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8/6/2019 Energy Conservation Building Codes - Siri Exergy
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Efficiency Building Codes in
India
Launched on 27th MAY 2007
Siri Exergy & Carbon Advisory Services (P) Ltd,
Hyderabad
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Energy Use in Buildings is increasingrapidly
• According to Construction IndustryDevelopment Council (CIDC)
• In 2004-05 residential construction
accounted for 19.25 million sq metersand commercial construction 21.50million sq meters.
• For 2005-06 a 10% increase fromprevious year is expected.
• Most new commercial construction isair conditioned
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There are strong disincentives toenergy efficiency in buildings
• Designers/builders incur first cost associated withenergy efficiency; users reap benefits
• Strong first cost bias
• Lack of availability of efficient products• Lack of equipment testing & certification.
• Lack of energy expertise
• Lack of awareness, info. and tools
• Energy Conservation Building Code (ECBC) isessential to ensure building energy efficiency
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ECBC Development
Process
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BEE’s ECBC Development Approach• Broad Stakeholder participation
– Building Industry, Manufacturers, Professionals,Govt. Agencies etc.
• Addresses local design conditions andconstruction practices
• Emphasis on maximizing building envelopebenefits – to encourage better designs
– Examples – daylighting and natural ventilation
• First generation code – ease of use is a priority
– Both in terms of code requirements and language
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Broad StakeholderParticipation
Local Businesses &
Financial Institutions
Local Businesses &
Financial Institutions
Stakeholders
Stakeholders
Building Owners
Building Owners
Builders/Contractors
Builders/Contractors
Legislative Agencies
Legislative Agencies
Educational Institutions
Educational Institutions
Manufacturers
Manufacturers
Architects/Engineers
Architects/Engineers
Utilities
Utilities
Standard Setting
Bodies
Standard Setting
Bodies
Building Users
Building UsersFinancial Institutions
Financial Institutions
Advocacy Groups& Associations
Advocacy Groups
& Associations
Funding Agencies
Funding Agencies
UserG
r
oups
Govern
menta
Industry
Fund
ers
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Formation of the Committee of Experts (COE)
• COE was formed in November 2003 toprovide inputs and oversee codedevelopment process.
• The COE has representation from various
stakeholder groups including – Architects,
– Builders,
– Engineers,
– Manufacturers, – Schools of Architecture,
– Building Research Associations,
– Energy Conservation Organizations and
– other experts from the Building Industry.
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Technical Subcommittees
• The COE was divided into technical sub committees
• Each sub committee shall deal with a specific aspect of thecode.
• Allocation of tasks has been done under the following
categories.1. Opaque Envelope
2. Fenestration
3. Lighting
4. Mechanical
5. Code Structure and Organization6. Compliance and Enforcement Plan
7. Implementation Plan
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Role of the COE
• With the inputs and comments received from the COEa Code structure and Methodology was developed.
• The code structure established the code developmentprocedure, defines the boundaries of the code,identifies building components to be considered,establishes parameters for evaluating measures, anddefines the methodology for analysis.
• The methodology established a method to carry outthe stringency analysis for the envelope (opaque andfenestration), Lighting, and HVAC parameters.
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ECBC development Process
• An extensive data collection was carried out forconstruction types and materials, glass types,insulation materials, lighting and HVACequipment
• Base case simulation models were developed
• The stringency analysis was done throughdetailed energy and life cycle cost analysis.
• A stringency level for each code component wasestablished
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ECBC development Process
• The stringency analysis results were reviewed by the COE
• The numbers and simulation models were revised on the basis of comments received from the COE and the second set waspresented to the Committee
• The draft code was then developed incorporating all the comments
received from the COE.
• The draft was then circulated to other stakeholders for review
• The second draft of the ECBC was developed after addressingcomments from stakeholders
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Component Approach to
Standards Development• The energy budget for the whole buildingperformance approach is “built-up” fromthe requirements of the individual
components
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ECBC Scope• Mandatory Scope Covers commercial buildings
– Connected load in excess of 500kWor
– Contract demand in excess of 600 kVA
– Recommended for all buildings with conditionedarea >1000m2
• Applies to New Construction only
• Building components included – Building Envelope (Walls, Roofs, Windows)
– Lighting (Indoor and Outdoor)
– Heating Ventilation and Air Conditioning (HVAC)System
– Service Water Heating and Pumping
– Electrical Systems (Power Factor, Transformers)
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Geographical
Variations
Five climate zones1. Composite (Delhi)
2. Hot Dry (Ahmadabad)
3. Hot Humid (Kolkata),
4. Moderate (Bangalore)
5. Cold (Shillong)
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ECBC Impact
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25%-40% Reduction in BuildingEnergy Use
40% 40% 39%
27%29%
37%36%
34% 33%34%
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
Delhi Ahmedabad Kolkata Bangalore Shillong % S
a v i n g V s
T y p i c a l B u i l d i n g
s
24 Hr Operation Buildings Daytime Use Buildings
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National Impact Potential
• The average energy use for typicalcommercial building is 200 kWh/sq.meter/year.
• Mandatory enforcement of ECBC canreduce the energy use by 30-40% to120-160 kWh/sq. meter/year.
• Nationwide Mandatory enforcement of
ECBC will yield a saving of 1.7 billionkWh for 2005-2006.
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Impact of Energy Codes
• Market Development for EE & RE products – Building Insulation – Energy Efficient Windows (Glass and Frames) – High-Efficiency HVAC Equipment
– Solar-Thermal Hot Water Systems• Improved Design Practices
– Lighting and Day lighting – Natural Ventilation/Free-Cooling Systems
• Improved Performance• Improved Power Factor
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Implementation
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Typical ImplementationSchedule
Phases
1 Development
2 Implementation Preparation
3 Enforcement
4 Revisions
9
Years
5 6 7 81 2 3 4
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Implementation Options
• Implementation program will includeappropriate mandatory administration andenforcement of the ECBC
– for government buildings and
– for private sector buildings.
• Traditional administration and enforcement vialocal building code enforcement should beestablished and put into place.
• supplement this type of enforcement withinnovative methods like enforcement viamandatory compliance prior to hookup of theelectricity supply from the electric utility.
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ECBC Development: NextSteps
• Checking and Certification Systems forEquipment and Systems
• Capacity building of State and Municipal
implementing agencies• Design Manuals, Software, and Training
and Technical support for Architects,Engineers, and Code Officials
• Awareness programs for building owners,designers, and users
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Potentials
• There is a very large potential forenergy savings in buildings,
– as well in existing buildings
– as in new buildings
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Potentials New Buildings
• New buildings can bebuilt with much lowerenergy consumption – Examples show only 33 or
20 % energy usecompared with today's
standard for mostcountries
• New buildings canalready today be builtwith Zero Net Energy
• The potential for savingis enormous !
Zero EnergyExamples from
California and
Florida
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Experiences of Other Countries
Singapore
• Singapore since 1979 has adopted a mandatory BEC that
was modeled after Standard 90-1975, of the American
Society for Heating Refrigerating and Air-conditioning
Engineers (ASHRAE).•Singapore has persistently implemented a mandatory BEC
and associated energy consuming equipment in commercial
buildings.
• She has now separate requirements on different building
utilities and services
• A ‘whole building energy demand’ approach has also been
developed to assist building developers.
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Experiences of Other Countries
Hong Kong
• Hong Kong adopted a voluntary BEC since 1995, and has
periodically revised and updated her code
• The Electrical and Mechanical Services Department
(EMSD) conducted promotion program of DSM and provideinformation for building management to compare the
consumption of it building with ‘benchmark’ of same building
type.
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Experiences of Other Countries
Malaysia and the Philippines
• Malaysia has adopted a federal voluntary ‘Guideline’ on
building energy efficient design.
• The Philippines has a similar scheme.
ECBC
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The code is mandatory for commercial buildings or buildingcomplexes that have a connected
load of 500 kW or greater or a contract demand of 600kVA or greater. The code is also
applicable to all buildings with a conditioned floor
area of 1,000 m2 (10,000 ft2) or greater.
The code is recommended for all other buildings.
ECBC
ECBC( td’)
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2.2 Exemptions
The provisions of this code do not apply to:
(a) Buildings that do not use either electricity or fossil fuel,
(b) Equipment and portions of building systems that use energy
primarily for manufacturing processes
2.3 Safety, Health and Environmental Codes Take Precedence
Where this code is found to conflict with safety, health,
or environmental codes, the safety,health, orenvironmental codes shall take precedence.
ECBC(contd’)
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THANKS!