Heat exchanger is the equipment that transfer the heat from the heat fluid to the cold fluid. It is widely used in the chemical field, power field, food and other industrial field, so it plays an important role in the industry. In the chemical field, heat exchanger can be taken as the heater, cooler, condenser, evaporator and reboiler and so on.

　　According to the working principle, it can be divided into three types: recuperative heat exchanger, mixing heat exchanger and regenerative heat exchanger. Among these three typies heat exchangers, recuperative heat exchanger is most widely used.

　　换热器，是将热流体的部分热量传递给冷流体的设备，又称热交换器。换热器是化工、石油、动力、食品及其它许多工业部门的通用设备，在生产中占有重要地位。在化工生产中换热器可作为加热器、冷却器、冷凝器、蒸发器和再沸器等，应用更加广泛。换热器种类很多，但根据冷、热流体热量交换的原理和方式基本上可分三大类即：间壁式、混合式和蓄热式。在三类换热器中，间壁式换热器应用*多。

　　弓形折流板换热器? 螺旋折流板换热器

　　板翅式换热器?板式换热器

　　混合式换热器（冷却塔）

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