• Air Cleaning Technology
• /
• v.2 no.1 s.5
• /
• pp.16-28
• /
• 1989

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.17 no.4
• /
• pp.418-425
• /
• 1988

Since conventional computer program is workable only with velocity boundary condition, in practical fluid passage such as clean room which usually have wide inlets and outlets, it is not easy to measure velocity itself because of its vector property. Furthermore a certain assumption of velocity at boundaries may lead to physically unreasonable results. From this motivation, we have developed a computer program to predict whole flow field imposed on pressure-based boundary condition which can be measured by relatively simple method. The only additional velocity boundary condition that should be imposed on to make the problem unique, are no slip condition at all walls and zero cross stream velocity at inlet. The result of present study was compared with that by Bernoulli equation being used practically. They were coincident well each other within 5%, therefore the validity of the present method is proved. In the present work, the flow field in a clean room subject to pressure-based boundary conditions at an inlet and two exits was predicted numerically. The pressure difference between the inlet and the left exit which keeps relatively low pressure among two exits is fixed as 150[Pa] and the pressure at the right exit is varied from zero to 150[Pa] by the increment of 25[Pa]. For each cases the flow characteristics in the clean room, the velocity profile at the inlet, and the flow rate through the two exits was predicted. The flow rate through the right exit imposed on relatively higher pressure than the left exit decreased linearly according to the increase of pressure of the right exit. When the pressure of the right exit is increased enough to cause back flow at the exit, the flow rate is rapidly decreased.

• Vending industry
• /
• v.8 no.1 s.22
• /
• pp.98-98
• /
• 2008

• Korean Architects
• /
• no.12 s.248
• /
• pp.48-53
• /
• 1989

• The Science & Technology
• /
• v.20 no.6 s.217
• /
• pp.68-72
• /
• 1987

• Proceedings of the SAREK Conference
• /
• 2007.11a
• /
• pp.493-493
• /
• 2007

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
• /
• v.15 no.3
• /
• pp.209-225
• /
• 1986

• Proceedings of the Korean Institute of Industrial Safety Conference
• /
• 1997.11a
• /
• pp.245-250
• /
• 1997

오늘날 정전기에 의한 미립자 오염은 반도체 공정의 미세화기술에 대해 큰 장해가 되는 것은 물론이거니와 약간의 미립자에 의한 오염이라 하더라도 제품의 특성에 악영향을 주는 원인이 된다. 정전기는 공기청정화 기술의 하나로써 응용되고 있는 반면 크린룸 중에서 대전물체가 존재하면 이것에 분진이 흡인되어 부착하기 때문에 오염의 원인이 되기도 한다. (중략)

• Journal of the Korea Institute of Building Construction
• /
• v.3 no.2
• /
• pp.103-110
• /
• 2003

In the early 1990's the clean room system was a new trend of the operating room. This is the concept using in seminconductor plants. That is what the space around the operating table so clean as it remove contaminations with circulation of interior air. These articles describe the standard of interior construction and drawing details.

• Proceedings of the Korean Society Of Semiconductor Equipment Technology
• /
• 2007.06a
• /
• pp.301-305
• /
• 2007