Heat transfer and venting rate during controlled decompression of supercritical extraction vessels

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• 作者：Eduardo A. Richter ; M. Soledad Murias ; José ; M. del Valle ; ^{delvalle@ing.puc.cl}
• 关键词：Chocked flow ; Decompression ; Extraction vessel ; Heat transfer ; Packed bed ; Supercritical CO2
• 刊名：The Journal of Supercritical Fluids
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：120
• 期：part_P2
• 页码：275-284
• 全文大小：2811 K
• 卷排序：120

文摘

Energy balance calculations improved when changing from a reactor in previous work to an extractor in this. Differences between wall and bulk temperature evidenced heat transfer through the packed bed. Mass flow does not depend on valve opening when this is small, due possibly to clamping. Packed bed porosity expressed by the Darcy number affects heat transfer during decompression. Transient heat transfer in the vessel wall was verified by mathematical simulation.