Forced convective boiling heat transfer of water in vertical rectangular narrow channel

Low mass flux upward vertical forced flow boiling of HFE7000

“…However, the intention here is not to provide an exhaustive evaluation of these different correlations. However, it seems appropriate to summarize some finding, in particular with respect to the Chen [3] correlation due to its widespread use in the literature as well as in industry.…”

“…Chen [3] was one of the first to propose a robust correlation for convective boiling and it, along with many modified versions of it, have been used to predict the convective boiling heat transfer coefficient for over half a century. It is, without doubt, the most cited correlation for convective boiling heat transfer and it seems prudent to revisit this work in the context of the present measurements, since it is rare to have local heat transfer and flow regimes to consider together.…”

“…With the new data one can, to some extent, evaluate the applicability of the mechanistic sub-models and associated assumptions in the context of the observed flow regimes and heat transfer. Chen [3] proposed a method whereby convective boiling heat transfer is a function of both bulk convection and nucleate boiling mechanisms, with the latter accounting for the nucleation and growth of bubbles. These represented what was termed macroconvection and microconvection heat transfer mechanisms respectively.…”

“…Here the heat is transferred by conduction and convection across the film while evaporation takes place at the liquid-vapour interface. Here, the heat transfer coefficient is less dependent on the heat flux and tends to increase with the increase in mass velocity and vapour quality [3].…”

Study on Flow Boiling Characteristics in Rectangle Channel After Formation of Blisters

“…In recent years, many experiments had been conduct to investigate the thermal hydraulic characteristics of plate-type fuel elements, including heat transfer characteristics (Lee and Lee, 2001;Wang et al, 2014a;Chen et al, 2015), subcooled boiling characteristics (Li et al, 2013;Wang et al, 2014b;Al-Yahia and Jo, 2017;Song et al, 2017) and critical heat flux (Debortoli et al, 1958;Sudo et al, 1985). Li et al (Li et al, 2013) studied the boiling characteristic of water in narrow rectangular channel at atmospheric pressure.…”