𝐭,𝐢 + 𝐓𝐃𝐜𝐡𝐢𝐥𝐥𝐞𝐝+ 𝐓𝐃𝐜𝐨𝐨𝐥𝐢𝐧𝐠 ) ÷ (𝟑𝟕 − 𝟕 + 𝐓𝐃𝐜𝐡𝐢𝐥𝐥𝐞𝐝 + 𝐓𝐃𝐜𝐨𝐨𝐥𝐢𝐧𝐠 )]2

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COPPJ,tc,i: COP of project chiller i calculated under the standardizing
temperature conditions* [-]: COP of project chiller i under the project specific

COPPJ,iconditions [-]Tcooling−out,i: Output cooling water temperature of project chiller i set
under the project specific conditions [degree Celsius]

Tchilled−out,i: Output chilled water temperature of project chiller i set
under the project specific conditions [degree Celsius]

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

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

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

Criterion 4Ozone Depletion Potential (ODP) of the refrigerant used for project chiller iszero.

Criterion 5

A plan for prevention of releasing refrigerant used for project chiller isprepared. In the case of replacing the existing chiller with the project chiller, aplan for prevention 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
the time 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 types3

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Power consumption by project chiller

CO2F. 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.
The COP of reference chiller is conservatively set as a default value in the following manner
to ensure 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 emissions
𝐑𝐄𝐩 = ∑{𝐄𝐂𝐏𝐉,𝐢,𝐩 × (𝐂𝐎𝐏𝐏𝐉,𝐭𝐜,𝐢 ÷ 𝐂𝐎𝐏𝐑𝐄,𝐢 ) × 𝐄𝐅𝐞𝐥𝐞𝐜 }𝐢REp: Reference emissions during the period p [tCO2/p]

ECPJ,i,p : Power consumption of project chiller i during the period p [MWh/p]
COPPJ,tc,i : COP of project chiller i calculated under the standardizing temperature
conditions [-]COPRE,i : COP of reference chiller i under the standardizing temperature conditions [-]EFelec : CO2 emission factor for consumed electricity [tCO2/MWh]

G. Calculation of project emissions

𝐏𝐄𝐩 = ∑(𝐄𝐂𝐏𝐉,𝐢,𝐩 × 𝐄𝐅𝐞𝐥𝐞𝐜 )𝐢

PEp: Project emissions during the period p [tCO2/p]

ECPJ,i,p : Power consumption of project chiller i during the period p [MWh/p]
EFelec : CO2 emission factor for consumed electricity [tCO2/MWh]

H. Calculation of emissions reductions

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𝐄𝐑 𝐩 = 𝐑𝐄𝐩 − 𝐏𝐄𝐩ER p: Emission 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

Description of dataSource

EFelecCO2 emission factor for consumed electricity.

[Grid electricity]
The most recent value
available at the time ofvalidation is applied andfixed for the monitoring
period thereafter. The data issourced
from“GridEmission Factor (GEF) ofThailand”, endorsed byThailand Greenhouse Gas
Management Organization
unless otherwise instructedby the Joint Committee.

When project chiller consumes only 1) gridelectricity, 2) captive electricity or 3) electricity
directly supplied from small power producer(SPP) to the project site through its internal grid(e.g. industrial park), the project participant
applies the CO2 emission factor respectively.
When project chiller may consume electricity
supplied from more than 1 electric source, theproject participant applies the CO2 emission
factor with the lowest value.

[Captive electricity][CO2 emission factor]
For 1) grid electricity: The most recent value

For the option a)available from the source stated in this table at Specification of the captive
the time of validation
power generation systemprovidedbythemanufacturer (ηelec [%]).
For 2) captive electricity including cogeneration
CO2 emission factor of thesystem, it is determined based on the following fossil fuel type used in thecaptive power generation
options:
system (EFfuel [tCO2/GJ])a) Calculated from its power generation For the option b)
efficiency(ηelec[%])obtainedfrom Generated and supplied
electricity by the captive
manufacturer’s specification
power generation system
The power generation efficiency based on lower

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Parameter

Description of dataSource

heating value (LHV) of the captive power (EGPJ,p [MWh/p]).
Fuel amount consumed bygeneration system from the manufacturer’s
thecaptivepower
specification is applied;generation system (FCPJ,p[mass or volume /p]).
100
EFelec = 3.6 ×× EFfuel
Net calorific value (NCVfuelηelec[GJ/mass or volume]) andCO2 emission factor of theb) Calculated from measured data
fuel (EFfuel [tCO2/GJ]) inThe power generation efficiency calculated from order of preference:
1) values provided by themonitored data of the amount of fuel input forfuel supplier;power generation ( FCPJ,p ) and the amount of 2) measurement by theelectricity generated ( EGPJ,p ) during the project participants;monitoring period p is applied. The measurement 3) regional or national
default values;
is conducted with the monitoring equipment to4) IPCC default values
which calibration certificate is issued by an provided in tables 1.2 andentity accredited under national/international 1.4 of Ch.1 Vol.2 of 2006
IPCC
Guidelines
onstandards;
National GHG Inventories.
1Lower value is applied.
EFelec = FCPJ,p × NCVfuel × EFfuel ×
EGPJ,pWhere:
NCVfuel : Net calorific value of consumed fuel[GJ/mass or volume]

diesel fuel]CDM approved small scaleNote:
In case the captive electricity generation systemmeets all of the following conditions, the value
in the following table may be applied to EFelec
depending on the consumed fuel type.
⚫

The system is non-renewable generation
system⚫

[Captive electricity withElectricity generation capacity of thesystem is less than or equal to 15 MW

methodology: AMS-I.A.
[Captive electricity withnatural gas]
2006 IPCC Guidelines on
National GHG Inventories
for the source of EF ofnatural gas.
CDM Methodological tool
"Determining the baseline
efficiency of thermal orfuel type

Dieselfuel

Natural gas

electric energy generation

EFelec

0.8 *10.46 *2

systems version02.0" for6

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Parameter

Description of dataSource
the default efficiency for*1 The most recent value at the time ofoff-grid power plants.

validation is applied.
*2 The value is calculated with the equation inthe option a) above. The lower value of default
effective CO2 emission factor for natural gas(0.0543tCO2/GJ), and the most efficient value ofdefault efficiency for off-grid gas turbine
systems (42%) are applied.
For 3) electricity directly supplied from small
power producer (SPP) , it is determined basedon the following options:a) The value provided by the SPP with theevidence;b) The value calculated in the same manner forthe option a) of 2) captive electricity asinstructed above;c) The value calculated in the same manner forthe option b) of 2) captive electricity as
instructed above;
When project chiller may consume electricity
supplied from more than 1 SPP, the project[Electricitydirectlysupplied from SPP]For option a) the evidence
stating information relevantto the value of emission
factor e.g. data of power
generation, type of power
plant, type of fossil fuel,period of time.

participant applies the CO2 emission factor withthe lowest value.
COPRE,iThe COP of the reference chiller i is selected The default COP values arederived from the result offrom the default COP value in the following table
survey on COP of chillers
in line with cooling capacity of the project chiller from manufacturers thati. (“x” in the table represents cooling capacity per have high market share. The
survey should prove the useunit.)of clear methodology. TheCOPRE,i should be revised ifCooling
600<x≤8 800<x≤16capacity
necessary from surveyx≤600/unit
0000
result which is conducted by(USRt)
JC or project participants.
COPRE,i5.90

COPPJ,i6.00

6.08

The COP of project chiller i under the project Specifications of projectchiller i prepared for the7

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Parameter

Description of data

Sourcespecific conditions.

Tcooling−out,iOutput cooling water temperature of projectchiller i set under the project specific conditions.

Tchilled−out,iOutput chilled water temperature of projectchiller i set under the project specific conditions.

quotationorfactory
acceptance test data bymanufacturer
Specifications of projectchiller i prepared for thequotation
orfactory
acceptance test data bymanufacturer
Specifications of projectchiller i prepared for thequotation
orfactory
acceptance test data by
manufacturer

History of the document
Version
03.0

Date
11 October 2023

02.0

14 January 201901.0

21 August 2017

Contents revised
JC5Revision to:⚫ Update the threshold COP values in Criterion 2 and thedefault COP value due to the improved efficiency ofchillers currently available in the local market since its
initial approval of the methodology⚫ Add the definition of "COP (Coefficient OfPerformance)"
Electronic decision by the Joint Committee
Revision to:⚫ Add option to identify CO2 emission factor for consumed
electricity by changing the description of CO2 emission
factor for consumed electricity directly supplied fromsmall power producer (SPP)⚫ Change the description of "Measurement methods andprocedures", "Source of data", "Description of data" and"Units" in the monitoring spreadsheet
JC3, Annex 7
Initial approval.

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