Energy Conservation Building Code-2017

1 EnergyConservationBuildingCode-201719thJ u l y2021A n u ra g B a j p a iE C B C M a s t e r Tra i n e rScope Compliance and ApproachBuilding EnvelopeComfort System and Controls0102030406 Technical Session 105 Introduction INTRODUCTION Energy Conservation Building Code Energy Conservation Building Code (Code) is to provide minimum requirements for the Energy -efficient design and construction of ECBCECBC+ Energy Conservation Building Code 2017 1 to 14 Scope 2 Compliance Approaches-Mandatory, Prescriptive, WBP 3 Technical Scope: MEPS ( 4 to 7)ECBC+, Super ECBC, NZEB Progressive Approach Step Process Case StudySCOPEECBC 2017 -SCOPENew Building The Code is applicable to buildings or Building complexes that have a connected load of 100 kW or greater or a contract demand of 120 kVA or greater and are intended to be used for commercial purposes. Buildings intended for private residential purposes only are not covered by the and Alterations to Existing Buildings If any existing Building after additions or alterations changes its connected load to 100 kilo-Watt (kW) or above or a contract demand of 120 kilo-Volt Ampere (kVA)

2 Or above shall comply with the provisions of 4 through Building Envelope Mechanical systems and equipment, including HVAC Interior and exterior lighting Electrical power and Renewable EnergyCOMPLIANCEMECHANISMECBC SCOPE VARIATIONS IN VARIOUS STATES No change in scope 2 States + Additional Scope-Built Up Area 5 states Modified the connected load/contract demand 6 states + Additional Scope-Conditioned Area 5 states Odisha, Kerala, Rajasthan, Punjab, KarnatakaWest Bengal, Sikkim, Tripura and Arunachal Pradesh, Mizoram & Assam, Andaman & NicobarHaryana, Madhya Pradesh, PondicherryUttar Pradesh, UttaraKhand, Andhra Pradesh, Telangna, HimanchalPradeshSource: GT ResearchECBC 2017 -SCOPEAPPLICABLE Building SYSTEMS Building Envelope Mechanical systems and equipment, including heating, ventilating, and air conditioning, service hot water heating Interior and exterior lighting Electrical power and motorsEXCEMPTIONS Buildings that do not use either electricity or fossil fuels Equipment and portions of Building systems that use Energy primarily for manufacturing processes Safety, Health and Environmental codes take precedenceCompliance & ApproachMandatory + Prescriptive or WBP Compliance + EPI Ratio +Drawings and SpecificationsThis is done in order to permit the authority having jurisdiction to verify that the Building complies with the requirements of the code.

3 The details should include, but not limited to the following Building ENVELOPE MECHANICAL SYSTEM LIGHTSELECTRICAL POWER ECBC Levels ENERGYEFFICIENCYPERFORMANCELEVEL010203 Energy Conservation BUILDINGCODE COMPLIANT Building Energy Conservation BUILDINGCODE PLUS BUILDINGSUPER Energy Conservation BUILDINGCODE Building ECBC Buildings shall demonstrate compliance by adopting the mandatory and prescriptive requirements or by following the provisions of the Whole Building Performance (WBP) Complianceis done by adopting the mandatory and prescriptive requirements listed under ECBC+ compliant Building requirements or by following the provisions of the Whole Building Performance (WBP) Super ECBC Buildings shall demonstrate compliance by adopting the mandatory and prescriptive requirements listed under Super ECBC Compliant Building requirements or by following the provisions of the Whole Building Performance (WBP) ECBC 2017 BUILDINGCLASSIFICATIOND aytimeUse24-hoursUseHOSPITALITYEDUCATION ALHEALTH CAREStarHotelNoStarHotelResortSHOPPING COMPLEXBUSINESSASSEMBLYC ollegeUniversityInstitutionSchoolHospita lOut-patientHealthcareShoppingMallStand- aloneRetailsOpenGalleryMallsSuperMarkets MultiplexTheatreBuildingusedforTransport ServicesAny one or more Building or part of a Building with commercial use is classified as per the functional requirements of its design , construction, and use Building Types <90%Minimum Energy Performance StandardsProjectLife-CycleBuildingEnvelo peComfortSystems &ControlsLighting &ControlsElectrical Power & RenewableBuilding Envelope Identifies 5 climate zones in India and suggests different Compliance for different zones Hot Dry Warm Humid Composite Temperate ColdCLIMATICZONESOFINDIAThe laws of physics dictate the thermal behavior of a buildingSource.

4 EdgeComposite Climate ZoneThermal RequirementsPhysical ManifestationReduce Heat Gain in Summer and Reduce Heat Loss in (Timelag)ThickerwallsIncreasebufferspace sAirlocks/BalconiesDecreaseairexchangera teWeatherstrippingIncreaseshadingWalls,g lasssurfacesprotectedbyoverhangs,finsand treesIncreasesurfacereflectivityPalecolo r,glazedchinamosaictiles, Heat Loss in MonsoonIncreaseairexchangerate(Ventilati on)Courtyards/windtowers/arrangementofop eningsIncreasehumiditylevelsindrysummerT reesandwaterpondsforevaporativecoolingDe creasehumidityinmonsoonDehumidifiers/des iccantcoolingPsychrometric ChartOptimizing Energy Use for Thermal ComfortBuilding Heat TransferBuilding Heat TransferBuilding Heat Transfer Conductance to heat flow Reciprocal of Thermal Resistance (R) Lower the U-Value the better the performance of insulation Measures heat transfer through the envelope due to a temperature difference between the indoors and outdoors (Unit = W/m K) Building ComponentsEnvelopeLightingComfortPlug loadsRenewableLighting &ControlsBuildingEnvelopeComfortSystems &ControlsAppropriate Orientation & Shading Enhanced Roof, Wall, GlazingDaylightNatural ventilationComfort SystemsElectricalElectrical PowerRenewable Energy Lighting ControlsLighting Power DensityBUILDING ENVELOPE Appropriate Orientation & Shading Enhanced Wall & Roof Insulation Efficient GlazingEnvelope design Considerations ECBC 4 Building Envelope Building Envelope: design ConsiderationsSource: BEEB uilding Envelope: design ConsiderationsSource: BEEB uilding Envelope: design ConsiderationsSource: BEEB uilding Envelope: design ConsiderationsSource: EdgeBuilding Envelope: design ConsiderationsSource.

5 BEECOMPLIANCEMECHANISMROOF ROOF Roofs shall comply with the maximum assembly U-factor The roof insulation shall be applied externally as part of structural slab and not as a part of false & DRYWARM & HUMIDTEMPERATECOLDAll Building types, <10,000 m2 > 10,000 m2 :Table 4-4 Roof Assembly U-factor ( ) Requirements for ECBC Compliant BuildingBuilding Envelope Reduction by 4 -5 Envelope design Considerations ECBC 4 Appropriate Orientation & Shading Enhanced Wall & Roof Insulation Efficient GlazingBuilding Envelope Source: Panache Roofsthatarenotcoveredbysolarphotovoltai c,orsolarhotwater,oranyotherrenewableene rgysystem,shallbeeithercoolroofsorvegeta tedroofs. Forqualifyingasacoolroof,roofswithslopes lessthan20 Solarreflectanceshallbedeterminedinaccor dancewithASTME903-96andemittanceshallbed eterminedinaccordancewithASTME408-71(RA1 996). Forqualifyingasavegetatedroof, ROOFB uilding Envelope 5-10%Reduction by 5 -8 Envelope design Considerations ECBC 4 Appropriate Orientation & Shading Enhanced Wall & Roof Insulation Efficient GlazingBuilding Envelope EnvelopeLightingComfortPlug loadsRenewableEnvelope design Considerations ECBC 4 Appropriate Orientation & Shading Enhanced Wall & Roof Insulation Efficient GlazingBuilding Envelope EnvelopeLightingComfortPlug loadsRenewableSource: EdgeCOMPLIANCEMECHANISMWALL Opaque construction materials and their thermal properties including thermal conductivity, specific heat, density Opaque external walls shall comply with the maximum assembly U-factors ( ) COMPOSITEHOT & DRYWARM & HUMIDTEMPERATECOLDAll Building types except star hotel< 10000 <10000m2 < :Table 4-7 Opaque Assembly Maximum U-factor ( ) requirements for ECBC compliant Building .

6 ECBC ManualWALL Building Envelope Envelope design Considerations ECBC 4 Appropriate Orientation & Shading Enhanced Wall & Roof Insulation Efficient GlazingBuilding Envelope Standardsingleglazed glass offers littleresistanceLow E Insulated glass canreduceheat gain by33%. Building Envelope: design ConsiderationsSource: EdgeDaylighting and Energy Efficient LightingBuilding Envelope EnvelopeLightingComfortPlug loadsRenewableDaylightingBuilding Envelope Using Simulation Tools or Manual CalculationBuilding Envelope 3. FENESTRATION U-value, SHGC and U-value is considered while selecting the fenestration type. Vertical fenestration assembly requirements for ECBC COMPOSITEHOT & DRYWARM & HUMIDTEMPERATECOLDMax. U-factor ( ) SHGC SHGC North for latitude >15 SHGC North for latitude <15 :Table 4-10: Vertical Fenestration Assembly U-factor and SHGC Requirements for ECBC Buildings; ECBC ManualFENESTRATIONS COMPLIANCEMECHANISMECBC Req: Prescriptive (Vertical Fenestration)(a)MaximumallowableWindowWa llRatio(WWR)is40%(applicabletobuildingss howingcomplianceusingthePrescriptiveMeth od,includingBuildingEnvelopeTrade-offMet hod)(b)MinimumallowableVisualLightTransm ittance(VLT) (c)AssemblyU-factorshallbedeterminedfort heoverallfenestrationproduct(includingth eframeandglass)Projection Factor (PF) Theratioofthedistancetheoverhangprojects fromthewindowsurfacetoitsheightabovethes illofthewindowitshades.

7 ProjectionFactorisrequiredtodetermineCoe fficientofshadingFactorOverhang(Horizont al) PF=Height above the sill of the window(Vertical) Building Envelope SKYLIGHT SkylightsshallcomplywiththemaximumU-fact orandmaximumSHGC requirements Skylightroofratio(SRR)islimitedtoamaximu mof5%forECBCB uilding,ECBC+ Building ,andSuperECBCB uilding, U-VALUEMAX. U-VALUEAll climatic :Table 4-15 Skylight U-factor and SHGC Requirements (U-factor in )SKYLIGHT COMPLIANCEMECHANISMD aylighting Horizontal FenestrationBuilding Envelope COMFORT SYSTEMS & CONTROLS Comfort Systems & ControlsEnvelopeLightingComfortPlug loadsRenewableComfort Systems & ControlsEnvelopeLightingComfortPlug loadsRenewableNatural Ventilation: ConsiderationsSource: EdgeComfort Systems & ControlsVENTILLATIONAll heating, ventilation, air conditioning equipment and systems and controls shall comply with the mandatory provisions Allhabitablespacesshallbeventilatedwitho utdoorairinaccordancewiththerequirements ofandguidelinesspecifiedintheNationalBui ldingCode2016(Part8:BuildingServices,Sec tion1:LightingandNaturalVentilation,Subs ection5:Ventilation).

8 Ventilatedspacesshallbeprovidedwithoutdo orairusingoneofthefollowing: Naturalventilation Mechanicalventilation MixedmodeventilationCOMPLIANCEMECHANISMC omfort Systems & ControlsStackEffectWindDrivenThermoSipho nVENTILLATIONAll heating, ventilation, air conditioning equipment and systems and controls shall comply with the mandatory provisionsSource: EdgeComfort Systems & ControlsVentilationStrategiesSource: EdgeComfort Systems & ControlsMINIMUM SPACE CONDITIONING EQUIPMENT EFFICIENCIES Unitary, Split, Packaged Air-Conditioners Variable Refrigerant Flow Chiller Air Conditioning and Condensing Units Serving Computer Rooms Low Cooling Energy Systems PassiveCooling Energy SystemsComfort Systems & ControlsCOMPLIANCEMECHANISMEVAPORATIVECO OLINGVAPOR COMPRESSOR CHILLERSS ource: EdgeComfort Systems & ControlsCOMPLIANCEMECHANISMCHILLEDBEAMSV APOR ABSORPTION MACHINES (VAM)Source: EdgeComfort Systems & ControlsCOMPLIANCEMECHANISMC hillers Chillersshallmeetorexceedtheminimumeffic iencyrequirementspresentedinunderANSI/AH RI550/590conditions.

9 Thenumberofair-cooledchillershallberestr ictedto33%ofthetotalinstalledchilledwate rcapacityunlesstheauthorityhavingjurisdi ctionmandatestheapplicationofaircooledch illers. MinimumefficiencyrequirementsunderBEES tandardsandLabellingProgramforchillerssh alltakeprecedenceovertheminimumrequireme ntsFig. water cooled Chiller Comfort Systems & ControlsCOMPLIANCEMECHANISMECBC BUILDINGECBC + BUILDINGSUPER ECBC BUILDINGC hiller Capacity (kWr)COP IPLVCOPIPLVCOPIPLV< 260 & < 530 &<1,050 1,050 &<1,580 1, : Table 5-1 Minimum Energy Efficiency Requirements for water cooled ChillersWATERCOOLEDC hillers ToshowcompliancetoECBC, +BuildingandSuperECBCB uilding, Systems & ControlsCOMPLIANCEMECHANISMUNITARYSPLITPACKAGESAIRCONDITIONERS Unitaryair-conditionersshallmeetorexceedtheefficiencyrequirements. WindowandsplitairconditionersshallbecertifiedunderBEE sStarLabelingProgram. EERshallbeasperIS8148forallunitary,split,packagedairconditionersgreaterthan10kWrCOOLING CAPACITY (kWr)WATER COOLEDAIR COOLED BEE 3 Star> EERCOOLING CAPACITY (kWr)WATER COOLEDAIR COOLED BEE 4 Star> EERS ource: Table 5-3 Minimum Requirements for Unitary, Split, Packaged Air Conditioners in ECBC BuildingSource.

10 Table 5-4 Minimum Requirements for Unitary, Split, Packaged Air Conditioners in ECBC+BuildingSinglepackageSplitsystemInd oorsectionComfort Systems & ControlsCOMPLIANCEMECHANISMVARIABLEREFRI GERANTFLOW Generallyinstalledforareaslessthan1lakhs qft variable refrigerant flow HEATING OR COOLING OR BOTH TYPESIZE CATEGORY(kWr) EERIEERVRF AirConditioners,Air cooled< 40 >= 40 and < >= Systems & ControlsCOMPLIANCEMECHANISMM echanical cooling and heating systems in Universitiesand Training Institutions of all sizes and all Shopping Complexeswith built up area greater than 20,000 m shall be controlled by time clocks that:a)Can start and stop the system under different schedules for at least three different day-types per week,b)Are capable of retaining programming and time setting during loss of power for a period of at least 10 hours, andc)Include an accessible manual override that allows temporary operation of the system for up to 2 to :(a)Cooling systems less than kWr(b)Heating systems less than kWr(c)Unitary systems of all capacitiesTIMECLOCKC omfort Systems & ControlsCOMPLIANCEMECHANISMTEMPERATURECO NTROLS.