August 20, 2025ProcessesOpen Access

Numerical Investigation on Heat Transfer of Supercritical CO2 in Minichannel with Fins Integrated in Sidewalls

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Numerical models reveal enhanced heat transfer in supercritical CO2 minichannels, suggesting fin integration improves gas cooler efficiency.

Heat transfer performance significantly improves with fins integrated in sidewalls, enhancing efficiency.
Fins boost the heat transfer coefficient by 1.85–2.15 times compared to smooth channels under constant flux.
Three-dimensional numerical models used incorporate thermophysical properties and buoyancy effects.
Model findings indicate mass flux increases the heat transfer coefficient, highlighting design relevance.

Lei Chai (2025) studied this question.

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Numerical models reveal enhanced heat transfer in supercritical CO2 minichannels, suggesting fin integration improves gas cooler efficiency.