Additional Information on Default Values
for Packaged Air Conditioners

1Default values for COP for the calculation of reference emissions

The proposed methodology is to introduce a water-to-water double-bundle modular heat pump(modular HP) to a new building. The modular HP generates both hot and chilled water, wherechilled water is used for air conditioning (A/C) in a communal area of the building.
A/C used in commercial buildings and office buildings is, in general, either packaged A/C orchiller. According to an expert at a construction company in Indonesia, packaged A/C has alimitation in a height difference between indoor and outdoor units. Based on various cataloguesof the 2014 models of packaged A/C that the construction company obtained in South-East Asia,
the maximum height difference between indoor and outdoor units is approximately 90m. Below
are some of the examples that the construction company was involved:
Table 1: Examples of buildings and their A/C types
Application

Country

Completion

No. of floors

A/C type

Office + Commercial

Indonesia

2002(high-rise)

PackagedOffice

Indonesia

2007

33F

PackagedOffice

Indonesia

2008

28FPackaged

OfficeIndonesia

2008

29F+B5F

Packaged

OfficeIndonesia

2008

43F

Packaged

OfficeMalaysia

2008

29F

Packaged

Office+ Shopping complex

Singapore

1999

25F

Packaged

Bank + Office

Singapore

1999

17F

Packaged

Since the proposed methodology assumes that the reference emissions is a packaged A/C type,conditions of the height of project building is set according to the maximum height difference
between indoor and outdoor units and inserted as one of the eligibility criteria in the methodology.
Indonesia has a national standard for A/Cs in buildings. Known as SNI 6390:2011 (EnergyConservation for HVAC System in Buildings), it stipulates a minimum recommended
Coefficient of Performance (COP) for split A/C, packaged A/C and chillers. SNI 6390:2011 isadopted in 2011 and applicable to new buildings from 2012 onwards. SNI 6390:2011 states thatchillers are used when cooling capacity is greater than 176 kW or 600,000 BTU/hr. For thisreason, the first eligibility criterion also requires the modular HP's cooling capacity to be lessthan 176 kW or 600,000 BTU/hr to assume that the reference scenario is the packaged A/C.
Table 2 shows the minimum efficiency recommended by SNI 6390:2011 for the packaged A/C.

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Table 2: Efficiencies for packaged A/C recommended by SNI 6390:2011
Minimum efficiency

A/C type

COP

kW/TR

Variable Refrigerant value*

3.70

0.951

Split duct

2.60

1.353

* "Variable Refrigerant Value" means Variable Refrigerant Volume A/C system.
Source: SNI 6390:2011

SNI 6390 is still treated as a voluntary performance target in Indonesia in general except inJakarta city where it is treated as a mandatory requirement under the Governor Regulation No.
38/2012 on Green Building1 enforced by the Government of Special Capital Region of Jakarta.
Governor Regulation No. 38/2012 is put into effect as of April 2013, and the buildings as
categorized in Table 3 following must comply with the latest performance standard of SNI 6390
when applying for construction and occupancy permits2:
Table 3: Jakarta City’s Governor Regulation No. 38/2012
Floor area
Office, shopping, apartment> 50,000 m2

Hotel and health-related facilities (e.g. hospitals, health> 20,000 m2

care centers, etc.)> 10,000 m2

Educational facilities
Source: Government of Special District of Jakarta

As shown in Table 3, the Jakarta City's application of SNI 6390 is specifically limited tolarge-scale buildings and facilities. An interview with the government of Jakarta City on 17
December, 2014 confirms that only less than 10 buildings have so far met the Table 3
requirement out of approximately 20,000 building permit requests per year from 2012.
Therefore, it is considered to be appropriate to set the level of efficiency required by
SNI-03-6390:2011 in this methodology.

Accordingly, the default value for the efficiency of Packaged A/C is set as follows:
Table 3: Default efficiency of packaged A/CA/C type

COPs

Packaged A/C3.70

1

http://www.gbcindonesia.org/download/doc_download/58-pergub-38-tahun-2012-bangunan-gedung-hijau&sa=U&ei=tleQVKvVIZft8gW6_oK4Dg&ved=0CB0QFjAB&usg=AFQjCNFA602J0UxOlCeYRkHVCDzq1aFaiA
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For existing buildings, different rules applied. Occupancy permit is required to be renewed every 5 years.

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