FinIndoor Environmental Quality.docx

FinIndoor Environmental Quality.docx

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FinIndoorEnvironmentalQuality

INDOORENVIRONMENTALQUALITY

Intent

Requirements

PotentialTechnologies&Strategies

SummaryofReferencedStandard

ApproachandImplementation

Calculation

ExemplaryPerformance

SubmittalDocumentation

EQP1:

MinimumIAQPerformance

Establishminimumindoorairquality（IAQ）performancetoenhanceindoorairqualityinbuildings,thuscontributingtothecomfortandwell-beingoftheoccupants

1）MeettheminimumrequirementsofSection4~7ofASHRAE62.1-2004,VentilationforAcceptableIndoorAirQuality

2）MechanicalventilationsystemsshallbedesignedusingtheVentilationRateProcedureortheapplicablelocalcode,whicheverismorestringent

3）NaturallyventilatedbuildingsshallcomplywithASHRAE62.4-2004,paragraph5.1

1）Designventilationsystems>=theminimumoutdoorairratesofASHRAE62.2-2004

2）Balancetheimpactsofventilationratesonenergyuseandindoorairqualitytooptimizeforenergyefficiencyandoccupanthealth

3）UsetheASHRAE62UsersManualfordetailedguidanceonmeetingthereferencesrequirements

ASHRAEStandard62.1-2004:

VentilationforAcceptableIndoorAirQuality

1）Specifyminimumventilationrates&IAQthatwillbeacceptabletohumanoccupants

2）Tominimizethepotentialforadversehealtheffects

3）Appliestoallindoororenclosedspacesthatpeoplemayoccupy,exceptwhereotherapplicablestandards&requirementsdictatelargeramountsofventilationthanStd.62.1

4）Releaseofmoistureinresidentialkitchens&bathrooms,lockerrooms,andswimmingpoolsisincludedinthescopeofthisstandard

5）Additionalrequirementsforlaboratory,industrial,andotherspacesmaybedictatedbyworkplaceandotherstandards,aswellasbytheprocessoccurringwithinthespace

6）Considerschemical,physical,andbiologicalcontaminantsthatcanaffectairquality

7）ThermalcomfortrequirementsareNOTincludedinstd.62.1

8）Std.62.4istherelevantstandardforthevastmajorityofprojects,certainlow-riseresidentialprojectspursuingcertificationunderLEEDforNCmayuseStd.62.2

1）Buildingmechanical&passiveventilationsystemsseektoensurethatadequatefreshairisavailableforoccupantsinthespace

2）Std.62.1-2004establishesminimumrequirementsfortheventilationairratesinvarioustypesofoccupiedzones&buildingventilationsystems

3）Thestandardtakesbelowitemsintoaccount

a）Thedensityofpeoplewithinanarea

b）Thetypeofactivitythatisexpectedtooccurinthespace

c）Thenatureoftheventilationairdeliverysystem

Strategies

ActiveVentilation:

MechanicallyVentilatedSpaces—VentilationRateProcedure

1）ASHRAEStandard62.1-2004,Section6:

presentsproceduresfordeterminingtheminimumrequiredventilationratesforvariousapplications,usingeithertheVentilationRateProcedureortheIndoorAirQualityProcedure

2）TheVentilationRateProcedureis:

a）Morestraightforwardtoapplyand

b）Muchmorecommoninpracticeand

c）IstheprescribedapproachrequiredbyEQPrerequisite1

c）Breathingzoneoutdoorairflow=

Sum[outdoorairflowraterequiredperperson]xZonepopulation+OutdoorairflowraterequiredperunitareaxZonefloorarea

3）Std.62.1Table6-1“MinimumVentilationRatesinBreathingZone”

a）providesinformationbyoccupancycategorytodetermineboththeamountofoutdoorairneededtoventilatedpeople-relatedsourcecontaminants&area-relatedsourcecontaminants

b）people-relatedsource:

--addressesactualoccupancydensityandactivity

c）area-relatedsource:

--accountsforbackgroundoff-gaddingfrombuildingmaterials,furniture&materialstypicallyfoundinthatparticularoccupancy

d）therequiredzoneoutdoorairflow:

--isthebreathingzoneoutdoorairflowadjustedtoreflectthe“zoneairdistributioneffectiveness”usingadjustmentfactorsinTable6-2

4）Formultiple-zonesystems,outdoorairintakeflowisadjustedtoreflectthe“systemventilationefficiency”oftheairdistributionconfiguration,usingadjustmentfactorsinTable6-3

5）RequiredapplicantsdemonstratethatthedeliveredminimumzoneoutdoorairflowforeachzoneandtheoutdoorairintakeflowforthesystemmeetsorexceedsthatrequiredbyASHRAE62.1-2004foreachzone

PassiveVentilation--NaturallyVentilatedPaces

1）Section5.1providesrequirementsonthelocation&sizeofventilationopeningsfornaturallyventilationbuildings

2）Requiresthatallnaturallyventilatedspacesshallbepermanentlyopentoandwithin25feetofoperablewallorroofopeningsand

3）Theoperablearea>=4%ofthenetoccupiablefloorarea

4）Allothernon-ventilation-relatedrequirementsinthestandardmustbemettocomplywiththisprerequisite

3）Mixed-modeVentilatedSpaces

1）NeedtomeettheminimumventilationratesrequiredbyChapter6ofStd.62.1regardlessofventilationmode

CALCULATION

N/A

N/A

DSubmittal

1）Designnarrativedescribingtheproject’sventilationdesign.Includespecificinformationregardingfreshairintakevolumesandanyspecialconditionsthataffectedtheproject’sventilationdesign

AND

2）ForMechanicalVentilationBuildings:

a）ConfirmationthattheprojecthasbeendesignedtomeettheminimumrequirementsofASHRAE62.1-2004

b）VentilationforAcceptableIndoorAirQuality,usingtheVentilationRateProcedure.

OR

3）ForNaturalVentilationBuildings:

a）Confirmationthattheprojecthasbeendesignedtocomplywiththerequirementsforlocation&sizeofwindowopeningsperSection5.1

b）Provideapplicableprojectdrawingstoshowthenaturallyventilatedbuildingzones&theoperablewindowareas

EQP2:

EnvironmentalTobaccoSmoke（ETS）Control

Minimizeexposureofbuildingoccupants,indoorsurfaces,andventilationairdistributionsystemstoETS

Option1—NoSmoking

1）Prohibitsmokinginthebuilding

2）Exteriordesignationsmokingareas>=25feetawayfromentries,outdoorairintakesandoperablewindows

Option2—DesignatedInteriorSmokingArea

1）Prohibitsmokinginthebuildingexceptindesignatedsmokingareas

2）Exteriordesignationsmokingareasatleast25feetawayfromentries,outdoorairintakesandoperablewindows

3）Locatedesignationsmokingroomstoeffectivelycontain,capture&removeETSfromthebuilding

a）Mustbedirectlyexhaustedtotheoutdoorswithnore-circulationairtothenon-smokingareaofthebuilding

b）Enclosedwithimpermeabledeck-to-deckpartitions

c）Createanegativepressurewithrespecttotheadjacentspacesofatleastanaverageof5Pa（0.02inchesofwatergauge）andwithaminimumof1Pa

d）Performanceofthesmokingroomshallbeverifiedbyconducting15minutesofmeasurement,withaminimumof1measurementevery10seconds

4）Thetestingwillbeconductedwitheachspaceconfiguredforworstcaseconditionsoftransportofair

Option3（ForResidentialBuildingsOnly）

1）Prohibitsmokinginallcommonareasofthebuilding

2）Exteriordesignationsmokingareasatleast25feetawayfromentries,outdoorairintakesandoperablewindows

3）MinimizeuncontrolledpathwaysforETStransferbetweenindividualresidentialunitsby:

a）Sealingpenetrationsinwalls

b）Ceilingsandfloorsintheresidentialunits

c）Sealingverticalchasesadjacenttotheunits

4）Alldoorsleadingtocommonhallwaysshallbeweather-strippedtominimizeairleakageinthehallway

1）Prohibitsmokingincommercialbuildings

2）Effectivelycontroltheventilationairinsmokingrooms

3）Prohibitsmokinginresidentialbuilding’scommonarea,designbuildingenvelope&systemtominimizeETStransferamongdwellingunits

ANSI/ASTM-E779-03,StandardTestMethodforDeterminingAirLeakageRateByFanPressurization

1）Coversastandardizedtechniqueformeasuringair-leakageratesthroughabuildingenvelopeundercontrolledpressurization&de-pressurization

2）Intendstoproduceameasureofairtightnessofabuildingenvelope

ResidentialManualforCompliancewithCalifornia’s2001EnergyEfficiencyStandards（ForLowRiseResidentialBuildings）,Chapter4

1）RequirequalitydesignandconstructionofHVACsystem&airdistributionsystems

2）Offercompliancecreditfortheconstructionoflessleakybuildingenvelopes

3）Requireinstallerdiagnostictesting&certification,andindependentdiagnostictestingandfieldverificationbyacertifiedHomeEnergyRater

1）Prohibitsmokinginthebuilding

2）Providedesignatedsmokingareas

a）OutsideofthebuildinginlocationswhereETSwillnotenterthebuildingorventilationsystem

b）Belocatedawayfromconcentrationsofbuildingoccupantsorpedestriantraffic

1）Interiorsmokingareas

a）Separateventilationsystemmustbeinstalled

b）Effectivenessmustbetestedtoensurethattheyareisolatedfromthenon-smokingportionsofthebuilding

N/A

N/A

DSubmittal

1）Confirmationthattheprojecthasmettherequirementsfortheappropriateprojectcategory

2）Forbuildingswithinteriorsmokingroomsorforresidentialprojects:

Provideappropriatecopiesofconstructiondrawingstodocumentthelocationofthesmokingrooms,designedareaseparations,anddedicatedventilationsystems

3）Provideoptionalnarrativetofurtherdescribethetestingprotocols/results&compliancemethodsimplementedbyproject

EQC1:

OutdoorAirDeliveryMonitoring

Providecapacityforventilationsystemmonitoringtohelpsustainoccupantcomfortandwell-being

1）Installpermanentmonitoringsystemthatprovidefeedbackonventilationsystemperformance

2）Configureallmonitoringequipmenttogeneratedanalarmwhentheconditionsvaryby10%ormoreforsetpoint,via

a）Buildingautomationsystemalarmtothebuildingoperator

b）Visualoraudiblealerttothebuildingoccupants

ForMechanicallyVentilatedSpaces

1）MonitorCO2concentrationswithinalldenselyoccupiedspaces

a）Withadesignoccupantde