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- 저자 : Haibiao Yu (검색결과 2 건)
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Xiaoyu Li,Chuhao Li,Yang Hu,Yongqi Yu,Wenjie Zeng,Haibiao Wu 한국원자력학회 2022 Nuclear Engineering and Technology Vol.54 No.6
The coolant temperature feedback coefficient is an important parameter of reactor core power controlsystem. To study the coolant temperature feedback coefficient influence on the core power controlsystem of small PWR, the core power control system is built with the nonlinear model and fuzzy controltheory. Then, the uncertainty quantification method of reactor core parameters is established based onthe Latin hypercube sampling method and the Bootstrap method. Finally, under the conditions ofreactivity step perturbation and coolant inlet temperature step perturbation, uncertainty analysis for twocases is carried out. The result shows that with fuzzy controller and fuzzy PID controller, the uncertaintyof the coolant temperature feedback coefficient affects the core power control system, and the maximumuncertainties of core relative power, coolant temperature deviation, fuel temperature deviation and totalreactivity are acceptable
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Ying Xiong,Lisha Xie,Long Zhu,Yuejiao Wang,Weijun Shan,Zhenning Lou,Junshuo Cui,Haibiao Yu 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.108 No.-
In this study, a three-dimensional chitosan/mesoporous silica composite material (I-CTS-KIT-6) was successfullysynthesized by one-step method using ion imprinting technology. To overcome the enormouscost problem, MoO4 2 with similar radius to ReO4was selected as template ion. In addition, the adsorbentwas prepared by using glutaraldehyde and chitosan as crosslinking agents and monomers and TEOS assilicon source in the process of imprinting. The effects of pH values, mass of chitosan and templateion, contact time, temperature and concentration on Re(VII) adsorption were studied. The resultsrevealed that the I-CTS-KIT-6 has the saturated adsorption capacity of 368.8 mg g1 at pH 3.0 for Re(VII), and the adsorption process corresponded to Langmuir isotherm and pseudo-second-order kinetics. Especially, the I-CTS-KIT-6 has higher selectivity for rhenium ions compared with the non-imprintedadsorbent. To verify the adsorption mechanism, density functional theory (DFT) was adopted to analyzethe binding patterns of Re(VII) with the I-CTS-KIT-6. The test analysis and calculation results further mentionedthat the adsorption mechanism is mainly three N atoms of I-CTS-KIT-6 coordinated with threeoxygen atoms of ReO4, which provides the theoretical foundations and explanations for adsorptionprocess.
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