The flow and heat transfer characteristics of supercritical CO2 leakage from a pipeline

Li, Kang and Zhou, Xuejin and Tu, Ran and Xie, Qiyuan and Jiang, Xi (2014) The flow and heat transfer characteristics of supercritical CO2 leakage from a pipeline. Energy, 71. pp. 665-672. ISSN 0360-5442

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Abstract

The pipeline leakage process of supercritical CO2 involves complex phenomena because of the high inner pressure and the multiphase choked flow near the leakage point. In this work, an experimental facility was developed to investigate the thermodynamic and fluid dynamic behaviour in pressurized CO2 leakage process. Characteristics of the flow and heat transfer in the leakage processes were studied by investigating the variation of the mass flow rate and the development of the thermal boundary layer in the pipeline. Inner pressure, mass outflow rate at the leakage nozzle and Nusselt number in the pipeline were studied quantitatively based on the laboratory pipeline leakage system. Typical rapid expansion behaviour of supercritical fluid including sonic-choked flow phenomena and phase-transition process was observed during the leakage process. The data of the mass flow rate and Nusselt number could be used for leakage detection and validating numerical simulations of supercritical-gas multiphase flows in the pipeline leakage process.

Item Type:
Journal Article
Journal or Publication Title:
Energy
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2300/2310
Subjects:
ID Code:
70652
Deposited By:
Deposited On:
04 Sep 2014 09:22
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Oct 2020 04:31