Builder2.0
trainingandeduca,ngthenextgenera,onofconstruc,on
professionals.
Today’slearningobjec7ves:• Explorebuildingscienceprinciples• Examineenergyasitrelatestobuildings• Examinedurabilityinbuildingsystems• Iden,fycommonenergymodelingtools• Understandtheimportanceoftes,ng• Explorethebenefitsofverifyingbuildingperformance• Iden,fythechallengesofincorpora,ngbuildingscienceprinciplesintothecommunityofbuilders
• Explaintheimportanceofanintegratedteamapproachtobuildingprojects
BuildingScience101
• Awakenthesensestoenergy!– Energydiary—howandwheredoweuseenergy?
– EnergyandtheCity,interviewbyNa7onalPublicRadio
– IRcamerasdayone!
BuildingScience101
• Thermodynamics– Hotmovestocold
• Moistureproper7es– Wetmovestodry– Moistureinliquidandvaporform
• Structuralproper7es• Weatherimpacts
BuildingScience101
• Building=Environmentalseparator
• Exteriorcondi7onsvarygreatly
• Interiorcondi7onsshouldbecomfortable
• Challengesabound!
BuildingScience101• Fourimportantdurability
factors:– Air7ghtness– Thermalperformance– Watervapormanagement– Bulkwatermanagement
• Ul7mategoals:– Comfort,durability,affordability
– Not“green,”rathergooddesignandbestbuildingprac,ces
EnergyinBuildings
• Energysources– Typicallyfossilfuelbased– Electricityandnaturalgas– Wheredoesthefuelcomefrom?
– Renewable,notastypical,butgeYngthere
• Energycosts– Naturalgasisinexpensive– Electricityisexpensive
JustoutsideGillete,WY
Zoomoutview!Nearlytwomileslong!!!
Zoomoutview!Oneofmany!!
EnergyinBuildings
• Siteconsump7on– Howmuchenergyisconsumed?
• Audits– Whereisenergyconsumed?
• Analysis– Whyistheenergyconsumed?
EnergyinBuildings• Normalizedperformance
indicators– Energyuseintensity– Accountsfordifferencesinclimate,size,occupancy,etc…
• Residen7al– WI:103MMBTU/year– MN:113MMBTU/year
• Commercial– Variesbasedonindustry– www.eia.gov
EnergyinBuildings
EnergyinBuildings
• Energyreduc7onstrategies
• Envelopeimprovements
• Ligh7ng• Appliances• Hea7ng/coolingequipment
• Behavior
Durability
• Howwillourbuildingsholdup?
• hfps://www.youtube.com/watch?v=5NvDhNZNSBk
• Factorsaffec7ngdurability:– Water—liquidandvapor– Thermalperformance– Air7ghtness
Durability—watermanagement• Watervapor
– Winter:HighindoorRHcomparedtooutside(extended7me)
– Summer:HighoutdoorRHcomparedtocondi7onedinterior(notverylong)
– Fall/spring:varies,butratherneutral
• Vaporopenassemblies• Manageindoorair
Durability—watermanagement• Liquidwatersources:
– Weather– Domes7cwatersupply– Fromabove,thesideandbelow!
• ManagingLiquidwater– Flashproperly– welldefineddrainageplanes—withappropriatematerials
– Drain7le/sump
EnergyModeling
• REMrate• PHPP/WUFIpassive• ManualJ• REScheck• Beopt• eQuest
EnergyModeling• Requiresexcellentfield
datacollec7onand/ordetailedconstruc7ondocuments
• Heatloss/gain– Conduc7velosses– Infiltra7onlosses– Solargains/internalgains
• Plug/applianceloads• Ligh7ng• Hotwater
EnergyModeling• Requiresexcellentfield
datacollec7onand/ordetailedconstruc7ondocuments
• Heatloss/gain– Conduc7velosses– Infiltra7onlosses– Solargains/internalgains
• Plug/applianceloads• Ligh7ng• Hotwater
Buildingperformancetes7ng• Air7ghtnesstes7ng
– ACH50forresiden7al– ACH75forcommercial– Insistonair7ghtnessgoalsearly(welike1ACH50or7ghter)
• Airinfiltra7onisadurabilityconcern—moisturetravelswiththeair,geYngintoourenvelopeassemblies.
Buildingperformancetes7ng• Pre-test
– Doneoncetheair7ghtlayersareinstalledandbeforetheyarecoveredup
– Airsealwhilerunningtheblowerdoor
– Airsealbeyondyourair7ghtnesstarget
• Post-test– Anerthepre-test—assureallpenetra7onsaresealed
– Toughtoimprovethenumbers
Buildingperformancetes7ng
Buildingperformancetes7ng
• Bigbuildingscanbenefit,too
• Establishair7ghtnessgoal
• Findinfiltra7onpoints• Airsealandretest• Adjusthea7ng,coolingandven7la7on
Verifica7onofbuildingperformance
• Followupaudit• Monitoring• Re-commissionequipment,ifnecessary
• Comparemodeledperformancetoactual
• Addtothedatabaseofresearch!
Buildingscienceintheindustry• Educa7on
– Highschools—construc7onacademies
– Twoyearprograms– Fouryearprograms
• Residen7albuilding– Buildersassocia7ons– Contractors– Lenders
• Commercialbuilding
Integratedteamapproach
• Western’sCenterforBuildingInnova7on
• ArchitecturalTechnology
• BuildingSystemsTechnology
• HVAC/R• WoodTech• LandscapeHor7culture
Integratedteamapproach• Workingin
interdisciplinaryteams• Various,butregularlevels
ofinvolvementthroughoutproject
• Engagedfrompre-designthroughthefinalwalkthrough
• Contractors,designers,clients,andbuildingperformance
Ques7ons?• Thankyou• JoshuaVandeBerg
– BuildingSystemsTechnology– WesternTechnicalCollege– [email protected]– 608-785-9103office