For HCFC22, the enhancement of condensation heat transfer outside two kinds of enhanced tubes versus the plain tube is larger than that for R407C.
对于所试验的两种强化管，HCFC22的管外冷凝换热系数的强化效果比R407C更明显。
It is of considerable significance to get more insights into the mechanism of condensation heat transfer enhancement by means of surface coatings.
这对深化表面涂层强化冷凝传热的机理以及选择传热表面涂层材料具有指导意义。
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