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March 21, 2026Physics of Fluids0 citations

Heat Transfer Characteristics of Supercritical Carbon Dioxide in Mini Square Channels

Heat transfer characteristics of supercritical carbon dioxide flowing in vertical mini square channels

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Authors

LWLuochang WuZYZeyu YangJYJianguo Yan

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Overview

Investigation reports improved heat transfer in vertical mini square channels using supercritical carbon dioxide, suggesting new predictive correlations.

Key Points

  • This work aims to investigate the heat transfer characteristics of supercritical carbon dioxide in vertical mini square channels.
  • Conducted experiments using a 1.6 × 1.6 mm2 vertical square channel.
  • Analyzed the effects of varying pressure, mass flux, and heat flux on heat transfer.
  • Divided sCO2 flow heat transfer into liquid-like, two-phase-like, and vapor-like regions.
  • Upward flow of sCO2 showed a higher heat transfer coefficient compared to downward flow.
  • Buoyancy and thermal acceleration had minor effects on heat transfer.
  • Established a new predictive heat transfer correlation for vertical mini square channels with a deviation of within -20% to +30% from experimental data.
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Cite This Study

Wu et al. (2026) studied this question.

synapsesocial.com/papers/69be36f76e48c4981c6764cehttps://doi.org/10.1063/5.0314037
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