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首页> 外文期刊>Journal of Heat Transfer >Flow Boiling of Coolant (HFE-7000) Inside Structured and Plain Wall Microchannels
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Flow Boiling of Coolant (HFE-7000) Inside Structured and Plain Wall Microchannels

机译：结构化和平壁微通道内部的冷却剂（HFE-7000）流动沸腾

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Flow boiling was experimentally studied using coolant HFE-7000 for two types of parallel microchannels: a plain-wall microchannel and a microchannel with structured reentrant cavities on the side walls. Flow morphologies, boiling inceptions, heat transfer coefficients, and critical heat fluxes were obtained and studied for mass fluxes ranging from G = 164 kg/m~2 s to G =3025 kg/m~2 s and mass qualities (energy definition) ranging from x= -0.25 to x= 1. Comparisons of the performance of the enhanced and plain-wall microchannels were carried out. It was found that reentrant cavities were effective in reducing the superheat at the onset of nucleate boiling and increasing the heat transfer coefficient. However, they did not seem to increase the critical heat flux.
机译：使用冷却剂HFE-7000对两种类型的平行微通道进行了流动沸腾的实验研究：平壁微通道和侧壁上具有结构性凹腔的微通道。获得了流动形态，沸腾开始，传热系数和临界热通量，并研究了从G = 164 kg / m〜2 s到G = 3025 kg / m〜2 s的质量通量和质量（能量定义）范围从x ＝ -0.25到x ＝ 1。进行了增强型和平壁微通道性能的比较。已经发现，凹腔可有效地减少核沸腾开始时的过热并增加传热系数。但是，它们似乎并未增加临界热通量。

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