JCM_VN_AM006_ver01.1
Sectoral scope: 03
Joint Crediting Mechanism Approved Methodology VN_AM006“Introduction of air conditioning system equipped with inverters”

A. Title of the methodology
Introduction of air conditioning system equipped with inverters, Version 01.1

B. Terms and definitions
Terms

Definitions

Air-conditioning system with

Air-conditioning system with inverters is a type of air

inverters

conditioning system which contains inverter, an apparatus
to control the speed of the compressor motor in line withdifferent load demand.

Coefficient of Performance

Coefficient of Performance (COP) is the cooling capacity(COP)

per rated electricity consumption of the air conditioning
system.
The values of cooling capacity and rated electricity
consumption are defined under specific temperature statedin ISO5151:2010.
In this methodology, a COP value of project air
conditioning system is set based on calculation by thevalue of its cooling capacity divided by the electricity
consumption of the outdoor unit according to data bymanufacturer.

C. Summary of the methodology
Items
GHG

emissionmeasures

Summary
reduction This methodology applies to the project that aims for savingenergy by introducing air-conditioning system with inverter forcooling in Vietnam.

1JCM_VN_AM006_ver01.1
Sectoral scope: 03
Calculationofreference GHG emissions associated with electricity consumption ofemissions

reference air conditioning system are calculated based on themonitored electricity consumption of project air conditioning
system, the ratio of COPs of reference/project air conditioning
system, and the CO2 emission factor of the electricity consumed
by project air conditioning system.

Calculationof

project GHG emissions associated with electricity consumption ofemissions

project air conditioning system are calculated based on themonitored electricity consumption of project air conditioning
system and the CO2 emission factor of the electricity consumed
by project air conditioning system.

Monitoring parametersElectricity consumption of outdoor unit of project airconditioning system

Total electricity consumption of indoor units of project air
conditioning system

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

Air-conditioning system with inverter is newly installed or installed to replace
existing non-inverter air conditioning system.

Criterion 2

Cooling capacity of project air conditioning system is more than or equal to14kW.

Criterion 3

COP of project air-conditioning system has a COP value higher than that ofthe value indicated in the table below.
COP for Reference Air Conditioning System (COPRE,i)
Cooling Capacity [kW]14 ≤ x < 2828 ≤ x < 4242 ≤ x < 5656 ≤ x

Criterion 4

Reference COP
2.97
2.94
2.91
2.56

Ozone Depletion Potential (ODP) of the refrigerant used for project airconditioning system is zero.

2

JCM_VN_AM006_ver01.1
Sectoral scope: 03
Criterion 5Plans to prevent release of refrigerants into the atmosphere at the time of airconditioning system removal are prepared for both project air conditioning
system and the existing air conditioning system replaced by the project. In thecase of replacing existing air conditioning system by project air conditioning
system, execution of the prevention plan is checked at the time of verification,e.g. re-use of the refrigerant, in order to confirm that refrigerant used for theexisting air conditioning system removed by the project is not released to theair.

E. Emission Sources and GHG types
Reference emissions
Emission sources

GHG types

Electricity consumption by reference air conditioning systems

CO2Project emissions
Emission sources

GHG types

Electricity consumption by project air conditioning systems (include an CO2indoor unit and an outdoor unit)

F. Establishment and calculation of reference emissions
F.1. Establishment of reference emissions
Reference emissions are calculated with electricity consumption of project air conditioningsystem, ratio of COPs of project/reference air conditioning system, and CO2 emission factor forelectricity consumed.
Taking into consideration the market of air conditioning system in Viet Nam, the COP ofreference air conditioning system is conservatively set ex ante in the following manner toensure the net emission reductions.
- The reference COP, at a certain cooling capacity, is set at the maximum value among theCOP values of the air conditioning systems of single-split type and non-inverter type,which are currently available in the Vietnamese market, in the respective cooling capacityrange.

3

JCM_VN_AM006_ver01.1
Sectoral scope: 03F.2. Calculation of reference emissions

ࡾࡱ࢖ = ෍൛ࡱ࡯ࡼࡶ,࢏,࢕࢛࢚ࢊ࢕࢕࢘,࢖ × ൫࡯ࡻࡼࡼࡶ,࢏,࢕࢛࢚ࢊ࢕࢕࢘ ÷ ࡯ࡻࡼࡾࡱ,࢏ ൯ൟ × ࡱࡲࢋ࢒ࢋࢉ࢏

REp: Reference emissions during the period p [tCO2/p]

ECPJ,i,outdoor,p: Electricity consumption of outdoor unit of project air conditioning system iduring the period p [MWh/p]

COPPJ,i,outdoor: COP of outdoor unit of project air conditioning system i [-]COPRE,i: COP of reference air conditioning system i [-]EFelec: CO2 emission factor for consumed electricity [tCO2/MWh]i: Identification number of air conditioning system [-]G. Calculation of project emissionsܲ‫ܧ‬௣ = ൭෍ ‫ܥܧ‬௉௃,௜,௢௨௧ௗ௢௢௥,௣ + ‫ܥܧ‬௉௃,௜௡ௗ௢௢௥,௣ ൱ × ‫ܨܧ‬௘௟௘௖௜PEp: Project emissions during the period p [tCO2/p]

ECPJ,i,outdoor,p: Electricity consumption of outdoor unit of project air conditioning system iduring the period p [MWh/p]

ECPJ,indoor,p: Total electricity consumption of indoor units of project air conditioning
system during the period p [MWh/p]

EFelec: CO2 emission factor for consumed electricity [tCO2/MWh]i: Identification number of air conditioning system [-]H. Calculation of emissions reductions

ERp = REp - PEp
ERp: Emissions 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]4

JCM_VN_AM006_ver01.1
Sectoral scope: 03

I. Data and parameters fixed ex ante
The source of each data and parameter fixed ex ante is listed as below.
Parameter
EFelecDescription of data
CO2 emission factor for consumed electricity.

Source[Grid electricity]
MinistryofNatural

When project air-conditioning system consumes Resources and Environment
only grid electricity or captive electricity, the ofVietnam(MONRE),

project participant applies the CO2 emission Vietnamese DNA for CDM
factor respectively.

unless otherwise instructedby the Joint Committee.

When project air-conditioning system may
consume both grid electricity and captive [Captive electricity]
electricity, the project participant applies the For the option a)
CO2 emission factor with lower value.

Specification of the captivepower[CO2 emission factor]

generation

systembythe

provided

For grid electricity: The most recent value manufacturer (ηelec,CG [%]).
available from the source stated in this table at CO2 emission factor of thethe time of validation

fossil fuel type used in thecaptive

For captive electricity, it is determined based onpower

generation

system (EFfuel,CG [tCO2/GJ])

the following options:
For the option b)a) Calculated from its power generation

Generated

efficiency (ηelec,CG [%]) obtained fromelectricity by the captive

manufacturer’s specification

power

The power generation efficiency based on lower(EGPJ,CG,p [MWh/p]).

heating value (LHV) of the captive power

Fuel amount consumed bygeneration system from the manufacturer’s

the captive power generation

specification is applied;system (FCPJ,CG,p [mass orEFୣ୪ୣୡ = 3.6 ×100ηୣ୪ୣୡ,େୋ× EF୤୳ୣ୪,େୋ

andsuppliedgenerationsystemvolume/p]).
Net

calorific(NCVfuel,CG[GJ/massvalueorb) Calculated from measured datavolume]) and CO2 emission

The power generation efficiency calculated fromfactor (EFfuel,CG [tCO2/GJ])

5

JCM_VN_AM006_ver01.1
Sectoral scope: 03
monitored data of the amount of fuel input forof the fuel consumed by thepower generation (FCPJ,CG,p) and the amount ofcaptive

power

generationelectricity generated (EGPJ,CG,p) during thesysteminordermonitoring period p is applied. Thepreference:measurement is conducted with the monitoring

1) values provided by theequipment to which calibration certificate isfuel supplier;issued by an entity accredited under2) measurement by thenational/international standards;

project participants;EFୣ୪ୣୡ = FC୔୎,େୋ,୮ × NCV୤୳ୣ୪,େୋ × EF୤୳ୣ୪,େୋ
×1of3) regional or national
default values;EG୔୎,େୋ,୮

4) IPCC default values

NCVfuel,CG: Net calorific value of fuel consumed

1.4 of Ch.1 Vol.2 of 2006

by the captive power generation system

IPCC Guidelines on[GJ/mass or volume]

National GHG Inventories.

Where:

provided in tables 1.2 andLower value is applied.
Note:
In case the captive electricity generation system[Captive electricity withmeets all of the following conditions, the value

diesel fuel]in the following table may be applied to EFelec

CDM approved small scaledepending on the consumed fuel type.

methodology: AMS-I.A.

The system is non-renewable generation[Captive electricity withsystemnatural gas]

Electricity generation capacity of the2006 IPCC Guidelines on

system is less than or equal to 15 MW

National GHG Inventories

for the source of EF offuel typeDieselEFୣ୪ୣୡ

fuelNatural gas

0.8 *10.46 *2

natural gas.
CDM Methodological tool
"Determining the baseline
efficiency of*1 The most recent value at the time ofvalidation is applied.
*2 The value is calculated with the equation in
the option a) above. The lower value of default
effective CO2 emission factor for natural gas
6

thermalor

electric energy generation
systems version02.0" for thedefault

efficiency

off-grid power plants.

forJCM_VN_AM006_ver01.1
Sectoral scope: 03(0.0543 tCO2/GJ), and the most efficient valueof default efficiency for off-grid gas turbine
systems (42%) are applied.
COP of reference air conditioning system i, as

Nominal value available on

indicated in Table 1. The values of cooling

product catalogs,

capacity and rated electricity consumption used

specification documents orin the calculation of COP are obtained fromwebsites, hearing survey.

product catalogs, specification documents orwebsite, hearing survey of major manufacturers

The

defaultin Vietnam.

derived from the result ofsurvey

COPRE,ion

Table 1 : COP for Reference Air Conditioning

conditioning

System (COPRE,i)

non-inverter

valuesCOP

areofairsystem

withfrom

manufacturers that have highCooling Capacity [kW]Reference COP

14 ≤ x < 28

2.97

market share.

28 ≤ x < 42

2.94

The default values should be

42 ≤ x < 56

2.91

56 ≤ x

2.56

revised if necessary fromsurveyresultwhich

isconducted by JC or project
participants

every

threeyears. The survey should
prove

theuseofclear

methodology.

COPPJ,i,outdoor

COP of outdoor unit of project air conditioning

Specifications of project airsystem i. The COP is calculated by using theconditioning system for thevalue of cooling capacity and rated electricity

quotation or factory

consumption of outdoor unit provided byacceptance test data bymanufacturer.

manufacturer.

History of the document
Version
01.1

Date
10 October 201701.0

20 October 2016

Contents revised
JC6
 Revision of methods to determine CO2 emission factor
for consumed electricity in section I
JC5, Annex 7
Initial approval.

7