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| 1 | The synthesis of micro-sized silicon carbide whiskers and the application for heat transfer enhancement显示文摘This paper presents a simple and cost-effective method for the production of micro-sized silicon carbide whiskers at high yield and the effect on heat transfer enhancement for the whisker laden fluids. For Si C whisker synthesis, the starting powder mixture is obtained by milling short carbon fibers with the white ashes of rice hulls. Calcination in argon, together with the subsequent purification process, results in a high yield of Si C whiskers, which possess a diameter of 200–400 nm and a length of several tens of microns. The formation of the whiskers is discussed according to VS growth mechanism. Convective heat transfer performance in small channel tubes is then studied for fluid systems mixed with those micro-sized Si C whiskers at different concentrations. The heat transfer coefficient of Si C containing fluid can be significantly improved in comparison to the base fluid. | ZHANG Pei Gen LIANG Jian Dong YIN Li Ying GUO Sheng Min | 2014 | Science China(Technological Sciences)2014，57，12： | 3 |
| 2 | 流道排列对多介质板式换热器性能的影响分析显示文摘以■耗散数为目标函数,应用数值计算的方法分析了换热介质流道排列方式对板式换热器性能的影响。通过分析3~6个流道所包含的26种排列方式情况下的换热器耗散数及板间流动阻力损失变化,认为在相同的工况下,随着流道数量的增加,换热器总的压力损失呈阶梯降低的趋势;相同流道数情况下,冷热介质流道的排列形式对换热器耗散数影响较大;而相同的流道数量所对应的最小耗散数随流道数量的增加而降低,对多介质换热器性能的研究提供了一定的借鉴。 | 宋继伟 韩戈 杜婷婷 程林 | 2014 | 化工学报2014，65，S1： | 1 |
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