energy conservation building codes - siri exergy

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



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



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



ECBC Development

Process



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



Broad StakeholderParticipation

Local Businesses &

Financial Institutions

Local Businesses &


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


Advocacy Groups& Associations

Advocacy Groups

& Associations

Funding Agencies

Funding Agencies

UserG

r

oups

Govern

menta

Industry

Fund

ers



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.



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



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.



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



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



Component Approach to

Standards Development• The energy budget for the whole buildingperformance approach is “built-up” fromthe requirements of the individual

components



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)



Geographical

Variations

Five climate zones1. Composite (Delhi)

2. Hot Dry (Ahmadabad)

3. Hot Humid (Kolkata),

4. Moderate (Bangalore)

5. Cold (Shillong)



ECBC Impact



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



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.



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



Implementation



Typical ImplementationSchedule

Phases

1 Development

2 Implementation Preparation

3 Enforcement

4 Revisions

9

Years

5 6 7 81 2 3 4



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.



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



Potentials

• There is a very large potential forenergy savings in buildings,

– as well in existing buildings

– as in new buildings



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

http://www.fsec.ucf.edu/bldg/active/zeh/lakeland/index.htm

http://www.fsec.ucf.edu/bldg/active/zeh/lakeland/index.htm



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.




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.




Malaysia and the Philippines

• Malaysia has adopted a federal voluntary ‘Guideline’ on

building energy efficient design.

• The Philippines has a similar scheme.

ECBC



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’)



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’)



THANKS!

energy conservation building codes - siri exergy

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