Indoor air quality
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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

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Indoor Air Quality

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Indoor air quality

Indoor Air Quality

Lee Jung-Hyun

2200937

Department of Civil and Environmental System Engineering

University of Incheon, South Korea


Contents

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


Study purpose

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


Indoor air quality

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.


Indoor air quality

Indoor pollution


Indoor air quality

Indoor Air Pollutants and Typical sources


Importance of indoor air quality

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


Indoor air quality

Effect of Indoor air pollutant


Indoor air quality

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


What is box model

What is box model?

V

C

Q2

C2

IN - OUT + SOURCE

= ACCMULATION

Q1

C1

S

Optional Value Substitution !

Suppose : f(t)=C


Indoor air quality

V

Q

C

V/2

Q/2

C/2


Indoor air quality

Result

(V) is not related to (C)

, but inverse proportion with Diffusion Velocity

Q ∝ C

C ∝ C


Conclusion

Conclusion

  • How to improve Indoor Air Quality

    Increase amount of ventilation(Q)

    Decrease pollution Concentration


Indoor air quality

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