An overview of liquid–vapor phase change, flow and heat transfer in mini- and micro-channels

摘要: Abstract Heat management in high thermal-density systems such as CPU chips, nuclear reactors and compact heat exchangers is confronting rising challenges due to ever more miniaturized intensified processes. While searching for transfer enhancement, micro-channel flow boiling found be an efficient removal approach. However, the understanding of micro-scale phase changing process still not a closed topic, which impedes wider applications this technique. In present review, macro- micro- transition, vapor dynamics, instabilities varying trends characteristics well proposed correlations with respect diverse conditions mini- micro-channels are summarized. The analyses reveal that dynamics confined space far from enough. Monitoring single bubble growth geometry evolution will help probe into pattern transition subsequently mechanisms. Besides, inevitable during boiling. there lack comprehensive classification criterion various types instabilities. Moreover, some most widely cited experimental studies on surveyed. It realized aspect ratio cross sectional show promising merits enhancement. Some future research suggestions made based review.