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논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2006.6
- 수록면
- 2,415 - 2,420 (6page)
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초록· 키워드
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A Cold Neutron Source has been developed to install at HANARO which is a large scale research facility using neutrons. A cold neutron is very useful to investigate the structure or the motion of an amino acid, a protein and a virus. It also can be used to study the structure of polymer, metallic alloy to develop the new materials. To produce cold neutrons, thermal neutrons from a reactor should lose their energy by passing through a cryogenic fluid such as 20K liquid hydrogen or liquid deuterium. For HANARO cold neutron source, a two-phase thermo-siphon system using the liquid hydrogen as a moderator was selected. The moderator is cooled to maintain its liquid state by helium cryogenic refrigerator. The helium refrigerator should have a cooling capacity to cover the non-nuclear heat load as well as nuclear heat load with a sufficient margin. In this study non-nuclear heat load by conduction and radiation due to extreme temperature difference is estimated using commercial CFD code, CFX. According to the results, the non-nuclear heat load doesn’t exceed 300W which is allocated for the non-nuclear heat load of the refrigerator capacity.
목차
Abstract
1. 서론
2. 열침입 경로
3. 경로별 열침입량 분석
4. 결론
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UCI(KEPA) : I410-ECN-0101-2009-550-016800155