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板式换热器结垢了有什么影响?

Author:heat exchanger    Publish time:2022-04-08 19:19:42    View:218

板式热交换器在使用过程中,由于换热器板片特殊的波纹,形状设计有大量的支撑触点,是固体杂质或纤维易集聚之处,若流体控制不达标,很容易使流体形成局部滞留而结垢。另外,介质中的钙、镁、碳酸盐遇热后分解为碳酸钙和氢氧化镁沉淀物黏结在换热器的受热面上,很容易形成坚硬的水垢。由于水垢的导热性能差,因此板式换热器结垢会导致传热设备的传热系数降低,在严重的情况下会堵塞板片通道,阻碍换热流体通过,造成热能的严重浪费,从而影响换热的效果。

预防措施: (1)板式换热器不宜用在较脏或易结垢的环境。 (2)控制换热介质的水质情况。

(3)用未软化的冷却水做介质时,操作温度应控制在50℃以下。

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