壳管式蒸发器是用来冷却盐水或其它载冷剂的制冷设备的主要形式之一,由于其传热系数高结构紧凑,可与冷却排管组成闭式循环系统,减缓设备管道的腐蚀,泵的能量消耗少等优点,在制冷装置中得到了广泛的应用。但壳管式蒸发器也有其缺点,如:运行中较难观察,当盐水浓度降低和热负荷减小时有冻结的可能,一但发生管子冻裂,修复则很困难,对设备和生产造成损失。为防止 Shell and tube evaporators are one of the main forms of refrigeration equipment used to cool brine or other refrigerants. Because of its high heat transfer coefficient and compact structure, it can form a closed circulation system with the cooling discharge pipes to slow the corrosion of equipment pipes, Pump energy consumption less advantages, in the refrigeration unit has been widely used. However, shell-and-tube evaporators also have their drawbacks, such as the harder to observe during operation, the possibility of freezing when the brine concentration is reduced and the heat load is reduced, and repairs are difficult with loss of equipment and production . To prevent