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KMID : 1171820090240030016
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Journal of Environmental and Sanitary Engineering
2009 Volume.24 No. 3 p.16 ~ p.27
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A study on the Behavior of Fine Particle used the HEPA Filer
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Kim Won-Gang
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Abstract
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In this paper, I examined the level of fine dust in medical institutions, educational institutions and multi-purposed facilities to grasp the exact state of the present, and decided the level of air-borne particulate(KSM ISO Standard and ISO Standard 14644-1).
We compared new proposed cleaner equipped with HEPA Filter with general cleaner and analyzed the rate of removal according to height, air volume and the equipment with the compulsive air intake. Through this comparison, I reached the conclusion as follows:
1. According to the examination, the fine dust of medical institutions, educational institutions and multi-purposed facilities in Kwang Ju is class 9.
2. The filter used in general cleaner on the market is that of HEPA-type, and its removal efficiency for fine particles(0.3~0.5㎛) is very low.
3. In the removal efficiency of new proposed cleaner equipped with HEPA Filter, the higher it is, the better, especially more than 180㎝ in height.
4. In case it is operated for 5 minutes under the condition of the space of 9.4㎥ and the maximum air volume equipped with two induction pipes, we can keep the air cleanness level of 5 ～ 6.
5. To maintain the air cleanness for a long time, if we first operate for 5 minutes at maximum air volume and then operate at medium maximum air volume, we can keep the air cleanness with low energy.
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KEYWORD
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HEPA Filter, clean room
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