Indoor Air Quality Lee Jung-Hyun Department of Civil and Environmental System Engineering University of Incheon, South Korea

Contents Introduction Introduction Importance of indoor air quality Importance of indoor air quality Study purpose Study purpose Main subject Main subject Indoor air pollutant and pollution source Indoor air pollutant and pollution source Effect of Indoor air pollutant Effect of Indoor air pollutant Factors Influencing indoor air quality Factors Influencing indoor air quality Conclusion Conclusion For improving indoor air quality For improving indoor air quality

Study purpose Indoor Air pollutant Introduction to Indoor Air pollutant and pollution source Application box model -Relation among factors -How to improve air quality How influence indoor air pollution to human?

Definition Definition The condition of the air inside buildings, including the extent of pollution caused by smoking, dust, mites, mold spores, radon, and gases and chemicals from materials and appliances. The condition of the air inside buildings, including the extent of pollution caused by smoking, dust, mites, mold spores, radon, and gases and chemicals from materials and appliances. What is indoor air quality?

Indoor pollution

pollutantSource Combustion gases-CO,NO Combustion-furnace, cooking stove, space heater, etc. Volatile organic compounds(VOCs) Outgassing of building materials, coatings, wall and floor coverings, and furnishings Fomaldehyde Outgassing of pressed wood, insulation foam ozeon Duplicator, Air cleaner Biological agents-molds, spores, danger Contaminated ventilation systems, pets Environmental tobacco smoke Smoking in building Radon Infiltration from soil beneath structure Particulate matter Combustion Combustion Asbestos Construction coatings, tile, insulation Indoor Air Pollutants and Typical sources

Importance of indoor air quality 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

PollutantEffect Combustion gases-CO,NO Headache, vertigo, emesis, lung disease Volatile organic compounds(VOCs) the production of cancer Fomaldehyde skin stimulus,lung cancer ozeon stimulus on the respiratory organs, exhaustion Biological agents-molds, spores, danger allergic disease, respiratory disease Environmental tobacco smoke Anxiousness, lung disease, lung cancer Radon lung cancer Particulate matter stimulus on the respiratory organs and mucous membrane, the production of cancer stimulus on the respiratory organs and mucous membrane, the production of cancer Asbestos skin stimulus,lung cancer Effect of Indoor air pollutant

(A), exchange (B), indoor concentration (C), outgassing of building and furniture materials (D), infiltration from soils (E), removal on interior surfaces Factors on Influencing indoor air quality (application box model)

What is box model? S Q1C1Q1C1 Q2C2Q2C2 Optional Value Substitution ! IN - OUT + SOURCE = ACCMULATION Suppose : f(t)=C VCVC

VV/2 QQ/2 CC/2

Result (V) is not related to (C), but inverse proportion with Diffusion Velocity Q ∝ C C ∝ C

How to improve Indoor Air Quality How to improve Indoor Air Quality Increase amount of ventilation(Q) Decrease pollution Concentration Conclusion

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