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방음터널 내부의 상부배출구 간격에 따른 CO 농도분포 특성
박명식 ( Myung Sig Park ) 한국액체미립화학회 2016 한국액체미립화학회지 Vol.21 No.3
When we construct a road near an apartment complex, we consider a soundproof wall. To make residential places quieter, we may consider a soundproof road tunnel. Such a tunnel, however, would become highly concentrated with soot from vehicles whenever a traffic jam might occur. To create an optimum design, this study utilizes the PHOENICS-VR software. The work considers three cases: (1) no openings (2) openings at 30m intervals, and (3) openings at 60m intervals on the upper side of the tunnel. The study finds that in the second case shows CO concentration distributions were 15% less than those without openings. And the CO concentration distributions of the second and third cases are almost the same. The findings suggest that we should make the soundproof tunnel to reduce construction fees.
차광석(Cha Kwang -Seok),박명식(Park Myung-Sig),이대우(Lee Dae-Woo),남우동(Nam Woo-Dong) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
Recently according to the fashion of well-being, the case study of under floor heating system type for residential space is increasing. Specially double slab floor system can make several roles as reducing the acoustic noises and also supplying fresh air through the gap. So in present study floor heating performance was examined with various location of the space in the case of floor supply air and ceiling supply air. In both cases return air went out through ceiling opening. As one of the result is that when using the heat pipe type floor heating system the temperature difference between supply and return water was 15.2℃, but in case of commercial type floor heating system, the temperature difference was 5.3℃ when the supply water temperature was 50℃.
요코야마 유타카(Yutaka Yokoyama),유민영(Min Young Yu),박명식(Myung Sig Park) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.11
Footstep sound is able to give the pedestrian a light feeling, indication which is made to be felt in surroundings. Furthermore, the pedestrian is made to be specified, and the space is designed as the space is divided and some information is given to the user, including the visually handicapped person by using the aural stimulation and it becomes a factor to enrich life in a general living space, while the footstep sound becomes a noise in the space that requires silence. Thus, understanding the relation of the material, construction method of the floor and footstep sound as a tool to be new technique in the design and the production of the space, including the sound environment is that becomes very useful to take the footstep sound to the design factor. This report describes the validity of footstep sound reproduction apparatus to arrange between the material, construction method of floor and footstep sound systematically based on the result of examining the contact situation of the footwear bottom and the floor while walking in detail by using various footwear, and the setting of standard impact condition of the apparatus.