JCM_KH_AM003_ver01.0
Sectoral scope: 03
Joint Crediting Mechanism Approved Methodology KH_AM003“Introduction of High Efficiency Centrifugal Chiller”

A. Title of the methodology
Introduction of High Efficiency Centrifugal Chiller, Ver01.0

B. Terms and definitions
Terms
Centrifugal chiller

Definitions
A centrifugal chiller is a chiller applying a centrifugal
compressor. It is commonly used for air-conditioning with hugecooling load, e.g., buildings, shopping malls or factories etc.

Cooling capacity

Cooling capacity is the ability 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.

C. Summary of the methodology
Items
GHG

emissionmeasuresCalculation

Summary
reduction High efficiency centrifugal chiller is introduced to save energy,
which leads to GHG emission reductions.

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.

Calculation
emissionsofproject Project emissions are GHG emissions from using project chiller,
calculated with power consumption of project chiller and CO2
emission factor for electricity consumed.

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Monitoring parametersPower consumption of project chiller



Amount of fuel consumed and amount of electricity
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 centrifugal chiller with a capacity of less than or equal to1,300 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 tables
below. (“x” in the table represents cooling capacity per unit.)[Threshold COP values for project chiller]
Cooling capacity perunit (USRt)

300£x£350

350<x£550

550<x£750

750<x£1,300

Threshold COP value

5.46

5.76

5.90

6.03

COPPJ,tc,i is a recalculation of COP of project chiller i (COPPJ,i) adjusting
temperature conditions from the project specific conditions to the standardizingconditions. COPPJ,i is derived from specifications prepared for the quotation orfactory acceptance test data at the time of shipment by manufacturer.
[equation to calculate COPPJ,tc,i]۱‫۾۾۽‬۸,‫܋ܜ‬,ܑ = ۱‫۾۾۽‬۸,ܑ × [(‫ܜܝܗି܏ܖܑܔܗܗ܋܂‬,ܑ − ‫ܜܝܗି܌܍ܔܔܑܐ܋܂‬,ܑ + ‫܂‬۲‫ ܌܍ܔܔܑܐ܋‬+ ‫܂‬۲‫) ܏ܖܑܔܗܗ܋‬COP୔୎,୲ୡ,୧COP୔୎,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 condition [degree Celsius]: Output chilled water temperature of project chiller i set
under the project specific condition [degree Celsius]2

JCM_KH_AM003_ver01.0
Sectoral scope: 03TDୡ୭୭୪୧୬୥

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

TDୡ୦୧୪୪ୣୢ: Temperature difference between evaporating temperature ofrefrigerant and output chilled water temperature, 1.5 degrees
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 Celsius
input
32 degrees Celsius
Periodical check is planned more than 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 emissionsEmission 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 COP value tends to increase as the cooling capacity becomes larger.

2.

The reference COP, which has a certain cooling capacity, is set at a maximum value incorresponding cooling capacity range.

3.

The maximum values of COP in each cooling capacity ranges are defined as COPRE,i asdescribed in Section I.

F.2. Calculation of reference emissions

RE୮EC୔୎,୧,୮

COP୔୎,୲ୡ,୧
COPୖ୉,୧
EFୣ୪ୣୡ‫܀‬۳‫ = ܘ‬෍൛۳۱‫۾‬۸,ܑ,‫ × ܘ‬൫۱‫۾۾۽‬۸,‫܋ܜ‬,ܑ ÷ ۱‫܀۾۽‬۳,ܑ ൯ × ۳۴‫ ܋܍ܔ܍‬ൟܑ: Reference emissions during the period p [tCO2/p]: Power consumption of project chiller i during the period p [MWh/p]: COP of project chiller i calculated under the standardizing temperatureconditions [-]: COP of reference chiller i under the standardizing temperature conditions [-]: CO2 emission factor for consumed electricity [tCO2/MWh]

G. Calculation of project emissionsPE୮EC୔୎,୧,୮
EFୣ୪ୣୡ

‫۾‬۳‫ = ܘ‬෍൫۳۱‫۾‬۸,ܑ,‫ × ܘ‬۳۴‫ ܋܍ܔ܍‬൯ܑ: Project emissions during the period p [tCO2/p]: Power consumption of project chiller i during the period p [MWh/p]: CO2 emission factor for consumed electricity [tCO2/MWh]

H. Calculation of emissions reductions۳‫܀ = ܘ ܀‬۳‫ ܘ‬− ‫۾‬۳‫ܘ‬4

JCM_KH_AM003_ver01.0
Sectoral scope: 03ER ୮RE୮PE୮

: 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 dataSourceEFୣ୪ୣୡCO2 emission factor for consumed electricity.

[Grid electricity]
The most recent published value

When project chiller consumes only grid by the Ministry of Environment
electricity or captive electricity, the project of Cambodia at the time ofparticipant applies the CO2 emission factor validation.
respectively.
[Captive electricity]
When project chiller may consume both grid For the option (a)and captive electricity, the project participant Specification
applies the CO2 emission factor with lower power
value.

of the captive

generation

systemprovided by the manufacturer(ηelec,CG [%]).

In case the captive electricity is generated by CO2 emission factor of the fossil
renewable energy source(s) and the amount of fuel type used in the captive
the captive electricity generated by the power
renewablesource(s)estimatedfromgeneration

systemits (EFfuel,CG [tCO2/GJ])

generation capacities is equal to or less thanhalf of the total electricity consumption at the For the option (b)project site, the portion of electricity generated Generated

andsuppliedby the renewable source(s) may be neglected in electricity by the captive power
the calculation of the captive CO2 emission generationsystem(EGPJ,CG,pfactor. If the amount of captive electricity [MWh/p]).
generated by renewable source(s) is more than Fuel amount consumed by thehalf, the captive CO2 emission factor is captive power generation systemdetermined by the following option (b) of “(2) (FCPJ,CG,p [mass or volume/p]).
For captive electricity” using the total amount Net calorific value (NCVfuel,CGof captive electricity generated by both fossil [GJ/mass or volume]) and CO2
fuel and renewable sources for EGPJ,CG,p.

emissionfactor(EFfuel,CG[tCO2/GJ]) of the fuel consumed
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JCM_KH_AM003_ver01.0
Sectoral scope: 03[CO2 emission factor]

by the captive power generation(1) For grid electricity

system in order of preference:

The most recent value available from the 1) values provided by the fuelsource stated in this table at the time of supplier;
validation is applied.

2) measurement by the project
participants;(2) For captive electricity3) regional or national default

Option (a) Calculated from its powervalues;

generation efficiency (ηelec,CG [%]) obtained

4) IPCC default values provided

from manufacturer’s specificationin tables 1.2 and 1.4 of Ch.1

The power generation efficiency based on

Vol.2 of 2006 IPCC Guidelines

lower heating value (LHV) of the captive

on National GHG Inventories.

power generation system from theLower value is applied.

manufacturer’s specification is applied;
EFୣ୪ୣୡ = 3.6 ×100

ηୣ୪ୣୡ,େୋ

× EF୤୳ୣ୪,େୋ

Option (b) Calculated from measured data

[Captive electricity with dieselfuel]CDM approved small scale
methodology: AMS-I.A.

The power generation efficiency calculated
from monitored data of the amount of fuel[Captive electricity with natural

input for power generation (FCPJ,CG,p) and thegas]

amount of electricity generated (EGPJ,CG,p)2006 IPCC Guidelines onduring the monitoring period p is applied.

National GHG Inventories for

The measurement is conducted with thethe source of EF of natural gas.

monitoring equipment to which calibration

CDM

certificate is issued by an entity accredited"Determining

under national/international standards;

efficiency of thermal or electricEFୣ୪ୣୡ = FC୔୎,େୋ,୮ × NCV୤୳ୣ୪,େୋ × EF୤୳ୣ୪,େୋWhere:×1EG୔୎,େୋ,୮

energyMethodologicalthegeneration

tool

baselinesystemsversion02.0" for the default
efficiency for off-grid power
plants.

NCVfuel,CG: Net calorific value of fuelconsumed by the captive power generation
system [GJ/mass or volume]Note:
In case the captive electricity generation
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system meets 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Electricity generation capacity of thesystem is less than or equal to 15 MW

fuel typeEFୣ୪ୣୡ

Dieselfuel

Natural gas

0.8 *10.46*2*1 The most recent value at the time ofvalidation is applied.
*2 The value is calculated with the equation inthe option (a) above. The lower value ofdefault effective CO2 emission factor fornatural gas (0.0543 tCO2/GJ), and the mostefficient value of default efficiency for off-gridgas turbine systems (42%) are applied.
COPୖ୉,୧

The COP of the reference chiller i is selected Specifications of project chiller ifrom the default COP values in the following prepared for the quotation ortable in line with cooling capacity of the factory acceptance test data bymanufacturer.

project chiller i.
Coolingcapacity/unit(USRt)

300£x
£350

350<x
£550

550<x
£750

750<x
£1,300

COPRE,i

5.46

5.76

5.90

6.03

The

default

COP valueisderived from the result of survey
on

COPofchillers

frommanufacturers that has highmarket share. The survey should
prove

themethodology.

use
Theofclear
COPRE,ishould be revised if necessary
from survey result which isconducted by JC or project7

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participants.
COP୔୎,୧

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

prepared for the quotation orfactory acceptance test data by
manufacturerTୡ୭୭୪୧୬୥ି୭୳୲,୧Output cooling water temperature of project Specifications of project chiller ichiller i set under the project specific condition. prepared for the quotation or
factory acceptance test data by
manufacturerTୡ୦୧୪୪ୣୢି୭୳୲,୧Output chilled water temperature of project Specifications of project chiller ichiller i set under the project specific condition. prepared for the quotation or
factory acceptance test data bymanufacturer

History of the document
Version01.0

Date
21 February 2020

Contents revised
JC5, Annex 4
Initial approval.

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