JCM_VN_AM006_ver01.0
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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 01.0

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.

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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.

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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.

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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

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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.
When captive power generation is not available
at the project site, then the most recent
Vietnamese national grid emission factor [EFgrid]
available at the time of validation is applied as[EFelec] and fixed for the monitoring periodthereafter.

Source[EFgrid]
Ministryof
NaturalResources and Environmentof Vietnam (MONRE),
Vietnamese DNA for CDM
unless otherwise instructedby the Joint Committee.

[EFcaptive]
CDM
approved small scale
When captive power generation is available atmethodology:
AMS-I.A
the project site, then [EFelec] is conservatively
selected as below and fixed for the monitoring
period thereafter:
EFelec = min(EFgrid, EFcaptive)
EFcaptive = 0.8 tCO2/MWh**The most recent emission factor available from
CDM approved small scale methodology
AMS-I.A at the time of validation is 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 or
website, hearing survey of major manufacturers
in Vietnam.
COPRE,iTable 1 : COP for Reference Air Conditioning
System (COPRE,i)
Cooling Capacity [kW]Reference COP

14 ≤ x < 282.97

28 ≤ x < 422.94

42 ≤ x < 562.91

56 ≤ x2.56

5The default values arederived from the result ofsurvey on COP of air
conditioning system with
non-inverter
frommanufacturers that have highmarket share.
The default values should be
revised if necessary fromsurvey result which is
conducted by JC or project
participants every threeyears. The survey should
prove the use of clear
methodology.

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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 by

manufacturer.

manufacturer.

History of the document
Version01.0

Date
20 October 2016

Contents revised
JC5, Annex 7
Initial approval.

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