Performance comparison between no-vent and vented fills in vertical thermal-insulated cryogenic cylinders

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• 作者：Caili Wang ; Yang Li ; Rongshun Wang
• 关键词：Vented fill ; No-vent fill ; Performance comparison ; Temperature distribution ; Pressure
• 刊名：Experimental Thermal and Fluid Science
• 出版年：2011
• 出版时间：February 2011
• 年：2011
• 卷：35
• 期：2
• 页码：311-318
• 全文大小：836 K

文摘

Vented and no-vent fills are two main techniques applied in cryogenic fields for different purposes. No-vent fills are promising for dangerous or precious cryogens, especially in a low-g environment. This paper is to present the comparative results of both pressure and temperature in the vented and no-vent fills for a 180-L cryogenic cylinder. Emphases are laid on the analysis of temperature distribution of cryogens and wall temperature, and analysis of comparison between incoming temperature, saturation temperature and bulk temperature. By test comparison of vented and no-vent fills, different thermodynamic states in the receiver tanks with different filling configurations are revealed. The experimental data are provided as supports of valid assumptions and are useful for modification of models.