Applied Thermal Engineering 102 (2016) 391–401 Contents lists available at ScienceDirect Applied Thermal Engineering journal homepage: www.elsevier.com/locate/apthermeng Research Paper Flow and heat transfer characteristics of high-pressure water ﬂowing in a vertical upward smooth tube at low mass ﬂux conditions Zhi Shen, Dong Yang , Haiyan Xie, Xin Nie, Wanyu Liu, Siyang Wang State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China highl i ghts graphical a bstrac t The inﬂuence of mass ﬂux on the occurrence of dryout is non- monotonic. DNB dominants heat transfer deterioration at near critical pressures. Abnormal heat transfer occurs within the pseudo critical region. Three correlations all underestimate the frictional pressure drop. article i nfo abstract Article history: An experiment that covered a wide range of parameters was conducted to investigate the ﬂow and heat Received 16 December 2015 transfer characteristics of water ﬂowing in a vertical upward smooth tube. The effects of the operating Accepted 28 March 2016 parameters on ﬂow and heat transfer were analyzed, and the corresponding empirical correlations were Available online 31 March 2016 presented. Results show that at subcritical pressures, dryout dominates heat transfer deterioration. This phenomenon can be delayed by reducing
Applied Thermal Engineering – Elsevier
Published: Jun 5, 2016
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