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화재 시뮬레이션(FDS)을 이용한 대형공간의 제연 설계인자에 관한 연구
최상곤(Sang-Gon Choi) 한국산학기술학회 2018 한국산학기술학회논문지 Vol.19 No.11
최근 소방설계에서 ‘성능위주설계’가 도입되면서 설계 단계에서부터 현장에서 화재에 의한 최소한의 피해를 목적으로 다양한 노력을 기울이고 있다. 그러나 성능위주의 설계를 위한 다양한 노력에도 불구하고 설계엔지니어들에게 제연설비의 화재안전기준에서 제시하는 법령기준이 각 설계인자의 최소 설정한계를 제시하는 가이드가 된다. 이러한 법령기준은 최소한의 기준을 제공하는 것이기 때문에 다양한 상황의 건물과 더 다양한 변수를 고려해야하는 설계 엔지니어들에게 세밀한 가이드를 제공할 수는 없기 때문에 복합적인 상황에서 어떤 인자가 화재 시 안전에 더 영향을 많이 미칠 것인지 미리 인지하고 상황에 따라 인자들을 상호 조절할 수 있는 설계정보가 필요하다 할 것이다. 본 논문에서는 대공간에서 거실급배기방식을 사용하고 제연경계에 의하여 구획이 되어 있는 경우, 배연량을 법정 배연량으로 고정한 상태에서 거실제연 설계에 가장 영향을 많이 미칠 것으로 판단되는 두 가지 인자인 제연경계의 높이와 급기량을 대상으로 미 NIST에서 제공하는 화재시뮬레이션(Fire Dynamic Simulation) 코드를 이용하여 설계인자들에 대한 합리적인 설계를 위한 정보를 제공하기 위한 연구를 수행하였다. 성능위주설계를 위해 초기설계에 제연경계의 높이를 최대한계로 설계한 후 시뮬레이션 등의 다양한 방법을 통한 합리적인 풍량 결정이 이루어져야 할 것으로 판단된다 Performance-oriented design has been introduced in fire protection design, and various efforts have been made to minimize the damage caused by fire in the design stage. We conducted a study to provide information for reasonable design factors using a Fire Dynamic Simulation code provided by the NIST on boundary width and amount of supply. This paper shows that using a living-room air-supply system in a large space and dividing the space by a ventilation boundary are the two factors that are considered to have the greatest influence on the design of the living room ventilation. The results show that for performance-based design, the width of the ventilation boundary is designed to be the maximum limit in the initial design. It is judged that reasonable air volume determination should be made through various methods.
최상곤(Sang-Gon Choi) 대한설비공학회 2010 설비공학 논문집 Vol.22 No.6
Recently H1N1(swine flu) and SARS has been infected widely in the world; we have to care about germs and virus in indoor air environment. The air sterilization system investigated in this study allows occupants to turn on/off and to control the incoming air speed and direction. To predict the performance of air sterilization system without real experiment, a simulation is considered to compare and analyze the performance of the air sterilization systems in a typical office space. Multiple system parameters including volume flow rate and velocity of supply air were varied and investigated during the simulation. The investigation result shows that difference (between simulation and experiment) was about 3.5% in case of minimum air flow rate and about 0.2% in case of maximum air flow rate. The results indicate that multizone simulation technique can be used to predict the performance of a sterilization system in personalized office.
병원의 공기조화방식에 따른 공기 감염균 확산에 관한 멀티존 시뮬레이션 연구
최상곤 ( Sang-gon Choi ) 대한설비관리학회 2016 대한설비관리학회지 Vol.21 No.3
Recently there is a growing interest in the airborne spread. In particular, there is growing interest in secondary infection through the air in the hospital. The distribution of airbone virus depends on the type of HVAC system installed in a hospital. So, a study was progressed Multi-zone simulation in case of applying to EHP system or AHU system in the hospital. When applying the AHU system was distributed low pollution as compared with the case of applying the EHP system. When applying the AHU system was distributed the pollution more extensive as compared with the case of applying the EHP system. In the rest result, show that corridors and elevator hall and air duct is main moving path of the virus. Accordingly, it have to be managed by installing the air sterilizer on the moving path.
실내 미생물오염 전파방지를 위한 멀티죤 모델링에 관한 연구
최상곤(Sang Gon Choi),이현우(Hyun woo Lee),홍진관(Jin Kwan Hong) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
In this study multi-zone modeling program CONTAM 2.4 which is developed by NIST is used for modeling the air disinfection system which is consist of dilution, filtration, ultra violet germicidal irradiation (UVGI) for removing the indoor microorganism such as bacteria and fungus. Developed models those protect occupants against indoor microorganism generated in our daily life are enable to use for immune building simulation tool. Also, results indicate that those models are enable to compute the real situation that is almost impossible of carrying out experiment and identify the disinfection rate with highly reliance. Results also suggest that engineers will use these models as a design tool for the immune building system.
멀티죤 시뮬레이션에 의한 공동주택의 미생물 오염원제거 성능평가에 관한 연구
최상곤(Sang Gon Choi),박경수(Kyung Su Park),윤영수(Young Soo Yoon),홍진관(Jin Kwan Hong) 대한설비공학회 2006 대한설비공학회 학술발표대회논문집 Vol.2006 No.6
The purpose of this study is to evaluate the efficacy of multizone simulation that enables to grasp of details about microbial contaminant problem in an multistoried apartment. We used actual indoor test data to figure up microbial contaminant level as initial value for the multizone simulation and estimated the various effects of indoor occupant infected with germs and the performance of air sterilization by using multizone simulation in substitute for infeasible expermental approach. The results show that natural ventilation make ourselves generally useful for removing indoor microbial contaminants. The results also show that the performance of air sterilization reach the maximum in the case of using mechanical ventilation and UVGI air sterilizer. The conclusion is that this multizone simulation is useful tool for actual design method for Immune building systems.
최상곤(Choi Sang-Gon),정기범(Jeong Ky-Bum),홍진관(Hong Jin-Kwan) 대한건축학회 2008 대한건축학회논문집 Vol.24 No.4
The air sterilization system investigated in the study presented in this paper allows occupants to turn on/off and to control the supply air speed and direction. The system can reduce bacteria, mold spores and viruses in the air by using UV sterilizer in the partition panels. The partition air sterilization system delivers conditioned and sterilized air to the personal task area through the partition panels that connect to the pressurized under-floor plenum. Room air exhausts through return grills mounted on the ceiling. The study established a full-size experimental environment to investigate the immunization performance of partition air sterilization systems. To find an optimal system that is able to achieve a sterilized healthy micro-environment, an experiment is considered to compare and analyze the performance of the partition air sterilization system in a typical office space. Multiple system parameters including volume flow rate and velocity of supply air were varied and investigated during the experiment. The more air was contacted with partition air sterilization system, the better we could eradicate air contamination. Over 90% of eradication ratio obtained by the partition air sterilization system indicates this system was efficient for removal of air contamination.
최상곤 ( Sang-gon Choi ),장성민 ( Sung-min Jang ) 한국고등직업교육학회 2007 한국고등직업교육학회논문집 Vol.8 No.4
In this study the real situation of apartment house in Seoul is reproduced with multi-zone modeling program contam2.4. This model include disinfection system which is consist of dilution, filtration, UVGI(ultra violet germicidal irrdiation). In this study simulation is carried out in case of varing the HRV air change rate, UVGI air change rate, filter grade and UVGI grade by experiments design method. Result show that dilution have most influence for remove rate but dilution is recommended 0.7 ACH by law so UVGI air change rate is great influence for remove rate.