energy efficiency of small and large air conditioners · meps for small acs has been slightly...
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Energy Efficiency of Small and Large Air
Conditioners By
Eng. Zayed Albagami
Organised by
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Buildings represented ~30% of the primary energy
consumed with ~80% of electric consumption in 2015
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Energy Efficiency of Small Air Conditioners 2
Scope
•Single-package window type, single split-system non-ducted air conditioners using air-cooled
condensers, single split-system ducted air-conditioners using air-cooled condensers, and heat pumps
using air-cooled condensers or using electric resistance for residential, commercial and industrial
sector as applicable
•Same scope as the previous standard with the exception of capacity modification (up to and including
65,000 Btu/h (19 kW) instead of 70,000 Btu/h).
‣Air conditioner with capacities exceeding 65,000 Btu/h are covered in the Large AC standard
(SASO 2874/2016)
Exclusions
•Units covered by SASO 2874 : 2016 ‘’Air Conditioners – Minimum Energy Performance
Requirements and Testing Requirements’’ standard
•Evaporative coolers
•Mobile (windowless) and portable units with exhaust air duct
•Individual assemblies not constituting a complete refrigeration system such as condensing
units for separate use
•Models that have been granted exemption by SASO due to specific design for applications
such as air-conditioners that are not intended for human comfort
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The new small AC energy efficiency (EE) labels will have
7 classes
3
Bar ColorEnergy Efficiency
Class (Arabic)
Equivalent Energy
Efficiency Class
EER limits (rated value)
(Btu/h)/W at T1
Dark green أ A EER ≥ 16.5
Green ب B 16.5> EER ≥ 14.5
Light green ج C 14.5> EER ≥ 13.0
Yellow د D 13.0> EER ≥ 11.8
Orange هـ E 11.8> EER ≥ 10.8
Dark orange و F 10.8> EER ≥ 9.80
Dark red ز G 9.80> EER ≥ 9.0
Note: For labelling purposes, the Arabic letters shall be used. The equivalent English version is only provided for informational purposes.
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Small AC MEPS requirements will be based on rated
values according to the acceptance criteria
4
Acceptance
criteria
• Tested power ……………………….....................................≤ 1.05 x rated power
• Tested cooling capacity …………….…..........…. ≥ 0.95 x rated cooling capacity
• Tested EER …………………………….….….≥ MEPS and ≥ 0.95 x rated EER
• The standard for tests is defined according to the type of AC in Clause 4
• Tested COP ………………………………….….……………...≥ 0.95 x rated COP
• Tested voltage …………….......... (refer to the standard mentioned in Clause 2)
• Test Frequency …………………...………………………..……...…….60 Hz ±2%
• Testing conditions (T1) …………..(refer to the standard mentioned in Clause 2)
• Testing conditions (T3) …………. (refer to the standard mentioned in Clause 2)
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MEPS for small ACs has been slightly changed since the
last standard update
5
Rated Cooling Capacity (CC) (BTU/h) at T1
MEPS
T1 EER* T3 EER**
Window AC
CC ≤ 24,000 9.8 7.0
24,000 < CC ≤ 65,000 9.0 6.20
Split AC CC ≤ 65,000 11.8 8.30
Previously split in 2:CC ≥ 24,000
and18000 < CC ≤ 24000
Previously 11.5Previously 8.5
* External testing temperature at 35oC
** External testing temperature at 46oC
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There will be 2 Small AC energy efficiency labels based
on available functions
6
COOLING & HEATING LABEL COOLING ONLY LABEL
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Energy Efficiency of Large Air Conditioners
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A team of ~60 representatives from major AC manufacturers, importers,
distributors, and retailers developed the standard for large HVAC
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The team agreed on a specific product scope, testing methods, MEPS
and enforcement dates through its consensus-driven approach
8
Product scope
Testing methods
MEPS and
Enforcement
•6 main product categories fall within the product scope:-Electrically operated air conditioners
-Condensing units
-Chillers
-Absorption chillers
-Electrically operated variable refrigerant flow (VRF) air conditioners
-Close control air conditioners and condensing units serving computer rooms
•After extensive discussion, the technical team decided to adopt AHRI and ISO testing
standards for all the above categories
•SASO approved the final decision on testing standards
•Enforcement date and minimum MEPS were also unanimously agreed
upon by all participants and then validated by SEEP leadership
(Proposed date September 2017)
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Electrically operated air conditioners – air cooled9
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Electrically operated air conditioners – water cooled10
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Electrically operated air conditioners – evaporative cooled10
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Condensing units – air cooled10
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Condensing units – water cooled10
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Condensing units – evaporative cooled10
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Chillers – air cooled10
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Chillers – water cooled electrically operated, positive displacement10
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Chillers – water cooled electrically operated, centrifugal10
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Absorption chillers – air cooled absorption, single effect10
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Absorption chillers – water cooled absorption, single effect10
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Absorption chillers – absorption double effect, indirect fired10
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Absorption chillers – absorption double effect, direct fired10
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VRF multi split air conditioners – air cooled10
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VRF multi split air conditioners – heat pumps10
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VRF multi split air conditioners – water cooled10
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Close control air conditioners – air cooled10
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Close control air conditioners – water cooled10
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Registration of the large AC product4
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Thank You for attending this presentation
Organised by