JCM_TH_AM005_ver032.0
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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 023.0

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,
ratio of COPs (Coefficient Of Performance) of reference/projectchillers and CO2 emission factor for electricity consumed.

Calculation

ofproject Project emissions are GHG emissions from using project chiller,

emissionscalculated with power consumption of project chiller and CO2emission 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 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.)
Coolingcapacity
per unit[USRt]x≤600300≤x<500

600<x≤800500≤x<800800<x≤1600800≤x≤1500

Threshold
COP value

5.90676.005.81

6.085

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 or
factory 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* [-]COPPJ,i: COP of project chiller i under the project specific conditions[-]

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 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

CO2

Project 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, ratio ofCOPs 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 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 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 − 𝐏𝐄𝐩
ER 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 data

SourceEFelecCO2 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
is sourced 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
available from the source stated in this table atthe time of validation
For 2) captive electricity including cogeneration
system, it is determined based on the following
options:a) Calculated from its power generation
efficiency(ηelec[%])obtained

For the option a)Specification of the captive
power generation systemprovidedbythemanufacturer (ηelec [%]).
CO2 emission factor of thefossil fuel type used inthecaptivepower
generation system (EFfuel[tCO2/GJ])

from For the option b)
Generated and supplied
manufacturer’s specificationelectricity by the captive
The power generation efficiency based on lower

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Parameter

Description of data

Sourceheating value (LHV) of the captive power power generation system(EGPJ,p [MWh/p]).
generation system from the manufacturer’s
Fuel amount consumed by
specification is applied;thecaptivepower
generation system (FCPJ,p100
EFelec = 3.6 ×× EFfuel[mass or volume /p]).
ηelec
Net calorific value (NCVfuel[GJ/mass or volume]) andb) Calculated from measured data
CO2 emission factor of theThe power generation efficiency calculated fuel (EFfuel [tCO2/GJ]) inorder of preference:from monitored data of the amount of fuel input
1) values provided by thefor power generation (FCPJ,p) and the amount of fuel supplier;electricity generated ( EGPJ,p ) during the 2) measurement by themonitoring period p is applied. The project participants;
3) regional or national
measurement is conducted with the monitoring
default values;
equipment to which calibration certificate is 4) IPCC default values
issued by an entity accredited under provided in tables 1.2 and1.4 of Ch.1 Vol.2 of 2006
national/international standards;
IPCC
Guidelineson1
National GHG Inventories.
EFelec = FCPJ,p × NCVfuel × EFfuel ×
EGPJ,pLower value is applied.
Where:
NCVfuel : Net calorific value of consumed fuel[GJ/mass or volume][Captive electricity withdiesel fuel]Note:

CDM approved small scale

In case the captive electricity generation system

methodology: AMS-I.A.

meets all of the following conditions, the value
in the following table may be applied to EFelec[Captive electricity withdepending on the consumed fuel type.

natural gas]
2006 IPCC Guidelines on⚫
⚫

The system is non-renewable generation

National GHG Inventories

systemfor the source of EF of

Electricity generation capacity of thenatural gas.

system is less than or equal to 15 MW

CDM Methodological tool
"Determining the baseline

fuel type

Dieselfuel

Natural gas

EFelec

0.8 *10.46 *2

6efficiency of thermal orelectric energy generation
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Parameter

Description of data

Sourcethe 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 valueof default 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 as[Electricitydirectlysupplied from SPP]

instructed 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

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,i

COPPJ,iThe COP of the reference chiller i is selected The default COP values arederived from the result of
from the default COP value in the following
survey on COP of chillers
table in line with cooling capacity of the project from manufacturers thatchiller i. (“x” in the table represents cooling have high market share.
The survey should prove
capacity per unit.)
theuseofclear
methodology.
TheCOPRE,i
Cooling
600<x≤8 800<x≤16x≤60030capacity
should be revised if
00500≤x00800≤x≤/unit
0≤x<500<8001500
necessary from survey(USRt)
result which is conducted
COPRE,i5.9067
6.005.81
6.085
byJCorproject
participants.
The COP of project chiller i under the project Specifications of project7

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Parameter

Description of data

Sourcespecific conditions.

Tcooling−out,iOutput cooling water temperature of projectchilleriset

under theproject

specificconditions.
Tchilled−out,iOutput chilled water temperature of projectchilleriset

under theproject

conditions.

specific

chiller i prepared for thequotation
orfactory
acceptance test data by
manufacturer
Specifications of projectchiller i prepared for thequotation
orfactory
acceptance test data by
manufacturer
Specifications of projectchiller i prepared for thequotationorfactory
acceptance test data by
manufacturer

History of the document
Version03.0

Date

Contents revised

TBD

TBD

02.0

14 January 2019

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 from small power
producer (SPP)• Change the description of "Measurement methods andprocedures", "Source of data", "Description of data" and01.0

21 August 2017

"Units" in the monitoring spreadsheet
JC3, Annex 7
Initial approval.

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