DC Field | Value | Language |
---|---|---|
dc.contributor.advisor | No, Hee-Cheon | - |
dc.contributor.advisor | 노희천 | - |
dc.contributor.author | Eoh, Jae-Hyuk | - |
dc.contributor.author | 어재혁 | - |
dc.date.accessioned | 2011-12-14T08:06:42Z | - |
dc.date.available | 2011-12-14T08:06:42Z | - |
dc.date.issued | 2010 | - |
dc.identifier.uri | http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=455409&flag=dissertation | - |
dc.identifier.uri | http://hdl.handle.net/10203/49032 | - |
dc.description | 학위논문(박사) - 한국과학기술원 : 원자력및양자공학과, 2010.08, [ xii, 160 p. ] | - |
dc.description.abstract | The supercritical $CO_2$ Brayton cycle option for energy conversion in a Sodium-cooled Fast Reactor (SFR) recently received a great deal of attention due to highly reliable system design features that make it essentially free from risk of a sodium-water reaction in a traditional Rankine cycle power conversion. Although the novel approach will yield significant improvements in overall plant energy utilization, it raises the risk of a potential pressure boundary failure and consequential sodium-$CO_2$ interaction. For this reason, kinetic behaviors should be assessed to confirm its impact upon plant safety. In the present study, fundamental surface reaction tests for a sodium-$CO_2$ interaction were carried out and its kinetics was investigated. The tests were performed for sodium temperatures ranging from $200\degC$ to $600\degC$. Based on the test results, it was found out that the reaction kinetics over the sodium temperature range of $300\degC$ to $550\degC$ depends heavily on the temperature but is not sensitive to the velocity of $CO_2$ flowing over the gas-liquid reacting interface. Gaseous and non-gaseous reaction products were sampled and analyzed quantitatively. The rate of the chemical reaction was determined by measuring the gas concentration of the CO/$CO_2$ mixture. Then, a two-zone reaction model with a threshold temperature of $460\degC$ was proposed. The kinetic parameters for each reaction zone were experimentally obtained and the corresponding model parameters were identified. It was also observed that the self-ignition of sodium took place if the sodium temperature exceeds $590\degC$, regardless of any other reaction conditions like supplied $CO_2$ temperatures and flow rates. Based on the fundamental investigation results for sodium-$CO_2$ interaction mechanism, two major design issues were investigated in regard to the $CO_2$ ingress accident into liquid sodium: i) a wastage phenomenon in regard to a structural damage adjacent to the leaki... | eng |
dc.language | eng | - |
dc.publisher | 한국과학기술원 | - |
dc.subject | wastage effect | - |
dc.subject | two-zone reaction model | - |
dc.subject | surface reaction test | - |
dc.subject | self-plugging | - |
dc.subject | 유로막힘 특성 | - |
dc.subject | Wastage 효과 | - |
dc.subject | 2영역 반응모형 | - |
dc.subject | 표면반응 실험 | - |
dc.title | $Sodium-CO_2$ interaction in a supercritical $CO_2$ power cycle for a Sodium-cooled Fast Reactor | - |
dc.title.alternative | 초임계 $CO_2$ 동력계통을 사용하는 소듐냉각 고속로의 $소듐-CO_2$ 반응현상에 관한 연구 | - |
dc.type | Thesis(Ph.D) | - |
dc.identifier.CNRN | 455409/325007 | - |
dc.description.department | 한국과학기술원 : 원자력및양자공학과, | - |
dc.identifier.uid | 020045153 | - |
dc.contributor.localauthor | Eoh, Jae-Hyuk | - |
dc.contributor.localauthor | 어재혁 | - |
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