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Experimental Study of the Moist Air Condensation Across a Vertical Cold Wall
Author(s): 
Pages: 871-874
Year: Issue:  5
Journal: Journal of Engineering Thermophysics

Keyword:  湿空气 凝结 竖直表面 油浸;
Abstract: 实验研究了湿空气掠过普通铝箔、亲水铝箔以及浸油处理后的竖直冷表面凝结时的显热和潜热传递,结果表明:湿空气凝结速率不高时,亲水表面上的凝结液更易于铺展,质量传递性能较好,比易于成珠的普通表面传热性能好。油污的存在增加了亲水表面质量传递和热量传递的阻力,但对普通表面的影响很小;较低的凝结速率使凝结液流动复杂化,流态由重力和表面张力共同作用,因此传热和传质的类比与膜状凝结理论值相差较大;凝结液呈现不规则液滴凝结、生长以及聚合现象。
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