ventilation)for)spf)contractors - spray foam€¦ · infiltration*doesn’t*cut*it attic insulation...
TRANSCRIPT
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Ventilation)for)SPF)ContractorsAllison)A.)Bailes)III,)PhD
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1. the&provision&of&fresh&air&to&a&room,&building,&etc.
2. public&discussion&or&examination&of&an&opinion,&issue,&complaint,&etc.
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When%Should%You%Ventilate?
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1.#During#a#spray#foam#job
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2.#After#the#spraying#is#finished
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3.#After#occupancy
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Why$We$Need$Ventilation
Airtight$enclosures
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Infiltration*Doesn’t*Cut*ItATTIC
Insulation fibers,
dust, rodent poop
CRAWLSPACE
Mold, dust, lead, radon,
moisture, termiticide
OUTSIDE
Pollen, auto
fumes, dust
GARAGE
Carbon monoxide,
pesticides, gasoline,
fertilizers
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Bad$Stuff$in$the$Air
CO2
VOCsFormaldehydeNOx
Radon…and$more!
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3"Ways"to"Achieve"Good"IAQ
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1.#Source#control
Keep$it$out!
14/212
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“If$there$is$a$pile$of$manure$in$a$space,$do$not$try$to$remove$the$odor$by$
ventilation.$Remove$the$pile$of$manure.”
~$Max$von$Pettenkofer,$1858$
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Separate!
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2.#Ventilation
Dilute'the'contaminants!
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3.#Filtration
Remove&the&contaminants!
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Build&TightVentilate&Right
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Choosing(a(Residential(Ventilation(Method(
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3"Types"of"People
1. Those"who"can"do"math
2. and"those"who"can’t.
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3 Types'of'Ventilation
1. Whole'house2. Local3. Buffer'space
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3 Types'of'Ventilation
1. Whole'house2. Local3. Buffer'space
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Local&Ventilation
Bathrooms
Kitchens
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Buffer&Space&Ventilation
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Radon
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Crawl&Space&Ventilation
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Garage
GarageVentaircycler.com
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Attic Ventilation
29/42
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Step%1
Choose%a%Ventilation%Method
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Supply&Only)Ventilation
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Central(Fan(Integrated(Supply((CFIS)
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CFIS%Controllers
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Ventilating)Dehumidifier
Ultra2Aire
ultra2aire.comUltra2Aire
ultra2aire.com
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Supply&Fans
37/520
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Balanced(Ventilation
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Whole&House Ventilation
Balanced
• HRV• ERV• Balanced&
without&recovery
Who looks at slide numbers anyway?
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ERV$&$HRV$Operation
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ERV$&$HRV$Operation
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Lunos
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Exhaust(Only-Ventilation
43/999
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Range&Hoods&&&Bath&Fans&With&Controls
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Step%2
Choose%a%Ventilation%Rate
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How$Much$to$Ventilate?
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62.2$Ventilation$Rates
62.2$2010 Qv =$0.01$Afloor +$7.5$(Nbr +$1)
62.2$2013 Qv =$0.03$Afloor +$7.5$(Nbr +$1)
Afloor =$cond.$floor$area,$$Nbr =$#$of$bedrooms
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www.residentialenergydynamics.com
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BSC$01'Ventilation'Rates
BSC$01 Qv ='0.01'Afloor +'7.5'(Nbr +'1)
Afloor ='cond.'floor'area,''Nbr ='#'of'bedrooms
BSC'='Building'Science'Corp.buildingscience.com
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But$wait…there’s$more!
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BSC$01'Ventilation'Rates
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Real%Numbers
• 2,000%sf,%3%bedroom%house• 3%BR%! 4%people
Method Rate)(cfm)62.292010 50%62.292013 90BSC901 50,%63,%or%75%(w/o mixing)
38,%47,%or%56%(w/%mixing)
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Is#it#possible#to#ventilate#too#much?
• Comfort• Humidity• Energy#consumption• System#effectiveness• Lack#of#data#on#health#impacts
54/???
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Where%Do%These%Rates%Come%From?
• Odor%control%– 15%cfm/person,%C.P.%
Yaglou research,%1936
• 0.35%ACH%for%residential%since%62J1989
– ‘expert%judgment,’%not%health%data
• Long%history,%mostly%commercial%and%
institutional
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Step%3
Commission%&%Maintain%the%System
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Commissioning
• Measure-the-air-flow-at-intakes-and-exhausts
• Make-sure-the-controls-work
• Look-for-correct-installation
57/some-ungodly-number
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Maintenance
Filters
Only.33.more.slides
![Page 59: Ventilation)for)SPF)Contractors - Spray Foam€¦ · Infiltration*Doesn’t*Cut*It ATTIC Insulation fibers, dust, rodent poop CRAWLSPACE Mold, dust, lead, radon, moisture, termiticide](https://reader034.vdocuments.us/reader034/viewer/2022050215/5f60ad2e4362c826871b7c59/html5/thumbnails/59.jpg)
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![Page 60: Ventilation)for)SPF)Contractors - Spray Foam€¦ · Infiltration*Doesn’t*Cut*It ATTIC Insulation fibers, dust, rodent poop CRAWLSPACE Mold, dust, lead, radon, moisture, termiticide](https://reader034.vdocuments.us/reader034/viewer/2022050215/5f60ad2e4362c826871b7c59/html5/thumbnails/60.jpg)
Ventilation)Guideby)Armin)Rudd
![Page 61: Ventilation)for)SPF)Contractors - Spray Foam€¦ · Infiltration*Doesn’t*Cut*It ATTIC Insulation fibers, dust, rodent poop CRAWLSPACE Mold, dust, lead, radon, moisture, termiticide](https://reader034.vdocuments.us/reader034/viewer/2022050215/5f60ad2e4362c826871b7c59/html5/thumbnails/61.jpg)
Residential*Ventilation*Handbookby*Paul*Raymer
![Page 62: Ventilation)for)SPF)Contractors - Spray Foam€¦ · Infiltration*Doesn’t*Cut*It ATTIC Insulation fibers, dust, rodent poop CRAWLSPACE Mold, dust, lead, radon, moisture, termiticide](https://reader034.vdocuments.us/reader034/viewer/2022050215/5f60ad2e4362c826871b7c59/html5/thumbnails/62.jpg)