Heat transfer correlation for sCO2 cooling in a 2 mm tube

Wahl, Andreas; Mertz, Rainer; Laurien, Eckart; Starflinger, Jörg

doi:10.1016/j.supflu.2021.105221

Cited by 16 publications

(2 citation statements)

References 22 publications

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“…Under different flow rate conditions, the heat transfer coefficient oscillates near the peak. Liao and Zhao [22], Pitla et al [23], Yoon et al [24], Dang and Hihara [25], Kuang et al [26], Huai et al [27], Son and Park [28], Jing et al [31], Oh and Son [32], Eldik et al [33], Liu et al [34], Ding and Li [35], Zhang et al [37], Wahl et al [39], Dong et al [53], Huai and Koyama [54], and Lv et al [55] all experimentally investigated heat transfer characteristics influenced by mass flow with various parameter ranges and drew the consistent conclusions.…”

Section: Effect Of Mass Flux On Heat Transfer Characteristicsmentioning

confidence: 99%

“…The heat transfer coefficient peaks at a pressure close to P c are more pronounced. Liao and Zhao [22], Pitla et al [23], Yoon et al [24], Dang and Hihara [25], Huai et al [27], Son and Park [28], Jing et al [31], Oh and Son [32], Eldik et al [33], Liu et al [34], Ding and Li [35], Zhang et al [37], Wahl et al [39], Dong et al [53], Huai and Koyama [54], and Lv et al [55] have given the experimental results of the change in heat transfer coefficient of SCO 2 with temperature in different parameter ranges. Their conclusions on the change in heat transfer coefficient with operating pressure were consistent with the above.…”

Section: Effect Of Operating Pressure On Heat Transfer Characteristicsmentioning

confidence: 99%

See 1 more Smart Citation

A Review of Flow and Heat Transfer Characteristics of Supercritical Carbon Dioxide under Cooling Conditions in Energy and Power Systems

Wei

Tian

et al. 2022

Energies

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Supercritical carbon dioxide (SCO2) is widely used in many fields of energy and power engineering, such as nuclear reactors, solar thermal power generation systems, and refrigeration systems. In practical applications, SCO2 undergoes a cooling process significantly when it is cooled near the pseudo−critical point. Because of the drastic variations in thermo−physical properties, the heat transfer characteristics fluctuate, affecting the heat exchange and overall cycle performance. This paper summarizes extensive experiments and numerical simulations on the cooling process of SCO2 in various application scenarios. The effects of various working conditions, such as mass flow, working pressure, pipe diameter, flow direction, and channel shapes, are reviewed. The applicability and computational results using different numerical methods under different working conditions are also summarized. Furthermore, empirical correlations obtained in experiments at different conditions are included. The present review can provide a helpful guideline for the design of effective cooling systems or condensers so that the accuracy of the design and efficiency of the system can be improved.

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