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초소형 원심압축기의 날개 두께 변화에 따른 성능에 관한 실험적 연구
강신형,조운제,윤하용,이승갑,Kang, Shin-Hyoung,Cho, Woon-Je,Yun, Ha-Yong,Lee, Seung-Kap 한국유체기계학회 1999 한국유체기계학회 논문집 Vol.2 No.1
Some sized centrifugal compressors were designed and their performance measured to investigate the effects of exit blade thickness, width and back swept angle. The impeller of larger blade thickness shows low pressure ratio compared with that of smaller ones. Backswept angle also have a large effect on the efficiency. Measured values of slip factor are quite different from the estimated values of the Wiesner-Busemann model and an increase in the flow late.
전열교환 환기시스템의 운전 상태에 따른 결로 발생에 관한 연구
전병헌(Byung-Heon Jeon),김종원(Jong-Won Kim),이승갑(Seung-Kap Lee),이영주(Young-Ju Lee),안영철(Young-Chull Ahn) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.10
Heat-recovery ventilators are being adopted in most newly built apartment houses for energy reduction and indoor environment improvement. In winter, however, the dew condensation resulting from the difference between the indoor and outdoor temperatures may reduce the ventilator.s performance and threaten the health of indoor residents. This study analyzes the occurrence of dew condensation according to the ventilator.s operational conditions and the changes of temperature and products. The experimental results show that condensations is formed at 26℃ and 60%R.H, which is an unfavorable climatic condition, and when the damper is not closed tightly. Therefore it is important to ensure damper performance to prevent back flow.
전열교환 환기시스템의 운전 상태에 따른 결로 발생에 관한 연구
전병헌(Byung-Heon Jeon),김종원(Jong-Won Kim),이승갑(Seung-Kap Lee),이영주(Young-Ju Lee),안영철(Young-Chull Ahn) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.11
In these days, heat-recovery ventilators are being adopted in most of newly built apartment houses for energy reduction and indoor environment improvement. In winter, however, the dew condensation resulting from the difference between the indoor and outdoor temperatures may reduce ventilator"s performance and threaten health of indoor residents. This study is intended to analyze the occurrence of dew condensation according to the ventilator"s operational conditions and the changes of temperature and products. The experimental results shows that condensations are formed at 26℃ and 60%R.H. which is an unfavorable climatic condition, and when the damper is not closed tightly. Therefore it is important to ensure the damper performance for preventing back flows.