http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Yousef M. Farawila (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
Loss of coolant accident analysis under restriction of reverse flow
Majdi I. Radaideh,Tomasz Kozlowski,Yousef M. Farawila 한국원자력학회 2019 Nuclear Engineering and Technology Vol.51 No.6
This paper analyzes a new method for reducing boiling water reactor fuel temperature during a Loss ofCoolant Accident (LOCA). The method uses a device called Reverse Flow Restriction Device (RFRD) at theinlet of fuel bundles in the core to prevent coolant loss from the bundle inlet due to the reverse flow aftera large break in the recirculation loop. The device allows for flow in the forward direction which occursduring normal operation, while after the break, the RFRD device changes its status to prevent reverseflow. In this paper, a detailed simulation of LOCA has been carried out using the U.S. NRC's TRACE code toinvestigate the effect of RFRD on the flow rate as well as peak clad temperature of BWR fuel bundlesduring three different LOCA scenarios: small break LOCA (25% LOCA), large break LOCA (100% LOCA), anddouble-ended guillotine break (200% LOCA). The results demonstrated that the device could substantiallyblock flow reversal in fuel bundles during LOCA, allowing for coolant to remain in the core during thecoolant blowdown phase. The device can retain additional cooling water after activating the emergencysystems, which maintains the peak clad temperature at lower levels. Moreover, the RFRD achieved thereflood phase (when the saturation temperature of the clad is restored) earlier than without the RFRD.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
