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.

　　換熱器，是將熱流體的部分熱量傳遞給冷流體的設備，又稱熱交換器。換熱器是化工、石油、動力、食品及其它許多工業(yè)部門的通用設備，在生產(chǎn)中占有重要地位。在化工生產(chǎn)中換熱器可作為加熱器、冷卻器、冷凝器、蒸發(fā)器和再沸器等，應用更加廣泛。換熱器種類很多，但根據(jù)冷、熱流體熱量交換的原理和方式基本上可分三大類即：間壁式、混合式和蓄熱式。在三類換熱器中，間壁式換熱器應用*多。

　　弓形折流板換熱器? 螺旋折流板換熱器

　　板翅式換熱器?板式換熱器

　　混合式換熱器（冷卻塔）

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