2016-03-21 14:01:14

介绍冷库除霜的四种常用的方法
Introduce the four common methods in defrosting the refrigerator
1、超声波除霜是节能明显的除霜方法，应进一步研究超声波发生器的布置规律，提高除霜彻底程度，以便工程应用。
1, ultrasonic defrost is evidently energy-saving defrosting method, should be further studied the layout of ultrasonic generator, increase the degree of defrost completely, so that the engineering application.
2、适用于小型系统的热气除霜，系统和控制方法简单，除霜速度快、均匀且安全，应进一步扩大应用范围。医药冷库
2, suitable for hot gas defrosting of small systems, systems and control method is simple, fast defrost, uniform and safe, should further expand the application range.
3、气动除霜特别适用于需要频繁除霜的制冷系统，虽然需要增加专用气源和空气处理设备，只要利用率较高经济性会很好。
3, pneumatic defrosting is particularly suited to need frequent defrosting refrigeration system, although the need to increase the special air supply and air handling equipment, as long as the higher utilization efficiency will be very good.
4、液体冷媒除霜，制冷过程和除霜过程同时进行，在除霜期间没有附加能耗，冰霜冷量用于过冷膨胀阀前的液体制冷剂，提高制冷效率使得库温能够得到基本保持，液体冷媒温度在常温范围之内，融霜期间蒸发器温升小，对蒸发器传热的恶化作用不大。缺点是系统复杂控制繁琐。

4, liquid refrigerant defrosting, refrigeration and defrosting process simultaneously, no additional energy consumption during defrosting, frost cold quantity used in supercooled liquid refrigerant before expansion valve, improve the efficiency of refrigeration makes library can get basic to keep warm, liquid refrigerant temperature in normal temperature range, evaporator temperature rise during the defrosting, the deterioration of heat transfer of evaporator. The disadvantage is the complex control system trival.

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