ENERGY CONSERVATION BUILDING CODE – 2006 PRESENTATION BY VP GUPTA PRINCIPAL CHIEF ENGINEER (ELECTRICAL), BSNL CHENNAI

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

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

BUILDING ENVELOPE Fenestration U-factorsFenestration U-factors Solar heat gain coefficientsSolar heat gain coefficients Air leakagesAir leakages Opaque construction, building envelope ceiling, skylights within the parameters defined.Opaque construction, building envelope ceiling, skylights within the parameters defined.

HEATING, VENTILATION & AIR-CONDITIONING Air conditioning equipment minimum Coefficient of Performance(COP) for air cooled A.C. equipment more than 5.4 ton and up to 20 ton is 3.08.Air conditioning equipment minimum Coefficient of Performance(COP) for air cooled A.C. equipment more than 5.4 ton and up to 20 ton is More than 20 ton COP is 2.93.More than 20 ton COP is COP = KW refrigerant effect / KW input to compressor.COP = KW refrigerant effect / KW input to compressor.

HEATING, VENTILATION & AIR CONDITIONING - Controls A.C. system controlled by a time-clock for start & stop and temperature control with a temperature dead band of 3 C (5 F).A.C. system controlled by a time-clock for start & stop and temperature control with a temperature dead band of 3 C (5 F). All pipes / ducts to be insulated.All pipes / ducts to be insulated.

HEATING, VENTILATION & AIR CONDITIONING - Balancing Applicable for area exceeding 500 sq.mt.Applicable for area exceeding 500 sq.mt. Air system to be balanced to minimize throttling lossesAir system to be balanced to minimize throttling losses For fan >= 0.75 KW ( 1hp), fan speed to be adjusted to meet the design flow.For fan >= 0.75 KW ( 1hp), fan speed to be adjusted to meet the design flow. Hydraulic system to be balanced to minimize throttling lossesHydraulic system to be balanced to minimize throttling losses

HEATING, VENTILATION & AIR CONDITIONING – Balancing - Contd For pump >= 7.5 KW (10 HP), pump impeller shall be trimmed or pump speed shall be adjusted to meet the design flow.For pump >= 7.5 KW (10 HP), pump impeller shall be trimmed or pump speed shall be adjusted to meet the design flow. For system >= 6.3 ton supply capacity of 2500 CFM and air economizer capable of modulating outside air and return air dampers to supply 100% of the design supply air quantity as outside air.For system >= 6.3 ton supply capacity of 2500 CFM and air economizer capable of modulating outside air and return air dampers to supply 100% of the design supply air quantity as outside air. Not applicable in hot dry and warm humid climate. i.e. Tamilnadu.Not applicable in hot dry and warm humid climate. i.e. Tamilnadu.

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

LIGHTING Applicable for building larger than 500 sq.mtApplicable for building larger than 500 sq.mt

LIGHTING - Contd EXIT SIGNS: Not to exceed 5 Watt. Per Face.EXIT SIGNS: Not to exceed 5 Watt. Per Face. EXTERIOR LIGHT: Luminaries having lamp of 100 Watt or more shall have minimum efficacy of 60 luminaries per watt.EXTERIOR LIGHT: Luminaries having lamp of 100 Watt or more shall have minimum efficacy of 60 luminaries per watt.

LIGHTING - Contd INTERIOR LIGHTING POWER: Light power density not more than 10.8( watt per sq. mtr.) for office building.INTERIOR LIGHTING POWER: Light power density not more than 10.8( watt per sq. mtr.) for office building. EXTERIOR LIGHTING : Building facades 2 watt per sq. mt. of vertical facet area, building exit 60 watt per linear meter of door widthEXTERIOR LIGHTING : Building facades 2 watt per sq. mt. of vertical facet area, building exit 60 watt per linear meter of door width

LIGHTING - CONTROL Occupancy sensors for areas < 30 sq.mt.Occupancy sensors for areas < 30 sq.mt. Schedule programme timers for area <= 2500 sq.mtsSchedule programme timers for area <= 2500 sq.mts Independent control for a maximum of 250 sq.mtIndependent control for a maximum of 250 sq.mt Day-light sensors for area >25 sq.mt. for reducing the light output of the luminar in the day lighted areas by at least 50% and control only the luminaries located entirely within the day lighted area.Day-light sensors for area >25 sq.mt. for reducing the light output of the luminar in the day lighted areas by at least 50% and control only the luminaries located entirely within the day lighted area.

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

ELECTRIC POWER – ENERGY EFFICIENT MOTORS All motors of.375 KW. ( ½ hp) operating more than 1500 hrs. per year shall be energy efficientAll motors of.375 KW. ( ½ hp) operating more than 1500 hrs. per year shall be energy efficient 88.3% for 5.5 hp88.3% 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 - POWER FACTOR CORRECTION All connections >= 100 A, 3 phase shall maintain power factor between 0.98 lag to 1 at the point of connection. All connections >= 100 A, 3 phase shall maintain power factor between 0.98 lag to 1 at the point of connection. Power supplies shall have KW hour meter up to 65 KVAPower supplies shall have KW hour meter up to 65 KVA Maximum Demand Meter, Power Factor Meter and KWH Meter for service between 1000 KVA and 65 KVA.Maximum Demand Meter, Power Factor Meter and KWH Meter for service between 1000 KVA and 65 KVA.

ELECTRIC POWER - POWER FACTOR CORRECTION - Contd Power distribution losses not to exceed 1% by proper designing of power cables.Power distribution losses not to exceed 1% by proper designing of power cables. All power junction boxes & cable termination points may be provided with temperature monitoring mechanism comprising of sensors in the enclosed chambers and properly visible temperature outside.All power junction boxes & cable termination points may be provided with temperature monitoring mechanism comprising of sensors in the enclosed chambers and properly visible temperature outside. A record to be maintained on ‘daily basis’.A record to be maintained on ‘daily basis’.

THANKS