August 21, 2025Open Access

Performance of a Natural Draft Direct Dry Cooling System for a Supercritical CO2 Power Cycle Using a Coupled Simulation Approach

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Coupled simulations reveal airflow effects in a cooling tower for supercritical CO2 systems, suggesting enhanced efficiency.

The simulation showed a 6.25% reduction in air mass flow rate and a 13.85% decrease in heat transfer compared to earlier models.
Results indicated that the alternating tube bank configuration improved air mass flow rate by 1.88% and heat transfer by 1.02%.
A coupled simulation approach combined 1-D thermofluid and 3-D CFD models to assess the cooling system effectively.
Further investigation is needed under crosswind conditions to validate the alternating configuration's performance benefits.

Niekerk et al. (2025) studied this question.

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