Fins are the basic components of plate-fin heat exchanger. The main type of fins are straight fin, serrated fin, perforated fin, wavy fin, louvered fin, etc.

• 翅片是板翅式热交换器的最基本元件。常用的翅片形式有：平直翅片、锯齿形翅片、多孔翅片、波纹翅片、百叶窗式翅片等。