JCM_MM_AM002_ver01.0
Sectoral scope: 03
Joint Crediting Mechanism Approved Methodology MM_AM002“Installation of Energy-efficient Refrigerators Using Natural Refrigerant at Cold Storage”
A. Title of the methodology
Installation of Energy-efficient Refrigerators Using Natural Refrigerant at Cold Storage, Version
01.0

B. Terms and definitions
Terms
Secondary loop cooling system

Definitions
A secondary loop cooling system is an indirect coolingsystem that cools the object with a secondary refrigerant(e.g., brine) which is cooled by a primary refrigerant (e.g.,HFC). The secondary loop cooling system primarily consistsof the refrigerator which is mainly composed of thecompressor and heat exchangers as the primary refrigeration
cycle and pumps, heat exchangers and fans as the secondaryrefrigeration cycle.
The secondary loop cooling system is described as “primaryrefrigerant/secondary refrigerant” (e.g., “HFC/brine”).

Coefficient of Performance

COP is defined as a value calculated by dividing refrigeration(COP)

capacity by electricity consumption of a refrigerator under afull load condition. Electricity consumption of a refrigerator
is defined in this methodology as the electricity used tooperate the compressor. Electricity consumption of pumps forcirculating the secondary refrigerant, and other ancillaryequipment are not included in the COP calculation.
The room temperature conditions at which COPs arecalculated in this methodology are shown below:•Room temperature condition: - 25 deg. C, 0 deg. C, 5 deg. C•Cooling water fed to condenser: inlet 32 deg. C

Natural refrigerant

Natural refrigerant refers to naturally occurring substanceswith refrigeration capacity and with zero ozone depletion
potential (ODP) (e.g. CO2 and NH3).

1JCM_MM_AM002_ver01.0
Sectoral scope: 03
Periodical check

Periodical check is a periodical maintenance operation doneby the manufacturer or an agent who is authorized by themanufacturer to maintain refrigerator performance (notincluding part replacement or overhaul).

C. Summary of the methodology
Items

Summary

GHG emission reduction Energy-efficientmeasuresCalculation

refrigerators

using naturalrefrigerantisintroduced for energy saving at the food industry cold storage.
ofreference Reference emissions are GHG emissions from reference

emissionsrefrigerators, calculated by using data of power consumption ofproject

refrigerator,

ratioofCOPs

ofreference/project

refrigerators and CO2 emission factor for consumed electricity.
Calculationofproject Project emissions are GHG emissions from project refrigerator,

emissionscalculated with power consumption of project refrigerator andCO2 emission factor for consumed electricity.

Monitoring parameters

Amount of electricity consumed by project refrigerator

D. Eligibility criteria

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

Refrigerator(s) with a secondary loop cooling system using CO2 as a refrigerant
and equipped with inverter is installed at food industry cold storage.

Criterion 2

COP for the project refrigerator(s) installed in the project cooling system is morethan the threshold COP values set in the tables below. (“x” in the table represents
cooling capacity per unit.)
Room temperature

Cooling capacity

Threshold COP

condition

(kW)

value

- 25 deg. C

42.4 ≤ x ≤ 340.0

1.71

0 deg. C
5 deg. C

73.6 ≤ x ≤ 516.4
86.2 ≤ x ≤ 612.6

2.79
3.20

COP for the project refrigerator(s) are calculated with the following conditions:•Room temperature condition: - 25 deg. C or 0 deg. C or 5 deg. C2

JCM_MM_AM002_ver01.0
Sectoral scope: 03•Cooling water fed to condenser: inlet 32 deg. CCriterion 3

Periodical check is planned at least one (1) time annually.

Criterion 4

In the case of replacing the existing refrigerator with the project refrigerator, aplan for prevention of releasing refrigerant used in the existing refrigerator to theair (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 existingone 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 the reference refrigerator

CO2Project emissions
Emission sources

GHG types

Power consumption by the project refrigerator

CO2

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated by multiplying the power consumption of project
refrigerator, ratio of COPs for reference/project refrigerators and CO2 emission factor forelectricity consumed.
The following types of cooling system are identified as possible cooling systems other than theproject system to be installed at food industry cold storage:•For room temperature condition of -25 deg. C: HFC dry expansion (single loop), NH3
flooded, pump system (single loop), HFC/brine (secondary loop) and NH3/brine (secondaryloop)•For room temperature condition of 0 deg. C and 5 deg. C: HFC dry expansion (single loop)

This methodology ensures that net emission reductions are achieved by applying the following
conservative assumptions:
Determination of default values for COPRE:3

JCM_MM_AM002_ver01.0
Sectoral scope: 03
The maximum COP values of refrigerators among the data of possible type cooling systems
available in Myanmar market within the range specified by Criterion 2 is defined as the default
values of COPRE (1.71 for temperature condition of - 25 deg. C, 2.79 for temperature conditionof 0 deg. C and 3.20 for 5 deg. C) to ensure net emission reductions.
Emissions associated with leakage of refrigerant in operation:
Among the possible types of cooling systems, two cooling systems use HFCs (R404A, GWP:3,000-4,000) as refrigerant. The project cooling system uses a natural refrigerant that has a verysmall GWP (CO2: 1, NH3: less than 1). Emissions associated with leakage of refrigerant are notcounted in the emission reduction calculation.
Project refrigerator equipped with inverter:
The project refrigerator is controlled by inverter technology. In this methodology, COP isdefined under the condition of full load although in reality a cold storage is often operated under
the condition of partial load where the efficiency of the refrigerator without inverter tends todecrease because of its intermittent operation. Calculating emissions based on the COPs of fullload conditions is deemed conservative since the efficiency of the project refrigerator is likely
to be maintained either at the full load or at partial load condition as it is equipped with inverter.
F.2. Calculation of reference emissions=Where×,,,,×

Reference emissions during the period p [tCO2/p],,

Power consumption of the project refrigerator i during the period p [MWh/p],,i

COP of the project refrigerator i
COP of the reference refrigerator i
CO2 emission factor for consumed electricity [tCO2/MWh]
Identification number of refrigerator

G. Calculation of project emissions

4JCM_MM_AM002_ver01.0
Sectoral scope: 03=Where,,×

Project emissions during the period p [tCO2/p]
Power consumption of the project refrigerator i during the period p [MWh/p],,

CO2 emission factor for consumed electricity [tCO2/MWh]i

Identification number of refrigerator

H. Calculation of emissions reductions=

Where−

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 data
COP of the project refrigerator i

SourceSpecifications for the quotation
or factory acceptance test data

The room temperature conditions at whichat the time of shipment byCOPs are calculated in this methodology aremanufacturer.

shown below:•Room temperature condition: - 25 deg. C,
0 deg. C, 5 deg. C•

Cooling water fed to condenser: inlet 32deg. C,

COP of the reference refrigerator i

Specifications for the quotation
or factory acceptance test data5

JCM_MM_AM002_ver01.0
Sectoral scope: 03
The default values for COPRE,i is appliedat the time of shipment bydepending on the room temperature condition

manufacturer.

set for the project refrigerator i:

The default COP values are

Temperature

Cooling

Default

derived from the maximum

condition

capacity

valuesvalue of COP among the- 25 deg. C

42.4 ≤ x ≤1.71

types of refrigerators except

340kW
0 deg. C

73.6 ≤ x ≤2.79

86.2 ≤ x ≤project within the range
specified by Criterion 2.

516.4kW
5 deg. Cavailable data of the possible

3.20

The survey should prove the612.6kW

use of clear methodology.

*”x” in the table represents cooling capacity

Default values of COPRE,iper unit.

should be revised if necessary
from survey result which is
conducted by JC or project
participants.

CO2 emission factor for consumed electricity[Grid electricity]
PDD of the most recently

When project refrigerator consumes only grid registered CDM project hosted
electricity or captive electricity, the project in Myanmar or the latest
participant applies the CO2 emission factor version
respectively.

ofthe“Tooltocalculate the emission factor
for an electricity system” under

When project refrigerator may consume both the CDM at the time ofgrid electricity and captive electricity, the validation.
project participant applies the CO2 emission
factor with lower value.

[Captive electricity]
For the option a)[CO2 emission factor]

Specification of the captive

For grid electricity: The most recent value power

generation

systemavailable from the source stated in this table at provided by the manufacturer
the time of validation(ηelec [%]).
CO2 emission factor of theFor captive electricity, it is determined based

fossil fuel type used in theon the following options:captivepower

generation

system (EFfuel [tCO2/GJ])a) Calculated from its power generation

6JCM_MM_AM002_ver01.0
Sectoral scope: 03
efficiency (ηelec [%]) obtained from

For the option b)

manufacturer’s specification

Generated

The power generation efficiency based onelectricity by the captive power

lower heating value (LHV) of the captive

generation

power generation system from the[MWh/p]).

manufacturer’s specification is applied;

Fuel amount consumed by the= 3.6 ×100×andsuppliedsystem(EGPJ,pcaptive

powergeneration

system(FCPJ,p[massorweight/p]).

b) Calculated from measured dataNet calorific value (NCVfuelThe power generation efficiency calculated[GJ/mass or weight]) and CO2

from monitored data of the amount of fuelemission factor of the fuelinput for power generation ((EFfuel [tCO2/GJ]) in order ofamount of electricity generated (, ) and the, )preference:

during the monitoring period p is applied. The1) values provided by the fuelmeasurement is conducted with the monitoring supplier;equipment to which calibration certificate is2) measurement by the projectissued by an entity accredited underparticipants;

national/international standards;

3) regional or national default=,

Where:

×××1values;,

4)

IPCC

default

valuesprovided in tables 1.2 and 1.4: Net calorific value of consumed of Ch.1 Vol.2 of 2006 IPCC
fuel [GJ/mass or weight]

Guidelines on National GHG
Inventories. Lower value isNote:applied.

In case the captive electricity generation
system meets all of the following conditions,[Captive electricity with diesel

the value in the following table may befuel]applied toCDM approved small scaledepending on the consumed

fuel type.

methodology: AMS-I.A.

•The system is non-renewable generation[Captive electricity with naturalsystemgas]

Electricity generation capacity of the2006 IPCC Guidelines onsystem is less than or equal to 15 MW

National GHG Inventories for•the source of EF of natural gas.

7

JCM_MM_AM002_ver01.0
Sectoral scope: 03
fuel type

DieselfuelNatural gas

0.8 *10.46 *2

CDM Methodological tool
"Determining the baseline
efficiency of thermal or electricenergy generation systems*1 The most recent value at the time ofversion 02.0" for the default

validation is applied.

efficiency for off-grid power*2 The value is calculated with the equation inplants.

the 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.

History of the document
Version01.0

Date
16 January 2020

Contents revisedElectronic decision by the Joint Committee
Initial approval.

8