ENERGY CONSERVATION ENERGY CONSERVATION BUILDING CODE – 2006BUILDING CODE – 2006

PRESENTATION BY PRESENTATION BY

VP GUPTAVP GUPTAPRINCIPAL CHIEF ENGINEER PRINCIPAL CHIEF ENGINEER (ELECTRICAL), BSNL(ELECTRICAL), BSNL

CHENNAICHENNAI

PURPOSEPURPOSE

•To provide minimum To provide minimum requirements for the requirements for the energy efficient design energy efficient design and construction of and construction of buildings.buildings.

SCOPESCOPE• Mandatory for commercial Mandatory for commercial

buildings having connected buildings having connected load of >=500KW or contract load of >=500KW or contract demand of >=600 KVA. Also demand of >=600 KVA. Also applicable for air-condition area applicable for air-condition area of >=1000 sq.mt. Including of >=1000 sq.mt. Including existing bldgsexisting bldgs

BUILDING ENVELOPEBUILDING ENVELOPE

• Fenestration U-factorsFenestration U-factors• Solar heat gain coefficients Solar heat gain coefficients • Air leakagesAir leakages• Opaque construction, building Opaque construction, building

envelope ceiling, skylights envelope ceiling, skylights within the parameters defined.within the parameters defined.

HEATING, VENTILATION & HEATING, VENTILATION & AIR-CONDITIONINGAIR-CONDITIONING

• Air conditioning equipment Air conditioning equipment minimum Coefficient of minimum Coefficient of Performance(COP) for air cooled Performance(COP) for air cooled A.C. equipment more than 5.4 ton A.C. equipment more than 5.4 ton and up to 20 ton is 3.08. and up to 20 ton is 3.08.

• More than 20 ton COP is 2.93. More than 20 ton COP is 2.93. • COP = KW refrigerant effect / KW COP = KW refrigerant effect / KW

input to compressor.input to compressor.

HEATING, VENTILATION & AIR HEATING, VENTILATION & AIR CONDITIONING - ControlsCONDITIONING - Controls

• A.C. system controlled by a A.C. system controlled by a time-clock for start & stop and time-clock for start & stop and temperature control with a temperature control with a temperature dead band of 3 C temperature dead band of 3 C (5 F). (5 F).

• All pipes / ducts to be All pipes / ducts to be insulated.insulated.

HEATING, VENTILATION & AIR HEATING, VENTILATION & AIR CONDITIONING - BalancingCONDITIONING - Balancing

• Applicable for area exceeding 500 Applicable for area exceeding 500 sq.mt. sq.mt.

• Air system to be balanced to minimize Air system to be balanced to minimize throttling losses throttling losses

• For fan >= 0.75 KW ( 1hp), fan speed to For fan >= 0.75 KW ( 1hp), fan speed to be adjusted to meet the design flow. be adjusted to meet the design flow.

• Hydraulic system to be balanced to Hydraulic system to be balanced to minimize throttling losses minimize throttling losses

HEATING, VENTILATION & AIR HEATING, VENTILATION & AIR CONDITIONING – Balancing - CONDITIONING – Balancing - ContdContd

• For pump >= 7.5 KW (10 HP), pump For pump >= 7.5 KW (10 HP), pump impeller shall be trimmed or pump speed impeller shall be trimmed or pump speed shall be adjusted to meet the design flow. shall be adjusted to meet the design flow.

• For system >= 6.3 ton supply capacity of For system >= 6.3 ton supply capacity of 2500 CFM and air economizer capable of 2500 CFM and air economizer capable of modulating outside air and return air modulating outside air and return air dampers to supply 100% of the design dampers to supply 100% of the design supply air quantity as outside air. supply air quantity as outside air.

• Not applicable in hot dry and warm Not applicable in hot dry and warm humid climate. i.e. Tamilnadu.humid climate. i.e. Tamilnadu.

HOT WATERHOT WATER

    Solar water heater for Solar water heater for at least 1/5 of at least 1/5 of designed capacity of designed capacity of hot water requirement. hot water requirement. All pipes to be All pipes to be insulatedinsulated

LIGHTINGLIGHTING

•Applicable for Applicable for building larger than building larger than 500 sq.mt500 sq.mt

LIGHTING - ContdLIGHTING - Contd

• EXIT SIGNS: EXIT SIGNS: Not to exceed 5 Not to exceed 5 Watt. Per Face.Watt. Per Face.

• EXTERIOR LIGHT:EXTERIOR LIGHT: Luminaries Luminaries having lamp of 100 Watt or having lamp of 100 Watt or more shall have minimum more shall have minimum efficacy of 60 luminaries per efficacy of 60 luminaries per watt. watt.

LIGHTING - ContdLIGHTING - Contd

• INTERIOR LIGHTING POWERINTERIOR LIGHTING POWER: Light : Light power density not more than power density not more than 10.8( watt per sq. mtr.) for office 10.8( watt per sq. mtr.) for office building.building.

• EXTERIOR LIGHTINGEXTERIOR LIGHTING : Building : Building facades 2 watt per sq. mt. of facades 2 watt per sq. mt. of vertical facet area, building exit 60 vertical facet area, building exit 60 watt per linear meter of door widthwatt per linear meter of door width

LIGHTING - CONTROLLIGHTING - CONTROL

• Occupancy sensors for areas < 30 sq.mt. Occupancy sensors for areas < 30 sq.mt. • Schedule programme timers for area <= Schedule programme timers for area <=

2500 sq.mts2500 sq.mts• Independent control for a maximum of Independent control for a maximum of

250 sq.mt 250 sq.mt • Day-light sensors for area >25 sq.mt. for Day-light sensors for area >25 sq.mt. for

reducing the light output of the luminar in reducing the light output of the luminar in the day lighted areas by at least 50% and the day lighted areas by at least 50% and control only the luminaries located control only the luminaries located entirely within the day lighted area.entirely within the day lighted area.

ELECTRIC POWERELECTRIC POWER

•Transformers, full load Transformers, full load losses not to exceed 1.5% losses not to exceed 1.5% for 400 KVA, 1.4% for 630 & for 400 KVA, 1.4% for 630 & 800 KVA and 1.2% for 1000 800 KVA and 1.2% for 1000 KVA.KVA.

ELECTRIC POWER – ENERGY ELECTRIC POWER – ENERGY EFFICIENT MOTORSEFFICIENT MOTORS

• All motors of .375 KW. ( ½ All motors of .375 KW. ( ½ hp) operating more than hp) operating more than 1500 hrs. per year shall be 1500 hrs. per year shall be energy efficientenergy efficient

• 88.3% for 5.5 hp 88.3% for 5.5 hp • 89.2% for 7.5 hp89.2% for 7.5 hp• 86.4% for 3 hp.86.4% for 3 hp.

ELECTRIC POWER ELECTRIC POWER --POWER FACTOR CORRECTIONPOWER FACTOR CORRECTION

• All connections >= 100 A, 3 phase All connections >= 100 A, 3 phase shall maintain power factor between shall maintain power factor between 0.98 lag to 1 at the point of 0.98 lag to 1 at the point of connection. connection.

• Power supplies shall have KW hour Power supplies shall have KW hour meter up to 65 KVA meter up to 65 KVA

• Maximum Demand Meter, Power Maximum Demand Meter, Power Factor Meter and KWH Meter for Factor Meter and KWH Meter for service between 1000 KVA and 65 service between 1000 KVA and 65 KVA. KVA.

ELECTRIC POWER ELECTRIC POWER --POWER FACTOR CORRECTION - POWER FACTOR CORRECTION - ContdContd

• Power distribution losses not to exceed Power distribution losses not to exceed 1% by proper designing of power cables.1% by proper designing of power cables.

• All power junction boxes & cable All power junction boxes & cable termination points may be provided with termination points may be provided with temperature monitoring mechanism temperature monitoring mechanism comprising of sensors in the enclosed comprising of sensors in the enclosed chambers and properly visible chambers and properly visible temperature outside. temperature outside.

• A record to be maintained on ‘daily A record to be maintained on ‘daily basis’. basis’.

THANKSTHANKS