| 应用于低温贮箱的变密度多层绝热传热分析 |
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| 引用本文： | 冶文莲,王田刚,王小军,王丽红,张安. 应用于低温贮箱的变密度多层绝热传热分析[J]. 低温与超导, 2012, 0(12): 5-8 |
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| 作者姓名： | 冶文莲 王田刚 王小军 王丽红 张安 |
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| 作者单位： | 兰州物理研究所真空低温技术与物理重点实验室 |
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| 摘 要： | 采用Layer-by-Layer传热模型对真空多层绝热结构中的传热过程进行了分析,根据各项(辐射换热、气体导热、固体导热)换热分布情况,提出4区域不同层密度的多层绝热结构,分析了各区域层密度变化对多层绝热性能的影响,得出一个使总热流最小的层密度,研究了其各项换热规律以及受到热边界温度的影响。
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| 关 键 词： | 变密度 多层绝热 低温贮箱 零蒸发 |
Heat transfer analysis of variable density multi-layer insulation for cryogenic storage tank |
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| Ye Wenlian,Wang Tiangang,Wang Xiaojun,Wang Lihong,Zhang An. Heat transfer analysis of variable density multi-layer insulation for cryogenic storage tank[J]. Cryogenics and Superconductivity, 2012, 0(12): 5-8 |
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| Authors: | Ye Wenlian Wang Tiangang Wang Xiaojun Wang Lihong Zhang An |
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| Affiliation: | (Science and Technology on Vacuum & Cryogenic Technology and Physics Laboratory,Lanzhou Institute of Physics, Lanzhou 730000,China) |
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| Abstract: | A layer-by-layer model was developed to numerically calculate heat transfer of vacuum muli-layer insulation.Multi-layer insulation structure of four domains layer-density was presented after according to the distribution of heat transfer,such as radiation heat transfer,gas and solid conduction,and different layer density on effect of insulation performance was mainly discussed.The result above showed that there was a optimal layer density which made the heat flux minimum,the relation for heat transfer distribution and hot boundary temperature with the optimal layer density was analyzed in the end. |
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| Keywords: | Variable density Multi-layer Cryogenic storage tank Zero boil-off |
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