Considering gravity, interfacial shear stress, surface tension and interfacial thermal resistance, the analysis model for annular flow condensation heattransfer in microtube was presented.
The grooves on the heated surface lowered the flow resistance and enhanced the film heattransfer coefficient 2-3 times that of flat plates.
相同雷诺数的槽板平均表面换热系数是平板的2~3倍,同时减小了流动阻力。
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The main contents of this paper were the studying of air-water medium corrugated plate heat exchanger flow resistance characteristics according to the principle of primary surfaceheattransfer.