本文在常压下以水为工质,对管外及窄环隙流道池沸腾换热进行了可视化实验,结果表明:汽泡扰动并不是沸腾换热系数高的主要原因,液体过冷使核沸腾的换热能力降低,窄隙流道内的沸腾换热机理与普通的大容积沸腾没有明显区别.文中还根据观察和测量到的结果对一些换热现象重新进行了解释.
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