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동절기 옥외 수영장 시설의 운영을 위한 바닥난방 성능평가 및 설계기준에 관한 사례연구
조진균(Jinkyun Cho),우경헌(Kyunghun Woo),김진호(Jin-Ho Kim) 대한설비공학회 2017 설비공학 논문집 Vol.29 No.6
This study aimed to analyze the deck floor heating system of an outdoor swimming pool in terms of the thermal capacity/output and the surface temperature distribution based on the outdoor temperature, to design for anti-freezing during winter. Through the transient heat transfer simulation with PHYSIBEL and theoretical equations, the surface temperature distribution of the floor heating system at two outdoor conditions in Jeju, were calculated and evaluated. The results indicate that the specific thermal output required for maintaining 4℃ surface temperature at the design outdoor temperature of 0.1℃, was about 90 W/m². This performance analysis can be applied for future design criteria, including optimizations of system capacity and size.
병원 내 공기감염의 효과적 방지를 위한 음압격리병실 최적 환기시스템의 실험적 연구
조진균(Cho, Jinkyun),우경헌(Woo, Kyunghun),강호석(Kang, Hosuk) 대한건축학회 2017 大韓建築學會論文集 : 構造系 Vol.33 No.3
The purpose of this study is to analyze the removal performance of airborne contamination in a negative airborne infectious isolation room by conducting the field measurement and numerical analysis. This research investigates the pollutant distribution patterns by network ventilation simulation (macro analysis), CFD modeling (micro analysis) and field measurement based on three ventilation systems. An effective ventilation system is crucial to protect doctors, nurses and other healthcare workers from patients with infectious diseases. The results show that ventilation systems utilizing the low-level extraction technique are very effective at removing pollutants in the human breathing zone. A new clean isolation room ventilation strategy has been developed that employs two exhaust air grilles on the wall behind the bed, and is found to have the highest pollutant removal efficiency. The numerical simulation was verified by comparing its prediction result and the field measurement. Isolation room design strategies are formulated based on the results made in this study.