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Indoor Air Quality. Lee Jung-Hyun 2200937. Department of Civil and Environmental System Engineering University of Incheon, South Korea. Contents. Introduction Importance of indoor air quality Study purpose Main subject Indoor air pollutant and pollution source - PowerPoint PPT Presentation
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12 June 200612 June 2006 Term Project 2006Term Project 200611/14/14
Indoor Air QualityIndoor Air Quality
Lee Jung-Hyun
2200937
Department of Civil and Environmental System Engineering
University of Incheon, South Korea
12 June 200612 June 2006 Term Project 2006Term Project 200622/14/14
ContentsContents IntroductionIntroduction Importance of indoor air qualityImportance of indoor air quality Study purposeStudy purpose
Main subjectMain subject
Indoor air pollutant and pollution Indoor air pollutant and pollution source source
Effect of Indoor air pollutant Effect of Indoor air pollutant Factors Influencing indoor air quality Factors Influencing indoor air quality
ConclusionConclusion For improving indoor air qualityFor improving indoor air quality
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Study purposeStudy purpose Introduction to Indoor AIndoor Air ir
pollutant pollutant and pollution sourceand pollution source
Application box model
-Relation among factors
-How to improve air quality
How influence indoor air pollution to human?
12 June 200612 June 2006 Term Project 2006Term Project 2006
Definition Definition
It is defined as the amount of pollutant or contaminations on the
indoor air.
Gases or particulate matter harmful to human and nature is called
pollutant.
Indoor air quality degraded by ourselves directly or indirectly.
It reduces by many factors such as smoking, dust, mites, mold spores, smoking, dust, mites, mold spores,
radon, and gases and chemicals from materials and appliances.radon, and gases and chemicals from materials and appliances.
What is indoor air quality?
12 June 200612 June 2006 Term Project 2006Term Project 200655/14/14
Sources of indoor air pollutionSources of indoor air pollution
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pollutantpollutant SourceSource
Combustion gases-CO,NOCombustion gases-CO,NO Combustion-furnace, cooking stove, Combustion-furnace, cooking stove, space heater, etc.space heater, etc.
Volatile organic compounds(VOCs)Volatile organic compounds(VOCs) Outgassing of building materials, coatings, wall and Outgassing of building materials, coatings, wall and floor coverings, and furnishingsfloor coverings, and furnishings
FomaldehydeFomaldehyde Outgassing of pressed wood, insulation foamOutgassing of pressed wood, insulation foam
ozeonozeon Duplicator, Air cleaner Duplicator, Air cleaner
Biological agents-molds, Biological agents-molds, spores, dangerspores, danger
Contaminated ventilation systems, petsContaminated ventilation systems, pets
Environmental tobacco Environmental tobacco smokesmoke
Smoking in buildingSmoking in building
RadonRadon Infiltration from soil beneath structureInfiltration from soil beneath structure
Particulate matterParticulate matter CombustionCombustion
AsbestosAsbestos Construction coatings, tile, insulationConstruction coatings, tile, insulation
Indoor Air Pollutants and Typical Indoor Air Pollutants and Typical sourcessources
12 June 200612 June 2006 Term Project 2006Term Project 200677/14/14
Importance of indoor air Importance of indoor air qualityquality
Cognizance about Importance of indoor air quality .
Dilution rates of atmospheric pollution
Dilution rates of indoor air pollution
We spend about 90% of our time indoors in our homes, cars, offices, factories, public buildings such as restaurants, malls, and others.
Without proper ventilation, increase concentration
Negative influence on human
12 June 200612 June 2006 Term Project 2006Term Project 200688/14/14
PollutantPollutant EffectEffect
Combustion gases-Combustion gases-CO,NOCO,NO
Headache, vertigo, emesis, lung Headache, vertigo, emesis, lung disease disease
Volatile organic compounds (VVolatile organic compounds (VOCs)OCs)
the production of cancerthe production of cancer
FormaldehydeFormaldehyde skin stimulus ,lung cancerskin stimulus ,lung cancer
ozoneozone stimulus on the respiratory organs , stimulus on the respiratory organs , exhaustion exhaustion
Biological agents-Biological agents-molds, spores, dangermolds, spores, danger
allergic disease, respiratory diseaseallergic disease, respiratory disease
Environmental tobacco Environmental tobacco smokesmoke
Anxiousness, lung disease, lung Anxiousness, lung disease, lung cancercancer
RadonRadon lung cancerlung cancer
Particulate matterParticulate matter stimulus on the respiratory organs stimulus on the respiratory organs and mucous membrane, the and mucous membrane, the
production of cancerproduction of cancer
AsbestosAsbestos skin stimulus ,lung cancerskin stimulus ,lung cancer
Effect of Indoor air pollutantEffect of Indoor air pollutant
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(A), exchange (B), indoor concentration
(C), outgassing of building and furniture materials
(D), infiltration from soils (E), removal on interior surfaces
Factors Influencing indoor air qualityFactors Influencing indoor air quality(application box model)(application box model)
12 June 200612 June 2006 Term Project 2006Term Project 20061010/14/14
What is box model?What is box model?
S
Q1
C1
Q2
C2
Optional Value Substitution !
IN - OUT + SOURCE
= ACCMULATION
0 100 2004
6
8
10
12
f t( )
t
Suppose : f(t)=C 3
3
31
3
100
sec/0.10
/10
/5
mV
mQ
mugC
mugCi
)1(*/)(* /1
/ VQtVQti eQCSeCC
12 June 200612 June 2006 Term Project 2006Term Project 20061111/14/14
0 100 2004
6
8
10
12
10.1
5.485
f t( )
2001 t
0 100 2004
6
8
10
12
10.1
5.924
f t( )
2001 t
0 100 2004
6
8
10
12
10.1
5.485
f t( )
2001 t
0 100 2005
5.05
5.1
5.1
5.01
f t( )
2001 t
0 100 2004
6
8
10
12
10.1
5.485
f t( )
2001 t
Q Q/2
V V/2
C C/2
0 100 2005
5.05
5.1
5.1
5.005
f t( )
2001 t
12 June 200612 June 2006 Term Project 2006Term Project 20061212/14/14
ResultResult
(V) is not related to (C) , but inverse proportion with Diffusion Velocity
Q ∝ C
C ∝ C
12 June 200612 June 2006 Term Project 2006Term Project 20061313/14/14
ConclusionConclusion
Proper ventilation is important for indoor air quality.
Reduction of the pollutant source reduces the
concentration of pollution to indoor air.
Different types of pollutant have different level of harm
to human health.
The increase of pollution level like smog and particle in
indoor air cause direct health effect and can reduce
easily than others like VOC’s
12 June 200612 June 2006 Term Project 2006Term Project 20061414/14/14
Thank you for Thank you for attending attending presentationpresentation ……
짝짝짝 !…
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