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Supercritical CO2 as heat transfer fluid: A review.

Author(s) : CABEZA L. F., GRACIA A. de, FERNÁNDEZ A. I., et al.

Type of article: Article, Review

Summary

This paper presents a comprehensive review of all correlations and experimental studies available in the literature to determine the heat transfer coefficient of supercritical CO2 flowing in heat exchangers. The different applications in which it is used are also reviewed and discussed. The correlations obtained from extensive experimental measurements are presented for different geometries (horizontal, vertical and inclined tubes, closed-loop circular pipes, and mini-channels) and dimensions. The review shows that there is a lack of a unique universal correlation for each geometry, suggesting the need for more work in this area.

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