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Indoor Air Quality

Indoor Air Quality

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Indoor Air Quality

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  1. Indoor Air Quality Lee Jung-Hyun 2200937 Department of Civil and Environmental System Engineering University of Incheon, South Korea

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

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

  4. What is indoor air quality? 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.

  5. Indoor pollution

  6. Indoor Air Pollutants and Typical sources

  7. Importance of indoor air quality Cognizance about Importance of indoor air quality . We spend about 90% of our time indoors in our homes, cars, offices, factories, public buildings such as restaurants, malls, and others. Dilution rates of atmospheric pollution Dilution rates of indoor air pollution Without proper ventilation, increase concentration Negative influence on human

  8. Effect of Indoor air pollutant

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

  10. What is box model? V C Q2 C2 IN - OUT + SOURCE = ACCMULATION Q1 C1 S Optional Value Substitution ! Suppose : f(t)=C

  11. V Q C V/2 Q/2 C/2

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

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

  14. Thank you for attending presentation… 짝짝짝!…