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RCP 입구 배관 형상에 따른 펌프 성능곡선 기울기에 대한 수치해석 연구
황순찬(Soon-Chan Hwang),윤현기(Hyun-Gi Yoon),박종호(Jong-Ho Park) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
RCP (Reactor Coolant Pump) is the coolant circulation pump in the nuclear power plant. In general, pump is selected with a sufficient operation margin because it is controlled by the control valve. But, in the nuclear system, primary cooling system is operated without a control vale to improve the safety of the reactor. So, exact fluid system analysis is required to estimate the flow rate, pressure drop, NPSHa, slope of the performance curve and other requirements. At here, slope of the performance curve is important to ensure the normal operation during the life-time of the plant because the system curve is shifted during from the beginning of the plant to the end of plant. In the present study, Slope of the RCP performance curve is calculated based on the numerical simulation results. Two kinds of inlet pipe are used to calculate the pump performance: Straight pipe, elbow pipe. The slope of the performance curve with the straight pipe is steeper than that with the elbow pipe inlet.
유희종(You Hee-Jong) 대한건축학회 2010 대한건축학회논문집 Vol.26 No.9
Recently, the desire of agreeable housing environment has been increased as improving the national thinking and the level of the life in the advancement of new culture. Nevertheless, there is the actual circumstance that not be realized the study on the problem of design of existing multi-layered bathroom structure. This paper grasps the problem of multi-layered apartment house bathroom structure and proposes the new design on the structure decreasing the equipment noise in the multi-layered bathroom structure by implementing pipe arrangement facilities in connection with sanitation equipment structure used concerned generation with bottom-pipe arrangement system In the near future, if taken an active part in a design of conventional multi-layered bathroom structure, this study will make good use of grounding research material in a building of multi-layered bathroom structure.